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1

50,000-Watt AM Stations IA | MB | MI | MN | NE | ND | ON | SD | WI | Station News | Owners | TV Captures | Links  

E-Print Network (OSTI)

2) and the concentration of 65Cu2+ estimated by the speciation model WHAM (1.0 (28)), we could]e^ equals zero and that [65 Cu2+ ] was constant (i.e., nominal [65 Cu2+ ] ) 5.2-µg L-1). That is, WHAM the speciation model WHAM (28) assuming that the lake water has a pH near 8 (30), a dissolved organic carbon

Allen, Gale

2

Category:Pierre, SD | Open Energy Information  

Open Energy Info (EERE)

Pierre, SD Pierre, SD Jump to: navigation, search Go Back to PV Economics By Location Media in category "Pierre, SD" The following 16 files are in this category, out of 16 total. SVFullServiceRestaurant Pierre SD Black Hills Power Inc.png SVFullServiceRestauran... 68 KB SVHospital Pierre SD Black Hills Power Inc.png SVHospital Pierre SD B... 67 KB SVLargeHotel Pierre SD Black Hills Power Inc.png SVLargeHotel Pierre SD... 69 KB SVLargeOffice Pierre SD Black Hills Power Inc.png SVLargeOffice Pierre S... 67 KB SVMediumOffice Pierre SD Black Hills Power Inc.png SVMediumOffice Pierre ... 71 KB SVMidriseApartment Pierre SD Black Hills Power Inc.png SVMidriseApartment Pie... 68 KB SVOutPatient Pierre SD Black Hills Power Inc.png SVOutPatient Pierre SD... 68 KB SVPrimarySchool Pierre SD Black Hills Power Inc.png

3

NE-20  

Office of Legacy Management (LM)

hi v. !&-2:. hi v. !&-2:. /qL lo 1 OCT 2 9 1984 NE-20 -. Authorization for Remedial Action of the Ashland 2 Site, Tonawanda, New York f! Joe LaGrone, Manager Oak Ridge Operations Office Based on the Aerial Radiological Survey (Attachment 1) and a "walk-on" radiologlcal survey (Attachment 2 , excerpted from the ORNL draft report "Ground-Level Investigation of Anomalous Gamma Radiation Levels in the Tonawanda, New York, Area," January 1980), the property identified as Ashland 2 is authorized for remedial action. It should be noted that the attached survey data are for designation purposes only and Bechtel National, Inc. (EM), should conduct appropriate comprehensive characterization surveys to determine the extent and magnitude of the

4

NE-23,  

Office of Legacy Management (LM)

t:"'. ? - ' t:"'. ? - ' y5 NE-23, wk$& Dr. Joseph A. Warburton Chainnan, Radiological and Toxicological Safety Board University of Nevada System DRI/ASC, P.O. Box 60220 Reno, Nevada 89506 Dear Dr. Warburton: The Department of Energy (DOE), as part of its Formerly Utilized Sites Remedial Action Program (FUSRAP), has reviewed information on the Mackay School of M ines facility at the University of Nevada, Reno, Nevada, to determine whether it contains residual radioactivity traceable to activities conducted on behalf of the Atomic Energy Commission (a predecessor to DOE). A radiological survey indicated that the radiation levels at the involved portion of the facility are at or near background levtrls. Therefore, no remedial action is required, and DGE is eliminating

5

NE-24  

Office of Legacy Management (LM)

VW- VW- 50 "id AU6 3 1983 NE-24 .' . _ : ' : R&D Decontamination Projects Under the Formerly Utilized Sites Remedial Actlon Program (FUSRAP) '_ F .- ,: 'J,.LaGrone, Manager . Oak Ridge Operations Office As a result of the House-Senate Conference Report and the Energy and Water Appropriations Act for FY 1984, and based on the data in the attached reports indicating radioactive contamination in excess of acceptable guidelines, the sites listed in the attachment and their respective vicinity properties (contaminated with radioactive materials from these sites) are being designated as decontamination research and development projects under the FUSRAP. Each site and the associated vicinity properties should be treated as a separate project. The objective of each project is to decontaminate the vicinity properties

6

Event:SD-Learning | Open Energy Information  

Open Energy Info (EERE)

The courses aim at providing participants with practical knowledge and hands-on training from experts around the world. Event Details Name SD-Learning Date 20120613...

7

Microsoft Word - SD452.3 FINAL  

National Nuclear Security Administration (NNSA)

NA SD M 452.3-1 NA SD M 452.3-1 Approved: 12-10-09 DEFENSE PROGRAMS BUSINESS REQUIREMENTS AND PROCESSES MANUAL NATIONAL NUCLEAR SECURITY ADMINISTRATION Office of Defense Programs AVAILABLE ONLINE AT: INITIATED BY: http://www.nnsa.energy.gov Office of Defense Programs NA SD M 452.3-1 Page 12-10-09 1 DEFENSE PROGRAMS BUSINESS REQUIREMENTS AND PROCESSES MANUAL 1. PURPOSE. This Department of Energy (DOE), National Nuclear Security Administration (NNSA) Business Requirements and Process Manual supplements DOE O 452.3 "Management of the Department of Energy Nuclear Weapons Complex." This supplemental directive establishes the Requirements Modernization and Integration (RMI) Explorer as the electronic Defense Programs manual that implements DOE O

8

NE Blog Archive  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

ne/blog-archive 1000 Independence Ave. SWWashington DC ne/blog-archive 1000 Independence Ave. SWWashington DC 20585202-586-5000 en Generation IV International Forum Updates Technology Roadmap and Builds Future Collaboration http://energy.gov/ne/articles/generation-iv-international-forum-updates-technology-roadmap-and-builds-future ne/articles/generation-iv-international-forum-updates-technology-roadmap-and-builds-future" class="title-link">Generation IV International Forum Updates Technology Roadmap and Builds Future Collaboration

9

Vanishing N=20 Shell Gap: Study of Excited States in {sup 27,28}Ne  

Science Conference Proceedings (OSTI)

This Letter reports on the {sup 1}H({sup 28}Ne,{sup 28}Ne) and {sup 1}H({sup 28}Ne,{sup 27}Ne) reactions studied at intermediate energy using a liquid hydrogen target. From the cross section populating the first 2{sup +} excited state of {sup 28}Ne, and using the previously determined B(E2) value, the neutron quadrupole transition matrix element has been calculated to be M{sub n}=13.8{+-}3.7 fm{sup 2}. In the neutron knockout reaction, two low-lying excited states were populated in {sup 27}Ne. Only one of them can be interpreted by the sd shell model while the additional state may intrude from the fp shell. These experimental observations are consistent with the presence of fp shell configurations at low excitation energy in {sup 27,28}Ne nuclei caused by a vanishing N=20 shell gap at Z=10.

Dombradi, Zs.; Fueloep, Zs. [Institute of Nuclear Research of the Hungarian Academy of Sciences, P.O. Box 51, Debrecen, H-4001 (Hungary); Elekes, Z. [Institute of Nuclear Research of the Hungarian Academy of Sciences, P.O. Box 51, Debrecen, H-4001 (Hungary); Institute of Physical and Chemical Research, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan); Saito, A.; Baba, H.; Demichi, K.; Gomi, T.; Hasegawa, H.; Kanno, S.; Kawai, S.; Kurita, K.; Matsuyama, Y.; Sakai, H.K.; Takeshita, E.; Togano, Y.; Yamada, K. [Rikkyo University, 3 Nishi-Ikebukuro, Toshima, Tokyo 171 (Japan); Aoi, N.; Ishihara, M.; Kishida, T.; Kubo, T. [Institute of Physical and Chemical Research, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan)] (and others)

2006-05-12T23:59:59.000Z

10

MiniBooNE  

SciTech Connect

To begin, we examine the relationship between MiniBooNE and the neutrino beam geometry at Fermilab. In Figure 1, a schematic representation is shown of the plan view of the location of MiniBooNE relative to SciBooNE and the NuMI target, where it can be seen that SciBooNE and MiniBooNE share the same beamline and neutrino flux, and therefore share some of the same systematic effects -- A combined analysis between the two experimental groups could yield a superior result compared to segregated individual analysis. MiniBooNE makes an angle of 6.3 degrees with the NuMI beamline, an off-axis measurement if you will, that provides a relatively high yield of electron neutrinos from kaon decay. Furthermore, the proton beam incident on the MiniBooNE target possesses a 53 MHz structure that will be important in timing studies related to the low energy excess. Let's review of the results of the MiniBooNE: As is well known, MiniBooNE, a test of the LSND effect [1], adds experimental inspiration to the possible existence of new phenomena; although two neutrino-family oscillations were shown to be an unlikely candidate to explain the LSND effect, a low energy excess of 3.0 sigma in the neutrino sector at energies between 200 to 475 MeV [2] - an effect that appears to have no counterpart in the antineutrino sector [3], combined with the 3.8 sigma LSND result - at roughly 50 MeV - strains phenomenology for insight. Miniboones continues to run and collect antineutrino data; will combine disappearance analysis with SciBooNE; take data from the NuMI target, an unusual source with a potentially new look at the low energy anomaly; and use beam timing techniques to further constrain phenomenological models. In this paper we will review current topics related to MiniBooNE and other associated experiments and phenomenology.

Stefanski, Ray; /Fermilab

2009-10-01T23:59:59.000Z

11

DYNAMICAL PROPERTIES OF s-d INTERACTION  

SciTech Connect

The dynamical propertics of two spin systems composed of conduction electron spins and localized d-spins interacting by exchange are investigated in connection with the electron-spin resonance of d-spins with the free electron g- value. It seems that some basic considerations are necessary for the problem along the line of the widely accepted idea thai the s-d interaction itself does not lead to any relaxation time and shift. The usual adiahatic approximation is applied to this idea. A modified damping equation of the Bloch type as well as Bloch's relaxation theory arc also useful, but these are not enough for a complete solution of the problem. A certain controversy involved in recent experimental and theoretical work at Berkeley concerning the electron spin resonance in Cu-Mu dilute alloy is pointed out and examined. It appears that the possibility could not be eliminated that the spin-lattice relaxation time of conduction electrons in the alloy due to mechanisms other than the s-d interaction is longer than previous authors have assumed. (auth)

Hasegawa, H.

1959-04-01T23:59:59.000Z

12

Experimental study of upper sd shell nuclei and evolution of sd-fp shell gap  

Science Conference Proceedings (OSTI)

The intruder orbitals from the fp shell play important role in the structure of nuclei around the line of stability in the upper sd shell. Experimentally we have studied {sup 35}Cl, {sup 30}P, {sup 36}Cl, {sup 37}Ar and {sup 34}Cl in this mass region using the INGA setup. Large basis cross-shell shell model calculations have indicated the need for change of the sd-fp energy gap for reliable reproduction of negative parity and high spin positive parity states. Indication of population of states of large deformation has been found in our data. Theoretical interpretation of these states has been discussed.

Sarkar, M. Saha [Saha Institute of Nuclear Physics, Kolkata - 700064 (India)

2012-06-27T23:59:59.000Z

13

OPTIONAL I-""... ..o SD  

Office of Legacy Management (LM)

OPTIONAL I-""... ..o SD , * ' y)IP-lW ' a * UNITED S T A T E S COVEKNMENT TO : Files DATE: September 25, 1962 M o m 4' Materials Branch; Division of Licensing & Regulation SUBJECT: PRE-LICENSING VISIT TO THE CONTEMPORARY METALS CORPORATION PROPOSED FACILITY AT HAZELWOOD, M ISSOURI, AND RESIDUE STOCKPILES AT ROBERTSON, M ISSOURI, DOCKET NO, 40-6811 The Contemporary Metals Corporation was awarded a contract by the AEC for the removal of uranium -bearing residues from stock- pile areas at Robertson, M issouri. These residues were generated by the Commission at its Destrehan Street Plant, St; Louis, M issouri. The applicant intends to process these residues at its Hazelwocd facility which is about three (3) m iles from the stock- pile site, Attempts will be made to extract the associated

14

Understanding Nuclei in the upper sd - shell  

E-Print Network (OSTI)

Nuclei in the upper-$sd$ shell usually exhibit characteristics of spherical single particle excitations. In the recent years, employment of sophisticated techniques of gamma spectroscopy has led to observation of high spin states of several nuclei near A$\\simeq$ 40. In a few of them multiparticle, multihole rotational states coexist with states of single particle nature. We have studied a few nuclei in this mass region experimentally, using various campaigns of the Indian National Gamma Array setup. We have compared and combined our empirical observations with the large-scale shell model results to interpret the structure of these nuclei. Indication of population of states of large deformation has been found in our data. This gives us an opportunity to investigate the interplay of single particle and collective degrees of freedom in this mass region.

M. Saha Sarkar; Abhijit Bisoi; Sudatta Ray; Ritesh Kshetri; S. Sarkar

2013-08-01T23:59:59.000Z

15

Eliyahu Ne'eman  

NLE Websites -- All DOE Office Websites (Extended Search)

Eliyahu Ne'eman Eliyahu Ne'eman Consulting Engineer on Lighting and Daylighting Lawrence Berkeley National Laboratory This speaker was a visiting speaker who delivered a talk or talks on the date(s) shown at the links below. This speaker is not otherwise associated with Lawrence Berkeley National Laboratory, unless specifically identified as a Berkeley Lab staff member. Eliyahu Ne'eman is a leading international expert on lighting and daylighting. He has been involved in education, research and practice for over 40 years while working in Israel, UK, Germany and the US(LBNL). He has worked extensively in the area of occupant response in luminous spaces and he has been leading the CIE Task Group that has revised the CIE Museum Lighting Guide. This Speaker's Seminars Control of Damage to Museum Objects by Optical Radiation

16

Category:Omaha, NE | Open Energy Information  

Open Energy Info (EERE)

Omaha, NE Omaha, NE Jump to: navigation, search Go Back to PV Economics By Location Media in category "Omaha, NE" The following 16 files are in this category, out of 16 total. SVFullServiceRestaurant Omaha NE Omaha Public Power District.png SVFullServiceRestauran... 63 KB SVHospital Omaha NE Omaha Public Power District.png SVHospital Omaha NE Om... 61 KB SVLargeHotel Omaha NE Omaha Public Power District.png SVLargeHotel Omaha NE ... 61 KB SVLargeOffice Omaha NE Omaha Public Power District.png SVLargeOffice Omaha NE... 63 KB SVMediumOffice Omaha NE Omaha Public Power District.png SVMediumOffice Omaha N... 65 KB SVMidriseApartment Omaha NE Omaha Public Power District.png SVMidriseApartment Oma... 62 KB SVOutPatient Omaha NE Omaha Public Power District.png SVOutPatient Omaha NE ...

17

NE-23 W  

Office of Legacy Management (LM)

>:-1. ,- '"CC3 >:-1. ,- '"CC3 . ' NE-23 .+ W h itm~ l-l& Mr. Victor 3. Canilov, Director Museum of Science and Industry East 57th Street and Lake Shore Drive Chicago, Illinois 60037 Dear kr. Danilov: The Department of Energy (DOE), as part of its Formerly Utilized Sites Remedial Action Program (FUSPSIP), has reviewed information on the Museum cf Science and Industry, Chicago, Illinois, to determine whether it contains residual radioactivity traceable to activities conducted on behalf of the Manhattan Engineer District or the Atomic Energy C o m m ission (predecessors to DOE). A radiological survey indicated that the radiation levels are equal to natural background. Therefore, no remedial action is required, ant DOE is eliminating the Museum of Science and Industry from further

18

DOE - Office of Legacy Management -- Edgemont Mill Site - SD 01  

Office of Legacy Management (LM)

Edgemont Mill Site - SD 01 Edgemont Mill Site - SD 01 FUSRAP Considered Sites Site: Edgemont Mill Site (SD.01) Designated Name: Alternate Name: Location: Evaluation Year: Site Operations: Site Disposition: Radioactive Materials Handled: Primary Radioactive Materials Handled: Radiological Survey(s): Site Status: Also see Edgemont, South Dakota, Disposal Site Documents Related to Edgemont Mill Site 2012 Annual Site Inspection and Monitoring Report for Uranium Mill Tailings Radiation Control Act Title II Disposal Sites-Edgemont, South Dakota, Disposal Site. LMS/S09415. November 2012 U.S. Department of Energy 2008 UMTRCA Title II Sites Annual Report November 2008 Edgemont, South Dakota FACT SHEET Office of Legacy Management Edgemont, South Dakota, Disposal Site This fact sheet provides information about the Uranium Mill

19

US NE MA Site Consumption  

Gasoline and Diesel Fuel Update (EIA)

NE MA NE MA Site Consumption million Btu $0 $500 $1,000 $1,500 $2,000 $2,500 $3,000 US NE MA Expenditures dollars ALL ENERGY average per household (excl. transportation) 0 2,000 4,000 6,000 8,000 10,000 12,000 US NE MA Site Consumption kilowatthours $0 $250 $500 $750 $1,000 $1,250 $1,500 US NE MA Expenditures dollars ELECTRICITY ONLY average per household * Massachusetts households use 109 million Btu of energy per home, 22% more than the U.S. average. * The higher than average site consumption results in households spending 22% more for energy than the U.S. average. * Less reliance on electricity for heating, as well as cool summers, keeps average site electricity consumption in the state low relative to other parts of the U.S. However, spending on electricity is closer to the national average due to higher

20

US NE MA Site Consumption  

U.S. Energy Information Administration (EIA) Indexed Site

NE MA NE MA Site Consumption million Btu $0 $500 $1,000 $1,500 $2,000 $2,500 $3,000 US NE MA Expenditures dollars ALL ENERGY average per household (excl. transportation) 0 2,000 4,000 6,000 8,000 10,000 12,000 US NE MA Site Consumption kilowatthours $0 $250 $500 $750 $1,000 $1,250 $1,500 US NE MA Expenditures dollars ELECTRICITY ONLY average per household * Massachusetts households use 109 million Btu of energy per home, 22% more than the U.S. average. * The higher than average site consumption results in households spending 22% more for energy than the U.S. average. * Less reliance on electricity for heating, as well as cool summers, keeps average site electricity consumption in the state low relative to other parts of the U.S. However, spending on electricity is closer to the national average due to higher

Note: This page contains sample records for the topic "ne sd mn" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Horizontal Branch evolution, metallicity and sdB stars  

E-Print Network (OSTI)

Context. Abundance anomalies have been observed in field sdB stars and in nearly all Horizontal Branch (HB) stars of globular clusters with Teff > 11 000K whatever be the cluster metallicity. Aims. The aim is to determine the abundance variations to be expected in sdB stars and in HB stars of metallicities Z \\geq 0.0001 and what observed abundances teach us about hydrodynamical processes competing with atomic diffusion. Methods. Complete stellar evolution models, including the effects of atomic diffusion and radiative acceleration, have been computed from the zero age main-sequence for metallicities of Z0 = 0.0001, 0.001, 0.004 and 0.02. On the HB the masses were selected to cover the Teff interval from 7000 to 37000K. Some 60 evolutionary HB models were calculated. The calculations of surface abundance anomalies during the horizontal branch depend on one parameter, the surface mixed mass. Results. For sdB stars with Teff 11 000K in all observed clusters, independent of metallicity, it was found that most ob...

Michaud, G; Richard, O

2011-01-01T23:59:59.000Z

22

Overview of NE Research Programs  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

NE Research Programs NE Research Programs Sue Lesica Office of Nuclear Energy U.S. Department of Energy July 31, 2013 2 R&D Budgets FY 2013 FY 2014 Congressional Request House Mark Senate Mark SMR Licensing Technical Support 62,999 70,000 110,000 70,000 Small Modular Reactor R&D 23,958 20,000 20,000 20,000 Next Generation Nuclear Plant 38,720 0 0 0 LWR Sustainability 24,218 21,500 21,500 21,500 Advanced Reactor Concepts 21,178 31,000 45,000 21,000 Reactor Concepts RD&D 108,075 72,500 86,500 62,500 Modeling and Simulation Hub 24,588 24,300 24,300 24,300 Crosscutting Technology Development 17,242 13,901 27,885 25,437 NEAMS 13,646 9,536 National Scientific Users Facility 14,563 14,563 14,563 14,563 Nuclear Energy Enabling Technologies 70,040 62,300 66,748 62,300

23

SD-GIS-based temporal-spatial simulation of water quality in sudden water pollution accidents  

Science Conference Proceedings (OSTI)

System dynamics (SD) is well suited for studying dynamic nonlinear complex systems. In this paper, SD is applied to a rapid-onset water pollution accident using a 1-D water quality model and a conceptual GIS-SD framework is constructed to simulate the ... Keywords: System dynamics, Temporal-spatial simulation, Water pollution accidents

Bo Zhang; Yu Qin; Mingxiang Huang; Qiang Sun; Shun Li; Liqiang Wang; Chaohui Yu

2011-07-01T23:59:59.000Z

24

NE - Nuclear Energy - Energy Conservation Plan  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

NUCLEAR ENERGY (NE) NUCLEAR ENERGY (NE) ENERGY CONSERVATION PLAN NE has heavily emphasized the use of flexiplace, both regular and situational. Since approximately 56 percent of NE staff use flexiplace, our plan is based on the Forrestal/Germantown (FORS/GTN) office spaces, and flexiplace office space. There are other common sense actions and policies that will be used to improve energy efficiency in the offices at both FORS and GTN. In the FORS/GTN office space: 1. Use flexiplace to the maximum extent possible. Saving an average of 1.5 gallons of gasoline per day per person (e.g., 13 miles per work x 2 = 26 miles, an average of 17 mpg), on a normal workday, NE employees save (56 percent of 145 = 71 times 1.2 days per pay period = 85.2 workdays x 1.5 gals = 127.8 gallons/pay

25

Spectral analysis of multi mode pulsating sdB stars II. Feige 48, KPD 2109+4401 and PG 1219+534  

E-Print Network (OSTI)

Three members of the new class of pulsating sdB stars (sdBV or EC 14026 stars) are analysed from Keck HIRES spectra using line blanketed NLTE and LTE model atmospheres. Atmospheric parameters (Teff, log g, He/H), metal abundances and rotational velocities are determined. As is typical for sdB stars, all programme stars are found to be helium deficient, with a He abundance ranging from 1/80 solar for Feige 48 to 1/3 solar for PG 1219+534, probably due to diffusion. Most metals are also depleted. The abundances of C, O, Ne, Mg, Al and Si in the high gravity programme stars KPD 2109+4401 and PG 1219+534 are considerably lower than in the lower gravity stars Feige 48 and PG 1605+072 which could be explained by an equilibrium between gravitational settling and radiative levitation. Surprisingly iron is solar to within error limits in all programme stars irrespective of their gravity, confirming predictions from diffusion calculations. The metal lines are very sharp and allow the microturbulent velocity to be constrained to be lower than 5km/s (KPD2109+4401, PG 1219+534). Also the projected rotational velocities have to be very low (vrot sini<10km/s). For Feige 48 the limits are even tighter (vmicro<=3km/s, vrot sini<=5km/s).

U. Heber; I. N. Reid; K. Werner

2000-09-11T23:59:59.000Z

26

Time resolved magneto-optical studies of ferromagnetic InMnSb films  

SciTech Connect

We report time resolved magneto-optical measurements in InMnSb ferromagnetic films with 2% and 2.8% Mn contents grown by low temperature molecular beam epitaxy. In order to probe a possible interaction between the spins of photoexcited carriers and the Mn ions, we measured spin dynamics before and after aligning the Mn ions by applying an external magnetic field at temperatures above and below the samples' Curie temperatures. We observed no significant temperature or magnetic field dependence in the relaxation times and attribute the observed dynamics entirely to the relaxation of photoexcited electrons in the conduction band where the s-d coupling with the localized Mn ions is significantly weaker compared to the p-d exchange coupling. We observed several differences in the optical response of our InMnSb samples which could have been influenced mainly by the samples' growth conditions.

Frazier, M.; Kini, R. N.; Nontapot, K.; Khodaparast, G. A. [Department of Physics, Virginia Tech, Blacksburg, Virginia 24061 (United States); Wojtowicz, T. [Institute of Physics, Polish Academy of Sciences 02-668 Warsaw (Poland); Liu, X.; Furdyna, J. K. [Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556 (United States)

2008-02-11T23:59:59.000Z

27

HOW TO MAKE A SINGLETON sdB STAR VIA ACCELERATED STELLAR EVOLUTION  

Science Conference Proceedings (OSTI)

Many hot subdwarf B stars (sdBs) are in close binaries, and the favored formation channels for subdwarfs rely on mass transfer in a binary system to strip a core He-burning star of its envelope. However, these channels cannot account for sdBs that have been observed in long-period binaries nor the narrow mass distribution of isolated (or 'singleton') sdBs. We propose a new formation channel involving the merger of a helium white dwarf and a low-mass, hydrogen-burning star, which addresses these issues. Hierarchical triples whose inner binaries merge and form sdBs by this process could explain the observed long-period subdwarf+main-sequence binaries. This process would also naturally explain the observed slow rotational speeds of singleton sdBs. We also briefly discuss the implications of this formation channel for extreme horizontal branch morphology in globular clusters and the UV upturn in elliptical galaxies.

Clausen, Drew; Wade, Richard A., E-mail: dclausen@astro.psu.edu, E-mail: wade@astro.psu.edu [Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Lab, University Park, PA 16802 (United States)

2011-06-01T23:59:59.000Z

28

Interatomic Coulombic decay following Ne 1s Auger decay in NeAr  

SciTech Connect

Using momentum-resolved electron-ion multicoincidence spectroscopy, we have investigated interatomic Coulombic decay (ICD) in the heteronuclear NeAr dimer following Ne 1s Auger decay. The measured intensity ratio for the three ICD transitions Ne{sup 2+}(2s{sup -1}2p{sup -1} {sup 1}P)Ar to Ne{sup 2+}(2p{sup -2} {sup 1}S)-Ar{sup +}(3p{sup -1}), Ne{sup 2+}(2s{sup -1}2p{sup -1} {sup 1}P)Ar to Ne{sup 2+}(2p{sup -2} {sup 1}D)-Ar{sup +}(3p{sup -1}), and Ne{sup 2+}(2s{sup -1}2p{sup -1} {sup 3}P)Ar to Ne{sup 2+}(2p{sup -2} {sup 3}P)-Ar{sup +}(3p{sup -1}) reasonably agree with predictions. The kinetic energy release distribution for the fragmentation to Ne{sup 2+}(2p{sup -2} {sup 1}D)-Ar{sup +}(3p{sup -1}) after the ICD transition from singlet Ne{sup 2+}(2s{sup -1}2p{sup -1} {sup 1}P)Ar state, which is a mirror image of the kinetic energy distribution of the emitted ICD electrons, suggests that the corresponding ICD rate is roughly two times lower than predicted by ab initio calculations.

Ouchi, T.; Sakai, K.; Fukuzawa, H.; Ueda, K. [Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577 (Japan); Higuchi, I.; Tamenori, Y. [Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198 (Japan); Demekhin, Ph. V.; Chiang, Y.-C.; Stoychev, S. D.; Kuleff, A. I. [Theoretische Chemie, Universitaet Heidelberg, D-69120 Heidelberg (Germany); Mazza, T. [Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577 (Japan); Cimaina and Dipartimento di Fisica, Universita degli Studi di Milano, via Celoria 16, I-20133 Milano (Italy); Schoeffler, M. [Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States); Nagaya, K.; Yao, M. [Department of Physics, Kyoto University, Kyoto 606-8502 (Japan); Saito, N. [National Institute of Advanced Industrial Science and Technology, National Meteorology Institute of Japan, Tsukuba 305-8568 (Japan)

2011-05-15T23:59:59.000Z

29

NE SARE Arbuscular Mycorrhiza Research following canola  

E-Print Network (OSTI)

NE SARE Arbuscular Mycorrhiza Research Corn grown following canola Corn grown following soybeans The planting of canola, a non-mycorrhizal crop, has been shown to reduce arbuscular mycorrhizal fungi following canola. To address this problem, we intercropped canola with oats, a mycorrhizal crop

Kaye, Jason P.

30

Geology of the USW SD-7 Drill Hole, Yucca Mountain, Nevada  

E-Print Network (OSTI)

i SAND96-1474 Distribution Unlimited Release Category UC-814 Printed September 1996 Geology of the USW SD-7 Drill Hole Yucca Mountain, Nevada Christopher A. Rautman Geohydrology Department Sandia National Laboratories Albuquerque, New Mexico 87185 Dale A. Engstrom Spectra Research Institute Albuquerque, New Mexico 87106 Abstract The USW SD-7 drill hole is one of several holes drilled under Site Characterization Plan Study 8.3.1.4.3.1, also known as the Systematic Drilling Program, as part of the U.S. Department of Energy characterization program at Yucca Mountain, Nevada. The Yucca Mountain site has been proposed as the potential location of a repository for high-level nuclear waste. The SD-7 drill hole is located near the southern end of the potential repository area and immediately to the west of the Main Test Level drift of the Exploratory Studies Facility. The hole is not far from the junction of the Main Test Level drift and the proposed South Ramp decline. Drill hole USW SD-7...

Rautman And Engstrom; C. A. Rautman; D. A. Engstrom; Christopher A. Rautman; Dale A. Engstrom

1996-01-01T23:59:59.000Z

31

Geology of the USW SD-12 Drill Hole, Yucca Mountain, Nevada  

E-Print Network (OSTI)

i SAND96-1368 Distribution Unlimited Release Category UC-814 Printed November 1996 Geology of the USW SD-12 Drill Hole Yucca Mountain, Nevada Christopher A. Rautman Geohydrology Department Sandia National Laboratories Albuquerque, New Mexico 87185-1324 Dale A. Engstrom Spectra Research Institute Albuquerque, New Mexico 87106 Abstract Drill hole USW SD-12 is one of several holes drilled under Site Characterization Plan Study 8.3.1.4.3.1, also known as the "Systematic Drilling Program," as part of the U.S. Department of Energy characterization program at Yucca Mountain, Nevada, which has been proposed as the potential location of a repository for high-level nuclear waste. The SD-12 drill hole is located in the central part of the potential repository area, immediately to the west of the Main Test Level drift of the Exploratory Studies Facility and slightly south of midway between the North Ramp and planned South Ramp declines. Drill hole USW SD-12 is 2166.3 ft (660.26 m) deep, and th...

Christopher Rautman Dale; Christopher A. Rautman; Dale A. Engstrom; Dale A. Engstrom

1996-01-01T23:59:59.000Z

32

Geology of the USW SD-9 Drill Hole, Yucca Mountain, Nevada  

E-Print Network (OSTI)

i SAND96-2030 Distribution Unlimited Release Category UC-814 Printed October 1996 Geology of the USW SD-9 Drill Hole, Yucca Mountain, Nevada Dale A. Engstrom Spectra Research Institute Albuquerque, New Mexico 87106 Christopher A. Rautman Geohydrology Department Sandia National Laboratories Albuquerque, New Mexico 87185 Abstract Drill hole USW SD-9 is one of several holes drilled under Site Characterization Plan Study 8.3.1.4.3.1, also known as the "Systematic Drilling Program," as part of the U.S. Department of Energy characterization program at Yucca Mountain, Nevada, which has been proposed as the potential location of a repository for high-level nuclear waste. The SD-9 drill hole is located in the northern part of the potential repository area, immediately to the west of the Main Test Level drift of Exploratory Studies Facility and south of the North Ramp decline. Drill hole USW SD-9 is 2223.1 ft (677.57 m) deep, and the core recovered essentially complete sections of ash-flow t...

Dale Engstrom And; Dale A. Engstrom; Dale A. Engstrom; Christopher A. Rautman; Christopher A. Rautman

1996-01-01T23:59:59.000Z

33

Cluster aspects of p-shell and sd-shell nuclei  

SciTech Connect

We report some topics on cluster structures studied by using a theoretical method of antisymmetrized molecular dynamics(AMD). Cluster features of p-shell and sd-shell nuclei are discussed. In particular, three alpha cluster structures in the excited states of {sup 12}C and {sup 14}C are focused. Dineutron correlations in neutron-rich nuclei are also discussed.

Kanada-En'yo, Y.; Kobayashi, F.; Suhara, T. [Department of Physics, Kyoto University, Kyoto 606-8502 (Japan); Kimura, M. [Creative Research Initiative ''Sousei'', Hokkaido University, Sapporo, Hokkaido 001-0021 (Japan); Taniguchi, Y. [RIKEN Nishina Center for Accelerator-Based Science, RIKEN, Wako, Saitama 351-0198 (Japan)

2011-05-06T23:59:59.000Z

34

Making CN2-SD subgroup discovery algorithm scalable to large size data sets using instance selection  

Science Conference Proceedings (OSTI)

The subgroup discovery, domain of application of CN2-SD, is defined as: ''given a population of individuals and a property of those individuals, we are interested in finding a population of subgroups as large as possible and have the most unusual statistical ... Keywords: Instance selection, Scaling down, Subgroup discovery

Jos-Ramn Cano; Francisco Herrera; Manuel Lozano; Salvador Garca

2008-11-01T23:59:59.000Z

35

NE Blog Archive | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Blog Archive Blog Archive NE Blog Archive RSS December 31, 2013 GIF Policy Group Meeting in Brussels, Belgium, November 2013 Generation IV International Forum Updates Technology Roadmap and Builds Future Collaboration The Generation IV International Forum (GIF) held its 36th Policy Group (PG) meeting on November 21-22 in Brussels, Belgium. The PG reviewed progress on a number of on-going actions and received progress reports from the GIF Experts Group (EG) and the GIF Senior Industry Advisory Panel (SIAP). December 12, 2013 The basics of small modular reactor technology explained. | Infographic by Sarah Gerrity, Energy Department. Advancing Small Modular Reactors: How We're Supporting Next-Gen Nuclear

36

Microsoft PowerPoint - NE- Milton  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

University University Program (NEUP) Presentation to Vice Presidents of Research and Development of Historically Black Colleges and Universities Ingrid M. Milton Department of Energy Office of Nuclear Energy July 9, 2009 195725 (2) Overview The Office of Nuclear Energy (NE) is committed to strengthening the Nation's educational programs in nuclear science and engineering. * Established the Nuclear Energy University Program (NEUP). * Award grants and contracts through competitive selection process. NEUP enables universities to maintain and expand their nuclear science curriculum and programs to ensure future availability of technical experts for U.S. nuclear programs. * NEUP is managed by the Center for Advanced Energy Studies (CAES). 2 195725 (3) Nuclear Energy University Program -

37

File:USDA-CE-Production-GIFmaps-SD.pdf | Open Energy Information  

Open Energy Info (EERE)

SD.pdf SD.pdf Jump to: navigation, search File File history File usage South Dakota Ethanol Plant Locations Size of this preview: 776 × 600 pixels. Full resolution ‎(1,650 × 1,275 pixels, file size: 295 KB, MIME type: application/pdf) Description South Dakota Ethanol Plant Locations Sources United States Department of Agriculture Related Technologies Biomass, Biofuels, Ethanol Creation Date 2010-01-19 Extent State Countries United States UN Region Northern America States South Dakota External links http://www.nass.usda.gov/Charts_and_Maps/Ethanol_Plants/ File history Click on a date/time to view the file as it appeared at that time. Date/Time Thumbnail Dimensions User Comment current 16:20, 27 December 2010 Thumbnail for version as of 16:20, 27 December 2010 1,650 × 1,275 (295 KB) MapBot (Talk | contribs) Automated bot upload

38

Mr. Andrew Wallo, III, NE-23  

Office of Legacy Management (LM)

9% L'Enfam Plaza, S, W.. Warhin@on, D.C. 2002ijl74j Tekphow (202) 488ddO 9% L'Enfam Plaza, S, W.. Warhin@on, D.C. 2002ijl74j Tekphow (202) 488ddO 7117-03.87.cdy.'i3 23 September 1967 ~ s ~ Mr. Andrew Wallo, III, NE-23 Oivision of Facility & Site Decommissioning Projects U.S. Department of Energy Germantown, Maryland 20545 Dear Mr. Wallo: ELIMINATION RECOMMENDATION -- COLLEGES AND IJNIVFRSITIES , The attached elimination reconnnendation was prepar!ad in accordance with your suggestion during our meeting on 22 September! The recommendation includes 26 colleges and universities identified,in Enclosure 4 to Aerospace letter subject: Status of Actions - FUSRAP Site List, dated 27 May 1987; three institutions (Tufts College, University of Virginia, and the University of Washington) currently identified!on ithe FUSRAP list of sites under consideration; and six institutions recently iden-

39

REPLY TO ATTN OF NE-301  

Office of Legacy Management (LM)

N\I&?' d,' g N\I&?' d,' g 4 DATE. fdov 2 5 1980 REPLY TO ATTN OF NE-301 .* - memoraadu SUBJECT Remedial Action for Linde Air Products Plant, Tonawanda, New York TO W. E. Mott, EV In view of the General Counsel's reconsideration of the authority to proceed with remedial action on this site and your determination that remedial action is needed to protect the public health and safety, we will include this site in our program for remedial action. of this memorandum. Oak Ridge is requested to do so by copy I am somewhat surprised at the urgency of remedial action which you implied in your memorandum since your previous memorandum designating this site stated that it has a low priority. The site radiological survey report DOE/EV-005/5 concludes that air and water contamination were below the non-occupational

40

NE Press Releases | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Press Releases Press Releases NE Press Releases RSS December 12, 2013 Energy Department Announces New Investment in Innovative Small Modular Reactor The Energy Department tannounced an award to NuScale Power LLC to support a new project to design, certify and help commercialize innovative small modular reactors in the United States. November 12, 2013 Public Invited to Comment on Draft Environmental Assessment for the Resumption of Transient Testing of Nuclear Fuels and Materials The U.S. Department of Energy invites the public to read and comment on a draft environmental assessment it has prepared for a proposal to resume transient testing of nuclear fuels and materials at either Idaho National Laboratory (INL) or Sandia National Laboratories (SNL). November 4, 2013 Factsheet: Second Meeting of the United States-Japan Bilateral Commission

Note: This page contains sample records for the topic "ne sd mn" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Notices 888 First Street, NE., Washington, DC  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

11 Federal Register 11 Federal Register / Vol. 76, No. 122 / Friday, June 24, 2011 / Notices 888 First Street, NE., Washington, DC 20426. The filings in the above-referenced proceeding are accessible in the Commission's eLibrary system by clicking on the appropriate link in the above list. They are also available for review in the Commission's Public Reference Room in Washington, DC. There is an eSubscription link on the Web site that enables subscribers to receive e-mail notification when a document is added to a subscribed docket(s). For assistance with any FERC Online service, please e-mail FERCOnlineSupport@ferc.gov or call (866) 208-3676 (toll free). For TTY, call (202) 502-8659. Dated: June 20, 2011. Kimberly D. Bose, Secretary. [FR Doc. 2011-15859 Filed 6-23-11; 8:45 am]

42

Notices 888 First Street NE., Washington, DC  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

53 Federal Register 53 Federal Register / Vol. 78, No. 56 / Friday, March 22, 2013 / Notices 888 First Street NE., Washington, DC 20426. This filing is accessible on-line at http://www.ferc.gov, using the ''eLibrary'' link and is available for review in the Commission's Public Reference Room in Washington, DC. There is an ''eSubscription'' link on the Web site that enables subscribers to receive email notification when a document is added to a subscribed docket(s). For assistance with any FERC Online service, please email FERCOnlineSupport@ferc.gov, or call (866) 208-3676 (toll free). For TTY, call (202) 502-8659. Comment Date: 5:00 p.m. Eastern Time on April 2, 2013. Dated: March 15, 2013. Kimberly D. Bose, Secretary. [FR Doc. 2013-06602 Filed 3-21-13; 8:45 am] BILLING CODE 6717-01-P

43

Mr. Andrew Wallo, III, NE-23  

Office of Legacy Management (LM)

suite 7900,955 L%l/onr Plaza, S. W., Washingion, D.C. 20024.?174,, Telephone: (202) 488.~ suite 7900,955 L%l/onr Plaza, S. W., Washingion, D.C. 20024.?174,, Telephone: (202) 488.~ Mr. Andrew Wallo, III, NE-23 Division of Facility & Site Decommissioning Projects U.S. Department of Energy Germantown, Maryland 20545 7117~03.87.dy.43 23 September 1987 I j / Dear Mr. Wallo: I ELIMINATION RECOMMENDATION -- COLLEGES AND UN&ITIES I . The attached elimination recommendation was prepared in accordance with your suggestion during our meeting on 22 September!. The recommend includes 26 colleges and universities identified,in Enclosure 4 to Aerospace letter subject: Status of Actions 27 May 1987; three institutions (Tufts and the University of Washington) currently list of sites under consideration; and six institutions tified during a search of Hanford records.

44

M r. Andrew Wallo, III, NE-23  

Office of Legacy Management (LM)

300.955 L*Enfom Plaza, S. Iv.. Washrhington. D.C. 200242174, Tekphonc (202) 300.955 L*Enfom Plaza, S. Iv.. Washrhington. D.C. 200242174, Tekphonc (202) 7117-03.87.cdy.43 23 September 1987 M r. Andrew Wallo, III, NE-23 Division of Facility & Site Deconnnissioning Projects U.S. Department of Energy Germantown, Maryland 20545 Dear M r. Wallo: ELIMINATION RECOMMENDATION -- COLLEGES AND UNIVERSITIES The attached elimination recommendation was prepared in accordi with your suggestion during our meeting on 22 September. The reconu includes 26 colleges and universities identified.in Enclosure 4 to Aerospace letter subject: Status of Actions - FUSRAP Sites List, da: 27 May 1987; three institutions.(Tufts College, University of Virgil and the University of Washington) currently identified'on the FUSFN list of sites under consideration; and six.institutions recently idI

45

MiniBooNE Oscillation Results 2011  

SciTech Connect

The MiniBooNE neutrino oscillation search experiment at Fermilab has recently updated results from a search for {bar {nu}}{sub {mu}} {yields} {bar {nu}}{sub e} oscillations, using a data sample corresponding to 8.58 x 10{sup 20} protons on target in anti-neutrino mode. This high statistics result represent an increase in statistics of 52% compared to result published in 2010. An excess of 57.7 {+-} 28.5 events is observed in the energy range 200 MeV < E{sub {nu}} < 3000 MeV. The data favor LSND-like {bar {nu}}{sub {mu}} {yields} {bar {nu}}{sub e} oscillations over a background only hypothesis at 91.1% confidence level in the energy range 475 < E{sub {nu}} < 3000 MeV.

Djurcic, Zelimir

2012-01-01T23:59:59.000Z

46

NE-23 List of California Sites NE-23 Hattie Car-well, SAN/NSQA Division  

Office of Legacy Management (LM)

NE-23 NE-23 Hattie Car-well, SAN/NSQA Division Attached for your information is the list of California sites we identified in our search of Manhattdn Engineer District records for the Formerly Utilized Sites Remedial Action Program (FUSRAP). None of the facilities listed qualified"fbr'FUSRAP:'~- The only site in California,that was included in FUSRAP was Gilman Hall on the University of California-Berkeley Campus. All California sites that are in our Surplus Facilities Management Prcgram are under San Francisco Operations and are at the Santa Susana Field Laboratory or the University of California-Davis. If you have questions on any of the sites on the list, please call me at FTS 233-5439. /ct( Andrew Walls III. Desiynation and Certification Manager

47

Version 1.0 Lithium hyper ne splitting  

E-Print Network (OSTI)

Version 1.0 Lithium hyper#12;ne splitting Krzysztof Pachucki #3; Institute of Theoretical Physics approach for the calculation of relativistic m#11; 6 corrections to the lithium ground state hyper#12;ne problem. We will concentrate on lithium as the simplest alkali-metal atom, for which several precise

Pachucki, Krzysztof

48

Traffic Flow Measurement: Experiences with NeTraMet  

Science Conference Proceedings (OSTI)

This memo records experiences in implementing and using the Traffic Flow Measurement Architecture and Meter MIB. It discusses the implementation of NeTraMet (a traffic meter) and NeMaC (a combined manager and meter reader), considers the writing of ...

N. Brownlee

1997-03-01T23:59:59.000Z

49

Nuclear deformation of {sup 20}Ne from {sup 20}Ne(105 MeV)+{sup 208}Pb scattering  

Science Conference Proceedings (OSTI)

We have measured differential cross section for quasielastic scattering of {sup 20}Ne+{sup 208}Pb at a lab energy of 105 MeV. The data are analyzed by a rotational-model coupled-channels calculation including the 0{sup +} ground state, 2{sup +} and 4{sup +} states of {sup 20}Ne.

Strojek, I.; Czarnacki, W.; Keeley, N. [Department of Nuclear Reaction, The Andrzej Soltan Institute for Nuclear Studies, 00681 Warsaw (Poland); Kisielinski, M.; Piasecki, E.; Rusek, K. [Department of Nuclear Reaction, The Andrzej Soltan Institute for Nuclear Studies, 00681 Warsaw (Poland); Heavy Ion Laboratory, Warsaw University, 02093 Warsaw (Poland); Kliczewski, S.; Siudak, R. [Niewodniczanski Institute of Nuclear Physics PAN, 31342 Cracow (Poland); Kordiasz, A.; Trzcinska, A. [Heavy Ion Laboratory, Warsaw University, 02093 Warsaw (Poland); Koshchiy, E. [V. N. Karazin Kharkiv National University, 61077 Kharkiv (Ukraine); Kowalczyk, M. [Heavy Ion Laboratory, Warsaw University, 02093 Warsaw (Poland); Faculty of Physics, Warsaw University, 00681 Warsaw (Poland); Piorkowska, A.; Stuad, A. [University of Silesia, 40007 Katowice (Poland)

2010-04-26T23:59:59.000Z

50

CA Mr. Andrew Wallo, III, NE-23  

Office of Legacy Management (LM)

?9OQ, 95.5 L'E&nt Plaza, SW.. W.ashin@.m, D.C. 20024.2174, Tekphone: (202) 488AQOO ?9OQ, 95.5 L'E&nt Plaza, SW.. W.ashin@.m, D.C. 20024.2174, Tekphone: (202) 488AQOO 7117-03.B7.cdy.43 23 September 1987 CA Mr. Andrew Wallo, III, NE-23 Division of Facility & Site Decommissioning Projects U.S. Oepartment of Energy Germantown, Maryland 20545 Dear Mr. Wallo: ELIMINATION RECOMMENDATION -- COLLEGES AND UNIVERSITIES zh/ ! o-01 lM!tl5 ML)!o-05 PI 77!0> The attached elimination recoannendation was prepared in accordance . -1 rlL.0~ with your suggestion during our meeting on 22 September. The recommendation flD.o-02 includes 26 colleges and universities identified~in Enclosure 4 to Aerospace letter subject: Status of Actions - FUSRAP Site List, dated MO.07. 27 May 1987; three institutions (Tufts College, University of Virginia, UCIIOJ and the University of Washington) currently identified on the FUSRAP

51

Mr. Andrew Wallo, III, NE-23  

Office of Legacy Management (LM)

300, 955 L'E~~MI Phm.SW.:. Washin@on. LX. 200242174, T~kphonc(202)48ll. 5 300, 955 L'E~~MI Phm.SW.:. Washin@on. LX. 200242174, T~kphonc(202)48ll. 5 7117-03.87.cdy.43 23 September 1987 cA Mr. Andrew Wallo, III, NE-23 Division of Facility & Site Decommissioning Projects U.S. Department of Energy Germantown, Maryland 20545 Dear Mr. Wallo: ELIMINATION RECOMMENDATION -- COLLEGES AND UNIVERSITIES M/).0-05 pl 0.0% The attached elimination recommendation was prepared in accordance ML.05 with your suggestion during our meeting on 22 September. The recommendation flD.o-02 includes 26 colleges and universities identified.in Enclosure 4 to Aerospace letter subject: Status of Actions - FUSRAP Site List, dated NO.03. 27 May 1987; three institutions (Tufts College, University of Virginia, rJc..of and the University of Washington) currently identified on the FUSRAP

52

Pion inelastic scattering from sup 20 Ne  

SciTech Connect

Angular distributions for {sup 20}Ne({pi}{sup {plus minus}}, {pi}{sup {plus minus}}{prime}) were measured on the Energetic Pion Channel and Spectrometer (EPICS) at the Clinton P. Anderson Meson Physics Facility (LAMPF). Data were taken with both {pi}{sup {plus}} and {pi}{sup {minus}} over an angular range of 12{degree} to 90{degree} for T{sub {pi}}=180 MeV and with {pi}{sup +} from 15{degree} to 90{degree} for T{sub {pi}}=120 MeV. The data were analyzed using both the distorted-wave impulse approximation (DWIA) and the coupled-channels impulse approximation (CCIA) with collective transition densities. In addition, microscopic transition densities were used in the DWIA analysis for states in the lowest rotational bands. The transitions to the 6.73-MeV 0{sup +} and several 1{sup {minus}} states, including the states at 5.79 MeV and 8.71 MeV, were studied using several models for the transition density. Strong evidence for the importance of two-step routes in pion inelastic scattering was seen in several angular distributions, including the 5.79-MeV 1{sup {minus}}, the first three 4{sup +} states, and the 8.78-MeV 6{sup +}. 100 refs., 81 figs., 33 tabs.

Burlein, M. (Pennsylvania Univ., Philadelphia, PA (USA). Dept. of Physics)

1989-12-01T23:59:59.000Z

53

Property:EIA/861/IsoNe | Open Energy Information  

Open Energy Info (EERE)

IsoNe IsoNe Jump to: navigation, search Property Name ISO_NE Property Type Boolean Description Indicates that the organization conducts operations in the New England ISO region [1] References ↑ "EIA Form EIA-861 Final Data File for 2010 - 861 Webfile Layout for 2010.doc" Pages using the property "EIA/861/IsoNe" Showing 25 pages using this property. (previous 25) (next 25) B Bangor Hydro-Electric Co + true + Barton Village, Inc (Utility Company) + true + Bozrah Light & Power Company + true + C Central Maine Power Co + true + Central Vermont Pub Serv Corp + true + CinCap IV, LLC + true + CinCap V LLC + true + Cinergy Capital & Trading, Inc + true + City of Chicopee, Massachusetts (Utility Company) + true + City of Holyoke, Massachusetts (Utility Company) + true +

54

Neutral Current Elastic Interactions in MiniBooNE  

SciTech Connect

Neutral Current Elastic (NCE) interactions in MiniBooNE are discussed. In the neutrino mode MiniBooNE reported: the flux averaged NCE differential cross section as a function of four-momentum transferred squared, an axial mass (M{sub A}) measurement, and a measurement of the strange quark spin content of the nucleon, {Delta}s. In the antineutrino mode we present the background-subtracted data which is compared with the Monte Carlo predictions.

Dharmapalan, Ranjan; /Alabama U.

2011-10-01T23:59:59.000Z

55

D:\NE WEB Sites\NE\nerac\nov2001minutes.wpd  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

November 5-6, 2001, DoubleTree Hotel, Arlington, Virginia November 5-6, 2001, DoubleTree Hotel, Arlington, Virginia NERAC members present: John Ahearne Robert Long Joseph Comfort Warren F. Miller, Jr. Michael L. Corradini Benjamin F. Montoya Jose Luis Cortez Sekazi Mtingwa Allen Croff Lura Powell James Duderstadt (Chair) Richard Reba Marvin Fertel Joy Rempe Beverly Hartline John Taylor Andrew Klein Charles E. Till Dale Klein (Monday only) Neil Todreas NERAC members absent: Thomas Cochran Allen Sessoms Maureen S. Crandall Daniel C. Sullivan Steve Fetter C. Bruce Tarter Leslie Hartz Ashok Thadani (ad hoc) J. Bennett Johnston Joan Woodard Linda C. Knight Also present: Robert Card, Under Secretary, USDOE Nancy Carder, NERAC Staff Charles Forsberg, Researcher, Oak Ridge National Laboratory Norton Haberman, Senior Technical Advisor, NE, USDOE

56

Mn deposition on Ni{sub 2}MnGa(100)  

Science Conference Proceedings (OSTI)

We report the study of Mn adlayers on a Mn deficient Ni{sub 2}MnGa(100) surface by using low energy electron diffraction (LEED). The spot profile analysis indicates that after 0.2 monolayer (ML) deposition, the LEED spots become very sharp. This pattern indicates the removal of Mn vacancies formed on the surface due to Mn deficiency. But with further growth of Mn layers on this surface, the LEED spots become broad.

Nayak, J.; Rai, Abhishek; D'Souza, S. W.; Maniraj, M.; Barman, S. R. [UGC-DAE Consortium for Scientific Research, Khandwa Road, Indore, 452001, M.P. (India)

2012-06-05T23:59:59.000Z

57

Category:Minneapolis, MN | Open Energy Information  

Open Energy Info (EERE)

MN MN Jump to: navigation, search Go Back to PV Economics By Location Media in category "Minneapolis, MN" The following 16 files are in this category, out of 16 total. SVFullServiceRestaurant Minneapolis MN Northern States Power Co (Minnesota) Excel Energy.png SVFullServiceRestauran... 89 KB SVHospital Minneapolis MN Northern States Power Co (Minnesota) Excel Energy.png SVHospital Minneapolis... 85 KB SVLargeHotel Minneapolis MN Northern States Power Co (Minnesota) Excel Energy.png SVLargeHotel Minneapol... 85 KB SVLargeOffice Minneapolis MN Northern States Power Co (Minnesota) Excel Energy.png SVLargeOffice Minneapo... 82 KB SVMediumOffice Minneapolis MN Northern States Power Co (Minnesota) Excel Energy.png SVMediumOffice Minneap... 83 KB SVMidriseApartment Minneapolis MN Northern States Power Co (Minnesota) Excel Energy.png

58

An Audiomagnetotelluric Survey Over The Chaves Geothermal Field (Ne  

Open Energy Info (EERE)

Page Page Edit History Facebook icon Twitter icon » An Audiomagnetotelluric Survey Over The Chaves Geothermal Field (Ne Portugal) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: An Audiomagnetotelluric Survey Over The Chaves Geothermal Field (Ne Portugal) Details Activities (0) Areas (0) Regions (0) Abstract: In an attempt to define the resistivity model of the Chaves geothermal field in NE Portugal, a detailed survey with scalar audiomagnetotelluric measurements was performed. The soundings were made in the frequency range from 2300 to 4.1 Hz. Electrical resistivity models were derived from the application of 1-D inversion, 2-D trial and error modeling and 2-D inversion procedures. The resistivities inside the geothermal field are low, reaching not more than 30 Ωm and increasing up to 60-150 Ωm

59

Municipal Energy Agency of NE | Open Energy Information  

Open Energy Info (EERE)

Municipal Energy Agency of NE Municipal Energy Agency of NE Jump to: navigation, search Name Municipal Energy Agency of NE Place Nebraska Utility Id 21352 Utility Location Yes Ownership P NERC Location MRO NERC MRO Yes NERC SPP Yes NERC WECC Yes RTO SPP Yes ISO MISO Yes Operates Generating Plant Yes Activity Generation Yes Activity Buying Transmission Yes Activity Wholesale Marketing Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png No rate schedules available. Average Rates No Rates Available References ↑ "EIA Form EIA-861 Final Data File for 2010 - File1_a" Retrieved from

60

19Ne levels studied with the 18F(d,n)19Ne*(18F+p) reaction  

Science Conference Proceedings (OSTI)

A good understanding of the level structure of 19Ne around the proton threshold is critical to estimating the destruction of long-lived 18F in novae. Here we report the properties of levels in 19Ne in the excitation energy range of 6.9 Ex 8.4 MeV studied via the proton-transfer 18F(d, n)Ne reaction at the Holifield Radioactive Ion Beam Facility. The populated 19Ne levels decay by breakup into p + 18F and + 15O particles. The results presented in this manuscript are those of levels that are simultaneously observed from the breakup into both channels. An s-wave state is observed at 1468 keV above the proton threshold, which is a potential candidate for a predicted broad J = 1/2+ state. The proton and partial widths are deduced to be p = 228 50 keV and = 130 30 keV for this state.

Adekola, A. S. [Ohio University, Athens; Brune, C. R. [Ohio University; Bardayan, Daniel W [ORNL; Blackmon, Jeffery C [Louisiana State University; Chae, K. Y. [University of Tennessee, Knoxville (UTK); Cizewski, J. A. [Rutgers University; Jones, K. L. [University of Tennessee, Knoxville (UTK); Kozub, R. L. [Tennessee Technological University; Massey, T. [Ohio University; Nesaraja, Caroline D [ORNL; Pain, Steven D [ORNL; ShrinerJr., J. F. [Tennessee Technological University; Smith, Michael Scott [ORNL; Thomas, J. S. [Rutgers University

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ne sd mn" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

RECIPIENT:SD Energy Office u.s. DEP.-illTlVlENT OF ENERGY EERE PROJECT MANAG  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

SD Energy Office SD Energy Office u.s. DEP.-illTlVlENT OF ENERGY EERE PROJECT MANAG EMENT CENTER NEPA DETERMINATION PROJECf TITLE : Technical analysis for geothermal system Page I of2 STATE: SO Funding Opportunity Announcement Number Procurement Instrument Number NEPA Control Number CID Number DE-FOA-OOQOQS2 DE-EEOOOO145 GFO-09-152-007 0 Based on my review of abe information concerning the proposed action, as NEPA Compliance Officer (authorized under DOE Order 45I.tA), I have made tbe following determination : ex, EA, EIS APPENDIX AND NUMBER: Description: A9 Information gathering (including. but not limited to. literature surveys, inventories, audits), data analysis (including computer modeling). document preparation (such as conceptual design or feasibility studies, analytical energy supply

62

MiniBooNE "Windows on the Universe"  

Science Conference Proceedings (OSTI)

Progress in the last few decades has left neutrino physics with several vexing issues. Among them are the following questions: (1) Why are lepton mixing angles so different from those in the quark sector? (2) What is the most probable range of the reactor mixing angle? (3) Is the atmospheric mixing angle maximal? (4) What is the number of fermion generations? These are some of the issues that neutrino science hopes to study; this article will explore these questions as part of a more general scientific landscape, and will discuss the part MiniBooNE might play in this exploration. We discuss the current state of measurements taken by MiniBooNE, and emphasize the uniqueness of neutrino oscillations as an important probe into the 'Windows on the Universe.'

Stefanski, Ray; /Fermilab

2010-12-09T23:59:59.000Z

63

File:EIA-Williston-NE-Gas.pdf | Open Energy Information  

Open Energy Info (EERE)

Williston-NE-Gas.pdf Williston-NE-Gas.pdf Jump to: navigation, search File File history File usage Williston Basin, Northeast Part By 2001 Gas Reserve Class Size of this preview: 776 × 600 pixels. Full resolution ‎(6,600 × 5,100 pixels, file size: 5.95 MB, MIME type: application/pdf) Description Williston Basin, Northeast Part By 2001 Gas Reserve Class Sources Energy Information Administration Authors Samuel H. Limerick; Lucy Luo; Gary Long; David F. Morehouse; Jack Perrin; Robert F. King Related Technologies Oil, Natural Gas Creation Date 2005-09-01 Extent Regional Countries United States UN Region Northern America States Montana, North Dakota, South Dakota File history Click on a date/time to view the file as it appeared at that time. Date/Time Thumbnail Dimensions User Comment

64

Overview of DOE-NE Proliferation and Terrorism Risk Assessment  

SciTech Connect

Research objectives are: (1) Develop technologies and other solutions that can improve the reliability, sustain the safety, and extend the life of current reactors; (2) Develop improvements in the affordability of new reactors to enable nuclear energy; (3) Develop Sustainable Nuclear Fuel Cycles; and (4) Understand and minimize the risks of nuclear proliferation and terrorism. The goal is to enable the use of risk information to inform NE R&D program planning. The PTRA program supports DOE-NE's goal of using risk information to inform R&D program planning. The FY12 PTRA program is focused on terrorism risk. The program includes a mix of innovative methods that support the general practice of risk assessments, and selected applications.

Sadasivan, Pratap [Los Alamos National Laboratory

2012-08-24T23:59:59.000Z

65

Neutrino and Antineutrino Cross sections at MiniBooNE  

SciTech Connect

The MiniBooNE experiment has reported a number of high statistics neutrino and anti-neutrino cross sections -among which are the charged current quasi-elastic (CCQE) and neutral current elastic (NCE) neutrino scattering on mineral oil (CH2). Recently a study of the neutrino contamination of the anti-neutrino beam has concluded and the analysis of the anti-neutrino CCQE and NCE scattering is ongoing.

Dharmapalan, Ranjan; /Alabama U.

2011-10-01T23:59:59.000Z

66

Ne IX emission-line ratios in solar active regions  

Science Conference Proceedings (OSTI)

Emission-line ratios for Ne IX are derived and compared with observational data for solar active regions obtained with the SOLEX B spectrometer on the P78-1 satellite. Excellent agreement is obtained, providing support for the atomic data adopted in the calculations and resolving discrepancies between existing theoretical calculations and solar data. The calculated R-ratio for the low-density limit agrees well with the SOLEX observations. 47 references.

Keenan, F.P.; Mccann, S.M.; Kingston, A.E.; Mckenzie, D.L.

1987-07-01T23:59:59.000Z

67

Microsoft Word - Mn.doc  

NLE Websites -- All DOE Office Websites (Extended Search)

5 5 Structural Determination of Marine Bacteriogenic Manganese Oxides John R. Bargar, Samuel M. Webb (Stanford Synchrotron Radiation Laboratory), and Bradley M. Tebo (Oregon Health and Science University) Bacterial oxidation of Mn(II) impacts the global geochemical cycling of carbon, nitrogen, sulfur, nutrients, and contaminants in the environment. Manganese is abundant in the biosphere (~10 14 Kg of suspended and dissolved manganese in the oceans) and is second only to iron in relative terrestrial abun- dance of transition metals. Manganese is an important nutrient in the marine water column and is fundamentally required for photosynthesis. The acquisition of manganese by organisms and the biogeochemistry of manganese in the oceans is therefore an

68

2013 Annual DOE-NE Materials Research Coordination Meeting | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

2013 Annual DOE-NE Materials Research Coordination Meeting 2013 Annual DOE-NE Materials Research Coordination Meeting 2013 Annual DOE-NE Materials Research Coordination Meeting The Reactor Materials element of the Nuclear Energy Enabling Technologies (NEET) program conducted its FY 2013 coordination meeting as a series of four web-conferences to act as a forum for the nuclear materials research community. The purpose of this meeting was to report on current and planned nuclear materials research, identify new areas of collaboration and promote greater coordination among the various Office of Nuclear Energy (NE) programs. Currently, materials research is performed in several NE programs, including NE Advanced Modeling and Simulation (NEAMS), Fuel Cycle Research and Development (FCRD), Advanced Reactor Technologies

69

2013 Annual DOE-NE Materials Research Coordination Meeting | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

2013 Annual DOE-NE Materials Research Coordination Meeting 2013 Annual DOE-NE Materials Research Coordination Meeting 2013 Annual DOE-NE Materials Research Coordination Meeting The Reactor Materials element of the Nuclear Energy Enabling Technologies (NEET) program conducted its FY 2013 coordination meeting as a series of four web-conferences to act as a forum for the nuclear materials research community. The purpose of this meeting was to report on current and planned nuclear materials research, identify new areas of collaboration and promote greater coordination among the various Office of Nuclear Energy (NE) programs. Currently, materials research is performed in several NE programs, including NE Advanced Modeling and Simulation (NEAMS), Fuel Cycle Research and Development (FCRD), Advanced Reactor Technologies

70

DOE - Office of Legacy Management -- Elk River Reactor - MN 01  

Office of Legacy Management (LM)

Elk River Reactor - MN 01 FUSRAP Considered Sites Site: Elk River Reactor (MN.01 ) Eliminated from consideration under FUSRAP - Reactor was dismantled and decommissioned by 1974...

71

R-Process in Collapsing O/Ne/Mg Cores  

E-Print Network (OSTI)

Several circumstantial arguments point to the formation of the third r-process peak at A about 190, near platinum, in stars of mass of about 8-10 solar masses: 1) The delayed production of europium with respect to iron imposes a time scale that restricts the progenitor stars to less than about 10 solar masses; 2) the r-process demands a dominant robust mechanism at least for barium and above, since the relative abundance pattern of those r-process elements in low-metallicity stars is consistent with the solar pattern; 3) stars of about 8-10 solar masses produce nearly identical degenerate O/Ne/Mg cores that collapse due to electron capture; and 4) the resulting low-mass cores may produce both an r-process in a prompt explosion and a subsequent r-process in a neutrino driven wind. The prompt explosion of an O/Ne/Mg core yields low entropy and low electron fraction, and hence may produce a reasonable r-process peak at A about 190 as well as all of the r-process elements with Z greater than 56. The possible diff...

Wheeler, J C; Hillebrandt, W; Cowan, John J.; Hillebrandt, Wolfgang

1997-01-01T23:59:59.000Z

72

R-Process in Collapsing O/Ne/Mg Cores  

E-Print Network (OSTI)

Several circumstantial arguments point to the formation of the third r-process peak at A about 190, near platinum, in stars of mass of about 8-10 solar masses: 1) The delayed production of europium with respect to iron imposes a time scale that restricts the progenitor stars to less than about 10 solar masses; 2) the r-process demands a dominant robust mechanism at least for barium and above, since the relative abundance pattern of those r-process elements in low-metallicity stars is consistent with the solar pattern; 3) stars of about 8-10 solar masses produce nearly identical degenerate O/Ne/Mg cores that collapse due to electron capture; and 4) the resulting low-mass cores may produce both an r-process in a prompt explosion and a subsequent r-process in a neutrino driven wind. The prompt explosion of an O/Ne/Mg core yields low entropy and low electron fraction, and hence may produce a reasonable r-process peak at A about 190 as well as all of the r-process elements with Z greater than 56. The possible differences in the neutrino-driven wind and associated r-process due to the low-mass neutron stars expected in this mass range are also discussed.

J. Craig Wheeler; John J. Cowan; Wolfgang Hillebrandt

1997-11-22T23:59:59.000Z

73

A Case Study For Geothermal Exploration In The Ne German Basin...  

Open Energy Info (EERE)

icon Twitter icon A Case Study For Geothermal Exploration In The Ne German Basin- Integrated Interpretation Of Seismic Tomography, Litho-Stratigraphy, Salt Tectonics, And...

74

J.L. Liscum-Powell, S.D. Pautz, C.R. Drumm, W.C. Fan, W.J. Bohnhoff...  

National Nuclear Security Administration (NNSA)

of the Ceptre Code to Cable SGEMP Problems J.L. Liscum-Powell, * S.D. Pautz, * C.R. Drumm, * W.C. Fan, * W.J. Bohnhoff, * L.J. Lorence * * Sandia National Laboratories,...

75

Session S2H 978-1-61284-469-5/11/$26.00 2011 IEEE October 12 -15, 2011, Rapid City, SD  

E-Print Network (OSTI)

Session S2H 978-1-61284-469-5/11/$26.00 ©2011 IEEE October 12 - 15, 2011, Rapid City, SD 41st ASEE of basic topics in materials science including topics such as atomic structure, mechanical properties

Heckler, Andrew F.

76

Idaho National Laboratory DOE-NE's National Nuclear Capability-  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

4-2023 4-2023 Idaho National Laboratory DOE-NE's National Nuclear Capability- Developing and Maintaining the INL Infrastructure TEN-YEAR SITE PLAN DOE/ID-11474 Final June 2012 Sustainable INL continues to exceed DOE goals for reduction in the use of petroleum fuels - running its entire bus fleet on biodiesel while converting 75% of its light-duty fleet to E85 fuel. The Energy Systems Laboratory (ESL), slated for completion this year, will be a state-of-the-art laboratory with high-bay lab space where leading bioenergy feedstock processing, advanced battery testing, and hybrid energy systems integration research will be conducted. The Advanced Test Reactor is the world's most advanced nuclear research capability - crucial to (1) the ongoing development of safe, efficient

77

NE-24 Unlverslty of Chicayo Remedial Action Plan  

Office of Legacy Management (LM)

(YJ 4 tlsj .?I2 (YJ 4 tlsj .?I2 416 17 1983 NE-24 Unlverslty of Chicayo Remedial Action Plan 22&d 7 IA +-- E. I.. Keller, Director Technical Services Division Oak Ridge Operations Ufflce In response to your memorandum dated July 29, 1983, the Field Task Proposal/Agreement (FTP/A) received frw Aryonne National Laboratory (ANL) appears to be satisfactory, and this office concurs in the use of ANL to provide the decontamination effort as noted in the FTP/A. The final decontaminatton report should Include the data needed for certiff- cation of the cleanup and any contamination left In place, e.g., sewer lines should be so documented in the permanent records of the University as well as the certification documents and reports. The remedial action to be conducted appears to be clearly InsIgnifIcant from an environmental

78

Participants: William Naughton, COHMED Bill Sherman, NE HLRW Task Force  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

conference call May 27, 1998 conference call May 27, 1998 Participants: William Naughton, COHMED Bill Sherman, NE HLRW Task Force Bob Fronczak, AAR Mike Butler, UETC Ray English, DOE-NR George Ruberg, UETC Kevin Blackwell, FRA Markus Popa, DOE-RW Sandy Covi, UP The Rail Topic Group is currently in a transitional mode, moving simultaneously toward closure of the two rail information matrices, Comparison of CVSA Recommended National Procedures and Out-Of-Service Criteria for the Enhanced Safety Inspection of Commercial Highway Vehicles Transporting Transuranics, Spent Nuclear Fuel, and High Level Waste to Rail Inspection Standards, and Rail and Highway Regulations Relative to the Transportation of Radioactive Materials and their Applicability to States, Tribes, Shippers, and Carriers, (both

79

EG&G SURVEY REPORT NE-F-003  

Office of Legacy Management (LM)

EBJG EBJG -ENERGY MEASUREMENTS GROUP EG&G SURVEY REPORT NE-F-003 FEBRUARY 1983 NJT& THE REMOTE SENSING lRtlORlllORY OF THE UNITED STATES DEPARTMENT OF ENERGY AN AERIAL RADIOLOGICAL SURVEY OF AN AREA SURROUNDING THE FORMER M IDDLESEX SAMPLING PLANT IN M IDDLESEX, N E W JERSEY DATE OF SURVEY: M A Y 1978 DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or

80

PNM Resources 2401 Aztec NE, MS-Z100  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

PNM Resources PNM Resources 2401 Aztec NE, MS-Z100 Albuquerque, NM 87107 505-241-2025 Fax 505 241-2384 PNMResources.com October 29, 2013 Mr. Christopher Lawrence Office of Electricity Delivery and Energy Reliability (OE-20) U.S. Department of Energy 1000 Independence Avenue, SW Washington, DC 20585 Submitted electronically via email to: Christopher.Lawrence@hq.doe.gov Dear Mr. Lawrence: Subject: Department of Energy (DOE)- Improving Performance of Federal Permitting and Review of Infrastructure Projects, Request for Information, 78 Fed. Reg. 53436 (Aug. 29, 2013) PNM Resources (PNMR) is an energy holding company with 2012 consolidated operating revenues of $1.3 billion. Through its regulated utilities, PNM and TNMP, PNMR serves electricity to more than 739,000 homes and businesses in New

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81

CA M r. Andrew Wallo, III. NE-23  

Office of Legacy Management (LM)

i5W 95.5 L' i5W 95.5 L' E&nt plom. S. W.:. Washingr on. D.C. ZOOX2i74, Tekphm: (202) 488-6OGb 7II7-03.87.cdy.43 23 September 1987. Ii CA M r. Andrew Wallo, III. NE-23 Division of Facility & Site Decommissioning Projects U.S. Department of Energy Germantown, Maryland 20545 Dear M r. Wallo: ELIMINATION RECOMMENDATION -- COLLEGES AND UNIVERSITIES pqq.0' 05 PI ;p.03- The attached elimination recommendation was prepared in accordance ,I ML.05 with your suggestion during our meeting on 22 September. The recommendation flO.O-02 includes 26 colleges and universities identified in Enclosure 4 to Aerospace letter subject: Status of Actions - FUSRAP Site List, dated 27 May 1987; three institutions (Tufts College, University of Virginia, and the University of Washington) currently identified on the FUSRAP

82

The DA{Phi}NE beam position monitors  

SciTech Connect

The beam diagnostics network of DA{Phi}NE, the Frascati {Phi}-factory, includes more than 110 beam position monitors divided between button monitors and striplines. The shape of the vacuum chamber changes along the accelerator implying several different geometries for these monitors. Moreover, in the two interaction regions of the collider where the electron and positron beams pass into the same chamber, a six-button configuration has been used. A bench calibration of each family of BPMs and striplines is being performed. A polynomial correction function has been derived by fitting the calibration results. An analytical-numerical analysis of the buttons` geometry has been done in order to compare the experimental with the theoretical results. {copyright} {ital 1997 American Institute of Physics.}

Ghigo, A.; Sannibale, F.; Serio, M.; Vaccarezza, C. [INFN Laboratori Nazionali di Frascati-00044 Frascati (Roma)-Italy

1997-01-01T23:59:59.000Z

83

Charged-Current Interaction Measurements in MiniBooNE  

SciTech Connect

Neutrino oscillation is the only known phenomenon for physics beyond the standard model. To investigate this phenomenon, the understanding of low energy neutrino scattering (200NE finds that a simple Fermi gas model, with appropriate adjustments, accurately characterizes the CCQE events on carbon. The extracted parameters include an effective axial mass, MA=1.23 {+-} 0.20 GeV, and a Pauli-blocking parameter, kappa = 1.019 {+-} 0.011.

Katori, Teppei; /Indiana U.

2007-09-01T23:59:59.000Z

84

Microsoft PowerPoint - NEAC Battelle NE Capabilities 062408.ppt  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

R&D Facility Requirements NEAC Meeting Progress Report June 24, 2008 2 Facilitization of U.S. Nuclear R&D Infrastructure Three-step study process: * First, ASNE requested Battelle Memorial Institute to develop Industry- and-University-supported list of capabilities and facilities necessary to conduct a comprehensive nuclear R&D program. (Draft, June 12, 2008) * Second, INL, using input from all DOE and other sources, will determine current facilities and their condition and availability to support next 20 years of nuclear R&D. (Draft, June 30, 2008) * Third, recommendations will be made on priorities and on existing facilities to be maintained/preserved or otherwise supported by NE regardless of location or ownership. (Executive Team Meeting, July 1, 2008)

85

26081-Chug. SD  

Science Conference Proceedings (OSTI)

... YAW Youth Area Watch; students work with scientists in Exxon Valdez Spill funded research activities, spending up to three days on research ...

2003-09-29T23:59:59.000Z

86

26081-Chug. SD  

Science Conference Proceedings (OSTI)

... students work with scientists in Exxon Valdez Spill funded research ... viable after high school; Accomplished at Secretary's Commission on Achieving ...

2003-09-29T23:59:59.000Z

87

IMPROVEMENT OF CdMnTe DETECTOR PERFORMANCE BY MnTe PURIFICATION  

Science Conference Proceedings (OSTI)

Residual impurities in manganese (Mn) are a big obstacle to obtaining high-performance CdMnTe (CMT) X-ray and gamma-ray detectors. Generally, the zone-refining method is an effective way to improve the material's purity. In this work, we purified the MnTe compounds combining the zone-refining method with molten Te, which has a very high solubility for most impurities. We confirmed the improved purity of the material by glow-discharge mass spectrometry (GDMS). We also found that CMT crystals from a multiply-refined MnTe source, grown by the vertical Bridgman method, yielded better performing detectors.

Kim, K.H.; Bolotnikov, A.E.; Camarda, G.S.; Tappero, R.; Hossain, A.; Cui, Y.; Yang, G.; Gul, R.; and James, R.B.

2011-04-25T23:59:59.000Z

88

EA-1909: South Table Wind Project, Kimball County, NE | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

09: South Table Wind Project, Kimball County, NE 09: South Table Wind Project, Kimball County, NE EA-1909: South Table Wind Project, Kimball County, NE Summary DOE's Western Area Power Administration is preparing this EA to evaluate the environmental impacts of interconnecting the proposed South Table Wind Project, which would generate approximately 60 megawatts from about 40 turbines, to Western's existing Archer-Sidney 115-kV Transmission Line in Kimball County, Nebraska. Public Comment Opportunities None available at this time. Documents Available for Download August 28, 2012 EA-1909: Finding of No Significant Impact South Table Wind Project, Kimball County, NE July 16, 2012 EA-1909: Final Environmental Assessment South Table Wind Project, Kimball County, NE February 29, 2012 EA-1909: Draft Environmental Assessment

89

Solid Solution Phases in Olivine-Type LiMnPO4/MnP4System  

NLE Websites -- All DOE Office Websites (Extended Search)

Solid Solution Phases in Olivine-Type LiMnPO4MnP4System Title Solid Solution Phases in Olivine-Type LiMnPO4MnP4System Publication Type Journal Article Year of Publication 2009...

90

The MiniBooNE detector technical design report  

SciTech Connect

The MiniBooNE experiment [1] is motivated by the LSND observation, [2] which has been interpreted as {nu}{sub {mu}} {yields} {nu}{sub e} oscillations, and by the atmospheric neutrino deficit, [3,4,5] which may be ascribed to {nu}{sub {mu}} oscillations into another type of neutrino. MiniBooNE is a single-detector experiment designed to: obtain {approx} 1000 {nu}{sub {mu}} {yields} {nu}{sub e} events if the LSND signal is due to {nu}{sub {mu}} {yields} {nu}{sub e} oscillations, establishing the oscillation signal at the > 5{sigma} level as shown in Fig. 1.1; extend the search for {nu}{sub {mu}} {yields} {nu}{sub e} oscillations significantly beyond what has been studied previously if no signal is observed; search for {nu}{sub {mu}} disappearance to address the atmospheric neutrino deficit with a signal that is a suppression of the rate of {nu}{sub {mu}}C {yields} {mu}N events from the expected 600,000 per year; measure the oscillation parameters as shown in Fig. 1.2 if oscillations are observed; and test CP conservation in the lepton sector if oscillations are observed by running with separate {nu}{sub {mu}} and {bar {nu}}{sub {mu}} beams. The detector will consist of a spherical tank 6.1 m (20 feet) in radius, as shown in Fig. 1.3, that stands in a 45-foot diameter cylindrical vault. An inner tank structure at 5.75 m radius will support 1280 8-inch phototubes (10% coverage) pointed inward and optically isolated from the outer region of the tank. The tank will be filled with 807 t of mineral oil, resulting in a 445 t fiducial volume. The outer tank volume will serve as a veto shield for identifying particles both entering and leaving the detector with 240 phototubes mounted on the tank wall. Above the detector tank will be an electronics enclosure that houses the fast electronics and data acquisition system and a utilities enclosure that houses the plumbing, overflow tank, and calibration laser. The detector will be located {approx} 550 m from the Booster neutrino source. The neutrino beam, produced using 8 GeV protons from the Booster at FNAL, will consist of a target within a focusing system, followed by a {approx}50 m long pion decay volume. The low energy, high intensity and 1 {micro}s time-structure of a neutrino beam produced from the Booster beam are ideal for this experiment. We assume that the Booster can reliably deliver protons for a typical run which is two-thirds of a calendar year. The sensitivities discussed above assume the experiment receives 5 x 10{sup 20} protons per year. This Booster experiment is compatible with the Fermilab collider and MI programs. The Booster must run at 7.5 Hz to accommodate the MiniBooNE and collider programs simultaneously. The current schedule calls for data-taking to begin by the end of calendar year 2001.

I. Stancu et al.

2003-04-18T23:59:59.000Z

91

MN Office of Energy Security | Open Energy Information  

Open Energy Info (EERE)

MN Office of Energy Security MN Office of Energy Security Jump to: navigation, search Name MN Office of Energy Security Place St. Paul, MN Website http://www.mnofficeofenergysec References MN Office of Energy Security[1] Information About Partnership with NREL Partnership with NREL Yes Partnership Type Test & Evaluation Partner Partnering Center within NREL Electricity Resources & Building Systems Integration LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! MN Office of Energy Security is a company located in St. Paul, MN. References ↑ "MN Office of Energy Security" Retrieved from "http://en.openei.org/w/index.php?title=MN_Office_of_Energy_Security&oldid=379158" Categories: Clean Energy Organizations Companies Organizations

92

CA CAIOlf Mr. Andrew Wallo. III, NE-23  

Office of Legacy Management (LM)

kire 7900. 955 L*E,,fa,u PLUG S. W.. Washin@ on. D.C. 20024-2174, Tekphme: (202) 488-6000 kire 7900. 955 L*E,,fa,u PLUG S. W.. Washin@ on. D.C. 20024-2174, Tekphme: (202) 488-6000 7117-03.87.cdy.43 23 September 1987 CA CAIOlf Mr. Andrew Wallo. III, NE-23 Division of Facility & Site Decommissioning Projects U.S. Department of Energy Germantown, Maryland 20545 CT.05 FL .0-o/ lti.Ob id.Or Dear Mr. Wallo: In/. O-01 flA.05 ELIMINATION RECOMMENDATION -- COLLEGES AND UNIVERSITIES Mbj.o-03 I4 v.o+ The attached elimination recommendation was prepared in accordance ML.o= with your suggestion during our meeting on 22 September. The recommendation nO.O-02 includes 26 colleges and universities identified.in Enclosure 4 to Aerospace letter subject: Status of Actions - FUSRAP Site List, dated N0.63' 27 May 1987; three institutions (Tufts College, University of Virginia, kfC900

93

{sup 17}O({alpha},{gamma}){sup 21}Ne and {sup 17}O({alpha},n){sup 20}Ne for the weak s process  

Science Conference Proceedings (OSTI)

The ratio of the reaction rates of the competing channels {sup 17}O({alpha}{gamma}){sup 21}Ne and {sup 17}O({alpha},n){sup 20}Ne determines the efficiency of {sup 16}O as a neutron poison in the s process in low metallicity rotating stars. It has a large impact on the element production, either producing elements to the mass range of A=90 in case of a significant poisoning effect or extending the mass range up to the region of A=150 if the {gamma} channel is of negligible strength. We present an improved study of the reaction {sup 17}O({alpha},n){sup 20}Ne, including an independent measurement of the {sup 17}O({alpha},n{sub 1}){sup 20}Ne channel. A simultaneous R-Matrix fit to both the n{sub 0} and the n{sub 1} channels has been performed. New reaction rates, including recent data on the {sup 17}O({alpha},{gamma}){sup 21}Ne reaction, have been calculated and used as input for stellar network calculations and their impact on the s process in rotating massive stars is discussed.

Best, A.; Goerres, J.; Beard, M.; Couder, M.; Boer, R. de; Falahat, S.; Gueray, R. T.; Kontos, A.; Kratz, K.-L.; LeBlanc, P. J.; Li, Q.; O'Brien, S.; Oezkan, N.; Pignatari, M.; Sonnabend, K.; Talwar, R.; Tan, W.; Uberseder, E.; Wiescher, M. [Department of Physics, University of Notre Dame, Notre Dame, IN 46556 (United States); Department of Physics, University of Notre Dame, Notre Dame, IN 46556 (United States) and Department for Biogeochemistry, Max-Planck-Institute for Chemistry, 55020 Mainz (Germany); Department of Physics, Kacaeli University, Umuttepe 41380, Kocaeli (Turkey); Department of Physics, University of Notre Dame, Notre Dame, IN 46556 (United States); Department for Biogeochemistry, Max-Planck-Institute for Chemistry, 55020 Mainz (Germany); Department of Physics, University of Notre Dame, Notre Dame, IN 46556 (United States); Department of Physics, Kacaeli University, Umuttepe 41380, Kocaeli (Turkey); Department of Physics, University of Basel, Basel 4056 (Switzerland); Institute for Applied Physics, Goethe-University Frankfurt, 60325 Frankfurt (Germany); Department of Physics, University of Notre Dame, Notre Dame, IN 46556 (United States)

2012-11-20T23:59:59.000Z

94

Level-resolved R-matrix calculations for the electron-impact excitation of Ne{sup 3+} and Ne{sup 6+}  

SciTech Connect

Large-scale R-matrix calculations are carried out for the electron-impact excitation of Ne{sup 3+} and Ne{sup 6+}. For Ne{sup 3+}, a 581-LSJ-level R-matrix intermediate coupling frame transformation calculation is made for excitations up to the n=4 shell. For some transitions, large effective collision strength differences are found with current 23-jKJ-level Breit-Pauli R-matrix and earlier 22-LSJ-level R-matrix jj omega (JAJOM) calculations. For Ne{sup 6+}, a 171-jKJ-level Breit-Pauli R-matrix calculation is made for excitations up to the n=5 shell. For some transitions, large effective collision strength differences are found with current 46-jKJ-level Breit-Pauli R-matrix and earlier 46-LSJ-level R-matrix JAJOM calculations. Together with existing R-matrix calculations for other ion stages, high-quality excitation data are now available for astrophysical and laboratory plasma modeling along the entire Ne isonuclear sequence.

Ludlow, J. A.; Lee, T. G.; Ballance, C. P.; Loch, S. D.; Pindzola, M. S. [Department of Physics, Auburn University, Auburn, Alabama 36849 (United States)

2011-08-15T23:59:59.000Z

95

Composition-structure-property-performance relationship inMn-substituted LiMn2O4  

DOE Green Energy (OSTI)

The spinel LiMn{sub 2}O{sub 4} has been extensively studied as a positive electrode active material in lithium rechargeable batteries. Partial substitution of Mn by another metal has also been the subject of recent study in an effort to improve the cycling performance. In general, the literature has shown that Mn substitution results in improved cycling stability at the expense of capacity (1,2). Resistance to the formation of tetragonal phase upon lithiation of the starting spinel (via a higher nominal Mn oxidation state in the substituted spinel) has been suggested as a mechanism for the improved performance. The degree of substitution is an important factor to optimize in order to minimize capacity loss and costs. The spectroscopic investigations on LiMn{sub 2}O{sub 4} described in the previous paper (LixMn2O4) confirmed that the cooperative Jahn-Teller effect (CJTE) from the [Mn{sup 3+}O{sub 6}] octahedra is the mechanism for the cubic to tetragonal phase transformation. The driving force for the CJTE is based upon the electronic structure, therefore changes in electronic structure should lead to changes in the phase behavior. The fact that the LiMn{sub 1.5}Ni{sub 0.5}O{sub 4} does not form tetragonal phase upon discharging (FUJI3, MUCK?), unlike the 100% Mn{sup 4+} spinel Li{sub 4}Mn{sub 5}O{sub 12} (THAC5), led to the hypothesis that an increased degree of covalency as a source for the behavior. An increased covalence would remove the driving force for the transformation, the increased electronic stability achieved in tetragonally-distorted [Mn{sup 3+}O{sub 6}] octahedra, due to a change in electron density and widening of the Mn 3d bands. The STH field is dependent upon the amount of unpaired spin density transferred between the magnetic (transition-metal) and diamagnetic ions through an intermittent oxygen ion, attributable to overlap and electron transfer effects. Therefore, the magnitude of the STH coupling constant reflects the degree of covalency (GESC, HUAN). In the case of LiMn{sub 2-y}Me{sub y}O{sub 4}, the STH coupling constant characterizes the amount of unpaired spin density transferred to the Li{sup +} from the Mn, Co, or Ni. Similarly, the La/Lb ratio of the Mn L-XES is sensitive to the amount of electron density at the Mn site as a higher ratio indicates that the Mn 3d{sub 5/2} level is more populated (GRUS1). An investigation into the effects of Mn-substitution on the electronic structure along with the ramifications to the phase behavior upon changing lithium content was carried out. To accomplish this, a set of LiMn{sub 2-y}Me{sub y}O{sub 4} with Me = Li, Co, or Ni over a range of y were synthesized, characterized, and subjected to changes in lithium content by various techniques.

Horne, Craig R.; Richardson, Thomas J.; Gee, B.; Tucker, Mike; Grush, Melissa M.; Bergmann, Uwe; Striebel, Kathryn A.; Cramer, StephenP.; Reimer, Jeffrey A.; Cairns, Elton J.

2001-03-09T23:59:59.000Z

96

A Case Study For Geothermal Exploration In The Ne German Basin- Integrated  

Open Energy Info (EERE)

Geothermal Exploration In The Ne German Basin- Integrated Geothermal Exploration In The Ne German Basin- Integrated Interpretation Of Seismic Tomography, Litho-Stratigraphy, Salt Tectonics, And Thermal Structure Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: A Case Study For Geothermal Exploration In The Ne German Basin- Integrated Interpretation Of Seismic Tomography, Litho-Stratigraphy, Salt Tectonics, And Thermal Structure Details Activities (0) Areas (0) Regions (0) Abstract: Unavailable Author(s): K. Bauer, I. Moeck, B. Norden, A. Schulze, M. H. Weber Published: Publisher Unknown, 2009 Document Number: Unavailable DOI: Unavailable Retrieved from "http://en.openei.org/w/index.php?title=A_Case_Study_For_Geothermal_Exploration_In_The_Ne_German_Basin-_Integrated_Interpretation_Of_Seismic_Tomography,_Litho-Stratigraphy,_Salt_Tectonics,_And_Thermal_Structure&oldid=390106"

97

EcoCAR: The NeXt Challenge | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

EcoCAR: The NeXt Challenge EcoCAR: The NeXt Challenge EcoCAR: The NeXt Challenge May 18, 2010 - 7:30am Addthis While most college students' experience with vehicles goes no further than the beater they picked up for a few thousand dollars, students participating in the EcoCAR: The NeXT Challenge competition get to experience the cutting-edge of driving technology. The competition, which was established by the U.S. Department of Energy and General Motors, is a three year advanced vehicle engineering contest. Yesterday, May 17, was the first day of their Year 2 judging sessions. In EcoCAR, students from 16 universities across North America are competing against each other to build the most environmentally sustainable and practical vehicle. This year's teams have adopted a number of advanced

98

Session S2H 978-1-61284-469-5/11/$26.00 2011 IEEE October 12 -15, 2011, Rapid City, SD  

E-Print Network (OSTI)

Session S2H 978-1-61284-469-5/11/$26.00 ©2011 IEEE October 12 - 15, 2011, Rapid City, SD 41st ASEE, the nature of atomic bonds, diffusion, the mechanical properties of metals, stress-strain curves, the effects

Heckler, Andrew F.

99

Category:International Falls, MN | Open Energy Information  

Open Energy Info (EERE)

MN MN Jump to: navigation, search Go Back to PV Economics By Location Media in category "International Falls, MN" The following 16 files are in this category, out of 16 total. SVFullServiceRestaurant International Falls MN Northern States Power Co (Minnesota) Excel Energy.png SVFullServiceRestauran... 88 KB SVHospital International Falls MN Northern States Power Co (Minnesota) Excel Energy.png SVHospital Internation... 84 KB SVLargeHotel International Falls MN Northern States Power Co (Minnesota) Excel Energy.png SVLargeHotel Internati... 85 KB SVLargeOffice International Falls MN Northern States Power Co (Minnesota) Excel Energy.png SVLargeOffice Internat... 83 KB SVMediumOffice International Falls MN Northern States Power Co (Minnesota) Excel Energy.png

100

Magnetoelastic Coupling in NiMnGa Ferromagnetic Shape ...  

Science Conference Proceedings (OSTI)

... Magnetoelastic Coupling in NiMnGa Ferromagnetic Shape Memory Alloys. Peng Zhao (Dept. of Materials Science and ...

Note: This page contains sample records for the topic "ne sd mn" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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101

First Principles Calculation for Magnetic Properties of Mn Alloys  

Science Conference Proceedings (OSTI)

The results indicate that the ? of MnAl and MnAlGe are extremely small because of ... Alloy Design and Powder Processing of Mn-Al Based Materials for Rare Earth ... Device Arrays Using Self-limiting Low-energy Glow-discharge Processing.

102

Electrochemical Performances of LiMnPO4 Synthesized from Non-Stoichiometric Li/Mn Ratio  

Science Conference Proceedings (OSTI)

In this paper we report the influences of the initial lithium content on the structural, electrochemical and magnetic properties of nonstoichiometric LixMnPO4 (0.5?x?1.2) nano-particles. It has been revealed Mn2P2O7 is the main impurity when Li1.0. The different functions of Mn2P2O7 and Li3PO4 impurities in the non-stoichiometric compounds have been investigated systematically. At a slow rate of C/50 the reversible capacity of both Li0.5MnPO4 and Li0.8MnPO4 increases with cycling indicating a gradual activation of more sites to accommodate a reversible diffusion of Li+ ions which may be related to the interaction between Mn2P2O7 and LiMnPO4 nanoparticles. Among all the different compositions, Li1.1MnPO4 exhibits the most stable cycling ability probably due to the existence of a trace amount of Li3PO4 impurity which functions as a solid state electrolyte on the surface. The magnetic properties and X-ray absorption spectroscopy (XAS) of MnPO4?H2O precursor, pure and carbon coated LiMnPO4 and all the other non-stoichiometric LixMnPO4 are also investigated to identify the key steps to prepare a high performance LiMnPO4.

Xiao, Jie; Chernova, Natalya; Upreti, Shailesh; Chen, Xilin; Li, Zheng; Deng, Zhiqun; Choi, Daiwon; Xu, Wu; Nie, Zimin; Graff, Gordon L.; Liu, Jun; Whittingham, M. S.; Zhang, Jiguang

2011-09-12T23:59:59.000Z

103

Towards a study of the {sup 22}Ne(p,{gamma}){sup 23}Na reaction at LUNA  

SciTech Connect

The {sup 22}Ne(p,{gamma}){sup 23}Na reaction is a part of the hydrogen burning NeNa cycle. In second-generation stars hydrogen burning may proceed via this cycle. The rate of the {sup 22}Ne(p,{gamma}){sup 23}Na reaction depends on the strength of several resonances in the energy range of the LUNA 400 kV accelerator which have never been observed in direct experiments. A related study is under preparation at LUNA.

Cavanna, Francesca; Depalo, Rosanna; Menzel, Marie-Luise [Dipartimento di fisica, Universita di Genova, and INFN Sezione di Genova, Genova (Italy); Dipartimento di fisica, Universita di Padova, and INFN Sezione di Padova, Padova (Italy); Helmholtz Zentrum Dresden-Rossendorf, Dresden (Germany); Collaboration: LUNA Collaboration

2012-11-20T23:59:59.000Z

104

Analysis of ISO NE Balancing Requirements: Uncertainty-based Secure Ranges for ISO New England Dynamic Inerchange Adjustments  

SciTech Connect

The document describes detailed uncertainty quantification (UQ) methodology developed by PNNL to estimate secure ranges of potential dynamic intra-hour interchange adjustments in the ISO-NE system and provides description of the dynamic interchange adjustment (DINA) tool developed under the same contract. The overall system ramping up and down capability, spinning reserve requirements, interchange schedules, load variations and uncertainties from various sources that are relevant to the ISO-NE system are incorporated into the methodology and the tool. The DINA tool has been tested by PNNL and ISO-NE staff engineers using ISO-NE data.

Etingov, Pavel V.; Makarov, Yuri V.; Wu, Di; Hou, Zhangshuan; Sun, Yannan; Maslennikov, S.; Luo, X.; Zheng, T.; George, S.; Knowland, T.; Litvinov, E.; Weaver, S.; Sanchez, E.

2013-01-31T23:59:59.000Z

105

Microsoft PowerPoint - Freeze.NE PA Overview_052511.ppt  

NLE Websites -- All DOE Office Websites (Extended Search)

Used Fuel Disposition Campaign Used Fuel Disposition Campaign Summary of DOE-NE PA Modeling for Storage and Disposal of Used Nuclear Fuel (UNF), High-Level Radioactive Waste (HLW), and Low-Level Waste (LLW) Geoff Freeze Sandia National Laboratories PA Community of Practice Technical Exchange May 25-26, 2011 Print Close Used Fuel Disposition 2 DOE-Nuclear Energy (NE) - PA Modeling Activities NE Advanced Modeling and Simulation (NEAMS) Waste Integrated Performance and Safety Codes (Waste IPSC) Used Fuel Disposition (UFD) Generic Performance Assessment Model (GPAM) *** Initial modeling focus in both campaigns in on UNF/HLW disposal Print Close Used Fuel Disposition 3  UFD GPAM  Short time horizon (2-3 yrs) - Simplified generic system models (i.e., PA-fidelity using GoldSim) - Current computing capabilities

106

Skåne County, Sweden: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Skåne County, Sweden: Energy Resources Skåne County, Sweden: Energy Resources Jump to: navigation, search Name Skåne County, Sweden Equivalent URI DBpedia GeoNames ID 3337385 Coordinates 55.98333°, 13.5° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":55.98333,"lon":13.5,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

107

DOE-NE Light Water Reactor Sustainability Program and EPRI Long-Term  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DOE-NE Light Water Reactor Sustainability Program and EPRI DOE-NE Light Water Reactor Sustainability Program and EPRI Long-Term Operations Program - Joint Research and Development Plan DOE-NE Light Water Reactor Sustainability Program and EPRI Long-Term Operations Program - Joint Research and Development Plan Nuclear power has contributed almost 20% of the total amount of electricity generated in the United States over the past two decades. High capacity factors and low operating costs make nuclear power plants (NPPs) some of the most economical power generators available. Further, nuclear power remains the single largest contributor (nearly 70%) of non-greenhouse gas-emitting electric power generation in the United States. Even when major refurbishments are performed to extend operating life, these plants continue to represent cost-effective, low-carbon assets to the nation's

108

DOE-NE Light Water Reactor Sustainability Program and EPRI Long-Term  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DOE-NE Light Water Reactor Sustainability Program and EPRI DOE-NE Light Water Reactor Sustainability Program and EPRI Long-Term Operations Program - Joint Research and Development Plan DOE-NE Light Water Reactor Sustainability Program and EPRI Long-Term Operations Program - Joint Research and Development Plan Nuclear power has contributed almost 20% of the total amount of electricity generated in the United States over the past two decades. High capacity factors and low operating costs make nuclear power plants (NPPs) some of the most economical power generators available. Further, nuclear power remains the single largest contributor (nearly 70%) of non-greenhouse gas-emitting electric power generation in the United States. Even when major refurbishments are performed to extend operating life, these plants continue to represent cost-effective, low-carbon assets to the nation's

109

ARM - Field Campaign - 1996 NARSTO Northeast Field Study (NARSTO-NE)  

NLE Websites -- All DOE Office Websites (Extended Search)

6 NARSTO Northeast Field Study (NARSTO-NE) 6 NARSTO Northeast Field Study (NARSTO-NE) Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : 1996 NARSTO Northeast Field Study (NARSTO-NE) 1996.07.01 - 1996.07.28 Lead Scientist : Larry Kleinman For data sets, see below. Description The DOE G-1 aircraft was deployed in the New York City metropolitan area as part of the North American Research Strategy for Tropospheric Ozone-Northeast effort to determine the causes of elevated ozone levels in the northeastern United States. Measurements of ozone, ozone precursors, and other photochemically active trace gases were made upwind and downwind of New York City with the objective of characterizing the ozone formation process and its dependence on ambient levels of NOx and volatile organic

110

Charged-Current Neutral Pion production at SciBooNE  

SciTech Connect

SciBooNE, located in the Booster Neutrino Beam at Fermilab, collected data from June 2007 to August 2008 to accurately measure muon neutrino and anti-neutrino cross sections on carbon below 1 GeV neutrino energy. SciBooNE is studying charged current interactions. Among them, neutral pion production interactions will be the focus of this poster. The experimental signature of neutrino-induced neutral pion production is constituted by two electromagnetic cascades initiated by the conversion of the {pi}{sup 0} decay photons, with an additional muon in the final state for CC processes. In this poster, I will present how we reconstruct and select charged-current muon neutrino interactions producing {pi}{sup 0}'s in SciBooNE.

Catala-Perez, J.; /Valencia U., IFIC

2009-10-01T23:59:59.000Z

111

First Direct Measurement of the {sup 17}F(p,{gamma}){sup 18}Ne Cross Section  

SciTech Connect

The rate of the {sup 17}F(p,{gamma}){sup 18}Ne reaction is important in various astrophysical events. A previous {sup 17}F(p,p){sup 17}F measurement identified a 3{sup +} state providing the strongest resonance contribution, but the resonance strength was unknown. We have directly measured the {sup 17}F(p,{gamma}){sup 18}Ne reaction using a mixed beam of {sup 17}F and {sup 17}O at ORNL. The resonance strength for the 3{sup +} resonance in {sup 18}Ne was found to be {omega}{gamma}=33{+-}14(stat){+-}17(syst) meV, corresponding to a {gamma} width of {gamma}{sub {gamma}}=56{+-}24(stat){+-}30(syst) meV. An upper limit on the direct capture of S(E){<=}65 keV b was determined at an energy of 800 keV.

Chipps, K. A.; Greife, U. [Colorado School of Mines, Golden, Colorado 80401 (United States); Bardayan, D. W.; Smith, M. S. [Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States); Blackmon, J. C. [Louisiana State University, Baton Rouge, Louisiana 70803 (United States); Chae, K. Y.; Moazen, B. H.; Pittman, S. T. [University of Tennessee, Knoxville, Tennessee 37996 (United States); Hatarik, R.; Peters, W. A. [Rutgers University, New Brunswick, New Jersey 08901 (United States); Kozub, R. L.; Shriner, J. F. Jr. [Tennessee Technological University, Cookeville, Tennessee 38505 (United States); Matei, C. [Oak Ridge Associated Universities, Oak Ridge, Tennessee 37830 (United States); Nesaraja, C. D.; Pain, S. D. [Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States); University of Tennessee, Knoxville, Tennessee 37996 (United States)

2009-04-17T23:59:59.000Z

112

Low-temperature magnetization of (Ga,Mn) As semiconductors  

E-Print Network (OSTI)

We report on a comprehensive study of the ferromagnetic moment per Mn atom in (Ga,Mn)As ferromagnetic semiconductors. Theoretical discussion is based on microscopic calculations and on an effective model of Mn local moments antiferromagnetically coupled to valence band hole spins. The validity of the effective model over the range of doping studied is assessed by comparing with microscopic tight-binding/coherent-potential approximation calculations. Using the virtual crystal k center dot p model for hole states, we evaluate the zero-temperature mean-field contributions to the magnetization from the hole kinetic and exchange energies, and magnetization suppression due to quantum fluctuations of Mn moment orientations around their mean-field ground state values. Experimental low-temperature ferromagnetic moments per Mn are obtained by superconducting quantum interference device and x-ray magnetic circular dichroism measurements in a series of (Ga,Mn)As semiconductors with nominal Mn doping ranging from similar to 2 to 8%. Hall measurements in as-grown and annealed samples are used to estimate the number of uncompensated substitutional Mn moments. Based on our comparison between experiment and theory we conclude that all these Mn moments in high quality (Ga,Mn)As materials have nearly parallel ground state alignment.

Jungwirth, T.; Masek, J.; Wang, KY; Edmonds, KW; Sawicki, M.; Polini, M.; Sinova, Jairo; MacDonald, AH; Campion, RP; Zhao, LX; Farley, NRS; Johal, TK; van der Laan, G.; Foxon, CT; Gallagher, BL.

2006-01-01T23:59:59.000Z

113

N NE EX XT T G GE EN NE ER RA AT TI IO ON N S SA AF FE EG  

NLE Websites -- All DOE Office Websites (Extended Search)

NE NE EX XT T G GE EN NE ER RA AT TI IO ON N S SA AF FE EG GU UA AR RD DS S I IN NI IT TI IA AT TI IV VE E ( (N NG GS SI I) ) O OP PP PO OR RT TU UN NI IT TI IE ES S F FO OR R S ST TU UD DE EN NT TS S A AN ND D Y YO OU UN NG G P PR RO OF FE ES SS SI IO ON NA AL LS S I IN NT TE ER RE ES ST TE ED D I IN N S SA AF FE EG GU UA AR RD DS S/ /N NO ON NP PR RO OL LI IF FE ER RA AT TI IO ON N The Next Generation Safeguards Initiative (NGSI) was launched by the National Nuclear Security Administration (NNSA) in FY 2008 to develop the policies, concepts, technologies, expertise, and infrastructure necessary to strengthen and sustain the international safeguards system as it evolves to meet new challenges over the next 25 years. NGSI's Human Capital Development subprogram 1 aims to revitalize and expand the international safeguards human capital base in the United States by attracting, educating, training, and retaining

114

MiniBooNE as related to Windows on the Universe  

SciTech Connect

The measurement of absolute neutrino and anti-neutrino cross-sections, the observation of a 'low energy anomaly' in the neutrino sector, the constraints placed on the LSND effect by a non-observation of neutrino oscillations, the search for neutrino and anti-neutrino appearance, and for the possible existence of new heavy particles makes MiniBooNE a major contributor to the current view of the Universe. This paper addresses specific model constraints set by the MiniBooNE data, and explores expectations for further remaining analysis of the data.

Stefanski, Ray; /Fermilab

2009-12-01T23:59:59.000Z

115

Microstructural Characterization of Fe-Mn-C Ternary Alloy under ...  

Science Conference Proceedings (OSTI)

Mercury Oxidation and Capture over SCR Catalysts in Simulated Coal Combustion Flue Gas Microstructural Characterization of Fe-Mn-C Ternary Alloy under...

116

Electrochemical Performance of LiFeMnPO4  

Science Conference Proceedings (OSTI)

Symposium, Energy Storage: Materials, Systems, and Applications. Presentation Title, Electrochemical Performance of LiFeMnPO4: A Comparison of Synthesis...

117

Microstructure and Coercivity of Nitrided Mn-Sn Based Alloy  

Science Conference Proceedings (OSTI)

Alloy Design and Powder Processing of Mn-Al Based Materials for Rare Earth ... Enhancement of the Refrigerant Capacity in Partially Crystallized Gd-Fe-Al-B...

118

,"Warroad, MN Natural Gas Pipeline Exports to Canada (Million...  

U.S. Energy Information Administration (EIA) Indexed Site

Of Series","Frequency","Latest Data for" ,"Data 1","Warroad, MN Natural Gas Pipeline Exports to Canada (Million Cubic Feet)",1,"Annual",2003 ,"Release Date:","172014"...

119

,"Warroad, MN Natural Gas Pipeline Imports From Canada (MMcf...  

U.S. Energy Information Administration (EIA) Indexed Site

Of Series","Frequency","Latest Data for" ,"Data 1","Warroad, MN Natural Gas Pipeline Imports From Canada (MMcf)",1,"Annual",2012 ,"Release Date:","172014" ,"Next...

120

,"International Falls, MN Natural Gas Pipeline Imports From Canada...  

U.S. Energy Information Administration (EIA) Indexed Site

International Falls, MN Natural Gas Pipeline Imports From Canada (MMcf)" ,"Click worksheet name or tab at bottom for data" ,"Worksheet Name","Description"," Of...

Note: This page contains sample records for the topic "ne sd mn" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

,"Noyes, MN Natural Gas Pipeline Imports From Canada (MMcf)"  

U.S. Energy Information Administration (EIA) Indexed Site

Of Series","Frequency","Latest Data for" ,"Data 1","Noyes, MN Natural Gas Pipeline Imports From Canada (MMcf)",1,"Annual",2012 ,"Release Date:","172014" ,"Next...

122

Characterization of Mn-Co Electrodeposition for SOFC Interconnect ...  

Science Conference Proceedings (OSTI)

Presentation Title, Characterization of Mn-Co Electrodeposition for SOFC Interconnect Applications by QCM. Author(s), Junwei Wu, Ayyakkannu Manivannan,...

123

Electrodeposited Mn-Co Alloy Coating For SOFC Interconnects  

Science Conference Proceedings (OSTI)

Presentation Title, Electrodeposited Mn-Co Alloy Coating For SOFC Interconnects. Author(s), Heather McCrabb, Tim Hall, Junwei Wu, Hui Zhang, Xingbo Liu,...

124

36 SEPTEMBER | 2012 WiNd TURbiNE CAPACiTY  

E-Print Network (OSTI)

36 SEPTEMBER | 2012 WiNd TURbiNE CAPACiTY FRONTiER FROM SCAdA ThE WORld hAS SEEN A significant contributor to this growth. The wind turbine generated energy depends on the wind potential and the turbine of wind turbines. Supervi- sory control and data acquisition (SCADA) systems record wind turbine

Kusiak, Andrew

125

Charged current single pion cross section measurement at MiniBooNE  

SciTech Connect

We present MiniBooNE's preliminary {nu}{sub {mu}} CC1{pi}{sup +} cross section measurement, calculated using the ratio of CC1{pi}{sup +} to CCQE events. We find the inclusive CC1{pi}{sup +} measurement to be below the nuance [1] and NEUGEN [2] expectations.

Wascko, M.O.; /Louisiana State U.

2006-02-01T23:59:59.000Z

126

A generic network interface architecture for a networked processor array (NePA)  

Science Conference Proceedings (OSTI)

Recently Network-on-Chip (NoC) technique has been proposed as a promising solution for on-chip interconnection network. However, different interface specification of integrated components raises a considerable difficulty for adopting NoC techniques. ... Keywords: interconnection network, multiprocessor systemon-chip (MPSoC), network interface, network-on-chip (NoC), networked processor array (NePA)

Seung Eun Lee; Jun Ho Bahn; Yoon Seok Yang; Nader Bagherzadeh

2008-02-01T23:59:59.000Z

127

THERMALIZATION OF THE ION KINETIC ENERGY IN A Ne GAS PUFF PINCH MODEL*  

E-Print Network (OSTI)

THERMALIZATION OF THE ION KINETIC ENERGY IN A Ne GAS PUFF PINCH MODEL* J. L. Giuliani, J. W Department of Energy/NNSA, Washington DC USA Full understanding of the dynamics, population kinetics, and energy budget of a K-shell radiating Z-pinch remains a challenging problem in high energy density plasma

128

Km3NeT, a Deep Sea Challenge for Neutrino Astronomy  

Science Conference Proceedings (OSTI)

The groups presently pursuing neutrino telescope projects in the Mediterranean Sea; ANTARES, NEMO, and NESTOR, have formed the new KM3NeT consortium to study the construction of a cubic kilometre-scale neutrino telescope for the Northern hemisphere. ...

Ciro Bigongiari

2007-10-01T23:59:59.000Z

129

Nonuniformity of CBF response to NE-or ANG II-induced hypertension in rabbits  

SciTech Connect

The regional response of brain vasculature to moderate hypertension was investigated using two hypertensive drugs, norepinephrine (NE) and angiotensin II (ANG II), infused intravenously at low concentrations (increase in blood pressure 15-40 mmHg). Regional cerebral blood flow (rCBF) was measured in unanesthetized and anesthetized rabbits using the (/sup 14/C)ethanol saturation technique. (1) In both groups of animals, NE and ANG II induced regional differences in the flow changes as compared with controls, confirming a regional (or segmental) heterogeneity in the regulatory mechanisms to hypertension. (2) The responses to identical rises in blood pressure (BP) in most of the structures analyzed depended on the drug used. In the unanesthetized rabbits, the increase in vascular resistance induced by NE was greater than that induced by ANG II. (3) With the two drugs, there was no correlation between the flow changes in any of the structures considered and either the BP increase or the BP level in unanesthetized animals. However, these flow changes were correlated with the BP increase in anesthetized animals, although differences between the effects of NE and ANG II were again observed. This study suggests that cerebrovascular regulatory mechanisms in hypertension are probably more complex than a simple myogenic reaction. Their heterogeneity and their dependence both on the cause of hypertension and on the presence of anesthetics suggest the intervention of an integrating pathway.

Reynier-Rebuffel, A.M.; Aubineau, P.; Issertial, O.; Seylaz, J.

1987-07-01T23:59:59.000Z

130

NE-Rank: A Novel Graph-Based Keyphrase Extraction in Twitter  

Science Conference Proceedings (OSTI)

The massive growth of the micro-blogging service Twitter has shed the light on the challenging problem of summarizing a collection of large number of tweets. This paper attempts to extract topical key phrases that would represent topics in tweets. Due ... Keywords: Keyphrase Extraction, Graph-based Ranking, Hashtag, Twitter, PageRank, TextRank, NE-Rank

Abdelghani Bellaachia; Mohammed Al-Dhelaan

2012-12-01T23:59:59.000Z

131

Zwischenbericht zum DFG-Forschungsvorhaben NE 902/2-1 SCHR 570/6-1  

E-Print Network (OSTI)

.3 Anwendungsperspektiven. . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4 Arbeits- und Ergebnisbericht 10 4.3 Wissenschaftliche Mitarbeiter/in Dipl.-Ing. Vera Ebbing Besch¨aftigungszeitraum: seit 1. Oktober 2006 1.4 Fachgebiet;Zwischenbericht zum DFG-Forschungsvorhaben NE 902/2-1 SCHR 570/6-1 10 4 Arbeits- und Ergebnisbericht Basierend auf

Neff, Patrizio

132

References for HNF-SD-WM-TRD-007, ``System specification for the double-shell tank system: HNF-PROs, CFRs, DOE Orders, WACs``  

SciTech Connect

HNF-SD-WM-TRD-O07, System Specification for the Double-Shell Tank System, (hereafter referred to as DST Specification), defines the requirements of the double-shell tank system at the Hanford Site for Phase 1 privatization. Many of the sections in this document reference other documents for design guidance and requirements. Referenced documents include Project Hanford Management Contract (PHMC) procedures (HNF-PROS), Codes of Federal Regulation (CFRs), DOE Orders, and Washington Administrative Codes (WACs). This document provides rationale for the selection and inclusion of HNF-PROS, CFRs, DOE Orders and WACs.

Shaw, C.P.

1998-07-30T23:59:59.000Z

133

Ni(II) Sorption on Biogenic Mn-Oxides with Varying Mn  

E-Print Network (OSTI)

Lightsource (SSRL), Menlo Park, CA. EXAFS spectra from Ni(II) organic standards were collected in transmission-3 at SSRL. This method is described in detail in Zhu et al. (6). Results Sorption Isotherms and Dissolved Mn,anationaluserfacilityoperatedbyStanfordUniversity on behalf of the U.S. Department of Energy, Office of Basic Energy Sciences. The SSRL Structural Molecular

Sparks, Donald L.

134

C:\\ANNUAL\\VENTCHAP.V8\\NGA.VP  

Gasoline and Diesel Fuel Update (EIA)

4 NJ WY AK AL CA AR CO CT DE FL GA HI ID KS IL IN IA IA KY LA ME MI MA MD MN MS MT MO NE ND OH NV NM NY NH NC OK OR PA RI SC SD TN TX UT VT WA WV WI AZ VA DC 0.00-1.99 2.00-2.99...

135

C:\\ANNUAL\\VENTCHAP.V8\\NGAla1109.vp  

Gasoline and Diesel Fuel Update (EIA)

0 NJ WY AK AL CA AR CO CT DE FL GA HI ID KS IL IN IA IA KY LA ME MI MA MD MN MS MT MO NE ND OH NV NM NY NH NC OK OR PA RI SC SD TN TX UT VT WA WV WI AZ VA DC Sources: Energy...

136

NGA98fin5.vp  

Annual Energy Outlook 2012 (EIA)

NJ WY AK AL CA AR CO CT DE FL GA HI ID KS IL IN IA IA KY LA ME MI MA MD MN MS MT MO NE ND OH NV NM NY NH NC OK OR PA RI SC SD TN TX UT VT WA WV WI AZ VA DC 0.00-1.99 2.00-2.99...

137

U.S. Energy Information Administration | Annual Energy Outlook...  

Annual Energy Outlook 2012 (EIA)

3 Regional maps Figure F6. Coal supply regions WA ID OR CA NV UT TX OK AR MO LA MS AL GA FL TN SC NC KY VA WV WY CO SD ND MI MN WI IL IN OH MD PA NJ DE CT MA NH VT NY ME RI MT NE...

138

High-Resolution Structure of the Photosynthetic Mn4Ca Catalyst from X-ray Spectroscopy  

E-Print Network (OSTI)

the Photosynthetic Mn 4 Ca Catalyst from X-ray Spectroscopystructure of the Mn 4 Ca catalyst at high-resolution whichthe structure of Mn 4 Ca catalyst as it cycles through the

Yano, Junko

2008-01-01T23:59:59.000Z

139

MN471018, Work Planning and Control Manual  

NLE Websites -- All DOE Office Websites (Extended Search)

18, Work Planning and Control Manual 18, Work Planning and Control Manual Sponsor: Michael W. Hazen, 4000 Issue Date: January 3, 2007 Revision Date: June 1, 2009 This document is no longer a CPR. This document implements the requirements of Corporate procedure ESH100.1.WPC.1, Plan and Control Work. IMPORTANT NOTICE: A printed copy of this document may not be the document currently in effect. The official version is the online version located on the Sandia Restricted Network (SRN) MN471018 - WORK PLANNING AND CONTROL MANUAL Subject Matter Expert: Brad Elkin; CA Counterpart: Aden Jackson MN471018 Revision Date: June 1, 2009; Replaces Document: October 28, 2008 Implementation Notice: The requirements outlined in this document must be incorporated into approved comprehensive organizational procedures on or before June 30, 2009. New work planned and conducted after June 30, 2009 shall be performed in accordance with this document. Ongoing work, conducted under an existing, current, and approved PHS and TWD (if required), is authorized until the expiration of the applicable PHS, TWD, or June 30, 2010.

140

Searches for New Physics at MiniBooNE: Sterile Neutrinos and Mixing Freedom  

SciTech Connect

The MiniBooNE experiment was designed to perform a search for {nu}{sub {mu}} {yields} {nu}{sub e} oscillations in a region of {Delta}m{sup 2} and sin{sup 2} 2{theta} very different from that allowed by standard, three-neutrino oscillations, as determined by solar and atmospheric neutrino experiments. This search was motivated by the LSND experimental observation of an excess of {bar {nu}}{sub e} events in a {bar {nu}}{sub {mu}} beam which was found compatible with two-neutrino oscillations at {Delta}m{sup 2} {approx} 1 eV{sup 2} and sin{sup 2} 2{theta} < 1%. If confirmed, such oscillation signature could be attributed to the existence of a light, mostly-sterile neutrino, containing small admixtures of weak neutrino eigenstates. In addition to a search for {nu}{sub {mu}} {yields} {nu}{sub e} oscillations, MiniBooNE has also performed a search for {bar {nu}}{sub {mu}} {yields} {bar {nu}}{sub e} oscillations, which provides a test of the LSND two-neutrino oscillation interpretation that is independent of CP or CPT violation assumptions. This dissertation presents the MiniBooNE {nu}{sub {mu}} {yields} {nu}{sub e} and {bar {nu}}{sub {mu}} {yields} {bar {nu}}{sub e} analyses and results, with emphasis on the latter. While the neutrino search excludes the two-neutrino oscillation interpretation of LSND at 98% C.L., the antineutrino search shows an excess of events which is in agreement with the two-neutrino {bar {nu}}{sub {mu}} {yields} {bar {nu}}{sub e} oscillation interpretation of LSND, and excludes the no oscillations hypothesis at 96% C.L. Even though the neutrino and antineutrino oscillation results from MiniBooNE disagree under the single sterile neutrino oscillation hypothesis, a simple extension to the model to include additional sterile neutrino states and the possibility of CP violation allows for differences between neutrino and antineutrino oscillation signatures. In view of that, the viability of oscillation models with one or two sterile neutrinos is investigated in global fits to MiniBooNE and LSND data, with and without constraints from other oscillation experiments with similar sensitivities to those models. A general search for new physics scenarios which would lead to effective non-unitarity of the standard 3 x 3 neutrino mixing matrix, or mixing freedom, is also performed using neutrino and antineutrino data available from MiniBooNE.

Karagiorgi, Georgia S.; /MIT

2010-07-01T23:59:59.000Z

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141

Strategic Plan for Nuclear Energy -- Knowledge Base for Advanced Modeling and Simulation (NE-KAMS)  

SciTech Connect

The Nuclear Energy Computational Fluid Dynamics Advanced Modeling and Simulation (NE-CAMS) system is being developed at the Idaho National Laboratory (INL) in collaboration with Bettis Laboratory, Sandia National Laboratory (SNL), Argonne National Laboratory (ANL), Utah State University (USU), and other interested parties with the objective of developing and implementing a comprehensive and readily accessible data and information management system for computational fluid dynamics (CFD) verification and validation (V&V) in support of nuclear energy systems design and safety analysis. The two key objectives of the NE-CAMS effort are to identify, collect, assess, store and maintain high resolution and high quality experimental data and related expert knowledge (metadata) for use in CFD V&V assessments specific to the nuclear energy field and to establish a working relationship with the U.S. Nuclear Regulatory Commission (NRC) to develop a CFD V&V database, including benchmark cases, that addresses and supports the associated NRC regulations and policies on the use of CFD analysis. In particular, the NE-CAMS system will support the Department of Energy Office of Nuclear Energy Advanced Modeling and Simulation (NEAMS) Program, which aims to develop and deploy advanced modeling and simulation methods and computational tools for reliable numerical simulation of nuclear reactor systems for design and safety analysis. Primary NE-CAMS Elements There are four primary elements of the NE-CAMS knowledge base designed to support computer modeling and simulation in the nuclear energy arena as listed below. Element 1. The database will contain experimental data that can be used for CFD validation that is relevant to nuclear reactor and plant processes, particularly those important to the nuclear industry and the NRC. Element 2. Qualification standards for data evaluation and classification will be incorporated and applied such that validation data sets will result in well-defined, well-characterized data. Element 3. Standards will be established for the design and operation of experiments for the generation of new validation data sets that are to be submitted to NE-CAMS that addresses the completeness and characterization of the dataset. Element 4. Standards will be developed for performing verification and validation (V&V) to establish confidence levels in CFD analyses of nuclear reactor processes; such processes will be acceptable and recognized by both CFD experts and the NRC.

Kimberlyn C. Mousseau

2011-10-01T23:59:59.000Z

142

Improvements to the on-line mass separator, RAMA, and the beta-delayed charged-particle emission of proton-rich sd shell nuclei  

SciTech Connect

To overcome the extreme difficulties encountered in the experimental decay studies of proton drip line nuclei, several techniques have been utilized, including a helium-jet transport system, particle identification detectors and mass separation. Improvements to the ion source/extraction region of the He-jet coupled on-line Recoil Atom Mass Analyzer (RAMA) and its target/ion source coupling resulted in significant increases in RAMA efficiencies and its mass resolution, as well as reductions in the overall transit time. At the 88-Inch Cyclotron at LBNL, the decays of {sup 31}Cl, {sup 27}P and {sup 28}P, with half-lives of 150 msec, 260 msec and 270.3 msec, respectively, were examined using a he-jet and low-energy gas {Delta}E-gas {Delta}E-silicon E detector telescopes. Total beta-delayed proton branches of 0.3% and 0.07% in {sup 31}Cl and {sub 27}P, respectively, were estimated. Several proton peaks that had been previously assigned to the decay of {sup 31}Cl were shown to be from the decay of {sup 25}Si. In {sup 27}P, two proton groups at 459 {+-} 14 keV and 610 {+-} 11 keV, with intensities of 7 {+-} 3% and 92 {+-} 4% relative to the main (100%) group were discovered. The Gamow-Teller component of the preceding beta-decay of each observed proton transition was compared to results from shell model calculations. Finally, a new proton transition was identified, following the {beta}-decay of {sup 28}P, at 1,444 {+-} 12 keV with a 1.7 {+-} 0.5% relative intensity to the 100% group. Using similar low-energy detector telescopes and the mass separator TISOL at TRIUMF, the 109 msec and 173 msec activities, {sup 17}Ne and {sup 33}Ar, were studied. A new proton group with energy 729 {+-} 15 keV was observed following the beta-decay of {sup 17}Ne. Several discrepancies between earlier works as to the energies, intensities and assignments of several proton transitions from {sup 17}Ne and {sup 33}Ar were resolved.

Ognibene, T.J. [Lawrence Berkeley National Lab., CA (United States). Nuclear Science Div.

1996-03-01T23:59:59.000Z

143

Electronic structure and magnetism in BaMn2As2 and BaMn2Sb2  

Science Conference Proceedings (OSTI)

We study the properties of ThCr{sub 2}Si{sub 2} structure BaMn{sub 2}As{sub 2} and BaMn{sub 2}Sb{sub 2} using density functional calculations of the electronic and magnetic properties as well as experimental measurements on single crystal samples of BaMn{sub 2}As{sub 2}. These materials are local moment magnets with moderate band gap antiferromagnetic semiconducting ground states. The electronic structures show substantial Mn-pnictogen hybridization, which stabilizes an intermediate spin configuration for the nominally d{sup 5} Mn. The results are discussed in the context of possible thermoelectric applications and the relationship with the corresponding iron/cobalt/nickel compounds Ba(Fe,Co,Ni){sub 2}As{sub 2}.

An, Jiming [ORNL; Safa-Sefat, Athena [ORNL; Singh, David J [ORNL; Du, Mao-Hua [ORNL

2009-01-01T23:59:59.000Z

144

ANL/NE-13/9 SHARP Assembly-Scale Multiphysics Demonstration  

NLE Websites -- All DOE Office Websites (Extended Search)

NE-13/9 NE-13/9 SHARP Assembly-Scale Multiphysics Demonstration Simulations Mathematics and Computation Division & Nuclear Engineering Division About Argonne National Laboratory Argonne is a U.S. Department of Energy laboratory managed by UChicago Argonne, LLC under contract DE-AC02-06CH11357. The Laboratory's main facility is outside Chicago, at 9700 South Cass Avenue, Argonne, Illinois 60439. For information about Argonne and its pioneering science and technology programs, see www.anl.gov. Availability of This Report This report is available, at no cost, at http://www.osti.gov/bridge. It is also available on paper to the U.S. Department of Energy and its contractors, for a processing fee, from: U.S. Department of Energy Office of Scientific and Technical Information

145

Ronald E. Gill (NE), Scoville, ID - Level I Curtis Roth (EM), Idaho  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

E. Gill (NE), E. Gill (NE), Scoville, ID - Level I Curtis Roth (EM), Idaho Falls, ID - Level I Jared T. Howerton (NNSA), Oak Ridge, TN - Level I Richard L. Person (NNSA), DOE HQ - Level I Phillip (Tony) A. Polk (EM), Aiken, SC (Savannah River) - Level IV Jane Powell-Dolan (LM), Cincinnati, OH - Level I Eric M. Thompson (NNSA), Oak Ridge, TN - Level II Congratulations to our newly certified FPDs! The Certification Review Board (CRB or 'the Board') convened on Friday, Sep- tember 24 to review certifi- cation candidates and dis- cuss several topics. The Department of Energy (DOE) met the FY2010 tar- gets for the Root Cause Analysis, Corrective Action Plan metrics 7 and 8, as fol- lows: DOE surpassed the target for Metric #7 (95% of pro-

146

DOE-NE-STD-1004-92; Root Cause Analysis Guidance Document  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

NE-STD-1004-92 NE-STD-1004-92 DOE GUIDELINE ROOT CAUSE ANALYSIS GUIDANCE DOCUMENT February 1992 U.S. Department of Energy Office of Nuclear Energy Office of Nuclear Safety Policy and Standards Washington, D.C. 20585 ii ABSTRACT DOE Order 5000.3A, "Occurrence Reporting and Processing of Operations Information," investigation and reporting of occurrences (including the performance of root cause analysis) requires the and the selection, implementation, and follow-up of corrective actions. The level of effort expended should be based on the significance attached to the occurrence. Most off-normal occurrences need only a scaled- down effort while most emergency occurrences should be investigated using one or more of the formal analytical models. A discussion of methodologies, instructions, and worksheets in this document guides

147

File:USDA-CE-Production-GIFmaps-NE.pdf | Open Energy Information  

Open Energy Info (EERE)

NE.pdf NE.pdf Jump to: navigation, search File File history File usage Nebraska Ethanol Plant Locations Size of this preview: 776 × 600 pixels. Full resolution ‎(1,650 × 1,275 pixels, file size: 278 KB, MIME type: application/pdf) Description Nebraska Ethanol Plant Locations Sources United States Department of Agriculture Related Technologies Biomass, Biofuels, Ethanol Creation Date 2010-01-19 Extent State Countries United States UN Region Northern America States Nebraska External links http://www.nass.usda.gov/Charts_and_Maps/Ethanol_Plants/ File history Click on a date/time to view the file as it appeared at that time. Date/Time Thumbnail Dimensions User Comment current 16:18, 27 December 2010 Thumbnail for version as of 16:18, 27 December 2010 1,650 × 1,275 (278 KB) MapBot (Talk | contribs) Automated bot upload

148

NE-23 Disposal of Offsite-Generated Defense Radioactive Waste, Ventron  

Office of Legacy Management (LM)

pi/L +3 pi/L +3 *3L 52. NE-23 Disposal of Offsite-Generated Defense Radioactive Waste, Ventron FUSRAP Site Jill E. Lytle, DP-12 NE-23 The Office of Remedial Action and Waste Technology has received a request from the Technical Services Division, DOE-Oak Ridge Operations Office, for a determination of the appropriate disposal location for the material which will result from remedial action of the Ventron site in Beverly, Massachusetts. The Ventron site was used from 1942 to 1948 under contract to the ME0 and AEC for converting uranium oxide to uranium metal powder, as well as later operations involving recovery of uranium from scrap uranium and turnings from the fuel fabrication plant at Hanford, Washington. Full-scale remedial action, anticipated to result in approximately 5,000

149

Neutron Transfer Studied with a Radioactive beam of 24Ne, using TIARA at SPIRAL  

E-Print Network (OSTI)

A general experimental technique for high resolution studies of nucleon transfer reactions using radioactive beams is briefly described, together with the first new physics results that have been obtained with the new TIARA array. These first results from TIARA are for the reaction 24Ne(d,p)25Ne, studied in inverse kinematics with a pure radioactive beam of 100,000 pps from the SPIRAL facility at GANIL. The reaction probes the energies of neutron orbitals relevant to very neutron rich nuclei in this mass region and the results highlight the emergence of the N=16 magic number for neutrons and the associated disappearance of the N=20 neutron magic number for the very neutron rich neon isotopes.

W. N. Catford; C. N. Timis; R. C. Lemmon; M. Labiche; N. A. Orr; L. Caballero; R. Chapman; M. Chartier; M. Rejmund; H. Savajols; for the TIARA Collaboration

2009-12-20T23:59:59.000Z

150

A combined muon-neutrino and electron-neutrino oscillation search at MiniBooNE  

SciTech Connect

MiniBooNE seeks to corroborate or refute the unconfirmed oscillation result from the LSND experiment. If correct, the result implies that a new kind of massive neutrino, with no weak interactions, participates in neutrino oscillations. MiniBooNE searches for {nu}{sub {mu}} {yields} {nu}{sub e} oscillations with the Fermi National Accelerator Laboratory 8 GeV beam line, which produces a {nu}{sub {mu}} beam with an average energy of {approx} 0.8 GeV and an intrinsic {nu}{sub e} content of 0.4%. The neutrino detector is a 6.1 m radius sphere filled with CH{sub 2}, viewed by 1540 photo-multiplier tubes, and located 541 m downstream from the source. This work focuses on the estimation of systematic errors associated with the neutrino flux and neutrino interaction cross section predictions, and in particular, on constraining these uncertainties using in-situ MiniBooNE {nu}{sub {mu}} charged current quasielastic (CCQE) scattering data. A data set with {approx} 100,000 events is identified, with 91% CCQE purity. This data set is used to measure several parameters of the CCQE cross section: the axial mass, the Fermi momentum, the binding energy, and the functional dependence of the axial form factor on four-momentum transfer squared. Constraints on the {nu}{sub {mu}} and {nu}{sub e} fluxes are derived using the {nu}{sub {mu}} CCQE data set. A Monte Carlo study of a combined {nu}{sub {mu}} disappearance and {nu}{sub e} appearance oscillation fit is presented, which improves the {nu}{sub {mu}} {yields} {nu}{sub e} oscillation sensitivity of MiniBooNE with respect to a {nu}{sub e} appearance-only fit by 1.2-1.5{sigma}, depending on the value of {Delta}m{sup 2}.

Monroe, Jocelyn R.; /Columbia U.

2006-07-01T23:59:59.000Z

151

Constraints on electromagnetic properties of sterile neutrinos from MiniBooNE results  

E-Print Network (OSTI)

Among the class of models with small mixing angles between sterile and active neutrinos, we place constraints on the effective muon-to-sterile neutrino magnetic and electric dipole transition moments from the combined MiniBooNE results for the sterile neutrino mass range of $10\\;\\mathrm{MeV}distribution as a function of polar angle. However, good agreement with the anomalous event distribution in reconstructed energy can be achieved for some values of magnetic and electric moments.

Alexander Radionov

2013-03-19T23:59:59.000Z

152

Collapse and expansion in the bright-rimmed cloud SFO 11NE  

E-Print Network (OSTI)

We report the results of a search for the double-peaked blue-skewed infall signature in the bright-rimmed cloud core SFO 11NE SMM1. Observations of the optically thick HCO$^{+}$ and optically thin H$^{13}$CO$^{+}$ J=3--2 lines reveal that there is indeed a characteristic double-peaked line profile, but skewed to the red rather than the blue. Modelling of the dust continuum emission and line profiles show that the motions within SFO 11NE SMM1 are consistent with a collapsing central core surrounded by an expanding outer envelope. We show that the collapse is occurring at a similar rate to that expected onto a single solar-mass protostar and is unlikely to represent the large-scale collapse of gas onto the infrared cluster seen at the heart of SFO 11NE SMM1. The outer envelope is expanding at a much greater rate than that expected for a photoevaporated flow from the cloud surface. The modelled expansion is consistent with the bulk cloud re-expansion phase predicted by radiative-driven implosion models of cometary clouds.

M. A Thompson; G. J. White

2004-02-24T23:59:59.000Z

153

The Sound Emission Board of the KM3NeT Acoustic Positioning System  

E-Print Network (OSTI)

We describe the sound emission board proposed for installation in the acoustic positioning system of the future KM3NeT underwater neutrino telescope. The KM3NeT European consortium aims to build a multi-cubic kilometre underwater neutrino telescope in the deep Mediterranean Sea. In this kind of telescope the mechanical structures holding the optical sensors, which detect the Cherenkov radiation produced by muons emanating from neutrino interactions, are not completely rigid and can move up to dozens of meters in undersea currents. Knowledge of the position of the optical sensors to an accuracy of about 10 cm is needed for adequate muon track reconstruction. A positioning system based on the acoustic triangulation of sound transit time differences between fixed seabed emitters and receiving hydrophones attached to the kilometre-scale vertical flexible structures carrying the optical sensors is being developed. In this paper, we describe the sound emission board developed in the framework of KM3NeT project, whi...

Llorens, C D; Sogorb, T; Bou--Cabo, M; Martnez-Mora, J A; Larosa, G; Adrin-Martnez, S

2012-01-01T23:59:59.000Z

154

Study of intergranular embrittlement in Fe-12Mn alloys  

Science Conference Proceedings (OSTI)

A high resolution scanning Auger microscopic study has been performed on the intergranular fracture surfaces of Fe-12Mn steels in the as-austenitized condition. Fracture mode below the ductile-brittle transition temperature was intergranular whenever the alloy was quenched from the austenite field. The intergranular fracture surface failed to reveal any consistent segregation of P, S, As, O, or N. The occasional appearance of S or O on the fracture surface was found to be due to a low density precipitation of MnS and MnO/sub 2/ along the prior austenite boundaries. An AES study with Ar/sup +/ ion-sputtering showed no evidence of manganese enrichment along the prior austenite boundaries, but a slight segregation of carbon which does not appear to be implicated in the tendency toward intergranular fracture. Addition of 0.002% B with a 1000/sup 0/C/1h/WQ treatment yielded a high Charpy impact energy at liquid nitrogen temperature, preventing the intergranular fracture. High resolution AES studies showed that 3 at. % B on the prior austenite grain boundaries is most effective in increasing the grain boundary cohesive strength in an Fe-12Mn alloy. Trace additions of Mg, Zr, or V had negligible effects on the intergranular embrittlement. A 450/sup 0/C temper of the boron-modified alloys was found to cause tempered martensite embrittlement, leading to intergranular fracture. The embrittling treatment of the Fe-12Mn alloys with and without boron additions raised the ductile-brittle transition by 150/sup 0/C. This tempered martensite embrittlement was found to be due to the Mn enrichment of the fracture surface to 32 at. % Mn in the boron-modified alloy and 38 at. % Mn in the unmodified alloy. The Mn-enriched region along the prior austenite grain boundaries upon further tempering is believed to cause nucleation of austenite and to change the chemistry of the intergranular fracture surfaces. 61 figures.

Lee, H.J.

1982-06-01T23:59:59.000Z

155

OCTOBER 2011 CEC3002011009SD  

E-Print Network (OSTI)

.......................................................................................................................................... 17 Biogas..............................................................................................................................54 Biogas

156

Benthic biological and biogeochemical patterns and processes across an oxygen minimum zone (Pakistan margin, NE Arabian Sea)  

E-Print Network (OSTI)

(Pakistan margin, NE Arabian Sea) Gregory L. Cowie a,?, Lisa A. Levin b a The Sir John Murray Laboratories), and organic matter (OM) availability on benthic communities and processes across the Pakistan Margin

Levin, Lisa

157

Strategic Plan for Nuclear Energy -- Knowledge Base for Advanced Modeling and Simulation (NE-KAMS)  

SciTech Connect

NE-KAMS knowledge base will assist computational analysts, physics model developers, experimentalists, nuclear reactor designers, and federal regulators by: (1) Establishing accepted standards, requirements and best practices for V&V and UQ of computational models and simulations, (2) Establishing accepted standards and procedures for qualifying and classifying experimental and numerical benchmark data, (3) Providing readily accessible databases for nuclear energy related experimental and numerical benchmark data that can be used in V&V assessments and computational methods development, (4) Providing a searchable knowledge base of information, documents and data on V&V and UQ, and (5) Providing web-enabled applications, tools and utilities for V&V and UQ activities, data assessment and processing, and information and data searches. From its inception, NE-KAMS will directly support nuclear energy research, development and demonstration programs within the U.S. Department of Energy (DOE), including the Consortium for Advanced Simulation of Light Water Reactors (CASL), the Nuclear Energy Advanced Modeling and Simulation (NEAMS), the Light Water Reactor Sustainability (LWRS), the Small Modular Reactors (SMR), and the Next Generation Nuclear Power Plant (NGNP) programs. These programs all involve computational modeling and simulation (M&S) of nuclear reactor systems, components and processes, and it is envisioned that NE-KAMS will help to coordinate and facilitate collaboration and sharing of resources and expertise for V&V and UQ across these programs. In addition, from the outset, NE-KAMS will support the use of computational M&S in the nuclear industry by developing guidelines and recommended practices aimed at quantifying the uncertainty and assessing the applicability of existing analysis models and methods. The NE-KAMS effort will initially focus on supporting the use of computational fluid dynamics (CFD) and thermal hydraulics (T/H) analysis for M&S of nuclear reactor systems, components and processes, and will later expand to include materials, fuel system performance and other areas of M&S as time and funding allow.

Rich Johnson; Kimberlyn C. Mousseau; Hyung Lee

2011-09-01T23:59:59.000Z

158

Astrophysically Important 19Ne States Studied with the 2H(18F,alpha+15O)n Reaction  

Science Conference Proceedings (OSTI)

The nuclear structure of {sup 19}Ne near the proton threshold is of interest for understanding the rates of proton-induced reactions on {sup 18}F in novae. Analogues for several states in the mirror nucleus {sup 19}F have not yet been identified in {sup 19}Ne indicating the level structure of {sup 19}Ne in this region is incomplete. The {sup 18}F(d;n){sup 19}Ne and {sup 18}F(d,p){sup 19}F reactions have been measured simultaneously at E{sub c.m.} = 14.9 MeV. The experiments were performed at the Holifield Radioactive Ion Beam Facility (HRIBF) of Oak Ridge National Laboratory (ORNL) by bombarding a 720-mg/cm{sub 2} CD{sub 2} target with a radioactive {sup 18}F beam. The {sup 19}Ne states of interest near the proton threshold decay by breakup into a and {sup 15}O particles. These decay products were detected in coincidence with position-sensitive E-{Delta}E silicon telescopes. The {alpha} and {sup 15}N particles from the break up of the mirror nucleus {sup 19}F were also measured with these detectors. Particle identification, coincidence, and Q-value requirements enable us to distinguish the reaction of interest from other reactions. The reconstruction of relative energy of the detected particles reveals the excited states of {sup 19}Ne and {sup 19}F which are populated. The neutron (proton) angular distributions for states in {sup 19}Ne ({sup 19}F) were extracted using momentum conservation. The observed states in {sup 19}Ne and {sup 19}F will be presented.

Adekola, Aderemi S [ORNL; Bardayan, Daniel W [ORNL; Blackmon, Jeff C [ORNL; Brune, C. [Ohio University; Chae, K. Y. [University of Tennessee, Knoxville (UTK); Champagne, A. E. [University of North Carolina, Chapel Hill; Domizioli, Carlo P [ORNL; Greife, U. [Colorado School of Mines, Golden; Heinen, Z. [Ohio University; Hornish, M. [Ohio University; Johnson, Micah [ORNL; Jones, K. L. [University of Tennessee, Knoxville (UTK); Kapler, R. [University of Tennessee, Knoxville (UTK); Livesay, Jake [ORNL; Ma, Zhanwen [ORNL; Massey, T. [Ohio University; Moazen, Brian [University of Tennessee, Knoxville (UTK); Nesaraja, Caroline D [ORNL; Pain, Steven D [ORNL; ShrinerJr., J. F. [Tennessee Technological University; Thomas, J. S. [Rutgers University; Smith, Nathan A [ORNL; Smith, Michael Scott [ORNL; Visser, D. W. [University of North Carolina, Chapel Hill; Voinov, A. [Ohio University

2009-01-01T23:59:59.000Z

159

The Role of Manganese Dioxide (MnO2) Deposition in Microbiologically Influenced Corrosion  

Science Conference Proceedings (OSTI)

This report documents the role of manganese dioxide (MnO2) in microbiologically influenced corrosion.

2004-12-20T23:59:59.000Z

160

NE-24  

Office of Legacy Management (LM)

the Bureau of Hines Site at Albany, Oregon, for Remedial the Bureau of Hines Site at Albany, Oregon, for Remedial Action Under the Formerly Utilized Sites Remedial Action Program I L@ _I' J.-La&one, Manager Oak Ridge Operations Office Based on the data in the attached draft reports, it has been determined that the subject site is contaminated with residual radioactive material ' as a result of Manhattan Engineer District/Atomic Energy Commission operations P * at this site. The contamination is in excess of the acceptable guidelines and warrants some form of remedial action under the Fornlerly Utilized Sites Reriledial Action Program. It should be noted that the attached reports are draft reports and although subject to change, the changes expected will not effect the designation of the site; therefore, the reports are Suitable for -

Note: This page contains sample records for the topic "ne sd mn" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

NE-23  

Office of Legacy Management (LM)

s,' s,' Whidd Pk. Yilljam West West Orange Tennis Club, Inc. 200 Pleasant Valley Way West Orange, New Jersey 07052 Dear Mr. West: The Department of Energy (DOE), as part of its Formerly Utilized Sites Remedial Action Program (FUSRAP), has reviewed information on Vitro Laboratories, formerly located on what is now property of the West Orange Tennis Club, to determine whether it contains residual radioactivity traceable to activities conducted on behalf of the Atomic Energy Commission (a predecessor to DOE). A radiological survey indicated that the radiation levels and radionuclide concentrations are at or near natural background levels. Therefore, no remedial action is required, and DOE is eliminating the former Vitro site from further consideration under FL&RAP.

162

DOE - Office of Legacy Management -- Twin Cities Ammunition - MN 0-01  

NLE Websites -- All DOE Office Websites (Extended Search)

Twin Cities Ammunition - MN 0-01 Twin Cities Ammunition - MN 0-01 FUSRAP Considered Sites Site: TWIN CITIES AMMUNITION (MN.0-01) Eliminated from further consideration under FUSRAP - Referred to DOD Designated Name: Not Designated Alternate Name: None Location: New Brighton , Minnesota MN.0-01-1 Evaluation Year: 1987 MN.0-01-2 Site Operations: Site was formerly licensed under 10CFR 70 by the NRC. MN.0-01-1 MN.0-01-2 Site Disposition: Eliminated - No Authority - Referred to DOD MN.0-01-1 Radioactive Materials Handled: None Indicated Primary Radioactive Materials Handled: None Radiological Survey(s): None Indicated Site Status: Eliminated from further consideration under FUSRAP - Referred to DOD MN.0-01-2 Also see Documents Related to TWIN CITIES AMMUNITION MN.0-01-1 - DOE Letter; Mott to Spence; Listings of Military

163

Effects of Mn Doping on the Dielectric Properties of Nnanostructured ...  

Science Conference Proceedings (OSTI)

In order to further improve the insulation resistance, manganese (Mn) was introduced (0.005 at%-1.0 at%) into the TiO2 system by a powder coating process...

164

International Falls, MN Natural Gas Pipeline Imports From Canada...  

U.S. Energy Information Administration (EIA) Indexed Site

per Thousand Cubic Feet) International Falls, MN Natural Gas Pipeline Imports From Canada (Dollars per Thousand Cubic Feet) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5...

165

International Falls, MN Natural Gas Pipeline Imports From Canada...  

U.S. Energy Information Administration (EIA) Indexed Site

Million Cubic Feet) International Falls, MN Natural Gas Pipeline Imports From Canada (Million Cubic Feet) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8...

166

Diluted magnetic semiconductor effects in Mn-implanted silicon carbide  

Science Conference Proceedings (OSTI)

Light transmission and Faraday rotation spectra measured at the temperature of 2 K were compared for silicon carbide single crystals of 4H polytype (4H-SiC), implanted with 3.8 x 10{sup 16} cm{sup -2} of Mn ions at the beam energy of 190 keV, and a control 4H-SiC single crystal sample, which was not implanted. Mn ion implantation led to the creation of a Mn-doped surface layer with the average Mn concentration of 10{sup 21} cm{sup -3} and a thickness of approximately 0.2 {mu}m. Transmission of light through the implanted crystal changed only slightly in comparison with the control sample, which however, corresponded to a relatively strong attenuation in the implanted layer. This was interpreted as a result of scattering, which emerges in the surface layer due to optical nonuniformities, created by the high energy ion irradiation. The presence of a thin Mn-ion-containing surface layer led, despite its small thickness, to noticeable changes in the sample Faraday rotation spectra. The estimated values of the Verdet constant for this layer were about three orders of magnitude larger and of opposite sign compared to the Verdet constant values of the undoped sample. Magnetic field dependencies of the Faraday rotation contribution from the implanted layer were found to be saturating functions, which points to a proportionality of the Faraday rotation to the magnetization of the paramagnetic Mn ion subsystem. Based on these findings we conclude that the Mn-implanted SiC layer exhibits magneto-optical properties typical of a diluted magnetic semiconductor. At the same time, no ferromagnetic ordering was observed in the studied (Si, Mn)C sample.

Komarov, A. V.; Ryabchenko, S. M. [Institute of Physics of the National Academy of Sciences of Ukraine, 46 Nauki Ave., Kiev 03028 (Ukraine); Los, A. V. [ISS Ltd., Semiconductors and Circuits Lab, 15 Bozhenko Street, Kiev 03680 (Ukraine); Freescale Semiconductor Ukraine LLC., 15 Bozhenko Street, Kiev 03680 (Ukraine); Romanenko, S. M. [ISS Ltd., Semiconductors and Circuits Lab, 15 Bozhenko Street, Kiev 03680 (Ukraine)

2011-04-15T23:59:59.000Z

167

1 Summary: NE cod FSP survey 2003-08 The trawler Abbie Lee was  

E-Print Network (OSTI)

chartered in October/November 2008 to carry out the sixth in a series of FSP surveys of cod and other gadoids off the NE coast of England. Surveys since 2005 have utilised tows spread out over the survey area, with additional tows in defined areas with coarser seabed types (hard ground) where cod abundance is expected to be greatest. As in previous FSP surveys, cod were most abundant on or near the hard ground, whereas haddock were mainly on the softer seabed sediments offshore. Whiting distribution showed no clear relationship with seabed type. 6 5

Jos De Oliveira; Guy Pasco; Mike Armstrong; Peter Randall; Cefas Lowestoft

2009-01-01T23:59:59.000Z

168

Temperature Effects on the Perturber Induced Shift of Dopant Ionization Energies in He and Ne  

SciTech Connect

In this Letter, temperature effects on the perturber induced shift {Delta}{sub D}({rho}{sub P}) [{rho}{sub P} {equivalent_to} perturber number density] of the dopant ionization energy in the repulsive gases Ne and He are investigated at low to medium perturber densities (i.e., {rho}{sub P} {<=} 6.0 x 10{sup 21} cm{sup -3}). We show that these effects arise form changes in the ensemble averaged dopant/perturber polarization energy rather than from changes in the energy of the quasi-free electron.

C Evans; Y Lushtak; X Shi; L Li; G Findley

2011-12-31T23:59:59.000Z

169

Horn Operational Experience in K2K, MiniBooNE, NuMI and CNGS  

E-Print Network (OSTI)

This paper gives an overview of the operation and experience gained in the running of magnetic horns in conventional neutrino beam lines (K2K, MiniBooNE, NuMI and CNGS) over the last decade. Increasing beam power puts higher demands on horn conductors but even more on their hydraulic and electrical systems, while the horn environment itself becomes more hostile due to radiation. Experience shows that designing horns for remote handling and testing them extensively without beam become prerequisites for successful future neutrino beam lines.

Pardons, A

2008-01-01T23:59:59.000Z

170

DOE-NE Proliferation and Terrorism Risk Assessment: FY12 Plans Update  

SciTech Connect

This presentation provides background information on FY12 plans for the DOE Office of Nuclear Energy Proliferation and Terrorism Risk Assessment program. Program plans, organization, and individual project elements are described. Research objectives are: (1) Develop technologies and other solutions that can improve the reliability, sustain the safety, and extend the life of current reactors; (2) Develop improvements in the affordability of new reactors to enable nuclear energy; (3) Develop Sustainable Nuclear Fuel Cycles; and (4) Understand and minimize the risks of nuclear proliferation and terrorism - Goal is to enable the use of risk information to inform NE R&D program planning.

Sadasivan, Pratap [Los Alamos National Laboratory

2012-06-21T23:59:59.000Z

171

Radiative rates and electron impact excitation rate coefficients for Ne-like selenium, Se XXV  

Science Conference Proceedings (OSTI)

In this article we report calculations of energy levels, radiative rates, electron impact collision strengths, and effective collision strengths for transitions among the 241 fine-structure levels arising from 2l{sup 8} and 2l{sup 7}n{sup '}l{sup '} (n{sup '{241 levels. The effective collision strengths are reported for all 28920 transitions among the 241 levels over a wide temperature range up to 10 keV. To assess the reliability and accuracy of the present collisional data, we have performed a 27-state close-coupling calculation, employing the Dirac R-matrix theory. The results from the close-coupling calculation and the independent-process calculation for the identical target states are found to be in good agreement. - Highlights: {yields} Radiative and collisional atomic data are presented for the lowest 241 fine-structure levels in Ne-like Se. {yields} Calculations are performed using the FAC package. {yields} Resonances enhance significantly a large amount of transitions. {yields} Radiative damping effects are significant for many transitions. {yields} Close-coupling effects are small in Ne-like Se.

Wang, K.; Chen, C.Y., E-mail: chychen@fudan.edu.cn; Huang, M.; Wang, Y.S.; Zou, Y.M.

2011-07-15T23:59:59.000Z

172

Photoionization-pumped, Ne II, x-ray laser studies project. Final report  

SciTech Connect

The energetics of this pumping scheme are shown. Short-pulse (50 to 100 ps) laser irradiation of an appropriate x-ray flashlamp medium generates broad-band emission in the range of 300 to 800 eV which preferentially photoionizes Ne to the /sup 2/S state of Ne II creating an inversion at approximately 27 eV. Although this approach does not depend on precise spectral overlap between the x-ray pump radiation and the medium to be pumped, it does require that the x-ray medium remain un-ionized prior to photoionization by the soft x-ray emission. Well-controlled focus conditions are required to ensure that the x-ray medium is not subjected to electron or x-ray preheat prior to irradiation by the soft x-ray source. The magnitude of the population inversion is predicted to be critically dependent upon rapid photoionization of the two states; therefore, ultra-short pulse irradiation of the laser flashlamps is required.

Richardson, M.C.; Hagelstein, P.L.; Eckart, M.J.; Forsyth, J.M.; Gerrassimenko, M.; Soures, J.M.

1984-01-01T23:59:59.000Z

173

Helioseismic Constraints on the Solar Ne/O Ratio and Heavy Element Abundances  

E-Print Network (OSTI)

We examine the constraints imposed by helioseismic data on the solar heavy element abundances. In prior work we argued that the measured depth of the surface convection zone R_CZ and the surface helium abundance Y_surf were good metallicity indicators which placed separable constraints on light metals (CNONe) and the heavier species with good relative meteoritic abundances. The resulting interiors-based abundance scale was higher than some published studies based on 3D model atmospheres at a highly significant level. In this paper we explore the usage of the solar sound speed in the radiative interior as an additional diagnostic, and find that it is sensitive to changes in the Ne/O ratio even for models constructed to have the same R_CZ and Y_surf. Three distinct helioseismic tests (opacity in the radiative core, ionization in the convection zone, and the core mean molecular weight) yield consistent results. Our preferred O, Ne and Fe abundances are 8.86 +/-0.04, 8.15 +/-0.17 and 7.50 +/-0.05 respectively. Th...

Delahaye, F; Pinsonneault, L; Zeippen, C J

2010-01-01T23:59:59.000Z

174

Light charged particle emission from hot $^{32}$S$^{*}$ formed in $^{20}$Ne + $^{12}$C reaction  

E-Print Network (OSTI)

Inclusive energy distributions for light charged particles ($p, d, t$ and $\\alpha$) have been measured in the $^{20}$Ne (158, 170, 180, 200 MeV) + $^{12}$C reactions in the angular range 10$^{o}$ -- 50$^{o}$. Exclusive light charged particle energy distribution measurements were also done for the same system at 158 MeV bombarding energy by in-plane light charged particle -- fragment coincidence. Pre-equilibrium components have been separated out from proton energy spectra using moving source model considering two sources. The data have been compared with the predictions of the statistical model code CASCADE. It has been observed that significant deformation effects were needed to be introduced in the compound nucleus in order to explain the shape of the evaporated $d, t$ energy spectra. For protons, evaporated energy spectra were rather insensitive to nuclear deformation, though angular distributions could not be explained without deformation. Decay sequence of the hot $^{32}$S nucleus has been investigated through exclusive light charged particle measurements using the $^{20}$Ne (158 MeV) + $^{12}$C reaction. Information on the sequential decay chain has been extracted through comparison of the experimental data with the predictions of the statistical model. It is observed from the present analysis that exclusive light charged particle data may be used as a powerful tool to probe the decay sequence of hot light compound systems.

Aparajita Dey; S. Bhattacharya; C. Bhattacharya; K. Banerjee; T. K. Rana; S. Kundu; S. R. Banerjee; S. Mukhopadhyay; D. Gupta; R. Saha

2008-07-01T23:59:59.000Z

175

Characterization of nonthermal Ne-N{sub 2} mixture radio frequency discharge  

Science Conference Proceedings (OSTI)

This paper deals with optical emission spectroscopic studies of low pressure (p=0.1{yields}0.5 mbar) Ne-N{sub 2} capacitively coupled radio frequency (rf) plasma that can be used for plasma nitriding, etc. It reports the methods to calculate the electron temperature (T{sub e}) in nonthermal plasmas. Since, the selected Ne I lines, used to calculate electron temperature, are found in corona balance; therefore, it allows us to use modified Boltzmann technique to calculate electron temperature. Langmuir probe is also used to calculate electron temperature and electron energy distribution functions (EEDFs). The measurements are worked out for different discharge parameters like neon percentage, filling pressure and RF power. It is found that electron temperature increases with the increase in neon percentage and decreases with the increase in pressure, whereas excitation temperature (T{sub exc}) increases with power, neon percentage, and decreases with pressure. It is also observed that electron temperature measured by Langmuir probe technique is slightly greater than the one measured via modified Boltzmann plot method. The tails of the EEDFs gain height and extend toward the higher energy with the increase in neon percentage in the mixture.

Rehman, N. U.; Zakaullah, M. [Department of Physics, Quaid-i-Azam University, 45320 Islamabad (Pakistan); Khan, F. U. [Department of Physics, Gomal University, 29050 D.I. Khan (Pakistan); Naseer, S. [Department of Physics, Peshawar University, 25120 Peshawar (Pakistan)

2008-12-15T23:59:59.000Z

176

Relation between giant volume magnetostriction, colossal magnetoresistance, and crystal lattice softening in manganites La{sub 1-x}A{sub y}MnO{sub 3} (A = Ca, Ag, Ba, Sr)  

Science Conference Proceedings (OSTI)

Giant volume magnetostriction (GVM) is detected near the Curie temperature T{sub C} in La{sub 1-x}A{sub x}MnO{sub 3} single crystals (A = Ca, Sr, Ba, 0.1 {giant volume magnetostriction attains a value of 6.5 x 10{sup -4} in a magnetic field of 8.2 kOe). The behavior of GVM and colossal magnetoresistance (CMR) is found to be the same: both quantities have negative values, the temperature dependences of their absolute values pass through a peak, and the isotherms do not exhibit saturation up to the maximal measuring fields of 130 kOe. In compounds with compositions La{sub 0.7}Ba{sub 0.3}MnO{sub 3} and La{sub 0.85}Ag{sub 0.15}MnO{sub 3}, GVM and CMR were observed at room temperatures (in a magnetic field of 8.2 kOe, GVM attains values of 2.54 x 10{sup -4} and 2 x 10{sup -4} and CMR is equal to 11.6 and 11.2%, respectively). Both phenomena are attributed to the presence of a magnetic (ferromagnetic-antiferromagnetic) two-phase state in these systems, which is associated with a strong s-d exchange. It is found that the maximum value of the GVM in single crystals of La{sub 1-x}A{sub x}MnO{sub 3} (A = Ba, Sr, Ca, Ag) depends on the radius R{sub A} of cation A (it is the higher, the larger the difference |R{sub A}-R{sub LA{sup 3}{sup +}}|). The only exception is the compound with A = Ag, in which the pattern is complicated by additional defectiveness. Local disorder in the La{sub 1-x}A{sub x} sublattice, which is associated with the presence of cations with different radii, leads to a displacement of oxygen ions and to crystal lattice softening. The exchange s-d interactions in La{sub 1-x}A{sub x}MnO{sub 3} (A = Ca, Sr, Ba, Ag) are found to be comparable with electrostatic interactions ensuring the existence of the crystal; this facilitates manifestation of the GVM.

Koroleva, L. I., E-mail: koroleva@phys.msu.ru; Demin, R. V.; Kozlov, A. V.; Zashchirinskii, D. M. [Moscow State University (Russian Federation); Mukovskii, Ya. M. [Moscow Institute of Steel and Alloys (Russian Federation)

2007-02-15T23:59:59.000Z

177

Studies on a novel secondary battery: MH/MnO{sub 2} rechargeable battery. 2: Characteristics of the MnO{sub 2} cathode  

SciTech Connect

The characteristics of the MnO{sub 2} cathode of a MH/MnO{sub 2} battery have been studied by cyclic voltammetry, x-ray diffraction, and potentiostatic techniques. It was found that the addition of Ni(OH){sub 2} to the MnO{sub 2} can prevent overcharge of the MnO{sub 2} and decrease the imbalance of the charge/discharge states of the positive and negative electrodes, raise the working voltage of the MH/MnO{sub 2} cell, and prevent the formation of Mn{sub 3}O{sub 4}, thereby improving the rechargeability of the MnO{sub 2} electrode. The discharge mechanism is also discussed.

Xia, X.; Guo, Z. [Xinjiang Univ., Urumqi, Xinjiang (China). Dept. of Chemistry

1997-08-01T23:59:59.000Z

178

Molecular beam epitaxy growth of exchange-biased PtMn/NiFe bilayers with a spontaneously ordered PtMn layer  

Science Conference Proceedings (OSTI)

We report the direct epitaxial growth of equiatomic ordered antiferromagnetic PtMn layers by molecular beam epitaxy. Such layers are used in giant magnetoresistance spin valve sensors as the antiferromagnetic pinning layer. Structural characterization and phase identification confirmed the spontaneous formation of the chemically ordered face-centered-tetragonal (L1{sub 0}) phase of PtMn with about 87.4% ordering. Based on the antiferromagnetic PtMn layer, we prepared exchange-biased PtMn/NiFe bilayers with various PtMn thicknesses. The exchange anisotropy field of the bilayer with NiFe grown on PtMn stabilizes at about 50 Oe beyond a PtMn thickness of 15 nm. Although the exchange anisotropy field is small compared to that of the polycrystalline system, the antiferromagnetic domain structure is stable over repetitive external magnetic field cycling and no training effect is observed.

Choi, Y. S.; Petford-Long, A. K.; Ward, R. C. C.; Fan, R.; Goff, J. P.; Hase, T. P. A. [Department of Materials, University of Oxford, Parks Road, Oxford OX1 3PH (United Kingdom); Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU (United Kingdom); Department of Physics, University of Liverpool, Liverpool L69 7ZE (United Kingdom); Department of Physics, University of Durham, Durham DH1 3LE (United Kingdom)

2006-04-15T23:59:59.000Z

179

MN471004, Electrical Safety Manual Sponsor: Michael W. Hazen, 4000  

NLE Websites -- All DOE Office Websites (Extended Search)

MN471004, Electrical Safety Manual MN471004, Electrical Safety Manual Sponsor: Michael W. Hazen, 4000 Revision Date: June 9, 2011 Replaces Document Dated: September 4, 2007 This document is no longer a CPR. This document implements the requirements of Corporate Procedure ESH100.2.ELC.1, Manage Electrical Hazards. IMPORTANT NOTICE: A printed copy of this document may not be the document currently in effect. The official version is the online version located on the Sandia Restricted Network (SRN). Subject Matter Experts: Marc Williams and David Paoletta MN471004, Issue S Revision Date: June 9, 2011; Replaces Document Dated: April 29, 2008 Review Date: August 29, 2007 Administrative Changes: February 5, 2008, June 28, 2010, July 28, 2010, May 26, 2011, June 9, 2011, November 28, 2011, February 1, 2012

180

Measurement of the nu(mu)-CCQE cross-section in the SciBooNE experiment  

SciTech Connect

SciBooNE is a neutrino and anti-neutrino cross-section experiment at Fermilab, USA. The SciBooNE experiment is summarized and two independent CCQE analyses are described. For one of the analyses, an absolute {nu}{sub {mu}}-CCQE cross section in the neutrino energy region (0.6-1.6) GeV is shown and the technique developed for such a purpose is also explained. The total cross section measured over this energy range agrees well with expectations, based on the NEUT event generator and using a value of 1.21 GeV for the CCQE axial mass.

Alcaraz-Aunion, Jose Luis; /Barcelona, IFAE; Walding, Joseph; /Imperial Coll., London

2009-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "ne sd mn" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

New Results from MiniBooNE Charged-Current Quasi-Elastic Anti-Neutrino Data  

SciTech Connect

MiniBooNE anti-neutrino charged-current quasi-elastic (CCQE) data is compared to model predictions. The main background of neutrino-induced events is examined first, where three independent techniques are employed. Results indicate the neutrino flux is consistent with a uniform reduction of {approx}20% relative to the largely uncertain prediction. After background subtraction, the Q{sup 2} shape of {bar v}{sub {mu}} CCQE events is consistent with the model parameter MA = 1.35 GeV determined from MiniBooNE v{sub {mu}} CCQE data, while the normalization is {approx} 20% high compared to the same prediction.

Grange, Joseph

2011-07-01T23:59:59.000Z

182

Rechargeable Zn-MnO sub 2 alkaline batteries  

SciTech Connect

In this paper progress in the development of rechargeable alkaline zinc-manganese dioxide cells is described. The advantages and limitations of the system are evaluated. Laboratory tests run on commercial primary alkaline cells as well as model simulations of a bipolar MnO{sub 2} electrode show that the rechargeable alkaline battery may be able to compete with lead-acid, nickel-cadmium, and secondary lithium cells for low- to moderate-rate applications. However, because of this poor performance at high rates and low temperatures, the alkaline MnO{sub 2} battery is not suitable for present automotive starting applications.

Wruck, W.J.; Reichman, B.; Bullock, K.R.; Kao, W.H. (Corporate Applied Research, Johnson Controls, Inc., Milwaukee, WI (US))

1991-12-01T23:59:59.000Z

183

Magnetic properties of a metal-organic antiferromagnet Mn,,hfipbb...py,,H2O...0.5  

E-Print Network (OSTI)

crystallographically independent Mn atoms Mn1 and Mn2 exist in this structure, and an alternate connection ­MnMnMn are discovered. Here we report the synthesis, structure, and magnetic properties of a metal-organic coordination 0.195, 0.5 mmol , py 2 ml , and H2O 5 ml was sealed in a Teflon-lined acid digestion bomb and heated

Li, Jing

184

Disentangling the Mn moments on different sublattices in the half-metallic ferrimagnet Mn3?xCoxGa  

SciTech Connect

Ferrimagnetic Mn{sub 3-x}Co{sub x}Ga compounds have been investigated by magnetic circular dichroism in x-ray absorption (XMCD). Compounds with x > 0.5 crystallize in the CuHg{sub 2}Ti structure. A tetragonal distortion of the cubic structure occurs for x {le} 0.5. For the cubic phase, magnetometry reveals a linearly increasing magnetization of 2x Bohr magnetons per formula unit obeying the generalized Slater-Pauling rule. XMCD confirms the ferrimagnetic character with Mn atoms occupying two different sublattices with antiparallel spin orientation and different degrees of spin localization and identifies the region 0.6 < x {le} 0.8 as most promising for a high spin polarization at the Fermi level. Individual Mn moments on inequivalent sites are compared to theoretical predictions.

Klaer, P.; Jenkins, C.A.; Alijani, V.; Winterlik, J.; Balke, B.; Felser, C.; Elmers, H.J.

2011-05-03T23:59:59.000Z

185

Thermal Instability of Olivine-type LiMnPO4 Cathodes  

NLE Websites -- All DOE Office Websites (Extended Search)

Thermal Instability of Olivine-type LiMnPO4 Cathodes Title Thermal Instability of Olivine-type LiMnPO4 Cathodes Publication Type Journal Article Year of Publication 2010 Authors...

186

Electrodeposited Al-Mn Alloys with Microcrystalline, Nanocrystalline, Amorphous and Nano-quasicrystalline Structures  

E-Print Network (OSTI)

AlMn alloys with Mn content ranging from 0 to 15.8 at.% are prepared by electrodeposition from an ionic liquid at room temperature, and exhibit a remarkably broad range of structures. The alloys are characterized through ...

Ruan, Shiyun

187

Laser Rock Drilling on the History Channel - The NE Multimedia Collection  

NLE Websites -- All DOE Office Websites (Extended Search)

Departments > System Technologies & Diagnostics > Videos Departments > System Technologies & Diagnostics > Videos Laser Oil & Gas Well Drilling: Laser Rock Drilling on the History Channel Argonne's Laser Applications Lab and researcher Claude Reed (NE) appeared in the History Channel program "Modern Marvels: Drilling" (May 10, 2006). "Modern Marvels" relates the ingenuity, invention and imagination behind everyday items, technological breakthroughs and man-made wonders. :: Please wait until video loads completely :: Argonne Experts Dr. Claude B. Reed is one of the Experts featured in the Argonne Experts Guide. The video is in mp4 format. Closed Captioning Transcript Live Closed captioning of the video is not available; however -as an alternative- we provide a transcript of the audio portion of this video as a separate web page.

188

Markus Popa, DOE (OCRWM) Bill Sherman, NE HLRW Task Force Robert Holden, NCAI  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Minutes Monday, November 3rd 2:00-3:00 p.m. (EST) Minutes Monday, November 3rd 2:00-3:00 p.m. (EST) Participants included: Markus Popa, DOE (OCRWM) Bill Sherman, NE HLRW Task Force Robert Holden, NCAI Mike Butler, UETC Bob Fronczak, AAR Kevin Blackwell, FRA Mike Butler (UETC) greeted participants and informed the group of previous notification by Robert Light (Mescalero Apache Tribe), Robert Centracco (FRA), and Mike Calhoun (FRA) that they would be unable to join the call. Mr. Butler began the call with a brief update on the status of Matrix 1, now entitled "Summary of Rail and Highway Regulations and their Applicability to States, Tribes, Shippers, and Carriers." He informed the group that he had completed an initial draft of the matrix, but that he was making substantial revisions to it and therefore he had not distributed it to the entire group for

189

NE-24 R&D Decontamination Projects Under the Formerly Utilized Sites Remedial  

Office of Legacy Management (LM)

" _ ,' ,:.' : " _ ,' ,:.' : NE-24 R&D Decontamination Projects Under the Formerly Utilized Sites Remedial Action Program (FUSRAP) '. * * ,~~'.'J.' L.aGrone, Manager Oak Ridge Operations O fffce As a result of the House-Senate Conference Report and the Energy and W a ter Appropriations Act for FY 1984, and based on the data in the attached reports indicating radioactive contamination In excess of acceptable guidelines, the sites listed In the attachment and their respectfve vicinity properties (contaminated with radioactive materials from these sites) are being designated as decontamination research and development projects under the FUSRAP. Each site and the associated vicinity properties should be treated as a separate project. . . -_ The objectjve of each project is to decontaminate the vicinity properties

190

NE-23 Elimination of the Chupadera Mesa and Los Alamos County Industrial Waste  

Office of Legacy Management (LM)

AM? 2 2 1986 AM? 2 2 1986 NE-23 Elimination of the Chupadera Mesa and Los Alamos County Industrial Waste Line Sites from Further Consideration for FUSRAP Inclusion Carlos E. Garcia, Director Environmental Safety and Health Division Albuquerque Operations Office The enclosed material is being provided to you to document the final actions taken under the Department's Formerly Utilized Sites Remedial Action Program (FUSRAP) for the Chupadera Mesa area and the Los Alamos County Industrial Waste Lines, New Mexico. Copies of designation/ elimination reviews for each of the sites are enclosed for your records. We have determined that neither site warrants inclusion in the remedial action program. Primary sources of data for this determination were two survey reports prepared through your Division, LA-10256-MS, "Radiological

191

K-SHELL PHOTOIONIZATION AND PHOTOABSORPTION OF Ne, Mg, Si, S, Ar, AND Ca  

Science Conference Proceedings (OSTI)

We present extensive computations of photoabsorption and photoionization cross sections across the K-edge of Ne, Mg, Si, S, Ar, and Ca ions with less than 11 electrons. The calculations are performed using the Breit-Pauli R-matrix method and include the effects of radiative and Auger damping by means of an optical potential. The wave functions are constructed from single-electron orbital bases obtained using a Thomas-Fermi-Dirac statistical model potential. Configuration interaction is considered among all fine-structure levels within the n = 2 complex. The damping processes affect the resonances converging to the K thresholds causing them to display symmetric profiles of constant width that smear the otherwise sharp edge at the photoionization thresholds.

Witthoeft, M. C.; Kallman, T. R. [NASA Goddard Space Flight Center, Code 662, Greenbelt, MD 20771 (United States); Bautista, M. A. [Department of Physics, Virginia Polytechnic and State University, Blacksburg, VA 24061 (United States); Mendoza, C. [Centro de Fisica, Instituto Venezolano de Investigaciones CientIficas (IVIC), Caracas 1020A (Venezuela, Bolivarian Republic of); Palmeri, P.; Quinet, P. [Astrophysique et Spectroscopie, Universite de Mons-Hainaut, B-7000 Mons (Belgium)], E-mail: bautista@vt.edu

2009-05-15T23:59:59.000Z

192

Effect of supplementation on vitamin A and zinc nutriture of children in northeast (NE) Thailand  

SciTech Connect

Previous surveys of the nutritional status of young children in NE Thailand suggested that they may benefit from vitamin A (VA) and/or zinc (Zn) supplementation. 140 children, with low plasma retinol concentrations were entered in a double-blind study. They were randomized and supplemented with either VA, Zn, VA + Zn or placebo each weekday for 6 mos. All subjects consumed their usual diet that provided adequate protein, less than recommended calories, fat, Zn and VA. Biochemical indices of VA and Zn status increased significantly. The children had adequate VA liver stores as assessed by relative dose response. Zn supplementation resulted in improvement of vision restoration time in dim light using rapid dark adaptometry. VA and Zn synergistically normalized conjunctival epithelium after a 6 mo supplementation. Data suggest that functional improvements of populations with suboptimal VA and Zn nutriture can be accomplished by supplementation with {lt}2 times of RDA of these nutrients.

Udomkesmalee, E.; Dhanamitta, S.; Charoenklatkul, S.; Tantipopipat, S.; Banjong, O.; Rojroongwasinkul, N.; Kramer, T.R.; Smith, J.C. Jr. (Mahidol Univ., Nakhon Pathom (Thailand) USDA, Beltsville, MD (United States))

1991-03-11T23:59:59.000Z

193

First direct measurement of resonance strengths in {sup 17}O({alpha},{gamma}){sup 21}Ne  

SciTech Connect

The reaction {sup 17}O({alpha},{gamma}){sup 21}Ne has been measured by in-beam {gamma} spectroscopy for the first time in the energy range E{sub {alpha}=}750-1650 keV using highly enriched anodized Ta{sub 2}({sup 17}O){sub 5} targets. Resonances were found at E{sub {alpha}=} 1002, 1386, and 1619 keV. Their strengths and primary {gamma}-ray branchings are given. The new results exclude the low reaction rate of Descouvemont and support the rate of Caughlan and Fowler. Implications for the neutron poisoning efficiency of {sup 16}O in the weak s-process are discussed.

Best, A.; Goerres, J.; Couder, M.; Boer, R. de; Falahat, S.; Kontos, A.; LeBlanc, P. J.; Li, Q.; O'Brien, S.; Sonnabend, K.; Talwar, R.; Uberseder, E.; Wiescher, M. [Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556 (United States)

2011-05-15T23:59:59.000Z

194

KM3NeT:a large underwater neutrino telescope in the Mediterranean Sea  

E-Print Network (OSTI)

High energy neutrinos produced in astrophysical processes will allow for a new way of studying the universe. In order to detect the expected flux of high energy neutrinos from specific astrophysical sources, neutrino telescopes of a scale of a km^3 of water will be needed. A Northern Hemisphere detector is being proposed to be sited in a deep area of the Mediterranean Sea. This detector will provide complimentary sky coverage to the IceCube detector being built at the South Pole. The three neutrino telescope projects in the Mediterranean (ANTARES, NEMO and NESTOR) are partners in an effort to design, and build such a km^3 size neutrino telescope, the KM3NeT. The EU is funding a 3-year Design Study; the status of the Design Study is presented and some technical issues are discussed.

P. A. Rapidis; for the KM3NeT consortium

2008-03-17T23:59:59.000Z

195

Assessment of the Diffusive Gradients in Thin-films (DGT) technique to assess the plant availability of Mn in soils.  

E-Print Network (OSTI)

predicts copper availability to plants. EnvironmentalAttempts to assess Mn availability have been impeded due towill influence the Mn availability. Often flooding of soils

Mundus, Simon; Husted, Sren; Lombi, Enzo

2009-01-01T23:59:59.000Z

196

Control of magnetic properties of MnBi and MnBiCu thin films by Kr{sup +} ion irradiation  

SciTech Connect

Mn{sub 52}Bi{sub 48} (15 nm) and Mn{sub 54}Bi{sub 24}Cu{sub 21} (15 nm) thin films were prepared by the magnetron sputtering and vacuum annealing at 350 deg. C, and the variations of their structures and magnetic properties with 30 keV Kr{sup +} ion irradiation were studied. The MnBi and MnBiCu films exhibited saturation magnetizations M{sub s} of 180 emu/cc and 210 emu/cc, the coercivities H{sub c} of 10 kOe and 3.4 kOe, respectively. The M{sub s} and H{sub c} of the MnBi abruptly vanished by the irradiation of ion dose at 3 x 10{sup 14} ions/cm{sup 2}, while those of the MnBiCu film gradually decreased with increasing the ion dose and became zero at 5 x 10{sup 13} ions/cm{sup 2}. The different trend on the ion irradiation between MnBi and MnBiCu films is understood by the surface structure of the film, i.e., the MnBi has convex islands on its surface, which protect the underneath NiAs-type MnBi from the irradiation, while the MnBiCu has rather flat surface, and its crystal structure was uniformly modified by the irradiation. From the surface flatness and the uniformity of the MnBiCu film, as well as the low annealing temperature of 350 deg. C, it was concluded that the MnBiCu film is one of the attractive materials for high-density ion irradiation bit patterned media.

Xu Qianqian; Kanbara, Ryutarou; Kato, Takeshi; Iwata, Satoshi [Department of Quantum Engineering, Nagoya University Furo-cho, Chikusa-ku, Nagoya, 464-8603 (Japan); Tsunashima, Shigeru [Department of Research, Nagoya Industrial Science Research Institute, 1-13 Yotsuya-dori, Chikusa-ku, Nagoya 460-0819 (Japan)

2012-04-01T23:59:59.000Z

197

BP Studentship* in the Department of Earth Sciences of the University of Oxford Tectonic evolution of the Parnaiba cratonic basin, NE Brazil  

E-Print Network (OSTI)

of the Parnaiba cratonic basin, NE Brazil Supervisors: Prof. A. B. Watts and Dr. M. Daly (BP) * Subject to funding structure and petroleum play. The focus will be on the Parnaiba basin in NE Brazil, one of the world in Brazil and the UK, will involve the acquisition of seismic reflection and refraction profile data along

198

Using MiniBooNE neutral current elastic cross section results to constrain 3+1 sterile neutrino models  

E-Print Network (OSTI)

The MiniBooNE Neutral Current Elastic (NCEL) cross section results are used to extract limits in the $\\Delta m^{2}-\\sin^{2}\\vartheta_{\\mu s}$ plane for a 3+1 sterile neutrino model with a mass splitting $0.1 \\leq \\Delta m^{2} \\leq 10.0$ eV$^{2}$. GENIE is used with a cross section model close to the one employed by MiniBooNE to make event rate predictions using simulations on the MiniBooNE target material CH$_{2}$. The axial mass is a free parameter in all fits. Sterile modifications to the flux and changes to the cross section in the simulation relate the two and allow limits to be set on sterile neutrino mixing using cross section results. The large axial mass problem makes it necessary for experiments to perform their own axial mass fits, but a prior fit to the same dataset could mask a sterile oscillation signal. Results are given with and without a penalty term on the axial mass from a prior fit. We find that a simultaneous fit to the axial mass and the sterile neutrino parameters favours very high axial mass values. The general problems that the current uncertainty on charged-current quasi-elastic (CCQE) cross sections at MiniBooNE energies pose for sterile neutrino measurements are discussed.

Callum Wilkinson; Susan Cartwright; Lee Thompson

2013-09-04T23:59:59.000Z

199

Measurements of nuclear $?$-ray line emission in interactions of protons and $?$ particles with N, O, Ne and Si  

E-Print Network (OSTI)

$\\gamma$-ray production cross sections have been measured in proton irradiations of N, Ne and Si and $\\alpha$-particle irradiations of N and Ne. In the same experiment we extracted also line shapes for strong $\\gamma$-ray lines of $^{16}$O produced in proton and $\\alpha$-particle irradiations of O. For the measurements gas targets were used for N, O and Ne and a thick foil was used for Si. All targets were of natural isotopic composition. Beams in the energy range up to 26 MeV for protons and 39 MeV for $\\alpha$-particles have been delivered by the IPN-Orsay tandem accelerator. The $\\gamma$ rays have been detected with four HP-Ge detectors in the angular range 30$^{\\circ}$ to 135$^{\\circ}$. We extracted 36 cross section excitation functions for proton reactions and 14 for $\\alpha$-particle reactions. For the majority of the excitation functions no other data exist to our knowledge. Where comparison with existing data was possible usually a very good agreement was found. It is shown that these data are very interesting for constraining nuclear reaction models. In particular the agreement of cross section calculations in the nuclear reaction code TALYS with the measured data could be improved by adjusting the coupling schemes of collective levels in the target nuclei $^{14}$N, $^{20,22}$Ne and $^{28}$Si. The importance of these results for the modeling of nuclear $\\gamma$-ray line emission in astrophysical sites is discussed.

H. Benhabiles-Mezhoud; J. Kiener; J. -P. Thibaud; V. Tatischeff; I. Deloncle; A. Coc; J. Duprat; C. Hamadache; A. Lefebvre-Schuhl; J. -C. Dalouzy; F. De Grancey; F. De Oliveira; F. Dayras; N. De Srville; M. -G. Pellegriti; L. Lamia; S. Ouichaoui

2010-11-11T23:59:59.000Z

200

First Direct Measurement of the 17F(p,gamma)18Ne Cross Section  

SciTech Connect

The rate of the 17F(p,gamma)18Ne reaction is of significant importance in astrophysical events like novae and x-ray bursts. A previous 17F(p,p)17F measurement identified the 3+ state in 18Ne predicted to dominate the rate above 0.2 GK at a center of mass energy of 599.8 keV, but the resonance strength for proton capture was unknown. We have directly measured the 17F(p,gamma)18Ne reaction with the Daresbury Recoil Separator, using a mixed beam of radioactive 17F and stable 17O from the HRIBF at ORNL. The resonance strength for the 599.8 keV resonance in 18Ne was found to be = 33 14(stat) 17(sys) meV, corresponding to a width of = 56 24(stat) 30(sys) meV. Additionally, an upper limit on the direct capture S factor of S(E) < 65 keV b was determined at an intermediate energy of 800 keV.

Chipps, K. [Colorado School of Mines, Golden; Bardayan, Daniel W [ORNL; Blackmon, Jeff C [ORNL; Chae, K. Y. [University of Tennessee, Knoxville (UTK); Greife, U. [Colorado School of Mines, Golden; Hatarik, Robert [Rutgers University; Kozub, R. L. [Tennessee Technological University; Matei, Catalin [Oak Ridge Associated Universities (ORAU); Moazen, Brian [University of Tennessee, Knoxville (UTK); Nesaraja, Caroline D [ORNL; Pain, Steven D [ORNL; Peters, W. A. [Rutgers University; Pittman, S. T. [University of Tennessee, Knoxville (UTK); ShrinerJr., J. F. [Tennessee Technological University; Smith, Michael Scott [ORNL

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ne sd mn" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Thermoelectric figure of merit of LSCoO-Mn perovskites  

Science Conference Proceedings (OSTI)

Oxide ceramics with nominal composition of La"0"."8Sr"0"."2Co"1"-"xMn"xO"3(0= Keywords: 72.20.Pa, 84.60.Bk, 84.60.Rb, 85.80.Fi, LSCoO compounds, Thermoelectric figure of merit, Thermoelectric materials

J. E. Rodrguez; D. Cadavid; L. C. Moreno

2008-11-01T23:59:59.000Z

202

Clarification of enhanced ferromagnetism in Be-codoped InMnP fabricated using Mn/InP:Be bilayers grown by molecular beam epitaxy  

Science Conference Proceedings (OSTI)

The p-type InMnP:Be epilayers were prepared by the sequential growth of Mn/InP:Be bilayers using molecular-beam-epitaxy and the subsequent in-situ annealing at 200-300 deg. C. In triple-axis x-ray diffraction patterns, the samples revealed a shoulder peak indicative of intrinsic InMnP. The ferromagnetic transition in InMnP:Be was observed to occur at the elevated temperature of {approx}140 K, and the ferromagnetic spin-domains clearly appeared in magnetic force microscopy images. The improved ferromagnetic properties are attributed to the increased p-d hybridation due to high p-type conductivity of InMnP:Be (p {approx} 10{sup 20 }cm{sup -3}). The results suggest that enhanced ferromagnetism can be effectively obtained from Be-codoped InMnP.

Shon, Yoon; Lee, Sejoon; Taek Yoon, Im; Jeon, H. C.; Lee, D. J.; Kang, T. W. [Quantum-functional Semiconductor Research Center, Dongguk University-Seoul, Seoul 100-715 (Korea, Republic of); Song, J. D. [Center for Spintronics Research, Korea Institute of Science and Technology, Seoul 136-791 (Korea, Republic of); Yoon, Chong S. [Department of Materials Science and Engineering, Hanyang University, Seoul 133-791 (Korea, Republic of); Kim, D. Y. [Department of Semiconductor Science, Dongguk University-Seoul, Seoul 100-715 (Korea, Republic of); Park, C. S. [School of Electrical Engineering, Korea University, Anam-dong, Seongbuk-gu, Seoul 136-713 (Korea, Republic of)

2011-11-07T23:59:59.000Z

203

The Mn effect on magnetic structure of FeMn-B amorphous metals , D.M.C. Nicholson2  

E-Print Network (OSTI)

usually less than 1mm in thickness, because fast cooling rate is (~ 106 °K/sec) required for retaining] for a historical summary on the discovery of bulk amorphous metals.) They have been proposed for a range in transformers and electrical motors. Lately, high Mn content, Fe-based bulk amorphous metals have been

Widom, Michael

204

Plutonium Oxidation and Subsequent Reduction by Mn (IV) Minerals  

Science Conference Proceedings (OSTI)

Plutonium sorbed to rock tuff was preferentially associated with manganese oxides. On tuff and synthetic pyrolusite (Mn{sup IV}O{sub 2}), Pu(IV) or Pu(V) was initially oxidized, but over time Pu(IV) became the predominant oxidation state of sorbed Pu. Reduction of Pu(V/VI), even on non-oxidizing surfaces, is proposed to result from a lower Gibbs free energy of the hydrolyzed Pu(IV) surface species versus that of the Pu(V) or Pu(VI) surface species. This work suggests that despite initial oxidation of sorbed Pu by oxidizing surfaces to more soluble forms, the less mobile form of Pu, Pu(IV), will dominate Pu solid phase speciation during long term geologic storage. The safe design of a radioactive waste or spent nuclear fuel geologic repository requires a risk assessment of radionuclides that may potentially be released into the surrounding environment. Geochemical knowledge of the radionuclide and the surrounding environment is required for predicting subsurface fate and transport. Although difficult even in simple systems, this task grows increasingly complicated for constituents, like Pu, that exhibit complex environmental chemistries. The environmental behavior of Pu can be influenced by complexation, precipitation, adsorption, colloid formation, and oxidation/reduction (redox) reactions (1-3). To predict the environmental mobility of Pu, the most important of these factors is Pu oxidation state. This is because Pu(IV) is generally 2 to 3 orders of magnitude less mobile than Pu(V) in most environments (4). Further complicating matters, Pu commonly exists simultaneously in several oxidation states (5, 6). Choppin (7) reported Pu may exist as Pu(IV), Pu(V), or Pu(VI) oxic natural groundwaters. It is generally accepted that plutonium associated with suspended particulate matter is predominantly Pu(IV) (8-10), whereas Pu in the aqueous phase is predominantly Pu(V) (2, 11-13). The influence of the character of Mn-containing minerals expected to be found in subsurface repository environments on Pu oxidation state distributions has been the subject of much recent research. Kenney-Kennicutt and Morse (14), Duff et al. (15), and Morgenstern and Choppin (16) observed oxidation of Pu facilitated by Mn(IV)-bearing minerals. Conversely, Shaughnessy et al. (17) used X-ray Absorption near-edge spectroscopy (XANES) to show reduction of Pu(VI) by hausmannite (Mn{sup II}Mn{sub 2}{sup III}O{sub 4}) and manganite ({gamma}-Mn{sup III}OOH) and Kersting et al., (18) observed reduction of Pu(VI) by pyrolusite (Mn{sup IV}O{sub 2}). In this paper, we attempt to reconcile the apparently conflicting datasets by showing that Mn-bearing minerals can indeed oxidize Pu, however, if the oxidized species remains on the solid phase, the oxidation step competes with the formation of Pu(IV) that becomes the predominant solid phase Pu species with time. The experimental approach we took was to conduct longer term (approximately two years later) oxidation state analyses on the Pu sorbed to Yucca Mountain tuff (initial analysis reported by Duff et al., (15)) and measure the time-dependant changes in the oxidation state distribution of Pu in the presence of the Mn mineral pyrolusite.

KAPLAN, DANIEL

2005-09-13T23:59:59.000Z

205

Demonstration Assessment of LED Roadway Lighting: NE Cully Boulevard Portland, OR  

Science Conference Proceedings (OSTI)

A new roadway lighting demonstration project was initiated in late 2010, which was planned in conjunction with other upgrades to NE Cully Boulevard, a residential collector road in the northeast area of Portland, OR. With the NE Cully Boulevard project, the Portland Bureau of Transportation hoped to demonstrate different light source technologies and different luminaires side-by-side. This report documents the initial performance of six different newly installed luminaires, including three LED products, one induction product, one ceramic metal halide product, and one high-pressure sodium (HPS) product that represented the baseline solution. It includes reported, calculated, and measured performance; evaluates the economic feasibility of each of the alternative luminaires; and documents user feedback collected from a group of local Illuminating Engineering Society (IES) members that toured the site. This report does not contain any long-term performance evaluations or laboratory measurements of luminaire performance. Although not all of the installed products performed equally, the alternative luminaires generally offered higher efficacy, more appropriate luminous intensity distributions, and favorable color quality when compared to the baseline HPS luminaire. However, some products did not provide sufficient illumination to all areasvehicular drive lanes, bicycle lanes, and sidewalksor would likely fail to meet design criteria over the life of the installation due to expected depreciation in lumen output. While the overall performance of the alternative luminaires was generally better than the baseline HPS luminaire, cost remains a significant barrier to widespread adoption. Based on the cost of the small quantity of luminaires purchased for this demonstration, the shortest calculated payback period for one of the alternative luminaire types was 17.3 years. The luminaire prices were notably higher than typical prices for currently available luminaires purchased in larger quantities. At prices that are more typical, the payback would be less than 10 years. In addition to the demonstration luminaires, a networked control system was installed for additional evaluation and demonstration purposes. The capability of control system to measure luminaire input power was explored in this study. A more exhaustive demonstration and evaluation of the control system will be the subject of future GATEWAY report(s).

Royer, Michael P.; Poplawski, Michael E.; Tuenge, Jason R.

2012-06-29T23:59:59.000Z

206

Fine structure collision strengths and line ratios for [Ne V] in infrared and optical sources  

E-Print Network (OSTI)

Improved collisions strengths for the mid-infrared and optical transitions in Ne V are presented. Breit-Pauli R-Matrix calculations for electron impact excitation are carried out with fully resolved near-threshold resonances at very low energies. In particular, the fine structure lines at 14 micron and 24 micron due to transitions among the ground state levels 1s^22s^22p^3 (^3P_{0,1,2}), and the optical/near-UV lines at 2973, 3346 and 3426 Angstrom transitions among the ^3P_{0,1,2}, ^1D_2, ^1S_0 levels are described. Maxwellian averaged collision strengths are tabulated for all forbidden transistion within the ground configuration. Significant differences are found in the low temperature range Te < 10000 K for both the FIR and the opitcal transitions compared to previous results. An analysis of the 14/24 line ratio in low-energy-density (LED) plasma conditions reveals considerable variation; the effective rate coefficient may be dominated by the very low-energy behaviour rather than the maxwellian averaged...

Dance, Michael; Nahar, Sultana N; Pradhan, Anil K

2013-01-01T23:59:59.000Z

207

Particle decay branching ratios for states of astrophysical importance in 19Ne  

E-Print Network (OSTI)

We have measured proton and alpha-particle branching ratios of excited states in 19Ne formed using the 19F(3He,t) reaction at a beam energy of 25 MeV. These ratios have a large impact on the astrophysical reaction rates of 15O(alpha,gamma), 18F(p,gamma) and 18F(p,alpha), which are of interest in understanding energy generation in x-ray bursts and in interpreting anticipated gamma-ray observations of novae. We detect decay protons and alpha-particles using a silicon detector array in coincidence with tritons measured in the focal plane detector of our Enge split-pole spectrograph. The silicon array consists of five strip detectors of the type used in the Louvain-Edinburgh Detector Array, subtending angles from 130 degrees to 165 degrees with approximately 14% lab efficiency. The correlation angular distributions give additional confidence in some prior spin-parity assignments that were based on gamma branchings. We measure Gamma_p/Gamma=0.387+-0.016 for the 665 keV proton resonance, which agrees well with the direct measurement of Bardayan et al.

D. W. Visser; J. A. Caggiano; R. Lewis; W. B. Handler; A. Parikh; P. D. Parker

2003-08-08T23:59:59.000Z

208

Color transparency after the NE18 and E665 experiments: Outllok and perspectives at CEBAF  

E-Print Network (OSTI)

CEBAF is a high-luminocity factory of virtual photons with variable virtuality $Q^{2}$ and transverse size. This makes CEBAF, in particular after the energy upgrade to (8-12)GeV, an ideal facility for uncovering new phenomena, and opening new windows, at the interface of the perturbative and nonperturbative QCD. We discuss color transparency as the case for a broad program on electroproduction of vector mesons $\\rho^{0},\\,\\omega^{0},\\,\\phi^{0}$ and their radial excitations $\\rho',\\,\\omega',\\,\\phi'$ at CEBAF. We also comment on the second generation of experiments on color transparency in $^{4}He(e,e'p)$ scattering, which are also feasible at CEBAF. In 1994, we can make more reliable projections into future because our understanding of the onset of color transparency has greatly been augmented by two experiments completed in 1993:\\\\ i) no effect of CT was seen in the SLAC NE18 experiment on $A(e,e'p)$ scattering at virtualities of the exchanged photon $Q^{2} \\lsim 7$ GeV$^{2}$, \\\\ ii) strong signal of CT was observed in the FNAL E665 experiment on exclusive $\\rho^{0}$- meson production in deep inelastic scattering in the same range of $Q^{2}$. \\\\ We discuss the impact of these observations on the CEBAF experimental program. We argue they both are good news, both were anticipated theoretically, and both rule in the correct QCD mechanism of the onset of CT.

J. Nemchik; N. N. Nikolaev; B. G. Zakharov

1994-06-06T23:59:59.000Z

209

An intensity-modulated dual-wavelength He-Ne laser for remote sensing of methane  

SciTech Connect

The differential absorption laser radar for methane sensing detects a leakage of methane gas by emitting into the atmosphere the light of a wavelength absorbable by methane, receiving the light returning after being reflected or scattered on a road or wall surface, etc., and measuring the light intensity lost during the travel. This methane detection system is highly practicable as it makes an instantaneous remote detection possible. The authors have developed a new He-Ne laser that could be used as the light source for the above system. This device emits a two-wavelength laser beam (one wavelength absorbable by methane and the other not absorbable by methane but used for referential purposes) from a single plasma tube, and there is no possibility of the axes of the two-wavelength component deviating from each other. Further, using this laser, they have developed a vehicle-mounted type differential absorption laser radar system which has successfully detected low density methane leakage while the vehicle was moving.

Ueki, T.; Tanaka, H.; Uehara, K.

1988-01-01T23:59:59.000Z

210

Controlling the nonlinear intracavity dynamics of large He-Ne laser gyroscopes  

E-Print Network (OSTI)

A model based on Lamb's theory of gas lasers is applied to a He-Ne ring laser gyroscope in order to estimate and remove the laser dynamics contribution from the rotation measurements. The intensities of the counter-propagating laser beams exiting one cavity mirror are continuously observed together with a monitor of the laser population inversion. These observables, once properly calibrated with a dedicated procedure, allow us to estimate cold cavity and active medium parameters driving the main part of the nonlinearities of the system. The parameters identification and noise subtraction procedure has been verified by means of a Monte Carlo study of the system, and experimentally tested on the G-Pisa ring laser oriented with the normal to the ring plane almost parallel to the Earth rotation axis. In this configuration the Earth rotation-rate provides the maximum Sagnac effect while the contribution of the orientation error is reduced at minimum. After the subtraction of laser dynamics by a Kalman filter, the ...

Cuccato, Davide; Belfi, Jacopo; Beverini, Nicol; Ortolan, Antonello; Di Virgilio, Angela

2013-01-01T23:59:59.000Z

211

A Measurement of the Neutrino Neutral Current Pi0 Cross Section at MiniBooNE  

SciTech Connect

The MiniBooNE neutrino beam and detector at Fermilab are used to study the production of neutral current {pi}{sup 0} events. The cross sections for neutrino interactions with mineral oil (CH{sub 2}) are reported for resonantly produced and coherently produced single {pi}{sup 0} events. We measure a resonant single {pi}{sup 0} cross section of {sigma}({nu}{sub {mu}} N {pi}{sup 0}) = (0.0129 {+-} 0.0011(stat.) {+-} 0.0043(syst.)) x 10{sup -36} cm{sup 2}/CH{sub 2} at a mean neutrino energy of 1.26 GeV. We measure a coherent single {pi}{sup 0} cross section of {sigma}({nu}{sub {mu}} A {yields} {nu}{sub {mu}} A {pi}{sup 0}) = (0.00077 {+-} 0.00016 (stat.) {+-} 0.00036 (syst.)) x 10{sup -36} cm{sup 2}/CH{sub 2} at mean neutrino energy 1.12 GeV.

Raaf, Jennifer Lynne; /Cincinnati U.

2005-05-01T23:59:59.000Z

212

Electrodeposited Mn-Co Alloy Coating For SOFC Interconnects  

NLE Websites -- All DOE Office Websites (Extended Search)

Electrodeposited Electrodeposited Mn-Co Alloy Coating For SOFC Interconnects H. McCrabb * , T. Hall * , J. Wu # , H. Zhang # , X. Liu # , E.J. Taylor * * Faraday Technology Inc., 315 Huls Dr., Clayton, OH 45315, USA # West Virginia University, Dept. of Mechanical and Aerospace Eng.ESB, Morgantown, WV, 26506, USA Overall Objective Overall Objective Principal Investigator: Heather McCrabb, Company Name: Faraday Technology, Inc., Address: 315 Huls Drive, Clayton, OH 45315, Phone: 937-836-7749, E-mail: heathermccrabb@faradaytechnology.com, Company website: faradaytechnology.com Previous Work at WVU Results Develop an inexpensive manufacturing process for depositing (Mn,Co) 3 O 4 spinel coatings onto SOFC interconnects. Introduction The decrease in the SOFC operating temperatures from 1000°C to between 650 and 850°C has enabled the use of chromia-forming ferritic stainless steels as interconnects

213

Charge transport properties of CdMnTe radiation detectors  

Science Conference Proceedings (OSTI)

Growth, fabrication and characterization of indium-doped cadmium manganese telluride (CdMnTe)radiation detectors have been described. Alpha-particle spectroscopy measurements and time resolved current transient measurements have yielded an average charge collection efficiency approaching 100 %. Spatially resolved charge collection efficiency maps have been produced for a range of detector bias voltages. Inhomogeneities in the charge transport of the CdMnTe crystals have been associated with chains of tellurium inclusions within the detector bulk. Further, it has been shown that the role of tellurium inclusions in degrading chargecollection is reduced with increasing values of bias voltage. The electron transit time was determined from time of flight measurements. From the dependence of drift velocity on applied electric field the electron mobility was found to be n = (718 55) cm2/Vs at room temperature.

Kim K.; Rafiel, R.; Boardman, M.; Reinhard, I.; Sarbutt, A.; Watt, G.; Watt, C.; Uxa, S.; Prokopovich, D.A.; Belas, E.; Bolotnikov, A.E.; James, R.B.

2012-04-11T23:59:59.000Z

214

High-Resolution Mn EXAFS of the Oxygen-Evolving Complex inPhotosystem II: Structural Implications for the Mn4Ca Cluster  

DOE Green Energy (OSTI)

The biological generation of oxygen by the oxygen-evolving complex in photosystem II (PS II) is one of natures most important reactions. The recent X-ray crystal structures, while limited by resolutions of 3.2 to 3.5 A, have located the electron density associated with the Mn4Ca complex within the multi-protein PS II complex. Detailed structures critically depend on input from spectroscopic techniques such as EXAFS and EPR/ENDOR, as the XRD resolution does not allow for accurate determination of the position of Mn/Ca or the bridging and terminal ligand atoms. The number and distances of Mn-Mn/Ca/ligand interactions determined from EXAFS provide important constraints for the structure of the Mn cluster. Here we present data from a high-resolution EXAFS method using a novel multi-crystal monochromator that show three short Mn-Mn distances between 2.7 and 2.8 A and hence the presence of three di-mu-oxobridged units in the Mn4Ca cluster. This result imposes clear limitations on the proposed structures based on spectroscopic and diffraction data and provides input for refining such structures.

Yano, Junko; Pushkar, Yulia; Glatzel, Pieter; Lewis, Azul; Sauer,Kenneth; Messinger, Johannes; Bergmann, Uwe; Yachandra, Vittal

2005-09-06T23:59:59.000Z

215

High Level Requirements for the Nuclear Energy -- Knowledge Base for Advanced Modeling and Simulation (NE-KAMS)  

Science Conference Proceedings (OSTI)

The US Department of Energy, Office of Nuclear Energy (DOE-NE), has been tasked with the important mission of ensuring that nuclear energy remains a compelling and viable energy source in the U.S. The motivations behind this mission include cost-effectively meeting the expected increases in the power needs of the country, reducing carbon emissions and reducing dependence on foreign energy sources. In the near term, to ensure that nuclear power remains a key element of U.S. energy strategy and portfolio, the DOE-NE will be working with the nuclear industry to support safe and efficient operations of existing nuclear power plants. In the long term, to meet the increasing energy needs of the U.S., the DOE-NE will be investing in research and development (R&D) and working in concert with the nuclear industry to build and deploy new, safer and more efficient nuclear power plants. The safe and efficient operations of existing nuclear power plants and designing, licensing and deploying new reactor designs, however, will require focused R&D programs as well as the extensive use and leveraging of advanced modeling and simulation (M&S). M&S will play a key role in ensuring safe and efficient operations of existing and new nuclear reactors. The DOE-NE has been actively developing and promoting the use of advanced M&S in reactor design and analysis through its R&D programs, e.g., the Nuclear Energy Advanced Modeling and Simulation (NEAMS) and Consortium for Advanced Simulation of Light Water Reactors (CASL) programs. Also, nuclear reactor vendors are already using CFD and CSM, for design, analysis, and licensing. However, these M&S tools cannot be used with confidence for nuclear reactor applications unless accompanied and supported by verification and validation (V&V) and uncertainty quantification (UQ) processes and procedures which provide quantitative measures of uncertainty for specific applications. The Nuclear Energy Knowledge base for Advanced Modeling and Simulation (NE-KAMS) is being developed at the Idaho National Laboratory in conjunction with Bettis Laboratory, Sandia National Laboratories, Argonne National Laboratory, Utah State University and others with the objective of establishing a comprehensive and web-accessible knowledge base that will provide technical services and resources for V&V and UQ of M&S in nuclear energy sciences and engineering. The knowledge base will serve as an important resource for technical exchange and collaboration that will enable credible and reliable computational models and simulations for application to nuclear reactor design, analysis and licensing. NE-KAMS will serve as a valuable resource for the nuclear industry, academia, the national laboratories, the U.S. Nuclear Regulatory Commission (NRC) and the public and will help ensure the safe, economical and reliable operation of existing and future nuclear reactors. From its inception, NE-KAMS will directly support nuclear energy research, development and demonstration programs within the U.S. Department of Energy (DOE), including the CASL, NEAMS, Light Water Reactor Sustainability (LWRS), Small Modular Reactors (SMR), and Next Generation Nuclear Power Plant (NGNP) programs. These programs all involve M&S of nuclear reactor systems, components and processes, and it is envisioned that NE-KAMS will help to coordinate and facilitate collaboration and sharing of resources and expertise for V&V and UQ across these programs.

Rich Johnson; Hyung Lee; Kimberlyn C. Mousseau

2011-09-01T23:59:59.000Z

216

The Search for Meterorites with Complex Exposure Histories Amoung Ordinary Chondrites with Low 3HE/21NE Ratios  

DOE Green Energy (OSTI)

In calculating cosmic-ray exposure ages of meteorites it is generally assumed that the meteoroids were expelled from a shielded position within their parent body and then experienced a single stage exposure before colliding with Earth. The combination of noble gas and radionuclide measurements in several large meteorites, such as Jilin and Bur Ghelaui, have revealed complex exposure histories: i.e. an initial exposure on the surface of an asteroid (or within meter-sized meteoroid), followed by a second exposure as a smaller object. In fact, orbital dynamics calculations predicted that at least 30% of the meteorites arriving on Earth experienced two- or multiple-stage exposure histories [1]. More recently, after the recognition that the Yarkovsky effect plays an important role in delivering meteorites from the asteroid belt to Earth-crossing orbits, it was confirmed that complex exposure histories should be common [2]. Nevertheless, despite the ability to measure a wide range of radionuclides with accelerator mass spectrometry (AMS), only a few meteorites with complex exposure histories have been identified [e.g. 3,4]. The question is whether the relatively paucity of complex exposure histories is real or have we simply overlooked complex-exposure histories. In this work we focus on meteorites with low {sup 3}He/{sup 21}Ne ratios, since it is known that most meteorites with complex exposure histories have relatively low {sup 3}He/{sup 21}Ne ratios, i.e. the {sup 3}He/{sup 21}Ne ratio is below the ''Bern-line''. Several hypotheses have been suggested for these low {sup 3}He/{sup 21}Ne ratios, including solar heating in low-perihelion orbits, shock-related diffusion of He during the collision that ejected the meteoroid, or an artifact of high shielding conditions [4]. The first two hypotheses seem to be supported by low radiogenic {sup 4}He concentrations in samples with low {sup 3}He, whereas Monte Carlo calculations have shown that some of the low {sup 3}He/{sup 21}Ne ratios may be due to high shielding conditions in objects with radii > 1m [5]. To elucidate these issues, we selected 15 samples with known noble gas concentrations [6] for radionuclide studies and obtained aliquots of the samples adjacent to those measured for noble gases. The specific goal is the identification of complex exposure histories among samples having low {sup 3}He/{sup 21}Ne ratios. All samples have {sup 3}He deficiencies of >20% relative to the ''Bern-line'' (Table 1). Most of the selected samples also have low {sup 22}Ne/{sup 21}Ne ratios ({le}1.1), indicative of high shielding during most of their cosmic-ray exposure (Table 1), whereas one sample (Suizhou) was selected because of its relatively low {sup 81}Kr concentration [7]. In addition, we selected QUE 93021, for which initial radionuclide results suggested a short exposure age. Here we present cosmogenic {sup 10}Be, {sup 26}Al and {sup 36}Cl in stone and metal fractions for the 16 ordinary chondrites listed in Table 1.

Welton, K C; Nishiizumi, K; Caffee, M W

2001-04-30T23:59:59.000Z

217

A measurement of the neutral current neutrino-nucleon elastic cross section at MiniBooNE  

SciTech Connect

The neutral current neutrino-nucleon elastic interaction {nu} N {yields} {nu} N is a fundamental process of the weak interaction ideally suited for characterizing the structure of the nucleon neutral weak current. This process comprises {approx}18% of neutrino events in the neutrino oscillation experiment, MiniBooNE, ranking it as the experiment's third largest process. Using {approx}10% of MiniBooNE's available neutrino data, a sample of these events were identified and analyzed to determine the differential cross section as a function of the momentum transfer of the interaction, Q{sup 2}. This is the first measurement of a differential cross section with MiniBooNE data. From this analysis, a value for the nucleon axial mass M{sub A} was extracted to be 1.34 {+-} 0.25 GeV consistent with previous measurements. The integrated cross section for the Q{sup 2} range 0.189 {yields} 1.13 GeV{sup 2} was calculated to be (8.8 {+-} 0.6(stat) {+-} 0.2(syst)) x 10{sup -40} cm{sup 2}.

Cox, David Christopher; /Indiana U.

2008-02-01T23:59:59.000Z

218

Structural and magnetic properties of MnAs nanoclusters formed by Mn ion implantation in GaAs  

SciTech Connect

Ferromagnetic (FM) nanostructures embedded in semiconductors are of fundamental interest since their physical properties could be used in new devices such as memories, sensors or spintronics. In this work, we present results obtained on the synthesis and characterization of nanosized MnAs ferromagnets buried in GaAs. These nanocrystals are formed either by single Mn implantation or Mn + As co-implantation at room temperature into GaAs wafers at 141 and 180 keV respectively. Two doses, 1 x 10{sup 16} and 2 x 10{sup 16} ions {center_dot} cm{sup -2} for each impurity, are tested. Pieces of the wafers are then annealed by RTA or classical furnace annealing at various temperatures under N{sub 2} atmosphere for increasing times. HRTEM and diffraction analysis show that under such conditions MnAs precipitates form with a regular hexagonal structure, the 3m orientation-relationship of precipitates with respect to the matrix offers the most energetically stable configuration. Size distributions are systematically extracted from statistical analysis of ''2 beam'' TEM images. The precipitate mean diameters of nanocrystals populations range from 9 to 13 nm depending on the annealing conditions. Magnetization measurements by SQUID magnetometry on the same samples reveal a progressive transition from a superparamagnetic behavior at room temperature to an FM one at 2K, reflecting a distribution of blocking temperature, due to distribution of size and to dipolar interactions. Curie temperatures in the range of 360K were measured.

Serres, A.; Benassayag, G.; Respaud, M.; Armand, C.; Pesant, J.C.; Mari, A.; Liliental-Weber, Z.; Claverie, A.

2002-08-01T23:59:59.000Z

219

Effect of a high electric field on the conductivity of MnGa{sub 2}S{sub 4}, MnIn{sub 2}S{sub 4}, and MnGaInS{sub 4} single crystals  

Science Conference Proceedings (OSTI)

The results of studying the effect of a high electric field on the conductivity of MnGa{sub 2}S{sub 4}, MnIn{sub 2}S{sub 4}, and MnGaInS{sub 4} single crystals are reported. The activation energy is determined in high and low electric fields. It is established that the decrease in the activation energy with increasing the external voltage is associated with decreasing the depth of the potential well, in which the electron is located.

Niftiev, N. N. [Azerbaijan State Pedagogical University (Azerbaijan); Tagiev, O. B. [National Academy of Sciences of Azerbaijan, Institute of Physics (Azerbaijan)

2009-09-15T23:59:59.000Z

220

Microsoft Word - figure_8.doc  

Gasoline and Diesel Fuel Update (EIA)

T I D O R W Y ND SD C A N V U T CO NE KS A Z NM OK TX MN WI MI IA I L IN OH MO AR M S AL GA T N KY FL SC NC WV MD DE VA PA NJ NY CT RI MA VT NH ME LA HI A K J a p a n Mexico M e x...

Note: This page contains sample records for the topic "ne sd mn" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Determination of the {sup 22}Ne{sub nucl}/{sup 4}He{sub rad} ratio in natural uranium-rich fluorite by mass spectrometry  

Science Conference Proceedings (OSTI)

A determination by noble gas mass spectrometry of {sup 22}Ne production through the combined reactions {sup 19}F({alpha},n){sup 22}Na({beta}{sup +}){sup 22}Ne and {sup 19}F({alpha},p){sup 22}Ne on natural calcium fluoride is made for the first time. Six samples of U-rich fluorite from a fluorspar deposit in Mexico were used to determine the {sup 22}Ne{sub nucl}/{sup 4}He{sub rad} ratio generated by the spontaneous decay of U during the last 32 Ma. The obtained ratio (1.33 {+-} 0.11) x10{sup -5} (95% confidence), is compared to other experimental data on natural uranium oxides and theoretical values.

Sole, Jesus; Pi, Teresa [Instituto de Geologia, Universidad Nacional Autonoma de Mexico, Cd. Universitaria, Coyoacan, 04510 Mexico D.F. (Mexico)

2006-10-15T23:59:59.000Z

222

Ga{sub 1-x}Mn{sub x}N epitaxial films with high magnetization  

Science Conference Proceedings (OSTI)

We report on the fabrication of pseudomorphic wurtzite Ga{sub 1-x}Mn{sub x}N grown on GaN with Mn concentrations up to 10% using molecular beam epitaxy. According to Rutherford backscattering, the Mn ions are mainly at the Ga-substitutional positions, and they are homogeneously distributed according to depth-resolved Auger-electron spectroscopy and secondary-ion mass-spectroscopy measurements. A random Mn distribution is indicated by transmission electron microscopy, and no Mn-rich clusters are present for optimized growth conditions. A linear increase of the c-lattice parameter with increasing Mn concentration is found using x-ray diffraction. The ferromagnetic behavior is confirmed by superconducting quantum-interference measurements showing saturation magnetizations of up to 150 emu/cm{sup 3}.

Kunert, G.; Kruse, C.; Figge, S.; Hommel, D. [Semiconductor Epitaxy, Institute of Solid State Physics, University of Bremen, D-28359 Bremen (Germany); Dobkowska, S.; Jakiela, R.; Stefanowicz, W.; Sawicki, M. [Institute of Physics, Polish Academy of Science, PL-02-668 Warszawa (Poland); Li, Tian; Bonanni, A. [Institute for Semiconductor and Solid State Physics, Johannes Kepler University Linz, A 4040 Linz (Austria); Reuther, H.; Grenzer, J.; Borany, J. von [Helmholtz-Zentrum Dresden-Rossendorf, Institute of Ion Beam Physics and Materials Research, Bautzner Landstrasse 400, 01328 Dresden (Germany); Dietl, T. [Institute of Physics, Polish Academy of Science, PL-02-668 Warszawa (Poland); Institute of Theoretical Physics, Faculty of Physics, University of Warsaw, PL-00-681 Warszawa (Poland)

2012-07-09T23:59:59.000Z

223

Investigation of structure, magnetic, and transport properties of Mn-doped SiC films  

SciTech Connect

Mn-doped SiC films were fabricated by radio frequency magnetron sputtering technique. The structure, composition, and magnetic and transport properties of the films were investigated. The results show the films have the 3C-SiC crystal structure and the doped Mn atoms in the form of Mn{sup 2+} ions substitute for C sites in SiC lattice. All the films are ferromagnetic at 300 K, and the ferromagnetism in films arises from the doped Mn atoms and some extended defects. In addition, the saturation magnetization increases with the Mn-doped concentration increasing. The Mn doping does not change the semiconductor characteristics of the SiC films.

Sun Xianke [School of Material Science and Engineering, Tianjin University, Tianjin 300172 (China); Tianjin Key Laboratory for Photoelectric Materials and Devices, Tianjin University of Technology, Tianjin 300384 (China); Guo Ruisong [School of Material Science and Engineering, Tianjin University, Tianjin 300172 (China); An Yukai [Tianjin Key Laboratory for Photoelectric Materials and Devices, Tianjin University of Technology, Tianjin 300384 (China); School of Material Science and Engineering, Tianjin University of Technology, Tianjin 300384 (China); Liu Jiwen [School of Material Science and Engineering, Tianjin University, Tianjin 300172 (China); Tianjin Key Laboratory for Photoelectric Materials and Devices, Tianjin University of Technology, Tianjin 300384 (China); School of Material Science and Engineering, Tianjin University of Technology, Tianjin 300384 (China)

2013-07-15T23:59:59.000Z

224

Electronic Structure and Oxidation State Changes in the Mn (4) Ca Cluster of Photosystem II  

Science Conference Proceedings (OSTI)

Oxygen-evolving complex (Mn{sub 4}Ca cluster) of Photosystem II cycles through five intermediate states (S{sub i}-states, i = 0-4) before a molecule of dioxygen is released. During the S-state transitions, electrons are extracted from the OEC, either from Mn or alternatively from a Mn ligand. The oxidation state of Mn is widely accepted as Mn{sub 4}(III{sub 2},IV{sub 2}) and Mn{sub 4}(III,IV{sub 3}) for S{sub 1} and S{sub 2} states, while it is still controversial for the S{sub 0} and S{sub 3} states. We used resonant inelastic X-ray scattering (RIXS) to study the electronic structure of Mn{sub 4}Ca complex in the OEC. The RIXS data yield two-dimensional plots that provide a significant advantage by obtaining both K-edge pre-edge and L-edge-like spectra (metal spin state) simultaneously. We have collected data from PSII samples in the each of the S-states and compared them with data from various inorganic Mn complexes. The spectral changes in the Mn 1s2p{sub 3/2} RIXS spectra between the S-states were compared to those of the oxides of Mn and coordination complexes. The results indicate strong covalency for the electronic configuration in the OEC, and we conclude that the electron is transferred from a strongly delocalized orbital, compared to those in Mn oxides or coordination complexes. The magnitude for the S{sub 0} to S{sub 1}, and S{sub 1} to S{sub 2} transitions is twice as large as that during the S{sub 2} to S{sub 3} transition, indicating that the electron for this transition is extracted from a highly delocalized orbital with little change in charge density at the Mn atoms.

Yano, J.; Pushkar, Y.; Messinger, J.; Bergmann, U.; Glatzel, P.; Yachandra, V.K.; /SLAC

2012-08-17T23:59:59.000Z

225

Distinct local electronic structure and magnetism for Mn in amorphous Si and Ge  

SciTech Connect

Transition metals such as Mn generally have large local moments in covalent semiconductors due to their partially filled d shells. However, Mn magnetization in group-IV semiconductors is more complicated than often recognized. Here we report a striking crossover from a quenched Mn moment (<0.1 {mu}{sub B}) in amorphous Si (a-Si) to a large distinct local Mn moment ({ge}3{mu}{sub B}) in amorphous Ge (a-Ge) over a wide range of Mn concentrations (0.005-0.20). Corresponding differences are observed in d-shell electronic structure and the sign of the Hall effect. Density-functional-theory calculations show distinct local structures, consistent with different atomic density measured for a-Si and a-Ge, respectively, and the Mn coordination number N{sub c} is found to be the key factor. Despite the amorphous structure, Mn in a-Si is in a relatively well-defined high coordination interstitial type site with broadened d bands, low moment, and electron (n-type) carriers, while Mn in a-Ge is in a low coordination substitutional type site with large local moment and holes (p-type) carriers. Moreover, the correlation between N{sub c} and the magnitude of the local moment is essentially independent of the matrix; the local Mn moments approach zero when N{sub c} > 7 for both a-Si and a-Ge.

Zeng, Li; Cao, J. X.; Helgren, E.; Karel, J.; Arenholz, E.; Ouyang, Lu; Smith, David J.; Wu, R. Q.; Hellman, F.

2010-06-01T23:59:59.000Z

226

Investigation of Structural Stability of Monolayer MnO 2 Sheet under ...  

Science Conference Proceedings (OSTI)

Presentation Title, Investigation of Structural Stability of Monolayer MnO2 Sheet under Electron Beam Irradiation. Author(s), Yong Wang, Chenghua Sun, Jin Zou ...

227

Ion-exchanged MnO2 nanoparticles as cathodes of lithium ion ...  

Science Conference Proceedings (OSTI)

Presentation Title, Ion-exchanged MnO2 nanoparticles as cathodes of lithium ion batteries at elevated temperatures. Author(s), Dawei Liu, Jasper Wright, Wei...

228

F-8: Modeling of Mn-Ni-Si-Cu Precipitation in Reactor Pressure ...  

Science Conference Proceedings (OSTI)

Presentation Title, F-8: Modeling of Mn-Ni-Si-Cu Precipitation in Reactor .... Steels 316 and Comparison with the Rate Theory Model of a Multicomponent System.

229

Ageing and Toughness of a Mn-Ni-Mo PWR Steel  

Science Conference Proceedings (OSTI)

Abstract Scope, Mn-Ni-Mo steels are widely used in the fabrication of pressurisers, steam generators and pressure vessels of pressurised water reactors (PWR).

230

Optimization of Na 0.44 MnO 2 Cathode Material - Programmaster.org  

Science Conference Proceedings (OSTI)

Symposium, Energy Storage: Materials, Systems, and Applications. Presentation Title, Optimization of Na0.44MnO2 Cathode Material for Use in Aqueous...

231

Low-energy structure of 61Mn populated following $\\beta$ decay of 61Cr  

E-Print Network (OSTI)

$\\beta$ decay of the $^{61}$Cr$_{37}$ ground state has been studied. A new half-life of 233 +/- 11 ms has been deduced, and seven delayed $\\gamma$ rays have been assigned to the daughter, $^{61}$Mn$_{36}$. The low-energy level structure of $^{61}$Mn$_{36}$ is similar to that of the less neutron-rich $^{57,59}$Mn nuclei. The odd-A $_{25}$Mn isotopes follow the systematic trend in the yrast states of the even-even, Z + 1 $_{26}$Fe isotopes, and not that of the Z - 1 $_{24}$Cr isotopes, where a possible onset of collectivity has been suggested to occur already at N = 36.

Crawford, H L; Berryman, J S; Broda, R; Fornal, B; Hoffman, C R; Hoteling, N; Janssens, R V F; Lenzi, S M; Pereira, J; Stoker, J B; Tabor, S L; Walters, W B; Wang, X; Zhu, S

2009-01-01T23:59:59.000Z

232

Low-energy structure of 61Mn populated following $?$ decay of 61Cr  

E-Print Network (OSTI)

$\\beta$ decay of the $^{61}$Cr$_{37}$ ground state has been studied. A new half-life of 233 +/- 11 ms has been deduced, and seven delayed $\\gamma$ rays have been assigned to the daughter, $^{61}$Mn$_{36}$. The low-energy level structure of $^{61}$Mn$_{36}$ is similar to that of the less neutron-rich $^{57,59}$Mn nuclei. The odd-A $_{25}$Mn isotopes follow the systematic trend in the yrast states of the even-even, Z + 1 $_{26}$Fe isotopes, and not that of the Z - 1 $_{24}$Cr isotopes, where a possible onset of collectivity has been suggested to occur already at N = 36.

H. L. Crawford; P. F. Mantica; J. S. Berryman; R. Broda; B. Fornal; C. R. Hoffman; N. Hoteling; R. V. F. Janssens; S. M. Lenzi; J. Pereira; J. B. Stoker; S. L. Tabor; W. B. Walters; X. Wang; S. Zhu

2009-04-29T23:59:59.000Z

233

Giant tunneling magnetoresistance in Co{sub 2}MnSi/Al-O/Co{sub 2}MnSi magnetic tunnel junctions  

SciTech Connect

Magnetic tunnel junctions (MTJs) with a stacking structure of Co{sub 2}MnSi/Al-O/Co{sub 2}MnSi were fabricated using magnetron sputtering system. Fabricated MTJ exhibited an extremely large tunneling magnetoresistance (TMR) ratio of 570% at low temperature, which is the highest TMR ratio reported to date for an amorphous Al-O tunneling barrier. The observed dependence of tunneling conductance on bias voltage clearly reveals the half-metallic energy gap of Co{sub 2}MnSi. The origins of large temperature dependence of TMR ratio were discussed on the basis of the present results.

Sakuraba, Y.; Hattori, M.; Oogane, M.; Ando, Y.; Kato, H.; Sakuma, A.; Miyazaki, T.; Kubota, H. [Department of Applied Physics, Graduate School of Engineering, Tohoku University, Aoba-yama 6-6-05, Aramaki, Aoba-ku, Sendai 980-8579 (Japan); Nanoelectronics Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba 305-8568 (Japan)

2006-05-08T23:59:59.000Z

234

Large energy absorption in Ni-Mn-Ga/polymer composites  

SciTech Connect

Ferromagnetic shape memory alloys can respond to a magnetic field or applied stress by the motion of twin boundaries and hence they show large hysteresis or energy loss. Ni-Mn-Ga particles made by spark erosion have been dispersed and oriented in a polymer matrix to form pseudo 3:1 composites which are studied under applied stress. Loss ratios have been determined from the stress-strain data. The loss ratios of the composites range from 63% to 67% compared to only about 17% for the pure, unfilled polymer samples.

Feuchtwanger, Jorge; Richard, Marc L.; Tang, Yun J.; Berkowitz, Ami E.; O'Handley, Robert C.; Allen, Samuel M. [Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States); University of California, San Diego, La Joya, California 92093 (United States); Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)

2005-05-15T23:59:59.000Z

235

Measurement of the reaction O-17(?,n)Ne-20 and its impact on the s process in massive stars  

E-Print Network (OSTI)

The ratio between the rates of the reactions O-17(\\alpha,n)Ne-20 and O-17(\\alpha,\\gamma)Ne-21 determines whether O-16 is an efficient neutron poison for the s process in massive stars, or if most of the neutrons captured by O-16(n,\\gamma) are recycled into the stellar environment. This ratio is of particular relevance to constrain the s process yields of fast rotating massive stars at low metallicity. Recent results on the (\\alpha,\\gamma) channel have made it necessary to measure the (\\alpha,n) reaction more precisely and investigate the effect of the new data on s process nucleosynthesis in massive stars. We present a new measurement of the O-17(\\alpha, n) reaction using a moderating neutron detector. In addition, the (\\alpha, n_1) channel has been measured independently by observation of the characteristic 1633 keV \\gamma-transition in Ne-20. The reaction cross section was determined with a simultaneous R-matrix fit to both channels. (\\alpha,n) and (\\alpha, \\gamma) resonance strengths of states lying below the covered energy range were estimated using their known properties from the literature. A new O-17(\\alpha,n) reaction rate was deduced for the temperature range 0.1 GK to 10 GK. It was found that in He burning conditions the (\\alpha,\\gamma) channel is strong enough to compete with the neutron channel. This leads to a less efficient neutron recycling compared to a previous suggestion of a very weak (\\alpha,\\gamma) channel. S process calculations using our rates confirm that massive rotating stars do play a significant role in the production of elements up to Sr, but they strongly reduce the s process contribution to heavier elements.

A. Best; M. Beard; J. Grres; M. Couder; R. deBoer; S. Falahat; R. T. Gray; A. Kontos; K. -L. Kratz; P. J. LeBlanc; Q. Li; S. O'Brien; N. zkan; M. Pignatari; K. Sonnabend; R. Talwar; W. Tan; E. Uberseder; M. Wiescher

2013-04-23T23:59:59.000Z

236

Specific DNA cleavage mediated by [SalenMn(III)][sup +  

Science Conference Proceedings (OSTI)

The combination of [SalenMn(III)][sup +] and a terminal oxidant affords efficient and specific cleavage of right-handed double-helical DNA in regions rich in A:T base pairs. Metal complexes of the tetradentate chelating ligands Salen (Salen = N,N[prime]-ethylenebis(salicylideneaminato)) have been part of the inorganic chemistry literature for several decades. The cationic manganese(III) complex [SalenMn(III)][sup +] (1) is an efficient catalyst for the epoxidation of olefins with terminal oxidants such as iodosylbenzene. 1 also catalyzes oxidative C-H bond activation. The flat, crescent shape of 1, its aromatic and cationic nature, and its ability to catalyze hydrocarbon oxidation are features shared in whole or in part by metal complexes which bind to DNA and cleave it via oxidative processes. These similarities prompted the authors to evaluate the DNA-cleaving properties of 1, and they now report that 1 mediates specific cleavage of right-handed double-helical DNA in a reaction requiring a terminal oxidant. 20 refs., 3 figs., 1 tab.

Gravert, D.J.; Griffin, J.H. (Stanford Univ., CA (United States))

1993-02-12T23:59:59.000Z

237

Element-specific study of the temperature dependent magnetization of Co-Mn-Sb thin films  

SciTech Connect

Magnetron sputtered thin Co-Mn-Sb films were investigated with respect to their element-specific magnetic properties. Stoichiometric Co{sub 1}Mn{sub 1}Sb{sub 1} crystallized in the C1{sub b} structure has been predicted to be half-metallic and is therefore of interest for spintronics applications. It should show a characteristic antiferromagnetic coupling of the Mn and Co magnetic moments and a transition temperature T{sub C} of about 480K. Although the observed transition temperature of our 20nm thick Co{sub 32.4}Mn{sub 33.7}Sb{sub 33.8}, Co{sub 37.7}Mn{sub 34.1}Sb{sub 28.2} and Co{sub 43.2}Mn{sub 32.6}Sb{sub 24.2} films is in quite good agreement with the expected value, we found a ferromagnetic coupling of the Mn and Co magnetic moments which indicates that the films do not crystallize in the C1{sub b} structure and are probably not fully spin-polarized. The ratio of the Co and Mn moments does not change up to the transition temperature and the temperature dependence of the magnetic moments can be well described by the mean field theory.

Schmalhorst, J.; Ebke, D.; Meinert, M.; Thomas, A.; Reiss, G.; Arenholz, E.

2008-09-30T23:59:59.000Z

238

Synthesis and Characterization of MnO2-Based Mixed Oxides as Supercapacitors  

E-Print Network (OSTI)

Synthesis and Characterization of MnO2-Based Mixed Oxides as Supercapacitors Hansung Kim. Available electronically January 28, 2003. The development of a high-power-density supercapacitor made to develop supercapacitors based on non-noble oxides.13 Hydrous manganese oxide (a-MnO2 · nH2O

Popov, Branko N.

239

Cation Effects on the Layer Structure of Biogenic Mn-Oxides  

E-Print Network (OSTI)

Radiation Lightsource (SSRL). Wet sample slurries were placed in an aluminum sample cell with Lexan windows-bs (Samuel Webb, SSRL). Two Mn-oxide references, triclinic birnessite (TcBir) and -MnO2 were synthesized and Environmental and Quality (ISEQ) Graduate Fellowship. M.Z. also thanks Dr. Samuel Webb at SSRL for his help

Sparks, Donald L.

240

[Characterization of lignin and Mn peroxidases from Phanerochaete chrysosporium]. Progress report  

DOE Green Energy (OSTI)

Lignin peroxidases were investigated with respect to enzyme kinetics and NMR spectroscopy of the heme domain. MN peroxidases were studied with respect to the role of oxalate in enzyme activity, the NMR spectroscopy of the heme domain. Gene expression of both lignin and MN peroxidases were examined as well as expression of site-directed mutants aimed at scale up production of these enzymes.

Not Available

1992-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "ne sd mn" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Dietary resveratrol administration increases MnSOD expression and activity in mouse brain  

E-Print Network (OSTI)

SOD protein level (140%) and activity (75%). The increase in MnSOD was not due to a substantial proliferationDietary resveratrol administration increases MnSOD expression and activity in mouse brain Ellen L oxidative stress. In vitro studies have shown an increase in antioxidant enzyme activities following

Stuart, Jeffrey A.

242

Electric-Field Modulation of Curie Temperature in (Ga, Mn)As Field-Effect Transistor Structures with Varying Channel Thickness and Mn Compositions  

SciTech Connect

We have investigated the change of T{sub C} of ferromagnetic semiconductor (Ga, Mn)As by changing hole concentration p. The field effect transistor structure was utilized to change p. The relation T{sub C}propor top{sup 0.2} is obtained for three samples, despite the difference of their Mn composition and thickness, indicating that the relation holds over 2 decades of p.

Nishitani, Y.; Endo, M. [Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577 (Japan); Chiba, D. [Semiconductor Spintronics Project, Exploratory Research for Advanced Technology, Japan Science and Technology Agency, Sanban-cho 5, Chiyoda-ku, Tokyo 102-0075 (Japan); Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577 (Japan); Matsukura, F.; Ohno, H. [Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577 (Japan); Semiconductor Spintronics Project, Exploratory Research for Advanced Technology, Japan Science and Technology Agency, Sanban-cho 5, Chiyoda-ku, Tokyo 102-0075 (Japan)

2010-01-04T23:59:59.000Z

243

Estudo das propriedades termomecnicas da liga cu 78,3% - al 9,8% mn 11,9%.  

E-Print Network (OSTI)

??The alloys Cu 78,3% - Al 9,8% - Mn 11,9 and 77.5% Cu - Al 9.8% - Mn 11,9% -% Nb 0.5 - 0.3% Ni (more)

Rafael Evaristo Calute

2012-01-01T23:59:59.000Z

244

Scanning tunneling microscopy reveals LiMnAs is a room temperature anti-ferromagnetic semiconductor  

SciTech Connect

We performed scanning tunneling microscopy and spectroscopy on a LiMnAs(001) thin film epitaxially grown on an InAs(001) substrate by molecular beam epitaxy. While the in situ cleavage exposed only the InAs(110) non-polar planes, the cleavage continued into the LiMnAs thin layer across several facets. We combined both topography and current mappings to confirm that the facets correspond to LiMnAs. By spectroscopy we show that LiMnAs has a band gap. The band gap evidenced in this study, combined with the known Neel temperature well above room temperature, confirms that LiMnAs is a promising candidate for exploring the concepts of high temperature semiconductor spintronics based on antiferromagnets.

Wijnheijmer, A. P.; Koenraad, P. M. [COBRA Inter-University Research Institute, Department of Applied Physics, Eindhoven University of Technology, P. O. Box 513, NL-5600 MB Eindhoven (Netherlands); Marti, X. [Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 3, 121 16 Prague 2 (Czech Republic); Institute of Physics ASCR, v.v.i., Cukrovarnicka 10, 162 53 Prague 6 (Czech Republic); Holy, V. [Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 3, 121 16 Prague 2 (Czech Republic); Cukr, M.; Novak, V. [Institute of Physics ASCR, v.v.i., Cukrovarnicka 10, 162 53 Prague 6 (Czech Republic); Jungwirth, T. [Institute of Physics ASCR, v.v.i., Cukrovarnicka 10, 162 53 Prague 6 (Czech Republic); School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD (United Kingdom)

2012-03-12T23:59:59.000Z

245

Improvement of Thermal Stability of Li-Ion Batteries by Polymer Coating of LiMn2O4  

E-Print Network (OSTI)

lithium-ion battery by arresting the Mn + dissolution, thereby increasing the battery stability. Key Words: Lithium Battery, Cathode,

Stroeve, Pieter; Vidu, Ruxandra

2004-01-01T23:59:59.000Z

246

Manganese trends in a sample of thin and thick disk stars. The origin of Mn  

E-Print Network (OSTI)

CONTEXT: Manganese is an iron-peak element and although the nucleosynthesis path that leads to its formation is fairly well understood, it remains unclear which objects, SN II and/or SN Ia, that contribute the majority of Mn to the interstellar medium. It also remains unclear to which extent the supernovae Mn yields depend on the metallicity of the progenitor star or not. AIMS: By using a well studied and well defined sample of 95 dwarf stars we aim at further constraining the formation site(s) of Mn. METHODS: We derive Mn abundances through spectral synthesis of four Mn I lines at 539.4, 549.2, 601.3, and 601.6 nm. Stellar parameters and data for oxygen are taken from Bensby et al. (2003, 2004, 2005). RESULTS: When comparing our Mn abundances with O abundances for the same stars we find that the abundance trends in the stars with kinematics of the thick disk can be explained by metallicity dependent yields from SN II. We go on and combine our data for dwarf stars in the disks with data for dwarf and giant stars in the metal-poor thick disk and halo from the literature. We find that dwarf and giant stars show the same trends, which indicates that neither non-LTE nor evolutionary effects are a major concern for Mn. Furthermore, the [Mn/O] vs [O/H] trend in the halo is flat. CONCLUSIONS: We conclude that the simplest interpretation of our data is that Mn is most likely produced in SN II and that the Mn yields for such SNae must be metallicity dependent. Contribution from SN Ia in the metal-rich thin disk can not, however, be excluded.

S. Feltzing; M. Fohlman; T. Bensby

2007-03-19T23:59:59.000Z

247

A Measurement of the muon neutrino charged current quasielastic interaction and a test of Lorentz violation with the MiniBooNE experiment  

SciTech Connect

The Mini-Booster neutrino experiment (MiniBooNE) at Fermi National Accelerator Laboratory (Fermilab) is designed to search for {nu}{sub {mu}} {yields} {nu}{sub e} appearance neutrino oscillations. Muon neutrino charged-current quasi-elastic (CCQE) interactions ({nu}{sub {mu}} + n {yields} {mu} + p) make up roughly 40% of our data sample, and it is used to constrain the background and cross sections for the oscillation analysis. Using high-statistics MiniBooNE CCQE data, the muon-neutrino CCQE cross section is measured. The nuclear model is tuned precisely using the MiniBooNE data. The measured total cross section is {sigma} = (1.058 {+-} 0.003 (stat) {+-} 0.111 (syst)) x 10{sup -38} cm{sup 2} at the MiniBooNE muon neutrino beam energy (700-800 MeV). {nu}{sub e} appearance candidate data is also used to search for Lorentz violation. Lorentz symmetry is one of the most fundamental symmetries in modern physics. Neutrino oscillations offer a new method to test it. We found that the MiniBooNE result is not well-described using Lorentz violation, however further investigation is required for a more conclusive result.

Katori, Teppei; /Indiana U.

2008-12-01T23:59:59.000Z

248

The Uncertainties in the 22Ne + alpha-capture Reaction Rates and the Production of the Heavy Magnesium Isotopes in Asymptotic Giant Branch Stars of Intermediate Mass  

E-Print Network (OSTI)

We present new rates for the 22Ne(alpha, n)25Mg and 22Ne(alpha,gamma)26Mg reactions, with uncertainties that have been considerably reduced compared to previous estimates, and we study how these new rates affect the production of the heavy magnesium isotopes in models of intermediate mass Asymptotic Giant Branch (AGB) stars of different initial compositions. All the models have deep third dredge-up, hot bottom burning and mass loss. Calculations have been performed using the two most commonly used estimates of the 22Ne + alpha rates as well as the new recommended rates, and with combinations of their upper and lower limits. The main result of the present study is that with the new rates, uncertainties on the production of isotopes from Mg to P coming from the 22Ne + alpha-capture rates have been considerably reduced. We have therefore removed one of the important sources of uncertainty to effect models of AGB stars. We have studied the effects of varying the mass-loss rate on nucleosynthesis and discuss other uncertainties related to the physics employed in the computation of stellar structure, such as the modeling of convection, the inclusion of a partial mixing zone and the definition of convective borders. These uncertainties are found to be much larger than those coming from 22Ne + alpha-capture rates, when using our new estimates. Much effort is needed to improve the situation for AGB models.

A. Karakas; M. Lugaro; M. Wiescher; J. Goerres; C. Ugalde

2006-01-27T23:59:59.000Z

249

Measuring the speed of light using beating longitudinal modes in an open-cavity HeNe laser  

E-Print Network (OSTI)

We describe an undergraduate laboratory that combines an accurate measurement of the speed of light, a fundamental investigation of a basic laser system, and a nontrivial use of statistical analysis. Students grapple with the existence of longitudinal modes in a laser cavity as they change the cavity length of an adjustable-cavity HeNe laser and tune the cavity to produce lasing in the TEM$_{00}$ mode. For appropriate laser cavity lengths, the laser gain curve of a HeNe laser allows simultaneous operation of multiple longitudinal modes. The difference frequency between the modes is measured using a self-heterodyne detection with a diode photodetector and a radio frequency spectrum analyzer. Asymmetric effects due to frequency pushing and frequency pulling, as well as transverse modes, are minimized by simultaneously monitoring and adjusting the mode structure as viewed with a Fabry-Perot interferometer. The frequency spacing of longitudinal modes is proportional to the inverse of the cavity length with a prop...

D'Orazio, Daniel J; Schultz, Justin T; Sidor, Daniel; Best, Micheal; Goodfellow, Kenneth; Scholten, Robert E; White, James D; 10.1119/1.3299281

2010-01-01T23:59:59.000Z

250

Low temperature hydrothermally synthesized nanocrystalline orthorhombic LiMnO2 cathode material for lithium-ion cells  

Science Conference Proceedings (OSTI)

Nanocrystalline orthorhombic LiMnO2 particles with an average particle size of about 35 nm in diameter were successfully synthesized by a hydrothermal process at 160-180 C from trimanganese tetroxide (Mn3O4) prepared ... Keywords: hydrothermal process, lithium ion battery, nanocrystalline, orthorhombic LiMnO2, solvothermal process

Mengqiang Wu; Ai Chen; Rongqing Xu; Yue Li

2003-05-01T23:59:59.000Z

251

A rational self-sacrificing template route to LiMn2O4nanotubes and nanowires  

Science Conference Proceedings (OSTI)

Single-crystalline LiMn2O4 nanotubes and nanowires have been synthesized via a low-temperature molten salt synthesis method, using the prepared ?-MnO2 nanotubes and ?-MnO2 nanowires as the precursors ...

Baojun Yang; Xinsong Yuan; Duoli Chai

2011-01-01T23:59:59.000Z

252

9432 Alamo Ct NE, Blaine, MN 55449 (612) 625-0519(O) (505) 270-0316(C) dagao2008@gmail.com http://www-users.cs.umn.edu/dagao  

E-Print Network (OSTI)

and developed the test suite for the Culgi multiscale modeling software using Tcl/Tk and C++ #12;Idaho National

Minnesota, University of

253

Recrystallization behavior of a supersaturated Al Mn alloy  

SciTech Connect

The effect of concurrent precipitation on recrystallization behavior during the isothermal annealing of a supersaturated and deformed Al-Mn alloy was investigated. It is found that concurrent precipitation strongly affects the recrystallization behavior of this alloy. At low temperatures, concurrent precipitation retards recrystallization and results in large flat grains. The size of recrystallized grains decreases significantly with increasing temperature. The kinetics of recrystallization was determined by measurements of hardness. The JMAK exponent decreases from 3.0 to 0.8 as the annealing temperature increases from 371 C to 427 C. The activation energy for recrystallization of the alloy is about 456 kJ/mol. Concurrent precipitation enhances the activation energy for recrystallization of aluminum alloys.

Radhakrishnan, Balasubramaniam [ORNL; Liu, W C [Yanshan University

2010-01-01T23:59:59.000Z

254

Metalloantibiotic Mn(II)-bacitracin complex mimicking manganese superoxide dismutase  

SciTech Connect

Superoxide dismutase (SOD) activities of various metallobacitracin complexes were evaluated using the riboflavin-methionine-nitro blue tetrazolium assay. The radical scavenging activity of various metallobacitracin complexes was shown to be higher than those of the negative controls, e.g., free transition metal ions and metal-free bacitracin. The SOD activity of the complex was found to be in the order of Mn(II) > Cu(II) > Co(II) > Ni(II). Furthermore, the effect of bacitracin and their complexation to metals on various microorganisms was assessed by antibiotic susceptibility testing. Moreover, molecular modeling and quantum chemical calculation of the metallobacitracin complex was performed to evaluate the correlation of electrostatic charge of transition metal ions on the SOD activity.

Piacham, Theeraphon [Department of Clinical Microbiology, Faculty of Medical Technology, Mahidol University, Bangkok 10700 (Thailand); Pure and Applied Biochemistry, Chemical Center, Lund University, P.O. Box 124, 22100 Lund (Sweden); Isarankura-Na-Ayudhya, Chartchalerm [Department of Clinical Microbiology, Faculty of Medical Technology, Mahidol University, Bangkok 10700 (Thailand); Nantasenamat, Chanin [Department of Clinical Microbiology, Faculty of Medical Technology, Mahidol University, Bangkok 10700 (Thailand); Yainoy, Sakda [Department of Clinical Microbiology, Faculty of Medical Technology, Mahidol University, Bangkok 10700 (Thailand); Ye Lei [Pure and Applied Biochemistry, Chemical Center, Lund University, P.O. Box 124, 22100 Lund (Sweden); Buelow, Leif [Pure and Applied Biochemistry, Chemical Center, Lund University, P.O. Box 124, 22100 Lund (Sweden); Prachayasittikul, Virapong [Department of Clinical Microbiology, Faculty of Medical Technology, Mahidol University, Bangkok 10700 (Thailand)]. E-mail: mtvpr@mucc.mahidol.ac.th

2006-03-24T23:59:59.000Z

255

Interfacial studies of a thin-film Li2Mn4O9 electrode  

NLE Websites -- All DOE Office Websites (Extended Search)

Interfacial studies of a thin-film Li2Mn4O9 electrode Interfacial studies of a thin-film Li2Mn4O9 electrode Title Interfacial studies of a thin-film Li2Mn4O9 electrode Publication Type Journal Article Year of Publication 1999 Authors Kostecki, Robert, Fanping Kong, Yoshiaki Matsuo, and Frank R. McLarnon Journal Electrochimica Acta Volume 45 Pagination 225-233 Keywords interfacial films, manganese oxide electrode Abstract A thin-film spinel Li2Mn4O9 electrode was prepared by spin coating onto a Pt substrate. Spectroscopic ellipsometry, X-ray diffraction and current-sensing atomic force microscopy (CSAFM) were used to characterize interfacial processes and film formation at this electrode in the presence of 1.0 M LiPF6, EC:DMC (1:1 by volume) electrolyte. Prolonged exposure of the film to the electrolyte at ambient temperature resulted in spontaneous decomposition of the spinel to λ-MnO2 without disruption of the original structure. The surface of the resulting λ-MnO2 film exhibited no significant change in morphology, however a thin passive electrode surface layer was detected by the CSAFM probe. This electrode surface layer exhibited insulating properties and most likely contained Li2O, a by-product of Li2Mn4O9 decomposition.

256

Ferromagnetism in Mn-Implanted Epitaxially Grown Ge on Si(100)  

SciTech Connect

We have studied ferromagnetism of Mn-implanted epitaxial Ge films on silicon. The Ge films were grown by ultrahigh vacuum chemical vapor deposition using a mixture of germane (GeH{sub 4}) and methylgermane (CH{sub 3}GeH{sub 3}) gases with a carbon concentration of less than 1 at. %, and observed surface rms roughness of 0.5 nm, as measured by atomic force microscopy. Manganese ions were implanted in epitaxial Ge films grown on Si (100) wafers to an effective concentration of 16, 12, 6, and 2 at. %. Superconducting quantum interference device measurements showed that only the three highest Mn concentration samples are ferromagnetic, while the fourth sample, with [Mn] = 2 at. %, is paramagnetic. X-ray absorption spectroscopy and x-ray magnetic circular dichroism measurements indicate that localized Mn moments are ferromagnetically coupled below the Curie temperature. Isothermal annealing of Mn-implanted Ge films with [Mn] = 16 at. % at 300 C for up to 1200 s decreases the magnetization but does not change the Curie temperature, suggesting that the amount of the magnetic phase slowly decreases with time at this anneal temperature. Furthermore, transmission electron microscopy and synchrotron grazing incidence x-ray diffraction experiments show that the Mn-implanted region is amorphous, and we believe that it is this phase that is responsible for the ferromagnetism. This is supported by our observation that high-temperature annealing leads to recrystallization and transformation of the material into a paramagnetic phase.

Guchhait, S.; Jamil, M.; Ohldag, H.; Mehta, A.; Arenholz, E.; Lian, G.; Li Fatou, A.; Ferrer, D. A.; Markert, J. T.; Colombo, L.; Banerjee, S. K.

2011-01-05T23:59:59.000Z

257

Energy Transfer Dynamics and Dopant Luminescence in Mn-Doped CdS/ZnS Core/Shell Nanocrystals  

E-Print Network (OSTI)

Mn-doped II-VI semiconductor nanocrystals exhibit bright dopant photoluminescence that has potential usefulness for light emitting devices, temperature sensing, and biological imaging. The bright luminescence comes from the 4T1?6A1 transition of the Mn2+ d electrons after the exciton-dopant energy transfer, which reroutes the exciton relaxation through trapping processes. The driving force of the energy transfer is the strong exchange coupling between the exciton and Mn2+ due to the confinement of exciton in the nanocrystal. The exciton-Mn spatial overlap affecting the exchange coupling strength is an important parameter that varies the energy transfer rate and the quantum yield of Mn luminescence. In this dissertation, this correlation is studied in radial doping location-controlled Mn-doped CdS/ZnS nanocrystals. Energy transfer rate was found decreasing when increasing the doping radius in the nanocrystals at the same core size and shell thickness and when increasing the size of the nanocrystals at a fixed doping radius. In addition to the exciton-Mn energy transfer discussed above, two consecutive exciton-Mn energy transfers can also occur if multiple excitons are generated before the relaxation of Mn (lifetime ~10^-4 - 10^-2 s). The consecutive exciton-Mn energy transfer can further excite the Mn2+ d electrons high in conduction band and results in the quenching of Mn luminescence. The highly excited electrons show higher photocatalytic efficiency than the electrons in undoped nanocrystals. Finally, the effect of local lattice strain on the local vibrational frequency and local thermal expansion was observed via the temperature-dependent Mn luminescence spectral linewidth and peak position in Mn-doped CdS/ZnS nanocrystals. The local lattice strain on the Mn2+ ions is varied using the large core/shell lattice mismatch (~7%) that creates a gradient of lattice strain at various radial locations. When doping the Mn2+ closer to the core/shell interface, the stronger lattice strain softens the vibrational frequency coupled to the 4T1?6A1 transition of Mn2+ (Mn luminescence) by ~50%. In addition, the lattice strain also increases the anharmonicity, resulting in larger local thermal expansion observed from the nearly an order larger thermal shift of the Mn luminescence compared to the Mn-doped ZnS nanocrystals without the core/shell lattice mismatch.

Chen, Hsiang-Yun

2012-12-01T23:59:59.000Z

258

Direct Total Cross Section Measurement of the 16O(?,?)20Ne Reaction at Ec.m. = 2.26 MeV  

Science Conference Proceedings (OSTI)

In stellar helium burning, (16)O represents the endpoint of the helium-burning sequence due to the low rate of (16)O(alpha,gamma)(20)Ne. We present a new direct measurement of the total capture reaction rate of (16)O(alpha,gamma)(20)Ne at E(c.m.) = 2.26MeV employing the DRAGON recoil separator. For the first time, the total S factor and its contributing direct capture transitions could be determined in one experiment.

Hager, Ulrike; Brown, James R.; Buchmann, Lothar R.; Carmona-Gallardo, Mariano; Erikson, Luke E.; Fallis, Jennifer S.; Greife, Uwe; Hutcheon, Dave; Ottewell, Dave; Ruiz, Chris; Sjue, Sky; Vockenhuber, Cristof

2011-08-23T23:59:59.000Z

259

Ni spin switching induced by magnetic frustration in FeMn/Ni/Cu(001)  

SciTech Connect

Epitaxially grown FeMn/Ni/Cu(001) films are investigated by Photoemission Electron Microscopy and Magneto-Optic Kerr Effect. We find that as the FeMn overlayer changes from paramagnetic to antiferromagnetic state, it could switch the ferromagnetic Ni spin direction from out-of-plane to in-plane direction of the film. This phenomenon reveals a new mechanism of creating magnetic anisotropy and is attributed to the out-of-plane spin frustration at the FeMn-Ni interface.

Wu, J.; Choi, J.; Scholl, A.; Doran, A.; Arenholz, E.; Hwang, Chanyong; Qiu, Z. Q.

2009-03-08T23:59:59.000Z

260

Quantum Anomalous Hall Effect in Hg_1-yMn_yTe Quantum Wells  

SciTech Connect

The quantum Hall effect is usually observed when the two-dimensional electron gas is subjected to an external magnetic field, so that their quantum states form Landau levels. In this work we predict that a new phenomenon, the quantum anomalous Hall effect, can be realized in Hg{sub 1-y}Mn{sub y}Te quantum wells, without the external magnetic field and the associated Landau levels. This effect arises purely from the spin polarization of the Mn atoms, and the quantized Hall conductance is predicted for a range of quantum well thickness and the concentration of the Mn atoms. This effect enables dissipationless charge current in spintronics devices.

Liu, Chao-Xing; /Tsinghua U., Beijing /Stanford U., Phys. Dept.; Qi, Xiao-Liang; /Stanford U., Phys. Dept.; Dai, Xi; Fang, Zhong; /Beijing, Inst. Phys.; Zhang, Shou-Cheng; /Stanford U., Phys. Dept.

2010-03-19T23:59:59.000Z

Note: This page contains sample records for the topic "ne sd mn" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Demonstration of molecular beam epitaxy and a semiconducting band structure for I-Mn-V compounds  

SciTech Connect

Our ab initio theory calculations predict a semiconducting band structure of I-Mn-V compounds. We demonstrate on LiMnAs that high-quality materials with group-I alkali metals in the crystal structure can be grown by molecular beam epitaxy. Optical measurements on the LiMnAs epilayers are consistent with the theoretical electronic structure. Our calculations also reproduce earlier reports of high antiferromagnetic ordering temperature and predict large, spin-orbit-coupling-induced magnetic anisotropy effects. We propose a strategy for employing antiferromagnetic semiconductors in high-temperature semiconductor spintronics.

Jungwirth, T. [Institute of Physics ASCR, v.v.i., Cukrovarnicka 10, 162 53 Praha 6 (Czech Republic); School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD (United Kingdom); Novak, V.; Cukr, M.; Zemek, J. [Institute of Physics ASCR, v.v.i., Cukrovarnicka 10, 162 53 Praha 6 (Czech Republic); Marti, X.; Horodyska, P.; Nemec, P.; Holy, V. [Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 3, 121 16 Prague 2 (Czech Republic); Maca, F.; Shick, A. B.; Masek, J.; Kuzel, P. [Institute of Physics ASCR, v.v.i., Na Slovance 2, 182 21 Praha 8 (Czech Republic); Nemec, I. [Faculty of Science, Charles University in Prague, Hlavova 2030, 128 40 Prague 2 (Czech Republic); Gallagher, B. L.; Campion, R. P.; Foxon, C. T. [School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD (United Kingdom); Wunderlich, J. [Institute of Physics ASCR, v.v.i., Cukrovarnicka 10, 162 53 Praha 6 (Czech Republic); Hitachi Cambridge Laboratory, Cambridge CB3 0HE (United Kingdom)

2011-01-15T23:59:59.000Z

262

Anomalous Stoichiometry Layered Structure and Magnetic Ordering of the Prussian Blue Analog [NEt4]2MnII3(CN)8  

Science Conference Proceedings (OSTI)

Atypical of Prussian blue structured materials, Mn{sup II} and [NEt{sub 4}]CN react to form [NEt{sub 4}]{sub 2}Mn{sub 3}(CN){sub 8} possessing layers of octahedral [Mn{sup II}(CN){sub 6}]{sup 4-} bonded to two high-spin tetrahedral Mn{sup II} sites.

J Her; P Stephens; C Kareis; J Moore; J Miller

2011-12-31T23:59:59.000Z

263

35 COFibE, Series A. U. S. ATOXIC ENERGY CCMMISSION r'C Cj NE# YORK OPERATIONS OFFICE  

Office of Legacy Management (LM)

COFibE, Series A. COFibE, Series A. - U. S. ATOXIC ENERGY CCMMISSION r'C Cj NE# YORK OPERATIONS OFFICE HEkLTH AND SAFETY DIVISION (Merril Eicsnbud, Dirsator) MONTHLY REPORT OF FIELD ACTIVITIES (This report%v,rs%~~~nth period) Indusorial Ii~iene Branoh m a . . 0 . . c . . . o W. B. Harris, Chief Radiation Branch . y y e 0e . e . e . . . . e . . . Hanson Blatz, Chief Fi:e and Accident Branch D e a o o . . . ..s . . B. J. Kehoe, Chief Medical Advioer, Dr. J. A. Quiglsy Siometrician, Dr. A. E. Brandt TABLF OF COEpTmS PRODUCTION COWTRACTORS ._ Feed Nabrlals Production Centor '$iiddlcsexSampling Plnnt Harshaw ChuoicalCompa~ Wlin&rodt Chen!icrl Works tie. Ontario Storage Area b Vit*o Mnufacturing CompaW B4ikhem Steel F'lrnt - IpcknuMnr Clifton Roducts CompvIy Drush Bcx@.Uun~ Company - Luckcy

264

REP&V TO ATTNJF: NE-23 SUWECC Commercial Facilities Used by National Lead Company of Ohio in Support  

Office of Legacy Management (LM)

REP&V TO REP&V TO ATTNJF: NE-23 SUWECC Commercial Facilities Used by National Lead Company of Ohio in Support 'of FMPC Operations TO: Robert E. Lynch Procuresnent and CorXracts Division, AD-42 Oak Ridge Operations Office The Division of Facility and Site Decormnissioning Projects (DFSP) is responsible for managing the Department's Formerly Utilized Sites Remedial Action Program (FUSRAP). The purposes of FUSRAP are (1) to identify facilities formerly operated for or by the Manhattan Engineer District (NED) and Atomic Energy Commission (AEC) which may have been radioactively contaminated as a result of these operations, (2) to determine if the facilities require remedial action, and (3) where DOE has authority, to conduct the remedial action. Authority for remedial action under FUSRAP is

265

REP&V TO ATTNOF: NE-23 SUBJECT: Commercial Facilities Used by National Lead Company of Ohio in Support  

Office of Legacy Management (LM)

x:Y" x:Y" . .' 3023 I\ \ 'a' '. Unita? -&&s Coverament , ,Q,.l. ),&, ,(>.. Department of Energy riGmorandum / d6a 2/. $3 DATE: JL(L 2 8 ;;$5 co. /3 .-J/ co,/3 REP&V TO ATTNOF: NE-23 SUBJECT: Commercial Facilities Used by National Lead Company of Ohio in Support of FMPC Operations TO: Robert E. Lynch Procuremnent and Contracts Division, AD-42 Oak Ridge Operations Office The Division of Facility and Site Decommissioning Projects (DFSD) is responsible for managing the Department's Formerly Utilized Sites Remedial Action Program (FuSRAP). The purposes of FUSRAP are (1) to identify facilities formerly operated for or by the Manhattan Engineer District (NED) and Atomic Energy Commission (AEC) which may have been radioactively contaminated as a result of these operations, (2) to determine if the

266

Using the X-FEL to photo-pump X-ray laser transitions in He-like Ne  

SciTech Connect

Nearly four decades ago H-like and He-like resonantly photo-pumped laser schemes were proposed for producing X-ray lasers. However, demonstrating these schemes in the laboratory has proved to be elusive because of the difficulty of finding a strong resonant pump line. With the advent of the X-ray free electron laser (X-FEL) at the SLAC Linac Coherent Light Source (LCLS) we now have a tunable X-ray laser source that can be used to replace the pump line in previously proposed laser schemes and allow researchers to study the physics and feasibility of resonantly photo-pumped laser schemes. In this paper we use the X-FEL at 1174 eV to photo-pump the singly excited 1s2p state of He-like Ne to the doubly excited 2p3p state and model gain on the 2p3p-2p2s transition at 175 eV and the 2p3p-1s3p transition at 1017 eV. One motivation for studying this scheme is to explore possible quenching of the gain due to strong non-linear coupling effects from the intense X-FEL beam We compare this scheme with photo-pumping the He-like Ne ground state to the 1s3p singly excited state followed by lasing on the 3p-2s and 3d-2p transitions at 158 and 151 eV. Experiments are being planned at LCLS to study these laser processes and coherent quantum effects.

Nilsen, J; Rohringer, N

2011-08-30T23:59:59.000Z

267

Characterization of LiNi?.?Mn?.?O? Thin Film Cathode Prepared by Pulsed Laser Deposition  

E-Print Network (OSTI)

LiNi?.?Mn?.?O? thin films have been grown by pulsed laser deposition (PLD) on stainless steel (SS) substrates. The crystallinity and structure of thin films were investigated by X-ray diffraction (XRD). Microstructure and ...

Xia, Hui

268

D11: Thermodynamic and Electrochemical Properties of the Mg-Mn ...  

Science Conference Proceedings (OSTI)

B7: Synthesis and Electrical Properties of K2NiF4-Type (Ca2-xLnx)MnO4 (Ln=Nd and Sm) B8: Monitoring Oxygen Diffusion in Gd-Doped Ceria by Null...

269

100- The Effect of Mn and Pr Co-Doping on Electrical Properties of ...  

Science Conference Proceedings (OSTI)

144- The Role of Mn Content on Microstructure and Phases of High Alloyed White Cast Irons 145- The Synergy of XRD and XRF in a Shale and Slate Analysis.

270

Southwest MN IPM STUFF All the pestilence that's fit to print  

E-Print Network (OSTI)

and soybeans during hot dry weather. Twospotted spider mites are favored by high temperatures and drought Southwest Research and Outreach Center 23669 130th Street Lamberton, MN 56152 Phone: 507.752.5066 Cell: 507

Amin, S. Massoud

271

Southwest MN IPM STUFF All the pestilence that's fit to print  

E-Print Network (OSTI)

started to show up. This could be a bad year for this disease. Cool wet spring and hot, dry late seasons Research and Outreach Center 23669 130th Street Lamberton, MN 56152 Phone: 507.752.5066 Cell: 507

Amin, S. Massoud

272

Formation of nano-crystalline todorokite from biogenic Mn Xiong Han Feng a,1  

E-Print Network (OSTI)

Formation of nano-crystalline todorokite from biogenic Mn oxides Xiong Han Feng a,1 , Mengqiang Zhu oxides in the environment. Additionally this method may be a viable biosynthesis route for porous, nano

Sparks, Donald L.

273

Mn solid solutions in self-assembled Ge/Si (001) quantum dot heterostructures  

SciTech Connect

Heteroepitaxial Ge{sub 0.98}Mn{sub 0.02} quantum dots (QDs) on Si (001) were grown by molecular beam epitaxy. The standard Ge wetting layer-hut-dome-superdome sequence was observed, with no indicators of second phase formation in the surface morphology. We show that Mn forms a dilute solid solution in the Ge quantum dot layer, and a significant fraction of the Mn partitions into a sparse array of buried, Mn-enriched silicide precipitates directly underneath a fraction of the Ge superdomes. The magnetic response from the ultra-thin film indicates the absence of robust room temperature ferromagnetism, perhaps due to anomalous intermixing of Si into the Ge quantum dots.

Kassim, J.; Nolph, C.; Reinke, P.; Floro, J. [Department of Materials Science and Engineering, University of Virginia, Charlottesville, Virginia 22904 (United States); Jamet, M. [Institut Nanosciences et Cryogenie/SP2M, CEA-UJF, F-38054 Grenoble (France)

2012-12-10T23:59:59.000Z

274

Synthesis, characterization, and microwave-absorbing properties of polypyrrole/MnFe2O4 nanocomposite  

Science Conference Proceedings (OSTI)

Conductive polypyrrole (PPy)-manganese ferrite (MnFe2O4) nanocomposites with core-shell structure were synthesized by in situ polymerization in the presence of dodecyl benzene sulfonic acid (DBSA) as the surfactant and dopant and ...

Seyed Hossein Hosseini; Ahmad Asadnia

2012-01-01T23:59:59.000Z

275

Aliovalent titanium substitution in layered mixed Li Ni-Mn-Co oxides for lithium battery applications  

Science Conference Proceedings (OSTI)

Improved electrochemical characteristics are observed for Li[Ni1/3Co1/3-yMyMn1/3]O2 cathode materials when M=Ti and ycapacity.

Kam, Kinson; Doeff, Marca M.

2010-12-01T23:59:59.000Z

276

Electrophysical properties of semimagnetic solid solutions Hg 1?x Mn x Te  

Science Conference Proceedings (OSTI)

A comprehensive study of the electrophysical properties of the semimagnetic ternary solid solution Hg 1?x Mn x Te an alternative material to Hg 1?x Cd x Te is reported. The charge-carrier scattering

I. M. Nesmelova; V. N. Ryzhkov; M. I. Ibragimova; V. Yu. PetukhovKazan Physicotechnical Institute, Kazan Research Center of the Russian Academy of Sciences, Kazan?420029, Russia

2004-01-01T23:59:59.000Z

277

Spin current switching and spin-filtering effects in Mn-doped boron nitride nanoribbons  

Science Conference Proceedings (OSTI)

The spin transport properties are investigated by means of the first principle approach for boron nitride nanoribbons with one or two substitutional Mn impurities, connected to graphene electrodes. The spin current polarization is evaluated using the ...

G. A. Nemnes

2012-01-01T23:59:59.000Z

278

Mn Monolayer Modified Rh for Syngas-to-Ethanol Conversion: A First-Principles Study  

SciTech Connect

Rh is unique in its ability to convert syngas to ethanol with the help of promoters. We performed systematic first-principles computations to examine the catalytic performance of pure and Mn modified Rh(100) surfaces for ethanol formation from syngas. CO dissociation on the surface as well as CO insertion between the chemisorbed CH{sub 3} and the surface are the two key steps. The CO dissociation barrier on the Mn monolayer modified Rh(100) surface is remarkably lowered by {approx}1.5 eV compared to that on Rh(100). Moreover, the reaction barrier of CO insertion into the chemisorbed CH{sub 3} group on the Mn monolayer modified Rh(100) surface is 0.34 eV lower than that of methane formation. Thus the present work provides new mechanistic insight into the role of Mn promoters in improving Rh's selectivity to convert syngas to ethanol.

Li, Fengyu [University of Puerto Rico; Jiang, Deen [ORNL; Zeng, X.C. [University of Nebraska, Lincoln; Chen, Zhongfang [University of Puerto Rico

2012-01-01T23:59:59.000Z

279

Building of a Novel Mn12 Single Molecule Magnet by Assembly of Anisotropic  

NLE Websites -- All DOE Office Websites (Extended Search)

Building of a Novel Mn12 Single Building of a Novel Mn12 Single Molecule Magnet by Assembly of Anisotropic Triangles Building of a Novel Mn12 Single Molecule Magnet by Assembly of Anisotropic Triangles Print Wednesday, 06 July 2011 12:58 Assembly of triangular {MnIII3(O)(salox)3}+ fragments mediated by azido ligands, results in the dodecanuclear [Mn12O4(salox)12(N3)4(MeOH)4(H2O)2] complex with S = 8 ground state and SMM response. After the discovery of the Single-Molecule-Magnet (SMM) behaviour of [Mn6(O)2(salox)6(R-COO)2] (salox = salicylaldoxime, R = Me, Ph) complexes in 2004,1 the chemistry of this family of [Mn6] clusters has been studied in depth: the systematic change of the carboxylato ligands, the study of substitutedR-saloxH2 related ligands,2 the effect of variation of the oxidation state,3 the response under pressure4 or the one-dimensional assembly of [Mn6] units into chains of clusters5 with Single-Chain-Magnet behaviour in some cases,5c,d turn this system into one of the best known in the SMM field. One of the main goals of this work, developed by Brechin et al. has been to modulate the value of the ground spin level, reaching the maximum possible spin S = 12 by means of the adequate choice of methyl or ethyl substituted salicylaldoximes and the understanding of the structural features that control the coupling inside the triangles. Article Link (PDF)

280

NEUTRON DIFFRACTION STUDY OF A NON-STOICHIOMETRIC Ni-Mn-Ga MSM ALLOY  

SciTech Connect

The structure and chemical order of a Heusler alloy of non-stoichiometric composition Ni-Mn-Ga were studied using constant-wavelength (1.538 ) neutron diffraction at 363K and the diffraction pattern was refined using the FullProf software. At this temperature the structure is austenite (cubic) with Fm-3m space group and lattice constant of a = 5.83913(4) [ ]. The chemical order is of critical importance in these alloys, as Mn becomes antiferromagnetic when the atoms are closer than the radius of the 3d shell. In the studied alloy the refinement of the site occupancy showed that the 4b (Ga site) contained as much as 22% Mn; that significantly alters the distances between the Mn atoms in the crystal and, as a result, also the exchange energy between some of the Mn atoms. Based on the refinement, the composition was determined to be Ni1.91Mn1.29Ga0.8

Ari-Gur, Pnina [Western Michigan University; Garlea, Vasile O [ORNL

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "ne sd mn" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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281

Effects of laser irradiation on the self-assembly of MnAs nanoparticles in a GaAs matrix  

SciTech Connect

We investigate the effects of laser irradiation on the self-assembly of MnAs nanoparticles during solid-phase decomposition in a GaAs matrix. It is found that laser irradiation suppresses the growth of MnAs nanoparticles from small to large size, and that the median diameter D{sub 1} in the size distribution of small MnAs nanoparticles depends on the incident photon energy E following D{sub 1} {approx} E{sup -1/5}. We explain this behavior by the desorption of Mn atoms on the MnAs nanoparticle surface due to resonant optical absorption, in which incident photons excite intersubband electronic transitions between the quantized energy levels in the MnAs nanoparticles.

Hai, Pham Nam; Nomura, Wataru [Department of Electrical Engineering and Information Systems, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan); Yatsui, Takashi; Ohtsu, Motoichi; Tanaka, Masaaki [Department of Electrical Engineering and Information Systems, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan); Nanophotonics Research Center, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan)

2012-11-05T23:59:59.000Z

282

Magnetic field-induced phase transformation and variant reorientation in Ni2MnGa and NiMnCoIn magnetic shape memory alloys  

E-Print Network (OSTI)

The purpose of this work is to reveal the governing mechanisms responsible for the magnetic field-induced i) martensite reorientation in Ni2MnGa single crystals, ii) stress-assisted phase transformation in Ni2MnGa single crystals and iii) phase transformation in NiMnCoIn alloys. The ultimate goal of utilizing these mechanisms is to increase the actuation stress levels in magnetic shape memory alloys (MSMAs). Extensive experimental work on magneto-thermo-mechanical (MTM) characterization of these materials enabled us to i) better understand the ways to increase the actuation stress and strain and decrease the required magnetic field for actuation in MSMAs, ii) determine the effects of main MTM parameters on reversible magnetic field induced phase transformation, such as magnetocrystalline anisotropy energy (MAE), Zeeman energy (ZE), stress hysteresis, thermal hysteresis, critical stress for the stress induced phase transformation and crystal orientation, iii) find out the feasibility of employing polycrystal MSMAs, and iv) formulate a thermodynamical framework to capture the energetics of magnetic field-induced phase transformations in MSMAs. Magnetic shape memory properties of Ni2MnGa single crystals were characterized by monitoring magnetic field-induced strain (MFIS) as a function of compressive stress and stress-induced strain as a function of magnetic field. It is revealed that the selection of the operating temperature with respect to martensite start and Curie temperatures is critical in optimizing actuator performance. The actuation stress of 5 MPa and work output of 157 kJm?3 are obtained by the field-induced variant reorientation in NiMnGa alloys. Reversible and one-way stress-assisted field-induced phase transformations are observed in Ni2MnGa single crystals under low field magnitudes (transformation and shape memory characteristics of NiMnCoIn single crystals are also studied. Reversible field-induced phase transformation is observed only under high magnetic fields (>4T). Necessary magnetic and mechanical conditions, and materials design and selection guidelines are proposed to search for field-induced phase transformation in other ferromagnetic materials that undergo thermoelastic martensitic phase transformation.

Karaca, Haluk Ersin

2007-08-01T23:59:59.000Z

283

Properties of Ga{sub 1-x}Mn{sub x}As with high x (>0.1)  

SciTech Connect

We have investigated the magnetic and the crystalline properties of a set of Ga{sub 1-x}Mn{sub x}As layers with high nominal Mn compositions (x=0.101-0.198). Magnetization measurements and combined channeling Rutherford backscattering (c-RBS) and particle induced x-ray emission (c-PIXE) measurements have been performed to determine the effective Mn composition x{sub eff} and the fraction of Mn atoms at various lattice sites. Here, x{sub eff} determined from magnetization measurements, which increases with increasing x, is consistent with the results determined from c-RBS-PIXE measurements.

Chiba, D. [Semiconductor Spintronics Project, Exploratory Research for Advanced Technology, Japan Science and Technology Agency, Sendai 980-0023 (Japan); Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577 (Japan); Yu, K. M.; Walukiewicz, W. [Electronic Materials Program, Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94549 (United States); Nishitani, Y. [Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577 (Japan); Matsukura, F.; Ohno, H. [Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577 (Japan); Semiconductor Spintronics Project, Exploratory Research for Advanced Technology, Japan Science and Technology Agency, Sendai 980-0023 (Japan)

2008-04-01T23:59:59.000Z

284

Mn-Stabilized Zirconia: From Imitation Diamonds to a New Potential High-T{sub C} Ferromagnetic Spintronics Material  

SciTech Connect

From the basis of ab initio electronic structure calculations which include the effects of thermally excited magnetic fluctuations, we predict Mn-stabilized cubic zirconia to be ferromagnetic above 500 K. We find this material, which is well known both as an imitation diamond and as a catalyst, to be half-metallic with the majority and minority spin Mn impurity states lying in zirconia's wide gap. The Mn concentration can exceed 40%. The high-T{sub C} ferromagnetism is robust to oxygen vacancy defects and to how the Mn impurities are distributed on the Zr fcc sublattice. We propose this ceramic as a promising future spintronics material.

Ostanin, S. [Max-Planck-Institut fuer Mikrostrukturphysik, Weinberg 2, D-06120 Halle (Saale) (Germany); Department of Physics, University of Warwick, Coventry CV4 7AL (United Kingdom); Ernst, A.; Sandratskii, L. M.; Bruno, P. [Max-Planck-Institut fuer Mikrostrukturphysik, Weinberg 2, D-06120 Halle (Saale) (Germany); Daene, M.; Hergert, W.; Mertig, I. [Martin-Luther-Universitaet Halle-Wittenberg, Fachbereich Physik, D-06099 Halle (Germany); Hughes, I. D.; Staunton, J. B. [Department of Physics, University of Warwick, Coventry CV4 7AL (United Kingdom); Kudrnovsky, J. [Max-Planck-Institut fuer Mikrostrukturphysik, Weinberg 2, D-06120 Halle (Saale) (Germany); Institute of Physics, Academy of Sciences of the Czech Republic, Na Slovance 2, CZ-18221 Prague 8 (Czech Republic)

2007-01-05T23:59:59.000Z

285

Flexible Zn2SnO4/MnO2 Core/Shell Nanocable-Carbon Microfiber ...  

Science Conference Proceedings (OSTI)

Presentation Title, Flexible Zn2SnO4/MnO2 Core/Shell Nanocable-Carbon Microfiber Hybrid Composites for High-Performance Supercapacitor Electrodes.

286

Magnetic order near 270 K in mineral and synthetic Mn 2 FeSbO 6 ilmenite  

Science Conference Proceedings (OSTI)

The structural and magnetic properties of Mn 2 FeSbO 6 single-crystalline mineral and ceramic samples synthesized under thermobaric treatment have been investigated

R. Mathieu; S. A. Ivanov; G. V. Bazuev; M. Hudl; P. Lazor; I. V. Solovyev; P. Nordblad

2011-01-01T23:59:59.000Z

287

PETROPHYSICAL INVESTIGATION OF THE SECONDARY RECOVERY POTENTIAL IN THE CHERRY CANYON FORMATION NE LEA FIELD LEA COUNTY, NEW MEXICO  

Science Conference Proceedings (OSTI)

Read and Stevens has proposed the evaluation of the waterflood potential from the Cherry Canyon formation in the NE Lea Field in lea County, New Mexico. Much of the development in this area is approaching primary recovery limitations; additional recovery of remaining oil reserves by waterflood needs to be evaluated. The Cherry Canyon formation is composed of fine grained sandstone, containing clay material which results in high water saturation, and also has the tendency to swell and reduce reservoir permeability--the ability of fluid to flow through the rock pores and fractures. There are also abundant organic materials that interfere with obtaining reliable well logs. These complications have limited oil in place calculations and identification of net pay zones, presenting a challenge to the planned waterflood. Core analysis of the Cherry Canyon should improve the understanding of existing well logs and possibly indicate secondary recovery measures, such as waterflood, to enhance field recovery. Lacking truly representative core to provide accurate analyses, Read and Stevens will obtain and preserve fresh core. The consulting firm of T. Scott Hickman and Associates will then collaborate on special core analyses and obtain additional well logs for a more detailed analysis of reservoir properties. The log interpretation will be compared to the core analysis results, and the entire collected data set will be used to assess the potential and economic viability of successfully waterflooding the identified oil zones. Successful results from the project will improve accuracy of log interpretation and establish a methodology for evaluating secondary recovery by waterflood.

T. Scott Hickman

2002-06-01T23:59:59.000Z

288

Novel Solar Energy Conversion Materials by Design of Mn(II) Oxides  

Science Conference Proceedings (OSTI)

Solar energy conversion materials need to fulfill simultaneously a number of requirements in regard of their band-structure, optical properties, carrier transport, and doping. Despite their desirable chemical properties, e.g., for photo-electrocatalysis, transition-metal oxides usually do not have desirable semiconducting properties. Instead, oxides with open cation d-shells are typically Mott or charge-transfer insulators with notoriously poor transport properties, resulting from large effective electron/hole masses or from carrier self-trapping. Based on the notion that the electronic structure features (p-d interaction) supporting the p-type conductivity in d10 oxides like Cu2O and CuAlO2 occurs in a similar fashion also in the d5 (high-spin) oxides, we recently studied theoretically the band-structure and transport properties of the prototypical binary d5 oxides MnO and Fe2O3 [PRB 85, 201202(R)]. We found that MnO tends to self-trap holes by forming Mn+III, whereas Fe2O3 self-traps electrons by forming Fe+II. However, the self-trapping of holes is suppressed by when Mn is tetrahedrally coordinated, which suggests specific routes to design novel solar conversion materials by considering ternary Mn(II) oxides or oxide alloys. We are presenting theory, synthesis, and initial characterization for these novel energy materials.

Lany, S.; Peng, H.; Ndione, P.; Zakutayev, A.; Ginley, D. S.

2013-01-01T23:59:59.000Z

289

High-Resolution Structure of the Photosynthetic Mn4Ca Catalyst from X-ray Spectroscopy  

Science Conference Proceedings (OSTI)

The application of high-resolution X-ray spectroscopy methods to study the photosynthetic water oxidizing complex, which contains a unique hetero-nuclear catalytic Mn4Ca cluster, are described. Issues of X-ray damage especially at the metal sites in the Mn4Ca cluster are discussed. The structure of the Mn4Ca catalyst at high-resolution which has so far eluded attempts of determination by X-ray diffraction, EXAFS and other spectroscopic techniques has been addressed using polarized EXAFS techniques applied to oriented PS II membrane preparations and PS II single crystals. A review of how the resolution of traditional EXAFS techniques can be improved, using methods such as range-extended EXAFS is presented, and the changes that occur in the structure of the cluster as it advances through the catalytic cycle are described. X-ray absorption and emission techniques (XANES and K? emission) have been used earlier to determine the oxidation states of the Mn4Ca cluster, and in this report we review the use of X-ray resonant Raman spectroscopy to understand the electronic structure of the Mn4Ca cluster as it cycles through the intermediate S-states.

Yachandra, Vittal; Yano, Junko; Kern, Jan; Pushkar, Yulia; Sauer, Kenneth; Glatzel, Pieter; Bergmann, Uwe; Messinger, Johannes; Zouni, Athina; Yachandra, Vittal K.

2007-08-01T23:59:59.000Z

290

Carbon/lambda-MnO{sub 2} composites for supercapacitor electrodes  

Science Conference Proceedings (OSTI)

In the present work a composite of carbon with lambda-MnO{sub 2} have been synthesized by a simple two-step route. In the first step, to obtain LiMn{sub 2}O{sub 4}/carbon material, mesoporous activated carbon was impregnated with the solution of precursor metal salts and heated subsequently. As-prepared materials were acid treated which resulted in the formation of lambda-MnO{sub 2}/carbon. Physical properties, structure and specific surface area of electrode materials were studied by TEM, X-ray diffraction and nitrogen sorption measurements. Voltammetry cycling, galvanostatic charge/discharge and impedance spectroscopy measurements performed in two- and three-electrode cells have been applied in order to measure electrochemical parameters. TEM images confirmed well dispersed lambda-MnO{sub 2} particles on the surface of carbon material. The carbon in the composite plays an important role as the surface area enhancing component and a support of pseudocapacitive material. Furthermore, the through-connected porosity serves as a continuous pathway for electrolyte transport. A synergetic effect of the porous carbon framework and of the redox properties of the lambda-MnO{sub 2} is at the origin of improvement of specific capacitance values which has been observed for composites after delithiation. - Comparison of capacitance characteristics for initial carbon and synthesised composites for CB in 1 mol L{sup -1} Na{sub 2}SO{sub 4} solution.

Malak-Polaczyk, A., E-mail: agnieszka-malak@wp.p [Institute of Chemistry and Technical Electrochemistry, Poznan University of Technology, Piotrowo 3, 60-695 Poznan (Poland); Institut de Sciences des Materiaux de Mulhouse, CNRS LRC 7228, 15 Rue Starcky, 68057 Mulhouse (France); Matei-Ghimbeu, C.; Vix-Guterl, C. [Institut de Sciences des Materiaux de Mulhouse, CNRS LRC 7228, 15 Rue Starcky, 68057 Mulhouse (France); Frackowiak, E. [Institute of Chemistry and Technical Electrochemistry, Poznan University of Technology, Piotrowo 3, 60-695 Poznan (Poland)

2010-04-15T23:59:59.000Z

291

Investigation of Modified Ni-Cr-Mn Base Alloys for SOFC Interconnect Applications  

Science Conference Proceedings (OSTI)

Two Ni-Cr-W-Mn base alloys based on Haynes 230 were developed and evaluated against criteria relevant to SOFC interconnect applications, which included oxidation behavior under SOFC operating conditions, scale electrical conductivity, and thermal expansion. It was found that, similar to the ferritic stainless steel Crofer22 APU, additions of Mn led to the formation of a unique scale that was comprised of a M3O4 (M=Mn, Cr, Ni, ) spinel-rich top layer and Cr2O3-rich sub-layer. The modified alloys demonstrated reasonable oxidation resistance under SOFC operating conditions, though the Mn additions increased the scale growth rate and thus sacrificed to some extent the oxidation resistance of the base alloy (Haynes 230). The formation of a spinel-rich top layer improved the scale conductivity, especially during the early stages of oxidation, but the higher scale growth rate resulted in a higher rate of increase in the area-specific electrical resistance. Due to their FCC crystal structure, the Ni-Cr-W-Mn base alloys demonstrated a CTE that was higher than that of anode-supported cells and candidate ferritic stainless steels such as Crofer22 APU.

Yang, Z Gary; Singh, Prabhakar; Stevenson, Jeffry W.; Xia, Gordon

2006-09-01T23:59:59.000Z

292

Xcel Energy - Solar*Rewards Program and MN Made PV Rebate Program |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Xcel Energy - Solar*Rewards Program and MN Made PV Rebate Program Xcel Energy - Solar*Rewards Program and MN Made PV Rebate Program Xcel Energy - Solar*Rewards Program and MN Made PV Rebate Program < Back Eligibility Commercial Local Government Nonprofit Residential Savings Category Solar Buying & Making Electricity Maximum Rebate $90,000 (as determined by the incentive level and maximum system size) Program Info Start Date 03/01/2010 State Minnesota Program Type Utility Rebate Program Rebate Amount REC Rebate Program 2010-2012:$2.25/W DC REC Rebate Program 2013:$1.50/W DC Minnesota Made Bonus 2010-2012:Up to an additional $2.75/W DC (paired with REC Rebate) Provider Xcel Energy '''''Note: All 2012 funding for the Solar*Rewards program and Minnesota Made Bonus has been reserved as of July 11, 2012. On October 1, 2012, the

293

Magnetism, chemical spots, and stratification in the HgMn star phi Phoenicis  

E-Print Network (OSTI)

Mercury-manganese (HgMn) stars have been considered as non-magnetic and non-variable chemically peculiar (CP) stars for a long time. However, recent discoveries of the variability in spectral line profiles suggested an inhomogeneous surface distribution of chemical elements in some HgMn stars. From the studies of other CP stars it is known that magnetic field plays a key role in the formation of surface spots. All attempts to find magnetic fields in HgMn stars yielded negative results. In this study, we investigate a possible presence of the magnetic field in phi Phe (HD 11753) and reconstruct surface distribution of chemical elements that show variability in spectral lines. We also test a hypothesis that magnetic field is concentrated in chemical spots and look into the possibility that some chemical elements are stratified with depth in the stellar atmosphere.

Makaganiuk, V; Piskunov, N; Jeffers, S V; Johns-Krull, C M; Keller, C U; Rodenhuis, M; Snik, F; Stempels, H C; Valenti, J A

2011-01-01T23:59:59.000Z

294

In-situ spectro-microscopy on organic films: Mn-Phthalocyanine on Ag(100)  

SciTech Connect

Metal phthalocyanines are attracting significant attention, owing to their potential for applications in chemical sensors, solar cells and organic magnets. As the electronic properties of molecular films are determined by their crystallinity and molecular packing, the optimization of film quality is important for improving the performance of organic devices. Here, we present the results of in situ low-energy electron microscopy / photoemission electron microscopy (LEEM/PEEM) studies of incorporation-limited growth [1] of manganese-phthalocyanine (MnPc) on Ag(100) surfaces. MnPc thin films were grown on both, bulk Ag(100) surface and thin Ag(100)/Fe(100) films, where substrate spin-polarized electronic states can be modified through tuning the thickness of the Ag film [2]. We also discuss the electronic structure and magnetic ordering in MnPc thin films, investigated by angle- and spin-resolved photoemission spectroscopy.

Al-Mahboob A.; Vescovo, E.; Sadowski, J.T.

2013-08-18T23:59:59.000Z

295

Growth and Magnetic Properties of Mn-doped Germanium near the Kinetic Solubility Limit  

Science Conference Proceedings (OSTI)

Growth of high-quality dilute magnetic semiconductor (DMS) material is often compromised by the low solubility of magnetic dopants, leading to formation of precipitates. Here, we explore the feasibility of growing precipitate-free Mn-doped Ge at doping levels near the kinetic solubility limit. Ge:Mn DMS films were grown at low temperature so as to minimize precipitate formation. Meanwhile, epitaxial quality was maintained by employing a very low growth rate. The magnetic properties of these lightly doped films exhibit both interesting contrasts and similarities with those of heavily-doped DMS reported in the literature, indicating that the substitutional Mn contents are very similar. Films grown at 95 degree C are free of intermetallic precipitates, offering useful opportunities for studying the fundamentals of carrier mediated exchange and metal insulator transitions without complications arising from precipitate formation.

Ozer, Mustafa M [University of Tennessee, Knoxville (UTK); Thompson, James R [ORNL; Weitering, Harm H [ORNL

2012-01-01T23:59:59.000Z

296

Microwave-assisted fast vapor-phase transport synthesis of MnAPO-5 molecular sieves  

Science Conference Proceedings (OSTI)

MnAPO-5 was prepared by a microwave-assisted vapor-phase transport method at 180 deg. C in short times. The products were characterized by X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectra, UV-vis spectroscopic measurement, NH{sub 3}-temperature-programmed desorption and esterification reaction. It was found that dry gels prepared with aluminum isopropoxide, phosphoric acid and manganese acetate could be transferred to MnAPO-5 in the vapors of triethylamine and water by the microwave-assisted vapor-phase transport method at 180 deg. C for less than 30 min. The crystallization time was greatly reduced by the microwave heating compared with the conventional heating. The resulting MnAPO-5 exhibited much smaller particle sizes, higher surface areas and slightly higher catalytic activity in the esterification of acetic acid and butyl alcohol than those prepared by the conventional vapor-phase transport method and hydrothermal synthesis.

Shao Hui [State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing 210009 (China); Department of Chemical Engineering, Jiangsu Polytechnic University, Changzhou 213016 (China); Yao Jianfeng; Ke Xuebin [State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing 210009 (China); Zhang Lixiong [State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing 210009 (China)], E-mail: lixiongzhang@yahoo.com; Xu Nanping [State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing 210009 (China)

2009-04-02T23:59:59.000Z

297

Measurements of nuclear $\\gamma$-ray line emission in interactions of protons and $\\alpha$ particles with N, O, Ne and Si  

E-Print Network (OSTI)

$\\gamma$-ray production cross sections have been measured in proton irradiations of N, Ne and Si and $\\alpha$-particle irradiations of N and Ne. In the same experiment we extracted also line shapes for strong $\\gamma$-ray lines of $^{16}$O produced in proton and $\\alpha$-particle irradiations of O. For the measurements gas targets were used for N, O and Ne and a thick foil was used for Si. All targets were of natural isotopic composition. Beams in the energy range up to 26 MeV for protons and 39 MeV for $\\alpha$-particles have been delivered by the IPN-Orsay tandem accelerator. The $\\gamma$ rays have been detected with four HP-Ge detectors in the angular range 30$^{\\circ}$ to 135$^{\\circ}$. We extracted 36 cross section excitation functions for proton reactions and 14 for $\\alpha$-particle reactions. For the majority of the excitation functions no other data exist to our knowledge. Where comparison with existing data was possible usually a very good agreement was found. It is shown that these data are very in...

Benhabiles-Mezhoud, H; Thibaud, J -P; Tatischeff, V; Deloncle, I; Coc, A; Duprat, J; Hamadache, C; Lefebvre-Schuhl, A; Dalouzy, J -C; De Grancey, F; De Oliveira, F; Dayras, F; De Srville, N; Pellegriti, M -G; Lamia, L; Ouichaoui, S

2010-01-01T23:59:59.000Z

298

THE INFLUENCE OF UNCERTAINTIES IN THE {sup 15}O({alpha}, {gamma}){sup 19}Ne REACTION RATE ON MODELS OF TYPE I X-RAY BURSTS  

SciTech Connect

We present a Monte Carlo calculation of the astrophysical rate of the {sup 15}O({alpha}, {gamma}){sup 19}Ne reaction based on an evaluation of published experimental data. By considering the likelihood distributions of individual resonance parameters derived from measurements, estimates of upper and lower limits on the reaction rate at the 99.73% confidence level are derived in addition to the recommended, median value. These three reaction rates are used as input for three separate calculations of Type I X-ray bursts (XRBs) using spherically symmetric, hydrodynamic simulations of an accreting neutron star. In this way the influence of the {sup 15}O({alpha}, {gamma}){sup 19}Ne reaction rate on the peak luminosity, recurrence time, and associated nucleosynthesis in models of Type I XRBs is studied. Contrary to previous findings, no substantial effect on any of these quantities is observed in a sequence of four bursts when varying the reaction rate between its lower and upper limits. Rather, the differences in these quantities are comparable to the burst-to-burst variations with a fixed reaction rate, indicating that uncertainties in the {sup 15}O({alpha}, {gamma}){sup 19}Ne reaction rate do not strongly affect the predictions of this Type I XRB model.

Davids, Barry [TRIUMF, Vancouver, BC V6T 2A3 (Canada); Cyburt, Richard H. [Joint Institute for Nuclear Astrophysics and National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI (United States); Jose, Jordi [Departament de Fisica i Enginyeria Nuclear, Universitat Politecnica de Catalunya and Institut d'Estudis Espacials de Catalunya, Barcelona (Spain); Mythili, Subramanian [Physics Department, George Mason University, Fairfax, VA (United States)

2011-07-01T23:59:59.000Z

299

Neutron and X-ray diffraction studies on the high temperature phase of Mn{sub 3}(VO{sub 4}){sub 2}, the new isostructural compound NaMn{sub 4}(VO{sub 4}){sub 3} and their mixed crystals Na{sub x}Mn{sub 4.5-x/2}(VO{sub 4}){sub 3} (0{<=}x{<=}1)  

SciTech Connect

This paper presents a detailed structure analysis (combined Rietveld analysis of X-ray and neutron powder diffraction data as well as quantum mechanical calculations) of the high temperature phase of Mn{sub 3}(VO{sub 4}){sub 2} (space group I4 Macron 2d). Special attention is directed to the analysis of the local coordination around Mn{sup 2+} ions or vacancies within a stella quadrangula configuration of anions. Furthermore, the new compound NaMn{sub 4}(VO{sub 4}){sub 3} is described as well as a range of mixed crystals between NaMn{sub 4}(VO{sub 4}){sub 3} and Mn{sub 3}(VO{sub 4}){sub 2} (described by the formula Na{sub x}Mn{sub 4.5-x/2}(VO{sub 4}){sub 3}, 0{<=}x{<=}1) which were synthesized by a solid state route. All compounds were shown to be isostructural to the high temperature phase Mn{sub 3}(VO{sub 4}){sub 2}. - Graphical abstract: The crystal structure of the new compound NaMn{sub 4}(VO{sub 4}){sub 3}. Highlights: Black-Right-Pointing-Pointer We present neutron and X-ray diffraction studies on high temperature-Mn{sub 3}(VO{sub 4}){sub 2}. Black-Right-Pointing-Pointer Structural details of partly filled stellae quadrangulae positions are discussed. Black-Right-Pointing-Pointer Refined structural parameters and theoretical calculations are compared. Black-Right-Pointing-Pointer We investigate the mixed crystal system Mn{sub 3}(VO{sub 4}){sub 2}-NaMn{sub 4}(VO{sub 4}){sub 3}.

Clemens, Oliver [Universitaet des Saarlandes, Institut fuer Anorganische und Analytische Chemie und Radiochemie, Am Markt, Zeile 5, 66125 Saarbruecken (Germany)] [Universitaet des Saarlandes, Institut fuer Anorganische und Analytische Chemie und Radiochemie, Am Markt, Zeile 5, 66125 Saarbruecken (Germany); Haberkorn, Robert [Universitaet des Saarlandes, Anorganische Festkoerperchemie, Am Markt, Zeile 3, 66125 Saarbruecken (Germany)] [Universitaet des Saarlandes, Anorganische Festkoerperchemie, Am Markt, Zeile 3, 66125 Saarbruecken (Germany); Springborg, Michael [Universitaet des Saarlandes, Physikalische und Theoretische Chemie, Campus B2 2, 66123 Saarbruecken (Germany)] [Universitaet des Saarlandes, Physikalische und Theoretische Chemie, Campus B2 2, 66123 Saarbruecken (Germany); Beck, Horst Philipp, E-mail: hp.beck@mx.uni-saarland.de [Universitaet des Saarlandes, Institut fuer Anorganische und Analytische Chemie und Radiochemie, Am Markt, Zeile 5, 66125 Saarbruecken (Germany)

2012-10-15T23:59:59.000Z

300

Stoichiometric growth of high Curie temperature heavily alloyed GaMnAs  

SciTech Connect

Heavily alloyed, 100 nm Ga{sub 1-x}Mn{sub x}As (x>0.1) films are obtained via low-temperature molecular beam epitaxy by utilizing a combinatorial technique which allows systematic control of excess arsenic during growth. Reproducible electronic, magnetic, and structural properties are optimized in a narrow range of stoichiometric growth conditions. In contrast to a prediction of the Zener model of hole-mediated ferromagnetism, the Curie temperature of the stoichiometric material is independent of x (for x>0.1), while substitutional Mn content is proportional to x within a large window of growth conditions.

Mack, S.; Myers, R. C.; Heron, J. T.; Gossard, A. C.; Awschalom, D. D. [Center for Spintronics and Quantum Computation, University of California, Santa Barbara, California 93106 (United States)

2008-05-12T23:59:59.000Z

Note: This page contains sample records for the topic "ne sd mn" from the National Library of EnergyBeta (NLEBeta).
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they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Ultrafast Enhancement of Ferromagnetism via Photoexcited Holes inGaMnAs  

SciTech Connect

We report on the observation of ultrafast photo-enhanced ferromagnetism in GaMnAs. It is manifested as a transient magnetization increase on a 100-ps time scale, after an initial sub-ps demagnetization. The dynamic magnetization enhancement exhibits a maximum below the Curie temperature {Tc} and dominates the demagnetization component when approaching {Tc}. We attribute the observed ultrafast collective ordering to the p-d exchange interaction between photoexcited holes and Mn spins, leading to a correlation-induced peak around 20K and a transient increase in {Tc}.

Wang, J.; Cotoros, I.; Dani, K.M.; Liu, X.; Furdyna, J.K.; Chemla, D.S.

2007-02-17T23:59:59.000Z

302

Relaxation of photoinduced spins and carriers in ferromagnetic InMnSb films  

SciTech Connect

The authors report time resolved measurements and control of photoinduced spin and carrier relaxations in InMnSb ferromagnetic films with 2% Mn content (grown by low-temperature molecular beam epitaxy) using femtosecond laser pulses, and compare them to analogous measurements on InBeSb and InSb films. In this work, magneto-optical Kerr effect and standard pump-probe techniques provided a direct measure of the photoexcited spin and carrier lifetimes, respectively. They observe decrease in relaxations times in the high laser fluence regime and an absence of temperature dependence of the relaxation times.

Nontapot, K.; Kini, R. N.; Gifford, A.; Merritt, T. R.; Khodaparast, G. A.; Wojtowicz, T.; Liu, X.; Furdyna, J. K. [Department of Physics, Virginia Tech, Blacksburg, Virginia 24061 (United States); Institute of Physics, Polish Academy of Sciences, 02-668 Warsaw (Poland); Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556 (United States)

2007-04-02T23:59:59.000Z

303

Fabrication of (Mn,Co)3O4 Surface Coatings onto Alloy Substrates  

DOE Green Energy (OSTI)

Ferritic stainless steels are promising candidates for IT-SOFC interconnect applications due to their low cost and resistance to oxidation at SOFC operating temperatures. However, several challenges remain, including long term electrical conductivity and surface stability under interconnect exposure conditions and chromia scale evaporation. One means of extending interconnect lifetime and improving performance is to apply a protective coating, such as (Mn,Co)3O4 spinel, to the cathode side of the interconnect. These coatings have proven effective in reducing scale growth kinetics and Cr volatility. This report describes several procedures developed at PNNL for fabricating (Mn,Co)3O4 spinel coatings onto ferritic stainless steels.

Yang, Zhenguo; Xia, Guanguang; Li, Xiaohong S.; Singh, Prabhakar; Stevenson, Jeffry W.

2007-04-30T23:59:59.000Z

304

Measurement of Neutrino-Nucleon Neutral-Current Elastic Scattering Cross-section at SciBooNE  

SciTech Connect

In this thesis, results of neutrino-nucleon neutral current (NC) elastic scattering analysis are presented. Neutrinos interact with other particles only with weak force. Measurement of cross-section for neutrino-nucleon reactions at various neutrino energy are important for the study of nucleon structure. It also provides data to be used for beam flux monitor in neutrino oscillation experiments. The cross-section for neutrino-nucleon NC elastic scattering contains the axial vector form factor G{sub A}(Q{sup 2}) as well as electromagnetic form factors unlike electromagnetic interaction. G{sub A} is propotional to strange part of nucleon spin ({Delta}s) in Q{sup 2} {yields} 0 limit. Measurement of NC elastic cross-section with smaller Q{sup 2} enables us to access {Delta}s. NC elastic cross-sections of neutrino-nucleon and antineutrino-nucleon were measured earlier by E734 experiment at Brookheaven National Laboratory (BNL) in 1987. In this experiment, cross-sections were measured in Q{sup 2} > 0.4 GeV{sup 2} region. Result from this experiment was the only published data for NC elastic scattering cross-section published before our experiment. SciBooNE is an experiment for the measurement of neutrino-nucleon scattering cross-secitons using Booster Neutrino Beam (BNB) at FNAL. BNB has energy peak at 0.7 GeV. In this energy region, NC elastic scattering, charged current elastic scattering, charged current pion production, and neutral current pion production are the major reaction branches. SciBar, electromagnetic calorimeter, and Muon Range Detector are the detectors for SciBooNE. The SciBar consists of finely segmented scintillators and 14336 channels of PMTs. It has a capability to reconstruct particle track longer than 8 cm and separate proton from muons and pions using energy deposit information. Signal of NC elastic scattering is a single proton track. In {nu}p {yields} {nu}p process, the recoil proton is detected. On the other hand, most of {nu}n {yields} {nu}n is invisible because there are only neutral particles in final state, but sometimes recoil neutron is scattered by proton and recoil proton is detected. Signal of this event is also single proton track. Event selection for the single proton track events using geometrical and dE/dx information of reconstructed track is performed. After the event selection, NC elastic scattering data sample is obtained. They includes {nu}p {yields} {nu}p and {nu}n {yields} {nu}n is obtained. Absolute cross-section as a function of Q{sup 2} is evaluated from this NC elastic scattering data sample.

Takei, Hideyuki; /Tokyo Inst. Tech.

2009-02-01T23:59:59.000Z

305

Multisegmented Au-MnO2/Carbon Nanotube Hybrid Coaxial Arrays for High-Power Supercapacitor Applications  

E-Print Network (OSTI)

Multisegmented Au-MnO2/Carbon Nanotube Hybrid Coaxial Arrays for High-Power SupercapacitorVised Manuscript ReceiVed: NoVember 4, 2009 The present work reports on synthesis and supercapacitor applications hybrid coaxial arrays are efficient electrodes for supercapacitor applications. Au-segmented MnO2/CNT

Ajayan, Pulickel M.

306

Growth of single-crystal {alpha}-MnO{sub 2} nanorods on multi-walled carbon nanotubes  

Science Conference Proceedings (OSTI)

Single-crystal {alpha}-MnO{sub 2} nanorods were grown on multi-walled carbon nanotubes (MWNTs) in H{sub 2}SO{sub 4} aqueous solution. The morphology and microstructure of the composites were examined by transmission electron microscopy, high-resolution transmission electron microscopy (HRTEM), X-ray diffractometry and energy dispersive spectroscopy (EDS). The results show that {alpha}-MnO{sub 2} single-crystal nanorods with a mean diameter of 15 nm were densely grown on the surface of MWNTs. Those MWNTs/MnO{sub 2} composites were used as an electrode material for supercapacitors, and it was found that the supercapacitor performance using MWNTs/MnO{sub 2} composites was improved largely compared to that using pure MWNTs and {alpha}-MnO{sub 2} nanorod mechanically mixed with MWNTs.

Chen Yong [Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016 (China); Key Laboratory of Tropic Biological Resources, MOE, Hainan University, 58 Renmin Road, Haikou 570228 (China); Liu Chenguang; Liu Chang [Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016 (China); Lu Gaoqing [ARC Centre for Functional Nanomaterials, Australian Institute of Bioengineering and Nanotechnology, University of Queensland, QLD 4072 (Australia); Cheng Huiming [Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016 (China)], E-mail: cheng@imr.ac.cn

2007-11-06T23:59:59.000Z

307

NE Press Releases  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

press-releases 1000 Independence Ave. SWWashington DC press-releases 1000 Independence Ave. SWWashington DC 20585202-586-5000 en Energy Department Announces New Investment in Innovative Small Modular Reactor http://energy.gov/articles/energy-department-announces-new-investment-innovative-small-modular-reactor Energy Department Announces New Investment in Innovative Small Modular Reactor

308

NE photo galleries  

NLE Websites -- All DOE Office Websites (Extended Search)

Analysis (11) Programs: Advanced Fuel Cycle Initiative (6) Engineering and Structural Mechanics (3) Heat Transfer and Fluid Mechanics (6) Risk Methodology and Evaluation (2)...

309

A survey of Existing V&V, UQ and M&S Data and Knowledge Bases in Support of the Nuclear Energy - Knowledge base for Advanced Modeling and Simulation (NE-KAMS)  

SciTech Connect

The Nuclear Energy - Knowledge base for Advanced Modeling and Simulation (NE-KAMS) is being developed at the Idaho National Laboratory in conjunction with Bettis Laboratory, Sandia National Laboratories, Argonne National Laboratory, Oak Ridge National Laboratory, Utah State University and others. The objective of this consortium is to establish a comprehensive knowledge base to provide Verification and Validation (V&V) and Uncertainty Quantification (UQ) and other resources for advanced modeling and simulation (M&S) in nuclear reactor design and analysis. NE-KAMS will become a valuable resource for the nuclear industry, the national laboratories, the U.S. NRC and the public to help ensure the safe operation of existing and future nuclear reactors. A survey and evaluation of the state-of-the-art of existing V&V and M&S databases, including the Department of Energy and commercial databases, has been performed to ensure that the NE-KAMS effort will not be duplicating existing resources and capabilities and to assess the scope of the effort required to develop and implement NE-KAMS. The survey and evaluation have indeed highlighted the unique set of value-added functionality and services that NE-KAMS will provide to its users. Additionally, the survey has helped develop a better understanding of the architecture and functionality of these data and knowledge bases that can be used to leverage the development of NE-KAMS.

Hyung Lee; Rich Johnson, Ph.D.; Kimberlyn C. Moussesau

2011-12-01T23:59:59.000Z

310

Effect of solution hardening on the shape memory effect of Fe-Mn based alloys  

SciTech Connect

Fe-high Mn-Si alloys, which undergo {gamma} (fcc) to {var_epsilon} (hcp) martensitic transformation, exhibit a pronounced shape memory effect. The origin of shape memory effect of these alloys is the reversion of stress-induced {var_epsilon} martensite. A shape change must hence be accomplish3ed by stress-induced martensitic transformation without permanent slip in austenite ({gamma}) in order to obtain a good shape memory effect. It is clear that the intrusion of permanent slip can be suppressed by increasing the strength of austenite and by decreasing the applied stress required for a shape change due to stress-induced martensitic transformation. It has been reported that the addition of the interstitial elements of C and N as well as the substitutional elements of Mo and V increases the 0.2% proof stress of austenite in Fe-high Mn alloys. However, there have been few studies on the effect of these alloying elements on the shape memory effect of Fe-high Mn based alloys. In the present study, it was aimed to improve the shape memory effect of Fe-high Mn based alloys by the strengthening of austenite through solution hardening due to C and Mo.

Tsuzaki, K.; Natsume, Y.; Maki, T. [Kyoto Univ. (Japan). Dept. of Materials Science and Engineering; Tomota, Y. [Ibaraki Univ., Hitachi (Japan)

1995-10-01T23:59:59.000Z

311

Magnetic characterizations of sol-gel-produced mn-doped ZnO  

Science Conference Proceedings (OSTI)

Nanoparticles of ZnO doped with 6 at.% Mn were produced by a sol-gel method. X-ray diffraction confirms the hexagonal structure as that of the parent compound ZnO, and high-resolution electron transmission microscopy reveals a single-crystallite lattice. ...

R. Asmatulu; H. Haynes; M. Shinde; Y. H. Lin; Y. Y. Chen; J. C. Ho

2010-01-01T23:59:59.000Z

312

Cycling performance of nanocrystalline LiMn2O4 thin films via electrophoresis  

Science Conference Proceedings (OSTI)

The present study demonstrates a novel approach by which titanium foils coated with LiMn2O4 nanocrystals can be processed into a high-surface-area electrode for rechargeable batteries. A detailed study has been performed to elucidate ...

S. Parvathy; R. Ranjusha; K. Sujith; K. R. V. Subramanian; N. Sivakumar; Shantikumar V. Nair; Avinash Balakrishnan

2012-01-01T23:59:59.000Z

313

ON THE COMPETITION BETWEEN FERROMAGNETIC AND ANTIFERROMAGNETIC STATES IN Sr2MnMoO6  

E-Print Network (OSTI)

It is argued that the magnetic behavior of Sr2MnMoO6 is determined by the existence of two total energy minima corresponding to the metallic ferromagnetic and insulating antiferromagnetic states, which may be nearly degenerate depending on the magnitude of the breathing distortion. PACS: 71.20.Be; 71.70.Gm; 72.25.Ba; 75.30.Et

I. V. Solovyev

2002-01-01T23:59:59.000Z

314

Electrodeposition of Mn-Co Alloys on Stainless Steels for SOFC Interconnect Application  

Science Conference Proceedings (OSTI)

Chromium-containing ferritic stainless steels are the most popular materials for solid oxide fuel cell (SOFC) interconnect applications because of its oxidation resistance and easy fabrication process. However, excessive scale growth and chromium evaporation will degrade the cell performance. Highly conductive coatings that resist oxide scale growth and chromium evaporation may prevent both of these problems. Mn1.5Co1.5O4 spinel is one of the most promising coatings for interconnect application because of its high conducitivy, good chromium retention capability, as well as good CTE match. Electroplating of alloys or thin film multilayers followed by controlled oxidation to the desired spinel phase offers an additional deposition option. In the present study binary Mn/Co alloys was fabricated by electrodeposition, and polarization curves were used to characterize the cathodic reactions on substrate surface. By controlling the current density precisely, coatings with Mn/Co around 1:1 has been successfully deposited in Mn/Co =10 solutions, SEM and EDX was used to characterize the surface morphology and composition.

Wu, J. (West Virginia University); Jiang, Y. (West Virginia University); Johnson, C.; Gong, M. (West Virginia University); Liu, X. (West Virginia University)

2007-09-01T23:59:59.000Z

315

Modulation on Ni{sub 2}MnGa(001) surface  

SciTech Connect

We report periodic modulation on (001) surface of Ni2MnGa ferromagnetic shape memory alloy. For the stoichiometric surface, analysis of the low energy electron diffraction (LEED) spot profiles shows that the modulation is incommensurate. The modulation appears at 200 K, concomitant with the first order structural transition to the martensitic phase.

D'Souza, S. W.; Rai, Abhishek; Nayak, J.; Maniraj, M.; Dhaka, R. S.; Barman, S. R.; Schlagel, D. L.; Lograsso, T. A. [UGC-DAE Consortium for Scientific Research, Khandwa Road, Indore, 452001, Madhya Pradesh (India); Ames Laboratory U. S. DOE, Iowa State University, Ames, Iowa 50011-3020 (United States)

2011-07-15T23:59:59.000Z

316

Southwest MN IPM STUFF All the pestilence that's fit to print  

E-Print Network (OSTI)

in heavily infested fields in the near future. Hatch will continue for some time,. After a hot, humid day and Outreach Center 23669 130th Street Lamberton, MN 56152 Phone: 507.752.5066 Cell: 507.276.1184 Fax: 507

Amin, S. Massoud

317

Southwest MN IPM STUFF All the pestilence that's fit to print  

E-Print Network (OSTI)

of fields (hot spots) or field edges. Alate aphids depositing nymphs can rapidly increase the percentage for larva in square foot areas on the ground. During hot weather armyworms may hide under litter. In small 130th Street Lamberton, MN 56152 Phone: 507.752.5066 Cell: 507.276.1184 Fax: 507.752.5097 E

Amin, S. Massoud

318

Southwest MN IPM STUFF All the pestilence that's fit to print  

E-Print Network (OSTI)

indeed treated and the infestation was not a localized hot spot, this may signal the beginning of the end 23669 130th Street Lamberton, MN 56152 Phone: 507.752.5066 Cell: 507.276.1184 Fax: 507.752.5097 E

Amin, S. Massoud

319

Frustration and multiferroic behavior in Ca3CoMnO6  

Science Conference Proceedings (OSTI)

Lu{sub 2}MnCoO{sub 6} and Ca{sub 3}MnCoO{sub 6} satisfy one of the primary goals of multiferroics research, namely ferromagnetic-like magnetization coupled to ferroelectric-like polarization. Thus the mechanism for magnetoelectric coupling in these materials deserves careful study. New data shows that the physics of these compound may be related to the classic 'ANNNI' model. Frustration between ferromagnetic nearest-neighbor and antiferromagnetic next-nearest-neighbor interactions between Ising spins creates an 'up up down down' magnetic structure in zero magnetic field, along c-axis chains that consist of alternating Co and Mn ions. In applied magnetic fields 'up up down,' 'up up up down' and other metastable variations can evolve, yielding hysteretic ferromagnetic-like magnetization. The key is that the phase slips between regions of 'up' and 'down' carries an electric polarization due to broken spatial inversion symmetry. Thus these phase slips can be manipulated with both electric and magnetic fields. The result is a profusion of magnetic and electric states that are closely-spaced in temperature, electric, and magnetic field. We present experimental studies of the magnetic, electric, and structural properties of these two compounds. We include very new data up to 100 Ton Ca{sub 3}CoMnO{sub 6} that resolves a key controversy of over the magnetic structure and the size of the moments.

Zapf, Vivien [Los Alamos National Laboratory

2012-06-01T23:59:59.000Z

320

Hydrogen Storage in a Microporous Metal-Organic Framework with Exposed Mn2+ Coordination Sites  

E-Print Network (OSTI)

Hydrogen Storage in a Microporous Metal-Organic Framework with Exposed Mn2+ Coordination Sites and 90 bar, which at 60 g H2/L provides a storage density 85% of that of liquid hydrogen. The material-358. (2) EERE: Hydrogen, Fuel Cells, & Infrastructure Technologies Program Homepage, www.eere.energy

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321

Aliovalent titanium substitution in layered mixed Li Ni-Mn-Co oxides for lithium battery applications  

SciTech Connect

Improved electrochemical characteristics are observed for Li[Ni1/3Co1/3-yMyMn1/3]O2 cathode materials when M=Ti and y<0.07, compared to the baseline material, with up to 15percent increased discharge capacity.

Kam, Kinson; Doeff, Marca M.

2010-12-01T23:59:59.000Z

322

Local atomic and electronic structure in LaMnO{sub 3} across the orbital ordering transition  

SciTech Connect

The local atomic disorder and electronic structure in the environment of manganese atoms in LaMnO{sub 3} has been studied by x-ray absorption spectroscopy over a temperature range (300-870 K) covering the orbital ordering transition ({approx}710 K). The Mn-O distance splitting into short and long bonds (1.95 and 2.15 A) is kept across the transition temperature, so that the MnO{sub 6} octahedra remain locally Jahn-Teller distorted. Discontinuities in the Mn local structure are identified in the extended x-ray fine structure spectra at this temperature, associated with a reduction of the disorder in the superexchange angle and to the removal of the anisotropy in the radial disorder within the coordination shell. Subtle changes in the electronic local structure also take place at the Mn site at the transition temperature. The near-edge spectra show a small drop of the Mn 4p hole count and a small enhancement in the pre-edge structures at the transition temperature. These features are associated with an increase of the covalence of the Mn-O bonds. Our results shed light on the local electronic and structural phenomena in a model of order-disorder transition, where the cooperative distortion is overcome by the thermal disorder.

Souza, Raquel A.; Souza-Neto, Narcizo M.; Ramos, Aline Y.; Tolentino, Helio C.N.; Granado, Eduardo [Laboratorio Nacional de Luz Sincrotron (LNLS), P.O. Box 6192, 13084-971, Campinas, Sao Paulo, Brazil and (Brazil); Instituto de Fisica Gleb Wataghin, IFGW-UNICAMP, Campinas, SP (Brazil); Laboratorio Nacional de Luz Sincrotron (LNLS), P.O. Box 6192, 13084-971, Campinas, Sao Paulo, Brazil and (Brazil); Departamento de Fisica dos Materiais e Mecanica, DFMT-IF-USP, Sao Paulo, SP (Brazil); Laboratorio Nacional de Luz Sincrotron (LNLS), P.O. Box 6192, 13084-971, Campinas, Sao Paulo, Brazil and (Brazil); Laboratoire de Mineralogie-Cristallographie de Paris, LMCP-UMR 7590-CNRS, Paris (France); Laboratorio Nacional de Luz Sincrotron (LNLS), P.O. Box 6192, 13084-971, Campinas, Sao Paulo (Brazil); Laboratorio Nacional de Luz Sincrotron (LNLS), P.O. Box 6192, 13084-971, Campinas, Sao Paulo, Brazil and (Brazil); Instituto de Fisica Gleb Wataghin, IFGW-UNICAMP, Campinas, SP (Brazil)

2004-12-01T23:59:59.000Z

323

In situ synchrotron x-ray studies of LiMn{sub 2}O{sub 4} cathodes  

DOE Green Energy (OSTI)

LiCoO{sub 2} cathodes are now used in most commercial lithium ion batteries. LiMn{sub 2}O{sub 4} is an attractive low cost alternative. However, it is difficult to make reproducibly. At Brookhaven National Laboratory two in situ synchrotron x-ray techniques, that are available at the National Synchrotron Light Source (NSLS), have been used to investigate LiMn{sub 2}O{sub 4}. The techniques are x-ray absorption and high resolution x-ray diffraction. With x-ray absorption it is possible to follow the changes in the Mn oxidation state and the changes in the Mn-O and Mn-Mn bond lengths on cycling. Also it is possible to detect amorphous phases. The high energy x-rays at the diffraction Beam Lines at the NSLS (up to 24 KeV) permit in situ x-ray diffraction, in the transmission mode, in thin lithium and lithium ion cells. The evolution of the structural chances that occur on cycling can be followed. These in situ measurements were done on Li/LiMn{sub 2}O{sub 4} cells with a liquid electrolyte (1 M LiPF{sub 6} in a 1:1:3 PC:EC:DMC solvent).

McBreen, J.; Mukerjee, S.; Yang, X.Q. [and others

1997-05-01T23:59:59.000Z

324

Electrochemical and structural characterization of titanium-substituted manganese oxides based on Na0.44MnO2  

DOE Green Energy (OSTI)

A series of titanium-substituted manganese oxides, Li{sub x}Ti{sub y}Mn{sub 1-y}O{sub 2} (y = 0.11, 0.22, 0.33, 0.44, and 0.55) with the Na{sub 0.44}MnO{sub 2} structure were prepared from Na{sub x}Ti{sub y}Mn{sub 1-y}O{sub 2} (x {approx} 0.44) precursors. The electrochemical characteristics of these compounds, which retain the unique double-tunnel structure during ion exchange, were examined in lithium/polymer electrolyte cells operating at 85 C. All of the substituted cathode materials intercalated lithium reversibly, with Li{sub x}Ti{sub 0.22}Mn{sub 0.78}O{sub 2} exhibiting the highest capacity in polymer cells, about 10-20% greater than that of unsubstituted Li{sub x}MnO{sub 2} made from Na{sub 0.44}MnO{sub 2}. In common with Li{sub x}MnO{sub 2}, the Ti-substituted materials exhibited good capacity retention over one hundred or more cycles, with some compositions exhibiting a fade rate of less than 0.03% per cycle.

Doeff, Marca M.; Richardson, Thomas J.; Hwang, Kwang-Taek

2004-03-01T23:59:59.000Z

325

Magnetic order near 270 K in mineral and synthetic Mn{sub 2}FeSbO{sub 6} ilmenite  

SciTech Connect

The structural and magnetic properties of Mn{sub 2}FeSbO{sub 6} single-crystalline mineral and ceramic samples synthesized under thermobaric treatment have been investigated, and compared to theoretical predictions based on first-principles electronic structure calculations. This ilmenite system displays a sharp magnetic transition just below the room temperature related to a ferrimagnetic ordering of the Mn{sup 2+} and Fe{sup 3+} cations, which makes Mn{sub 2}FeSbO{sub 6} a promising candidate for designing functional magnetic materials.

Mathieu, R.; Hudl, M.; Nordblad, P. [Department of Engineering Sciences, Uppsala University, Box 534, SE-75121 Uppsala (Sweden); Ivanov, S. A. [Department of Engineering Sciences, Uppsala University, Box 534, SE-75121 Uppsala (Sweden); Department of Inorganic Materials, Karpov' Institute of Physical Chemistry, Vorontsovo pole, 10 105064, Moscow K-64 (Russian Federation); Bazuev, G. V. [Institute of Solid-State Chemistry, Ural Branch of the Russian Academy of Science, 620999, Ekaterinburg GSP-145 (Russian Federation); Lazor, P. [Department of Earth Sciences, Uppsala University, Villavaegen 16, SE-75236 Uppsala (Sweden); Solovyev, I. V. [National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047 (Japan)

2011-05-16T23:59:59.000Z

326

In situ X-ray absorption fine structure studies of a manganese dioxide electrode in a rechargeable MnO{sub 2}/Zn alkaline battery environment  

DOE Green Energy (OSTI)

Electronic and structural aspects of a MnO{sub 2} electrode in a rechargeable MnO{sub 2}/Zn battery environment have been investigated by in situ Mn K-edge X-ray absorption fine structure (XAFS). The relative amplitudes of the three major Fourier transform shells of the EXAFS (extended XAFS) function of the rechargeable MnO{sub 2} electrode in the undischarged state were found to be similar to those found for ramsdellite, a MnO{sub 2} polymorph with substantial corner-sharing linkages among the basic MnO{sub 6} octahedral units. The analyses of the background-subtracted pre-edge peaks and absorption edge regions for the nominally 1-e{sup {minus}} discharged electrode were consistent with Mn{sup 3+} as being the predominant constituent species, rather than a mixture of Mn{sup 4+} and Mn{sup 2+} sites. Furthermore, careful inspection of both the XANES (X-ray absorption near edge structure) and EXAFS indicated that the full recharge of MnO, which had been previously discharged either by a 1- or 2-equivalent corner-sharing linkages compared to the original undischarged MnO{sub 2}.

Mo, Y.; Hu, Y.; Bae, I.T.; Miller, B.; Scherson, D.A. [Case Western Reserve Univ., Cleveland, OH (United States). Dept. of Chemistry; Antonio, M.R. [Argonne National Lab., IL (United States). Chemistry Div.

1996-12-31T23:59:59.000Z

327

X-ray spectroscopic study of the charge state and local orderingof room-temperature ferromagnetic Mn oped ZnO  

Science Conference Proceedings (OSTI)

The charge state and local ordering of Mn doped into a pulsed laser deposited single-phase thin film of ZnO are investigated by using X-ray absorption spectroscopy at the O K-, Mn K- and L-edges, and X-ray emission spectroscopy at the O K- and Mn L-edge. This film is found to be ferromagnetic at room temperature. EXAFS measurement shows that Mn{sup 2+} replaces Zn site in tetrahedral symmetry, and there is no evidence for either metallic Mn or MnO in the film. Upon Mn doping, the top of O 2p valence band extends into the bandgap indicating additional charge carries being created.

Guo, J.-H.; Gupta, Amita; Sharma, Parmanand; Rao, K.V.; Marcus,M.A.; Dong, C.L.; Guillen, J.M.O.; Butorin, S.M.; Mattesini, M.; Glans,P.A.; Smith, K.E.; Chang, C.L.; Ahuja, R.

2007-08-07T23:59:59.000Z

328

" Million Housing Units, Final"  

U.S. Energy Information Administration (EIA) Indexed Site

9 Appliances in Homes in Midwest Region, Divisions, and States, 2009" 9 Appliances in Homes in Midwest Region, Divisions, and States, 2009" " Million Housing Units, Final" ,,"Midwest Census Region" ,,,"East North Central Census Division",,,,,"West North Central Census Division" ,,,"Total East North Central",,,,,"Total West North Central" ,"Total U.S.1 (millions)" ,,"Total Midwest",,,,," IN, OH",,,"IA, MN, ND, SD" "Appliances",,,,"IL","MI","WI",,,"MO",,"KS, NE" "Total Homes",113.6,25.9,17.9,4.8,3.8,2.3,7,8.1,2.3,3.9,1.8 "Cooking Appliances" "Stoves (Units With Both" "an Oven and a Cooktop)"

329

Slide 1  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

1-07 0 1-07 0 USS Honolulu (SSN 718) and Locals 280 miles from North Pole PROGRAM RECORD * Program founded in 1948 * 5,800 reactor- years of safe operations * 136,000,000 miles safely steamed * 103 operating naval reactors * Welcomed in over 150 ports worldwide and 50 countries BROAD RESPONSIBILITIES * Research, Development, Design * Acquisition, Specification, Construction, Testing * Operation, Training, Maintenance * Overhaul, Refueling, Disposal * Reactor Safety, Radiological Controls, Environmental Safety, Occupational Health * Security, Nuclear Safeguards, Transportation * Administration (Public Information) NAVAL NUCLEAR PROPULSION PROGRAM TEC 1-07 1 WA OR ID MT ND SD WY NE MN WI IA IL MI IN OH KY

330

The preparation of carbon nanotube/MnO2 composite fiber and its application to flexible micro-supercapacitor  

Science Conference Proceedings (OSTI)

In recent years, flexible electronic devices pursued for potential applications. The design and the fabrication of a novel flexible nanoarchitecture by coating electrical conductive MWCNT fiber with ultrathin films of MnO2 to achieve high ...

Li Li, Chen Chen, Jing Xie, Zehuai Shao, Fuxin Yang

2013-01-01T23:59:59.000Z

331

Synthesis and Electrochemical Properties of Monoclinic LiMnBO[subscript 3] as a Li Intercalation Material  

E-Print Network (OSTI)

We investigated the structural stability and electrochemical properties of LiMnBO3 in the hexagonal and monoclinic form with ab initio computations and, for the first time, report electrochemical data on monoclinic ...

Kim, Jae Chul

332

Synthesis and Electrochemical Properties of Monoclinic LiMnBO[subscript 3] as a Li Intercalation Material  

E-Print Network (OSTI)

We investigated the structural stability and electrochemical properties of LiMnBO[subscript 3] in the hexagonal and monoclinic form with ab initio computations and, for the first time, report electrochemical data on ...

Kim, Jae Chul

333

Thermal Stabilities of Delithiated Olivine MPO[subscript 4] (M=Fe,Mn) Cathodes investigated using First Principles Calculations  

E-Print Network (OSTI)

We present an analysis of the thermal reduction of delithiated LiMnPO[subscript 4] and LiFePO[subscript 4] based on the quarternary phase diagrams as calculated from first principles. Our results confirm the recent ...

Ong, Shyue Ping

334

Preparation of Mn{sub 2}SnO{sub 4} nanoparticles as the anode material for lithium secondary battery  

Science Conference Proceedings (OSTI)

The ultrafine Mn{sub 2}SnO{sub 4} nanoparticles with diameters of 5-10 nm have been prepared by thermal decomposition of precursor MnSn(OH){sub 6}. The MnSn(OH){sub 6} nanoparticles precursor was synthesized by a hydrothermal microemulsion method. X-ray diffraction, transmission electron microscopy, high-resolution transmission electron microscopy and electron diffraction have been employed to characterize the crystal structures and morphologies of the as-prepared samples. High-resolution transmission electron microscopy observations revealed that the as-synthesized nanoparticles were single crystals. The thermal characterization was studied by differential thermal analysis and thermogravimetry analysis measurements. Electrochemical test showed that the Mn{sub 2}SnO{sub 4} nanoparticles exhibited a high initial charge-discharge capacity of 1320 mAh/g.

Lei Shuijin [School of Materials Science and Engineering, Nanchang University, No. 999, Xuefu Avenue Honggutan New District, Nanchang, Jiangxi 330031 (China)], E-mail: shjlei@ncu.edu.cn; Tang Kaibin [Nanomaterial and Nanochemistry, Hefei National Laboratory for Physical Sciences at Micro-scale, University of Science and Technology of China, Hefei, Anhui 230026 (China)], E-mail: kbtang@ustc.edu.cn; Chen Chunhua; Jin Yi [Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026 (China); Zhou Lang [School of Materials Science and Engineering, Nanchang University, No. 999, Xuefu Avenue Honggutan New District, Nanchang, Jiangxi 330031 (China)

2009-02-04T23:59:59.000Z

335

Electrode properties of Mn2O3 nanospheres synthesized by combined sonochemical/solvothermal method for use in electrochemical capacitors  

Science Conference Proceedings (OSTI)

We report here an efficient single step combined sonochemical and solvothermal synthesis process to obtain bulk quantities of nanospherical particles of cubic Mn2O3 and characterized its pseudocapacitive characteristics in relevance ...

Teressa Nathan; Michael Cloke; S. R. S. Prabaharan

2008-01-01T23:59:59.000Z

336

Electrochemical and structural characterization of titanium-substituted manganese oxides based on Na0.44MnO2  

E-Print Network (OSTI)

by heating them in a molten salt- mixture of 68-mol% LiNOtakes place during the molten salt exchange. Because the850 C. c) prepared by molten salt exchange of Na x Ti y Mn

Doeff, Marca M.; Richardson, Thomas J.; Hwang, Kwang-Taek

2004-01-01T23:59:59.000Z

337

Synthesis and Electrochemical Characterization of M2Mn3O8 (M=Ca, Cu) Compounds and Derivatives  

E-Print Network (OSTI)

surprising, because the molten salt environment at elevatedthe product of the molten salt reaction can be considered tothat is formed during the molten salt reaction with Ca 2 Mn

Park, Yong Joon; Doeff, Marca M.

2005-01-01T23:59:59.000Z

338

U.S. Energy Information Administration | Annual Energy Outlook 2013  

Gasoline and Diesel Fuel Update (EIA)

2 2 Regional maps Figure F7. Coal demand regions Figure F7. Coal Demand Regions CT,MA,ME,NH,RI,VT OH 1. NE 3. S1 4. S2 5. GF 6. OH 7. EN AL,MS MN,ND,SD IA,NE,MO,KS TX,LA,OK,AR MT,WY,ID CO,UT,NV AZ,NM 9. AM 11. C2 12. WS 13. MT 14. CU 15. ZN WV,MD,DC,DE 2. YP Region Content Region Code NY,PA,NJ VA,NC,SC GA,FL IN,IL,MI,WI Region Content Region Code 14. CU 13. MT 16. PC 15. ZN 12. WS 11. C2 9. AM 5. GF 8. KT 4. S2 7. EN 6. OH 2. YP 1. NE 3. S1 10. C1 KY,TN 8. KT 16. PC AK,HI,WA,OR,CA 10. C1 CT,MA,ME,NH,RI,VT OH 1. NE 3. S1 4. S2 5. GF 6. OH 7. EN AL,MS MN,ND,SD IA,NE,MO,KS TX,LA,OK,AR MT,WY,ID CO,UT,NV AZ,NM 9. AM 11. C2 12. WS 13. MT 14. CU 15. ZN WV,MD,DC,DE 2. YP Region Content Region Code NY,PA,NJ VA,NC,SC GA,FL IN,IL,MI,WI Region Content Region Code 14. CU 13. MT

339

U.S. Energy Information Administration | Annual Energy Outlook 2011  

Gasoline and Diesel Fuel Update (EIA)

4 4 Regional maps Figure F7. Coal demand regions Figure F7. Coal Demand Regions CT,MA,ME,NH,RI,VT OH 1. NE 3. S1 4. S2 5. GF 6. OH 7. EN AL,MS MN,ND,SD IA,NE,MO,KS TX,LA,OK,AR MT,WY,ID CO,UT,NV AZ,NM 9. AM 11. C2 12. WS 13. MT 14. CU 15. ZN WV,MD,DC,DE 2. YP Region Content Region Code NY,PA,NJ VA,NC,SC GA,FL IN,IL,MI,WI Region Content Region Code 14. CU 13. MT 16. PC 15. ZN 12. WS 11. C2 9. AM 5. GF 8. KT 4. S2 7. EN 6. OH 2. YP 1. NE 3. S1 10. C1 KY,TN 8. KT 16. PC AK,HI,WA,OR,CA 10. C1 CT,MA,ME,NH,RI,VT OH 1. NE 3. S1 4. S2 5. GF 6. OH 7. EN AL,MS MN,ND,SD IA,NE,MO,KS TX,LA,OK,AR MT,WY,ID CO,UT,NV AZ,NM 9. AM 11. C2 12. WS 13. MT 14. CU 15. ZN WV,MD,DC,DE 2. YP Region Content Region Code NY,PA,NJ VA,NC,SC GA,FL IN,IL,MI,WI Region Content Region Code 14. CU 13. MT

340

DEPARTMENT OF ENERGY EERE PROJECT MN-IAGEMENT CENTER NEPA DETERMINATION  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

MN-IAGEMENT CENTER MN-IAGEMENT CENTER NEPA DETERMINATION Page 1 of4 RECIPIENT:A1aska Energy Authority STATE: AK PROJECT TITLE: Alaska Wind Energy PrOject Funding Opportunity Announcement Number PnK:urcmcntlnstrumcnl Numbcr NEPA Control Number CID Number DE-FG-36-05GOO85038 DE-FG-36-05GOO85038 GFO-G085038-002 G085038 Bastd on my review orthe information concuning the proposed adion, as NEPA Compliance Officer (authorized under DOE Order 45 1.IA), I have made the following determination: ex, EA. [IS APPENDIX AND NUMBER: Description: 61 .19 Microwave, Siting, construction, modification. operation, and removal of microwave, radio communication, and meteorological , meteorological towers and assOCIated facilities, prOVided that the towers and associated facilitJes would

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341

Optical transitions in MnGa{sub 2}Se{sub 4}  

Science Conference Proceedings (OSTI)

The dependence of the absorption coefficient on incident photon energy in a MnGa{sub 2}Se{sub 4} single crystal has been investigated in the temperature range 110-295 K. Using group-theory analysis of the electron state symmetry and comparison of the symmetry of the energy spectrum of MnGa{sub 2}Se{sub 4} and its isoelectronic analogs, a conclusion about the character of optical transitions has been drawn. It is shown that the features observed at 2.31 and 2.45 eV are related to the intracenter transitions {sup 6}A{sub 1}{sup 1} {yields} {sup 4}T{sub 2}({sup 4}G) and {sup 6}A{sub 1}{sup 2} {yields} {sup 4}T{sub 2}({sup 4}G). The {sup 6}A{sub 1} state is split by the crystal field.

Tagiev, B. G.; Kerimova, T. G., E-mail: ktaira@physics.ab.az; Tagiev, O. B.; Asadullayeva, S. G.; Mamedova, I. A. [National Academy of Sciences of Azerbaijan, Institute of Physics (Azerbaijan)

2012-06-15T23:59:59.000Z

342

RECIPIENT:Minnesota Department of Commerce, Office of Energy Security SEP ARRA STATE: MN  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Minnesota Department of Commerce, Office of Energy Security SEP ARRA STATE: MN Minnesota Department of Commerce, Office of Energy Security SEP ARRA STATE: MN PROJECT TITLE: SEP - Residential Ground Source Heat Pump Installation - Schmitz, Mary C. Funding Opportunity Announcement Number DE FOA 0000052 Procurement Instrument Number EE0000164 NEPA Control Number cm Number GFO-0000164-018 0 Based on my review of the information concerning the proposed action, as NEPA Compliance Officer (authorized under DOE Order 451.1A), I have made the following determination: CX, EA, EIS APPENDIX AND NUMBER: Description: 85.1 Actions to conserve energy, demonstrate potential energy conservation, and promote energy-efficiency that do not increase the indoor concentrations of potentially harmful substances. These actions may involve financial and technical

343

File:USDA-CE-Production-GIFmaps-MN.pdf | Open Energy Information  

Open Energy Info (EERE)

MN.pdf MN.pdf Jump to: navigation, search File File history File usage Minnesota Ethanol Plant Locations Size of this preview: 776 × 600 pixels. Full resolution ‎(1,650 × 1,275 pixels, file size: 311 KB, MIME type: application/pdf) Description Minnesota Ethanol Plant Locations Sources United States Department of Agriculture Related Technologies Biomass, Biofuels, Ethanol Creation Date 2010-01-19 Extent State Countries United States UN Region Northern America States Minnesota External links http://www.nass.usda.gov/Charts_and_Maps/Ethanol_Plants/ File history Click on a date/time to view the file as it appeared at that time. Date/Time Thumbnail Dimensions User Comment current 16:16, 27 December 2010 Thumbnail for version as of 16:16, 27 December 2010 1,650 × 1,275 (311 KB) MapBot (Talk | contribs) Automated bot upload

344

Charge Melting & Polaron Collapse in LA1.2SR1.8MN207  

NLE Websites -- All DOE Office Websites (Extended Search)

Charge Melting & Polaron Collapse in LA1.2SR1.8MN207 Charge Melting & Polaron Collapse in LA1.2SR1.8MN207 Recent studies carried out on the Synchrotron Radiation Instrumentation Collaborative Access Team's beamline I-ID-C at the Advanced Photon Source provide new insights into charge melting and polaron collapse. X-ray and neutron scattering measurements directly demonstrate the existence of polarons in the paramagnetic phase of optimally doped colossal magnetoresistive oxides. The polarons exhibit short-range correlations that grow with decreasing temperature, but disappear abruptly at the ferromagnetic transition because of the sudden charge delocalization. The "melting" of the charge ordering as we cool through TC occurs with the collapse of the quasistatic polaron scattering, and provides important new

345

High capacitive performance of nanostructured Mn-Ni-Co oxide composites for supercapacitor  

SciTech Connect

Nanostructured Mn-Ni-Co oxide composites (MNCO) were prepared by thermal decomposition of the precursor obtained by chemical co-precipitation of Mn, Ni and Co salts. The chemical composition and morphology were characterized by X-ray diffraction (XRD), energy dispersive spectroscopy (EDS) and scanning electron microscopy (SEM). The electrochemical capacitance of MNCO electrode was examined by cyclic voltammetry, impedance and galvanostatic charge-discharge measurements. The results showed that MNCO electrode exhibited the good electrochemical characteristics. A maximum capacitance value of 1260 F g{sup -1} could be obtained within the potential range of -0.1 to 0.4 V versus saturated calomel electrode (SCE) in 6 mol L{sup -1} KOH electrolyte.

Luo Jianmin [Institute of Applied Chemistry, Xinjiang University, Urumqi 830046 (China); Gao Bo [College of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016 (China); Zhang Xiaogang [College of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016 (China)], E-mail: azhangxg@163.com

2008-05-06T23:59:59.000Z

346

Structural and magnetic properties of MBE grown GeMnN2 thin films  

Science Conference Proceedings (OSTI)

Epitaxial GeMnN{sub 2} thin films are synthesized by plasma-assisted molecular beam epitaxy. Transmission electron microscopy and x-ray diffraction measurements confirm that it is the orthorhombic variant, consistent with the predictions of first-principles calculations. The magnetic properties of the films are related to defects, with samples grown under Ge-rich conditions exhibiting a net magnetic moment above room temperature. These results are explained by first-principles calculations, indicating that the preferential substitution of one magnetic sublattice of GeMnN{sub 2} by impurities and/or intrinsic defects such as Ge antisites produces a net magnetic moment in an antiferromagnetic background, and also introduces spin-polarized carriers near the Fermi level.

Liu, Y [University of Wisconsin, Milwaukee; Lazarov, V. K. [University of Wisconsin, Milwaukee; Cheung, S.H. [University of Wisconsin, Milwaukee; Keavney, D.J. [Argonne National Laboratory (ANL); Gai, Zheng [ORNL; Gajdardziska-Josifovska, M [University of Wisconsin, Milwaukee; Weinert, M [University of Wisconsin, Milwaukee; Li, Lian [University of Wisconsin, Milwaukee

2012-01-01T23:59:59.000Z

347

Irradiation-controlled giant magnetoresistance of PtMn-based spin valve  

Science Conference Proceedings (OSTI)

He{sup +}-ion irradiation resulted in the direct ordering of PtMn without postannealing. Samples were irradiated with 2 MeV He{sup +} ions and a beam current of 1.08 {mu}A/cm{sup 2} such that the corresponding surface temperature was 190 deg. C. The exchange bias direction was set in situ during irradiation in a field of 900 Oe. A high giant magnetoresistance (GMR) ratio of 11% was obtained in PtMn-based spin valves after He{sup +} irradiation. The GMR is completely eliminated after it is irradiated with oxygen ions at 42 keV. Combining He{sup +} with oxygen-ion irradiation can provide magnetic patterning for GMR sensors.

Huang, S.-H.; Lai, C.-H.; Chiang, C. C.; Yang, C.-H. [Department of Materials Science and Engineering, National Tsing Huang University, 101, Section 2, Kuang Fu Road, Hsinchu, Taiwan 30013 (China)

2006-04-15T23:59:59.000Z

348

FTIR and Raman Study of LixTiyMn1-y2(y=0,0.11) Cathodes in  

NLE Websites -- All DOE Office Websites (Extended Search)

FTIR and Raman Study of LixTiyMn1-y2(y=0,0.11) Cathodes in FTIR and Raman Study of LixTiyMn1-y2(y=0,0.11) Cathodes in Pyrrolidinium-based Ionic Liquid Electrolyte Systems Title FTIR and Raman Study of LixTiyMn1-y2(y=0,0.11) Cathodes in Pyrrolidinium-based Ionic Liquid Electrolyte Systems Publication Type Journal Article Year of Publication 2009 Authors Hardwick, Laurence J., Juliette A. Saint, Ivan T. Lucas, Marca M. Doeff, and Robert Kostecki Journal J. Electrochemical Society Volume 156 Issue 2 Pagination A120-A127 Keywords electrochemical electrodes, Fourier transform spectra, infrared spectra, lithium compounds, manganese compounds, Raman spectra, titanium compounds Abstract This work demonstrates the protective effect of partial titanium substitution in LixTi0.11Mn0.89O2 against surface decomposition in room-temperature ionic liquid (RTILs) cells. Raman microscopy and reflectance Fourier transform IR (FTIR) spectroscopy were used to analyze electrodes recovered from cycled Li/LixTiyMn1-yO2 (y=0,0.11) cells containing the 0.5mol/kg LiTFSI in P13FSI RTIL electrolyte. [TFSI=bis(trifluoromethanesulfonyl)imide .] Raman and FTIR spectra of cycled LixMnO2 cathodes showed many distinct bands that can be attributed to both the electrolyte and electrode decomposition products. The thickness of the amorphous porous layer on the LixMnO2 cathode increased during cycling. The surface degradation of LixMnO2 and precipitation of electrolyte decomposition products contributed to the film growth. Improved cycling behavior was observed in cells containing LixTi0.11Mn0.89O2 , yet Raman spectroscopy also showed possible surface degradation. The FTIR spectra of cycled LixMnO2 and LixTi0.11Mn0.89O2 cathodes displayed bands characteristic for LiSO3CF3 and Li2NSO2CF3 , which originate from the reaction of the TFSI anion with traces of water present in the cell.

349

LiFe(x)Mn(1-x)PO(4): A Cathode for Lithium-ion Batteries  

DOE Green Energy (OSTI)

The high redox potential of LiMnPO{sub 4}, {approx}4.0 vs. (Li{sup +}/Li), and its high theoretical capacity of 170 mAh g{sup -1} makes it a promising candidate to replace LiCoO{sub 2} as the cathode in Li-ion batteries. However, it has attracted little attention because of its severe kinetic problems during cycling. Introducing iron into crystalline LiMnPO{sub 4} generates a solid solution of LiFe{sub x}Mn{sub 1-x}PO{sub 4} and increases kinetics; hence, there is much interest in determining the Fe-to-Mn ratio that will optimize electrochemical performance. To this end, we synthesized a series of nanoporous LiFe{sub x}Mn{sub 1-x}PO{sub 4} compounds (with x = 0, 0.05, 0.1, 0.15, and 0.2), using an inexpensive solid-state reaction. The electrodes were characterized using X-ray diffraction and energy-dispersive spectroscopy to examine their crystal structure and elemental distribution. Scanning-, tunneling-, and transmission-electron microscopy (viz., SEM, STEM, and TEM) were employed to characterize the micromorphology of these materials; the carbon content was analyzed by thermogravimetric analyses (TGAs). We demonstrate that the electrochemical performance of LiFe{sub x}Mn{sub 1-x}PO{sub 4} rises continuously with increasing iron content. In situ synchrotron studies during cycling revealed a reversible structural change when lithium is inserted and extracted from the crystal structure. Further, introducing 20% iron (e.g., LiFe{sub 0.2}Mn{sub 0.8}PO{sub 4}) resulted in a promising capacity (138 mAh g{sup -1} at C/10), comparable to that previously reported for nano-LiMnPO{sub 4}.

J Hong; F Wang; X Wang; J Graetz

2011-12-31T23:59:59.000Z

350

Modeling, synthesis and characterization of LiMn{sub 2}O{sub 4} spinels  

DOE Green Energy (OSTI)

The authors report on an integrated program to understand the fundamentals of LiMn{sub 2}O{sub 4} performance as a cathode for lithium ion rechargeable batteries. Specifically, this program is designed to address the effects of doping on the crystal chemistry, lattice constants, and electrochemical performance. The work is being expanded to include studies on LiCoO{sub 2} and LiNiO{sub 2}.

Doughty, D.H.; Ingersoll, D.; Cygan, R.T.; Westrich, H.R.; Rodriguez, M.A.; Boyle, T.J.; Voigt, J.A. [Sandia National Labs., Albuquerque, NM (United States); Johnson, B.J. [3M Co., St. Paul, MN (United States). Specialty Chemicals Div.

1997-11-01T23:59:59.000Z

351

Annealing effect on the giant magnetoresistance of La-Ca-Mn-O thin films  

SciTech Connect

Thin films of perovskite-like (La,Ca)MnO{sub {delta}} with (001) orientation were grown epitaxially on (100) MgO substrates by a simple facing-target sputtering technique. The as-deposited films already possess a significant low field giant magnetoresistance. Further post-annealing experiments on these samples indicate that the high electrical resistivity is not a prerequisite of the giant magnetoresistance effect.

Zeng, X.T.; Wong, H.K. [Chinese Univ. of Hong Kong, Chatin (Hong Kong). Physics Dept.

1995-11-01T23:59:59.000Z

352

Elastic Properties of the Zintl Ferromagnet Yb14MnSb11  

SciTech Connect

We report measurements of the elastic moduli as a function of temperature (5-300) K and magnetic field (0-2 T) for the Zintl ferromagnet Yb{sub 14}MnSb{sub 11}, which is believed to be a rare example of an underscreened Kondo lattice. The elastic moduli measured below the Curie temperature in this complex ferromagnet exhibit unusual lattice stiffening that is independent of the magnetic field and can be adequately modeled using the Landau theory.

Bhattacharya, Sriparna [University of Tennessee, Knoxville (UTK); Marinescu, D. C. [Clemson University; Morris, James R [ORNL; Sergienko, Ivan A [ORNL; Sales, Brian C [ORNL; Mandrus, D. [University of Tennessee, Knoxville (UTK) & Oak Ridge National Laboratory (ORNL); Keppens, V. [University of Tennessee, Knoxville (UTK)

2012-01-01T23:59:59.000Z

353

Research Needs for Magnetic Fusion Energy Sciences. Report of the Research Needs Workshop (ReNeW) Bethesda, Maryland, June 8-12, 2009  

SciTech Connect

Nuclear fusion - the process that powers the sun - offers an environmentally benign, intrinsically safe energy source with an abundant supply of low-cost fuel. It is the focus of an international research program, including the ITE R fusion collaboration, which involves seven parties representing half the world's population. The realization of fusion power would change the economics and ecology of energy production as profoundly as petroleum exploitation did two centuries ago. The 21st century finds fusion research in a transformed landscape. The worldwide fusion community broadly agrees that the science has advanced to the point where an aggressive action plan, aimed at the remaining barriers to practical fusion energy, is warranted. At the same time, and largely because of its scientific advance, the program faces new challenges; above all it is challenged to demonstrate the timeliness of its promised benefits. In response to this changed landscape, the Office of Fusion Energy Sciences (OFES ) in the US Department of Energy commissioned a number of community-based studies of the key scientific and technical foci of magnetic fusion research. The Research Needs Workshop (ReNeW) for Magnetic Fusion Energy Sciences is a capstone to these studies. In the context of magnetic fusion energy, ReNeW surveyed the issues identified in previous studies, and used them as a starting point to define and characterize the research activities that the advance of fusion as a practical energy source will require. Thus, ReNeW's task was to identify (1) the scientific and technological research frontiers of the fusion program, and, especially, (2) a set of activities that will most effectively advance those frontiers. (Note that ReNeW was not charged with developing a strategic plan or timeline for the implementation of fusion power.) This Report presents a portfolio of research activities for US research in magnetic fusion for the next two decades. It is intended to provide a strategic framework for realizing practical fusion energy. The portfolio is the product of ten months of fusion-community study and discussion, culminating in a Workshop held in Bethesda, Maryland, from June 8 to June 12, 2009. The Workshop involved some 200 scientists from Universities, National Laboratories and private industry, including several scientists from outside the US. Largely following the Basic Research Needs model established by the Office of Basic Energy Sciences (BES ), the Report presents a collection of discrete research activities, here called 'thrusts.' Each thrust is based on an explicitly identified question, or coherent set of questions, on the frontier of fusion science. It presents a strategy to find the needed answers, combining the necessary intellectual and hardware tools, experimental facilities, and computational resources into an integrated, focused program. The thrusts should be viewed as building blocks for a fusion program plan whose overall structure will be developed by OFES , using whatever additional community input it requests. Part I of the Report reviews the issues identified in previous fusion-community studies, which systematically identified the key research issues and described them in considerable detail. It then considers in some detail the scientific and technical means that can be used to address these is sues. It ends by showing how these various research requirements are organized into a set of eighteen thrusts. Part II presents a detailed and self-contained discussion of each thrust, including the goals, required facilities and tools for each. This Executive Summary focuses on a survey of the ReNeW thrusts. The following brief review of fusion science is intended to provide context for that survey. A more detailed discussion of fusion science can be found in an Appendix to this Summary, entitled 'A Fusion Primer.'

None

2009-06-08T23:59:59.000Z

354

Research Needs for Magnetic Fusion Energy Sciences. Report of the Research Needs Workshop (ReNeW) Bethesda, Maryland, June 8-12, 2009  

SciTech Connect

Nuclear fusion - the process that powers the sun - offers an environmentally benign, intrinsically safe energy source with an abundant supply of low-cost fuel. It is the focus of an international research program, including the ITE R fusion collaboration, which involves seven parties representing half the world's population. The realization of fusion power would change the economics and ecology of energy production as profoundly as petroleum exploitation did two centuries ago. The 21st century finds fusion research in a transformed landscape. The worldwide fusion community broadly agrees that the science has advanced to the point where an aggressive action plan, aimed at the remaining barriers to practical fusion energy, is warranted. At the same time, and largely because of its scientific advance, the program faces new challenges; above all it is challenged to demonstrate the timeliness of its promised benefits. In response to this changed landscape, the Office of Fusion Energy Sciences (OFES ) in the US Department of Energy commissioned a number of community-based studies of the key scientific and technical foci of magnetic fusion research. The Research Needs Workshop (ReNeW) for Magnetic Fusion Energy Sciences is a capstone to these studies. In the context of magnetic fusion energy, ReNeW surveyed the issues identified in previous studies, and used them as a starting point to define and characterize the research activities that the advance of fusion as a practical energy source will require. Thus, ReNeW's task was to identify (1) the scientific and technological research frontiers of the fusion program, and, especially, (2) a set of activities that will most effectively advance those frontiers. (Note that ReNeW was not charged with developing a strategic plan or timeline for the implementation of fusion power.) This Report presents a portfolio of research activities for US research in magnetic fusion for the next two decades. It is intended to provide a strategic framework for realizing practical fusion energy. The portfolio is the product of ten months of fusion-community study and discussion, culminating in a Workshop held in Bethesda, Maryland, from June 8 to June 12, 2009. The Workshop involved some 200 scientists from Universities, National Laboratories and private industry, including several scientists from outside the US. Largely following the Basic Research Needs model established by the Office of Basic Energy Sciences (BES ), the Report presents a collection of discrete research activities, here called 'thrusts.' Each thrust is based on an explicitly identified question, or coherent set of questions, on the frontier of fusion science. It presents a strategy to find the needed answers, combining the necessary intellectual and hardware tools, experimental facilities, and computational resources into an integrated, focused program. The thrusts should be viewed as building blocks for a fusion program plan whose overall structure will be developed by OFES , using whatever additional community input it requests. Part I of the Report reviews the issues identified in previous fusion-community studies, which systematically identified the key research issues and described them in considerable detail. It then considers in some detail the scientific and technical means that can be used to address these is sues. It ends by showing how these various research requirements are organized into a set of eighteen thrusts. Part II presents a detailed and self-contained discussion of each thrust, including the goals, required facilities and tools for each. This Executive Summary focuses on a survey of the ReNeW thrusts. The following brief review of fusion science is intended to provide context for that survey. A more detailed discussion of fusion science can be found in an Appendix to this Summary, entitled 'A Fusion Primer.'

2009-06-08T23:59:59.000Z

355

Inhomogeneous distribution of mercury on the surfaces of rapidly rotating HgMn stars  

E-Print Network (OSTI)

Starspots are usually associated with the action of magnetic fields at the stellar surfaces. However, recently an inhomogeneous chemical distribution of mercury was found for the mercury-manganese (HgMn) star alpha And -- a well-established member of a non-magnetic subclass of the chemically peculiar stars of the upper main sequence. In this study we present first results of the high-resolution survey of the HgII 3984 resonance line in the spectra of rapidly rotating HgMn stars with atmospheric parameters similar to those of alpha And. We use spectrum synthesis modelling and take advantage of the Doppler resolution of the stellar surfaces to probe horizontal structure of mercury distribution. Clear signatures of spots are found in the HgII 3984 line profiles of HR 1185 and HR 8723. Two observations of the latter star separated by two days give evidence for the line profile variability. We conclude that inhomogeneous distribution of Hg is a common phenomenon for the rapidly rotating HgMn stars in the 13000--13800 K effective temperature range independently of the stellar evolutionary stage. These results establish existence of a new class of spectrum variable spotted B-type stars. It is suggested that the observed Hg inhomogeneities arise from dynamical instabilities in the chemical diffusion processes and are unrelated to magnetic phenomena.

O. Kochukhov; N. Piskunov; M. Sachkov; D. Kudryavtsev

2005-05-06T23:59:59.000Z

356

Thin-film Li-LiMn{sub 2}O{sub 4} batteries  

DOE Green Energy (OSTI)

Thin-film rechargeable Li-LiMn{sub 2}O{sub 4} batteries have been fabricated and characterized. Following deposition by electron beam evaporation of LiMn{sub 2}O{sub 4}, the amorphous as-deposited cathode films 1 cm{sup 2} in area by 0.3 to 4 {mu}m thick were annealed at 700{degree}C to 800{degree}C in oxygen in order to form the crystalline spinel phase. The capacity of the cells between 4.5 V to 3.8 V depended on the annealing conditions and ranged from 50 {mu}Ah/mg to 120 {mu}Ah/mg. When cycled over this range, the batteries exhibited excellent secondary performance with capacity losses as low as 0.001% per cycle. On charging to 5.3 V, a plateau with a median voltage of 5.1 V was observed. The total charge extracted between 3.8 V to 5.3 V corresponded to about 1Li/Mn{sub 2}O{sub 4}.

Bates, J.B.; Lubben, D.; Dudney, N.J.

1994-11-01T23:59:59.000Z

357

Redox Active Layer-by-Layer Structures containing MnO2 Nanoparticles  

Science Conference Proceedings (OSTI)

Nanoscale materials provide unique properties that will enable new technologies and enhance older ones. One area of intense activity in which nanoscale materials are being used is in the development of new functional materials for battery applications. This effort promises superior materials with properties that circumvent many of the problems associated with traditional battery materials. Previously we have worked on several approaches for using nanoscale materials for application as cathode materials in rechargeable Li batteries. Our recent work has focused on synthesizing MnO2 nanoparticles and using these in layer-by-layer (LbL) structures to probe the redox properties of the nanoparticles. We show that the aqueous colloidal nanoparticles produced by butanol reduction of tetramethylammonium permanganate can be trapped in thin films using a layer-by-layer deposition approach, and that these films are both redox active and exhibit kinetically facile electrochemical responses. We show cyclic voltammetry of MnO2 colloidal nanoparticles entrapped in a LbL thin film at an ITO electrode surface using poly(diallyldimethylammonium chloride) (PDDA). CV experiments demonstrate that Li+ insertion accompanies Mn(IV) reduction in LiClO4 supporting electrolytes, and that reduction is hindered in supporting electrolytes containing only tetrabutylammonium cations. We also show that electron propagation through multilayer films is facile, suggesting that electrons percolate through the films via electron exchange between nanoparticles.

Bazito, Fernanda; O'Brien, Robert; Buttry, Daniel A.

2005-02-01T23:59:59.000Z

358

Development of (Mn,Co)3O4 Protection Layers for Ferritic Stainless Steel Interconnects  

DOE Green Energy (OSTI)

A spinel-based surface protection layer has been developed for alloy SOFC current collectors and bi-polar gas separators. The (Mn,Co)3O4 spinel with a nominal composition of Mn1.5Co1.5O4 demonstrates an excellent electrical conductivity and thermal expansion match to ferritic stainless steel interconnects. A slurry-coating technique provides a viable approach for fabricating protective layers of the spinel onto the steel interconnects. Thermally grown protection layers of Mn1.5Co1.5O4 have been found not only to significantly decrease the contact resistance between a LSF cathode and stainless steel interconnect, but also inhibits the sub-scale growth on the stainless steel. The combination of the inhibited sub-scale growth, good thermal expansion matching between the spinel and the stainless steel, and the closed-pore structure contribute to the excellent structural and thermomechanical stability of these spinel protection layers, which was verified by a long-term thermal-cycling test. The spinel protection layers can also act effectively to prevent outward diffusion of chromium from the interconnect alloy, preventing subsequent chromium migration into the cathode and contact materials. PNNL is currently engaged in studies intended to optimize the composition, microstructure, and fabrication procedure for the spinel protection layers.

Yang, Zhenguo; Simner, Steven P.; Singh, Prabhakar; Xia, Guanguang; Stevenson, Jeffry W.

2005-07-05T23:59:59.000Z

359

Investigation of the Charge Collection Efficiency of CdMnTe Radiation Detectors  

SciTech Connect

This paper presents the growth, fabrication and characterization of indium-doped cadmium manganese telluride (CdMnTe) crystals grown by the vertical Bridgman technique. The 10 x 10 x 1.9 mm{sup 3} samples have been fabricated, and the charge collection properties of the CdMnTe detectors have been measured. Alpha-particle spectroscopy measurements have yielded an average charge collection efficiency approaching 100%. Ion beam induced charge (IBIC) measurements have been performed by raster scanning focused 5.5 MeV {sup 4}He beams onto the detectors. Spatially resolved charge collection efficiency maps have been produced for a range of detector bias voltages. Inhomogeneities in the charge transport of the CdMnTe crystals have been associated with chains of Te inclusions within the detector bulk, and the reduction in charge collection efficiency in their locality has been quantified. It has been shown that the role of Te inclusions in degrading charge collection is reduced with increasing values of bias voltage. IBIC measurements for a range of low biases have highlighted the evolution of the charge collection uniformity across the detectors.

Bolotnikov A.; Rafiei, R.; Boardman, D.; Sarbutt, A.; Prokopovich, A.; Kim, K.; Reinhard, M.I.; James, R.B.

2012-06-01T23:59:59.000Z

360

Carriers-mediated ferromagnetic enhancement in Al-doped ZnMnO dilute magnetic semiconductors  

SciTech Connect

Nano-crystalline Zn{sub 0.95-x}Mn{sub 0.05}Al{sub x}O (x = 0, 0.05, 0.10) dilute magnetic semiconductors (DMS) were synthesized by sol-gel derived auto-combustion. X-ray diffraction (XRD) analysis shows that the samples have pure wurtzite structure typical of ZnO without the formation of secondary phases or impurity. Crystallite sizes were approximated by Scherrer formula while surface morphology and grain sizes were measured by field emission scanning electron microscopy. Incorporation of Mn and Al into the ZnO structure was confirmed by energy-dispersive X-ray analysis. Temperature dependent electrical resistivity measurements showed a decreasing trend with the doping of Al in ZnMnO, which is attributable to the enhancement of free carriers. Vibrating sample magnetometer studies confirmed the presence of ferromagnetic behavior at room temperature. The results indicate that Al doping results in significant variation in the concentration of free carriers and correspondingly the carrier-mediated magnetization and room temperature ferromagnetic behavior, showing promise for practical applications. We attribute the enhanced saturation magnetization and electrical conductivity to the exchange interaction mediated by free electrons.

Saleem, Murtaza [Centre of Excellence in Solid State Physics, University of the Punjab, Lahore-54590 (Pakistan); Siddiqi, Saadat A. [Centre of Excellence in Solid State Physics, University of the Punjab, Lahore-54590 (Pakistan); Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS Institute of Information Technology, Defence Road, Off Raiwind Road, Lahore (Pakistan); Atiq, Shahid, E-mail: shahidatiqpasrur@yahoo.com [Centre of Excellence in Solid State Physics, University of the Punjab, Lahore-54590 (Pakistan); Anwar, M. Sabieh; Hussain, Irshad [School of Science and Engineering (SSE), Lahore University of Management Sciences (LUMS), Opposite Sector U, D.H.A. Lahore Cantt-54792 (Pakistan); Alam, Shahzad [Pakistan Council for Scientific and Industrial Research (PCSIR) Laboratories Complex, Lahore (Pakistan)

2011-11-15T23:59:59.000Z

Note: This page contains sample records for the topic "ne sd mn" from the National Library of EnergyBeta (NLEBeta).
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361

Mn-doped Ga(As,P) and (Al,Ga)As ferromagnetic semiconductors: Electronic structure calculations  

E-Print Network (OSTI)

A remarkable progress towards functional ferromagnetic semiconductor materials for spintronics has been achieved in p-type (Ga,Mn)As. Robust hole-mediated ferromagnetism has, however, been observed also in other III-V hosts such as antimonides, GaP, or (Al,Ga)As, which opens a wide area of possibilities for optimizing the host composition towards higher ferromagnetic Curie temperatures. Here we explore theoretically hole-mediated ferromagnetism and Mn incorporation in Ga(As,P) and (Al,Ga)As ternary hosts. While alloying (Ga,Mn)As with Al has only a small effect on the Curie temperature we predict a sizable enhancement of Curie temperatures in the smaller lattice constant Ga(As,P) hosts. Mn-doped Ga(As,P) is also favorable, as compared to (Al,Ga)As, with respect to the formation of carrier and moment compensating interstitial Mn impurities. In (Ga,Mn) (As,P) we find a marked decrease of the partial concentration of these detrimental impurities with increasing P content.

Masek, J.; Kudrnovsky, J.; Maca, F.; Sinova, Jairo; MacDonald, A. H.; Campion, R. P.; Gallagher, B. L.; Jungwirth, T.

2007-01-01T23:59:59.000Z

362

Fischer Tropsch synthesis : influence of Mn on the carburization rates and activities of Fe-based catalysts by TPR-EXAFS/XANES and catalyst testing.  

Science Conference Proceedings (OSTI)

Fe-based catalysts containing different amounts of Mn were tested for Fischer-Tropsch synthesis using a stirred tank reactor at 270 C, 1.21 MPa, and H{sub 2}:CO = 0.7. Catalyst activation by carburization with 10% CO/He was followed by Temperature Programmed Reduction/X-ray Absorption Spectroscopy (TPR-EXAFS/XANES) from room temperature to 300 C. {gamma}-Fe{sub 2}O{sub 3} was converted into iron carbides, whereas MnO{sub x} was reduced to oxygen deficient MnO. Mn hindered Fe carburization, such that the carburized catalyst displayed higher Fe{sub 3}O{sub 4} content than the catalyst without Mn. EXAFS fitting indicates that the carburized catalyst contained a mixture of Hgg carbide, Fe{sub 3}O{sub 4}, and Mn oxides. Increasing Mn content led to higher CH{sub 4} and light product selectivities, and lower light olefin selectivities. Higher and stable conversions were obtained with a catalyst containing an almost equimolar Fe/Mn ratio relative to the catalyst without Mn. Selectivity trends are attributed to the higher WGS rates observed on the FeMn catalysts, consistent with the structural differences observed.

Ribeiro, M. C.; Jacobs, G.; Pendyala, R.; Davis, B. H.; Cronauer, D. C.; Kropf, A. J.; Marshall, C. L. (Chemical Sciences and Engineering Division); (Univ. of Kentucky)

2011-03-24T23:59:59.000Z

363

Ab initio calculations and synthesis of the off-stoichiometric half-Heusler phase Ni{sub 1-x}Mn{sub 1+x}Sb  

SciTech Connect

We perform a combined theoretical and experimental study of the phase stability and magnetism of the off-stoichiometric Ni{sub 1-x}Mn{sub 1+x}Sb in the half-Heusler crystal phase. Our work is motivated by the need for strategies to engineer the magnetism of potentially half-metallic materials, such as NiMnSb, for improved performance at elevated temperatures. By means of ab initio calculations we investigate Ni{sub 1-x}Mn{sub 1+x}Sb over the whole composition range 0{<=}x{<=}1 of Ni replacing Mn and show that at relevant temperatures, the half-Heusler phase should be thermodynamically stable up to at least x=0.20 with respect to the competing C38 structure of Mn{sub 2}Sb. Furthermore we find that half-Heusler Ni{sub 1-x}Mn{sub 1+x}Sb retains half-metallic band structure over the whole concentration range and that the magnetic moments of substitutional Mn{sub Ni} atoms display magnetic exchange interactions an order of magnitude larger than the Ni-Mn interaction in NiMnSb. We also demonstrate experimentally that the alloys indeed can be created by synthesizing off-stoichiometric Ni{sub 1-x}Mn{sub 1+x}Sb films on MgO substrates by means of magnetron sputtering.

Ekholm, M.; Larsson, P.; Alling, B.; Helmersson, U.; Abrikosov, I. A. [Department of Physics, Chemistry and Biology (IFM), Linkoeping University, SE-58183 Linkoeping (Sweden)

2010-11-15T23:59:59.000Z

364

Why MnIn{sub 2}O{sub 4} spinel is not a transparent conducting oxide?  

SciTech Connect

The title compound has been synthesized by a citrate technique. The crystal structure has been investigated at room temperature from high-resolution neutron powder diffraction (NPD) data. It crystallizes in a cubic spinel structure, space group Fd3-bar m, Z=8, with a=9.0008(1) A at 295 K. It exhibits a crystallographic formula (Mn{sub 0.924(2)}In{sub 0.076(2)}){sub 8a}(In{sub 1.804(2)}Mn{sub 0.196(2)}){sub 16d}O{sub 4}, where 8a and 16d stand for the tetrahedral and octahedral sites of the spinel structure, respectively, with a slight degree of inversion, {lambda}=0.08. MnIn{sub 2}O{sub 4} shows antiferromagnetic interactions below T{sub N} Almost-Equal-To 40 K, due to the statistical distribution of Mn ions over the two available sites. Unlike the related MgIn{sub 2}O{sub 4} and CdIn{sub 2}O{sub 4} spinels, well known as transparent conducting oxides, MnIn{sub 2}O{sub 4} is not transparent and shows a poor conductivity ({sigma}=0.38 S cm{sup -1} at 1123 K): the presence of Mn ions, able to adopt mixed valence states, localizes the charges that, otherwise, would be delocalized in the spinel conduction band. - Graphical Abstract: From NPD data the crystallographic formula (Mn{sub 0.924(2)}In{sub 0.076(2)}){sub 8a}(In{sub 1.804(2)}Mn{sub 0.196(2)}){sub 16d}O{sub 4}, shows a slight degree of inversion, {lambda}=0.08 and a certain In deficiency. The presence of Mn ions, able to adopt mixed oxidation states, localize the charges that, otherwise, would be delocalized in the spinel conduction band; the presence of localized Mn{sup 2+} and Mn{sup 3+} ions provides the characteristic brown color. Highlights: Black-Right-Pointing-Pointer Accurate structural determination from NPD data: inversion degree (8%), and In deficiency. Black-Right-Pointing-Pointer Bond-valence indicates Mn{sup 2+}-Mn{sup 3+} ions; edge-sharing octahedra contain 90% In{sup 3+}+10% Mn{sup 3+} cations. Black-Right-Pointing-Pointer Conductivity several orders of magnitude lower than those of MgIn{sub 2}O{sub 4} or CdIn{sub 2}O{sub 4}. Black-Right-Pointing-Pointer Variability of Mn oxidation states cancels any electron-doping effect, emptying conduction band of mobile charge carriers. Black-Right-Pointing-Pointer Curie-Weiss behavior confirming the determined charge distribution.

Martinez-Lope, M.J. [Instituto de Ciencia de Materiales de Madrid, C.S.I.C., Cantoblanco E-28049 Madrid (Spain); Retuerto, M. [Instituto de Ciencia de Materiales de Madrid, C.S.I.C., Cantoblanco E-28049 Madrid (Spain); Department of Chemistry, Rutgers State University of New Jersey, Piscataway, NJ 08854-8087 (United States); Calle, C. de la [Instituto de Ciencia de Materiales de Madrid, C.S.I.C., Cantoblanco E-28049 Madrid (Spain); Porcher, Florence [Laboratoire Leon Brillouin, CEA/Saclay, 91191 Gif Sur Ivette Cedex, France. (France); Alonso, J.A., E-mail: ja.alonso@icmm.csic.es [Instituto de Ciencia de Materiales de Madrid, C.S.I.C., Cantoblanco E-28049 Madrid (Spain)

2012-03-15T23:59:59.000Z

365

Direct total cross section measurement of the {sup 16}O({alpha}, {gamma}){sup 20}Ne reaction at E{sub c.m.}=2.26 MeV  

Science Conference Proceedings (OSTI)

In stellar helium burning, {sup 16}O represents the endpoint of the helium-burning sequence due to the low rate of {sup 16}O({alpha},{gamma}){sup 20}Ne. We present a new direct measurement of the total capture reaction rate of {sup 16}O({alpha},{gamma}){sup 20}Ne at E{sub c.m.}=2.26 MeV employing the DRAGON recoil separator. For the first time, the total S factor and its contributing direct capture transitions could be determined in one experiment.

Hager, U.; Greife, U. [Colorado School of Mines, Golden, Colorado (United States); Brown, J. R. [Department of Physics, University of York, York, YO10 5DD (United Kingdom); Buchmann, L.; Fallis, J.; Hutcheon, D.; Ottewell, D.; Ruiz, C.; Sjue, S. [TRIUMF, Vancouver, Canada V6T 2A3 (Canada); Carmona-Gallardo, M. [Instituto de Estructura de la Materia, CSIC E-28006 Madrid (Spain); Erikson, L. [Pacific Northwest National Laboratory, Richland, WA (United States); Vockenhuber, C. [ETH Zurich, Zurich (Switzerland)

2011-08-15T23:59:59.000Z

366

In situ XRD Studies of Li-ion Cells with Mixed LiMn2O4 and LiCo1/3Ni1/3Mn1/3O2 Composite Cathode  

Science Conference Proceedings (OSTI)

The structural changes of the composite cathode made by mixing spinel LiMn2O4 and layered LiNi1/3Co1/3Mn1/3O2 in 1:1 wt% in both Li-half and Li-ion cells during charge/discharge are studied by in situ XRD. During the first charge up to {approx}5.2 V vs. Li/Li+, the in situ XRD spectra for the composite cathode in the Li-half cell track the structural changes of each component. At the early stage of charge, the lithium extraction takes place in the LiNi1/3Co1/3Mn1/3O2 component only. When the cell voltage reaches at {approx}4.0 V vs. Li/Li+, lithium extraction from the spinel LiMn2O4 component starts and becomes the major contributor for the cell capacity due to the higher rate capability of LiMn2O4. When the voltage passed 4.3 V, the major structural changes are from the LiNi1/3Co1/3Mn1/3O2 component, while the LiMn2O4 component is almost unchanged. In the Li-ion cell using a MCMB anode and a composite cathode cycled between 2.5 V and 4.2 V, the structural changes are dominated by the spinel LiMn2O4 component, with much less changes in the layered LiNi1/3Co1/3Mn1/3O2 component, comparing with the Li-half cell results. These results give us valuable information about the structural changes relating to the contributions of each individual component to the cell capacity at certain charge/discharge state, which are helpful in designing and optimizing the composite cathode using spinel- and layered-type materials for Li-ion battery research.

Nam, K.; Yoon, W; Shin, H; Chung, K; Choi, S; Yang, X

2009-01-01T23:59:59.000Z

367

Clouds, Aerosols and Precipitation in the Marine Boundary Layer (CAP-MBL) AMF Deployment Graciosa Island, Azores, NE Atlantic Ocean May 2009-December 2010  

NLE Websites -- All DOE Office Websites (Extended Search)

the Marine Boundary Layer (CAP-MBL) Graciosa Island, Azores, NE Atlantic Ocean May 2009-December 2010 Rob Wood, University of Washington CAP-MBL Proposal Team AMF Deployment Team Thanks to Mark Miller: AMF Site Scientist Kim Nitschke: AMF Site Manager Importance of Low-Clouds for Climate Imperative that we understand the processes controlling the formation, maintenance and dissipation of low clouds in order to improve their representation in climate models. Which clouds matter for climate sensitivity? Climate Feedbacks Model Intercomparison Project (CFMIP) 12 slab ocean models 2xCO 2 - control Correlation of global mean CRF with local values Mark Webb, Hadley Center 90 N 45 N 0 45 S 90S 0 90 E 180 90 W 0

368

REP&" TO A~NOF: NE-23 SUBJECT: Commercial Facilities Used by National Lead Company of Ohio iin Support  

Office of Legacy Management (LM)

tifr'itG!'l' &i&s Coverament tifr'itG!'l' &i&s Coverament --_ , ,&,.i +.&r, ,' ,T.L ' Department of Energy / REP&" TO A~NOF: NE-23 SUBJECT: Commercial Facilities Used by National Lead Company of Ohio iin Support of FMPC Operations TO: Robert E. Lynch Procuremnent and Contracts Division, AD-42 Oak Ridge Operations Office , / I I The Division of Facility and Site Oecomnissioning Projects (OF%) is responsible for managing the Department's Formerly Utilized Sites Remedial Action Program (FUSRAP). The purposes of FUSRAP are (1) to identify facilities formerly operated for or by the Manhattan Engineer District (WED) and Atomic Energy Commission (AEC) which may have been'radioactively contaminated as a result of these operations, (5) to determine if the

369

Enhanced T-lymphocyte blastogenic response to tuberculin (PPD) in children of northeast (NE) Thailand supplemented with vitamin A (VA) and zinc (Zn)  

SciTech Connect

Beneficial effects of Va and/or Zn supplementation of children in NE Thailand are described in a companion abstract. In the same study, blastogenic response (BR) of T-lymphocytes to concanavalin-A (ConA) and PPD were assayed in cultures containing mononuclear cells (MNC) or whole blood (WB). Methods were previously described. Children were previously vaccinated with BCG. BR to ConA of MNC or WB from children supplemented with VA, Zn, VA + Zn or placebo were similar. BR to PPD of MNC was higher in children receiving VA + Zn than placebo, but not in children supplemented with VA or Zn alone. Data indicate that children with suboptimal VA and Zn nutriture supplemented with < 2 times RDA of these nutrients showed enhanced cellular immunity to PPD. This observation is relevant to BCG immunization program and thus may benefit public health.

Kramer, T.R.; Udomkesmalee, E.; Dhanamitta, S.; Sirisinha, S.; Charoenkiatkul, S.; Tantipopipat, S.; Banjong, O.; Rojroongwasinkul, N.; Smith, J.C. Jr. (Dept. of Agriculture, Beltsville, MD (United States) Mahidol Univ., Nakhon Pathom (Thailand))

1991-03-15T23:59:59.000Z

370

Idaho National Laboratory Ten-year Site Plan (2012 through 2021) -- DOE-NE's National Nuclear Capability -- Developing and Maintaining the INL Infrastructure  

Science Conference Proceedings (OSTI)

To meet long-term objectives to transform the Idaho National Laboratory (INL), we are providing an integrated, long-term vision of infrastructure requirements that support research, development and demonstration (RD&D) goals outlined in the DOE strategic plans, including the NE Roadmap and reports such as Facilities for the Future of Nuclear Energy Research: A Twenty-year Outlook. The goal of the INL Ten-year Site Plan (TYSP) is to clearly link RD&D mission goals and INL core capabilities with infrastructure requirements (single and multi-program), establish the 10-year end-state vision for INL complexes, identify and prioritize infrastructure and capability gaps, as well as the most efficient and economic approaches to closing those gaps.

Cal Ozaki

2010-06-01T23:59:59.000Z

371

Ne{sup +} ion sputtering effect on amorphous Ga-In-Zn-O thin-film surface investigated by high-resolution XPS  

Science Conference Proceedings (OSTI)

The effect of Ne{sup +} ion sputtering on amorphous Ga-In-Zn-O (a-GIZO) thin films was investigated by using surface-sensitive, synchrotron-radiation-based, high-resolution X-ray photoelectron spectroscopy (XPS). a-GIZO thin films having different compositions (Ga{sub 2}O{sub 3}:In{sub 2}O{sub 3}:ZnO = 1:1:1, 2:2:1, 3:2:1, 4:2:1) were investigated. It was found out that the amounts of the In and Zn contents relative to that of Ga decreased noticeably after sufficient sputtering, and that there occurred a subgap state above the valence band maximum and metallic states at the In 3d and 4d core levels as well as at the Fermi edge.

Kang, Se-Jun; Lee, Mi Ji [Department of Physics, POSTECH, Pohang 790-784 (Korea, Republic of); Baik, Jae Yoon; Kim, Hyeong-Do; Thakur, Anup [Pohang Accelerator Laboratory, POSTECH, Pohang 790-784 (Korea, Republic of); Shin, Hyun-Joon [Department of Physics, POSTECH, Pohang 790-784 (Korea, Republic of); Pohang Accelerator Laboratory, POSTECH, Pohang 790-784 (Korea, Republic of); Chung, JaeGwan; Lee, Eunha; Lee, Jaecheol; Lee, JaeHak [A E Group, Samsung Advanced Institute of Technology, Yongin-si 440-712 (Korea, Republic of)

2011-12-23T23:59:59.000Z

372

Growth kinetics and micromorphology of NH{sub 4}Cl:Mn{sup 2+} crystals formed in the NH{sub 4}Cl-MnCl{sub 2}-H{sub 2}O-CONH{sub 3} system  

Science Conference Proceedings (OSTI)

The growth kinetics and elementary growth processes on the surface of NH{sub 4}Cl:Mn{sup 2+} heterogeneous crystals formed in the NH{sub 4}Cl-MnCl{sub 2}-H{sub 2}O-CONH{sub 3} system are experimentally studied. It is found that a change in the composition of complexes in an NH{sub 4}Cl crystal from Mn(NH{sub 4}){sub 2}Cl{sub 4} {center_dot} 2H{sub 2}O to MnCl{sub 2} {center_dot} 2CONH{sub 3} leads to the occurrence of a local maximum in the kinetic curve and a change in the shape of dislocation growth centers from flat to conical. The growth kinetics of {l_brace}100{r_brace} faces of heterogeneous NH{sub 4}Cl:Mn{sup 2+} crystals is described within the Bliznakov model using the Fowler-Guggenheim adsorption isotherm, which takes into account the lateral interaction of adsorbed particles.

Pyankova, L. A., E-mail: lyuba_pyan@mail.ru; Punin, Yu. O.; Bocharov, S. N.; Shtukenberg, A. G. [Petersburg State University (Russian Federation)

2012-03-15T23:59:59.000Z

373

Probing The Electrode/Electrolyte Interface in The Lithium Excess Layered Oxide Li1.2Ni0.2Mn0.6O2  

Science Conference Proceedings (OSTI)

A detailed surface investigation of the lithium-excess nickel manganese layered oxide Li1.2Ni0.2Mn0.6O2 structure was carried out using x-ray photoelectron spectroscopy (XPS), total electron yield and transmission x-ray absorption spectroscopy (XAS), and electron energy loss spectroscopy (EELS) during the first two electrochemical cycles. All spectroscopy techniques consistently showed the presence of Mn4+ in the pristine material and a surprising reduction of Mn at the voltage plateau during the first charge. The Mn reduction is accompanied by the oxygen loss revealed by EELS. Upon the first discharge, the Mn at the surface never fully returns back to Mn4+. The electrode/electrolyte interface of this compound consists of the reduced Mn at the crystalline defect-spinel inner layer and an oxidized Mn species simultaneously with the presence of a superoxide species in amorphous outer layer. This proposed model signifies that oxygen vacancy formation and lithium removal result in electrolyte decomposition and superoxide formation, leading to Mn activation/dissolution and surface layer-spinel phase transformation. The results also indicate that the role of oxygen is complex and significant in contributing to the extra capacity of this class of high energy density cathode materials.

Carroll, Kyler J [University of California, San Diego; Qian, Danna [University of California, San Diego; Fell, Chris [University of Florida, Gainesville; Calvin, Scott [Sarah Lawrence College; Veith, Gabriel M [ORNL; Chi, Miaofang [ORNL; Dudney, Nancy J [ORNL; Meng, Ying Shirley [University of California, San Diego

2013-01-01T23:59:59.000Z

374

Novel synthesis process and structure refinements of Li{sub 4}Mn{sub 5}O{sub 12} for rechargeable lithium batteries  

DOE Green Energy (OSTI)

Well crystallized Li4Mn5O12 was prepared from LiOAc-Mn(NO3)2 under flowing oxygen. Rietveld refinement with XRD and neutron powder diffraction indicated that Li4Mn5O12 has cubic spinel structure in which the Li ions occupy both the tetrahedral sites 8a and part of the octahedral sites 16d but not the 16c sites, while all the Mn ions occupy the 16d sites of the space group Fd{bar 3}m. The lattice parameter was found to be sensitive to synthesis temperature owing to variation in Mn valence. Sample prepared at 500 C showed better electrode performance: a rechargeable capacity of 135 mAh/g for the cell Li/Li4Mn5O12 at cell voltages 2.5-3.6 V. It is found that Mn oxidation state in Li4Mn5O12 has a strong effect on electrode performance of Li/Li4Mn5O12 cell.

Takada, Toshimi; Hayakawa, Hiroshi; Akiba, Etsuo [National Inst. of Materials and Chemical Research, Tsukuba, Ibaraki (Japan); Izumi, Fujio [National Inst. for Research in Inorganic Materials, Tsukuba (Japan); Chakoumakos, B.C. [Oak Ridge National Lab., TN (United States)

1996-12-31T23:59:59.000Z

375

In situ and ex situ spectroelectrochemical and X-ray absorption studies on rechargeable, chemically-modified and other MnO{sub 2} materials  

DOE Green Energy (OSTI)

A combined series of in situ and ex situ UV spectroelectrochemical and X-ray absorption studies have been made on MnO{sub 2}, chemically-modified by small amounts of Bi(III), and comparatively on other MnO{sub 2} materials such as a blank (Bi-free) and {gamma}-MnO{sub 2}. These procedures are applied in order to follow the oxidation-states of Bi and of Mn during the course of discharge and recharge of MnO{sub 2} as a battery cathode material, and the extents of rechargeability that can be achieved with such materials. Presence of Bi appears to provide a preferred ``heterogeneous`` discharge/recharge pathway involving a soluble Mn(III) intermediate, over the alternative ``electron-proton`` hopping, solid-state mechanism. From XAS results, it is concluded that presence of Bi, although not affecting the O-coordination, does influence the Mn-Mn coordination, determining the way the MnO{sub 2} coordination octahedra are connected.

Conway, B.E.; Qu, D.; McBreen, J. [Ottawa Univ., ON (Canada). Dept. of Chemistry]|[Brookhaven National Lab., Upton, NY (United States)

1992-12-31T23:59:59.000Z

376

Effect of Mn Substitution for Multiferroic BiFeO3 Probed by High-Resolution Soft-X-Ray Spectroscopy  

E-Print Network (OSTI)

sensor devices. low electrical resistivity, which affectstemperature. The low electrical resistivity of BF thin filmsFurthermore, the electrical resistivity also increases by Mn

Hattori, T.

2008-01-01T23:59:59.000Z

377

Magnetic and electrical properties of layered magnets Tl(Cr,Mn,Co)Se{sub 2}  

Science Conference Proceedings (OSTI)

Tl(Cr,Mn,Co)Se{sub 2} crystals were synthesized at T {approx} 1050 K. X-ray diffraction analysis showed that TlCrSe{sub 2}, TlMnSe{sub 2}, and TlCoSe{sub 2} compounds crystallize in the hexagonal crystal system with the lattice parameters: a = 3.6999 A, c = 22.6901 A, c/a {approx} 6.133, z = 3, {rho}{sub x} = 6.209 g/cm{sup 3}; a = 6.53 A, c = 23.96 A, c/a {approx} 3.669, z = 8, {rho}{sub x} = 6.71 g/cm{sup 3}; and a = 3.747 A, c = 22.772 A, c/a {approx} 6.077, z = 3, {rho}{sub x} = 7.577 g/cm{sup 3}, respectively. Magnetic and electrical studies in the temperature range from 80-400 K showed that TlCrSe{sub 2} is a semiconductor ferromagnet, TlMnSe{sub 2} is a semiconductor antiferromagnet, and TlCoSe{sub 2} is a ferrimagnet with a conductivity characteristic of metals. A rather large deviation in the experimental effective magnetic moment for TlCrSe{sub 2} (3.05 {mu}B) from the theoretical value (3.85 {mu}B) is attributed to two-dimensional magnetic ordering in the paramagnetic region of the noticeably layered ferromagnet TlCrSe{sub 2}. In TlCrSe{sub 2}, a correlation between magnetic and electrical properties was detected.

Veliyev, R. G.; Sadikhov, R. Z.; Kerimova, E. M., E-mail: ekerimova@physics.ab.az; Asadov, Yu. G.; Jabbarov, A. I. [National Academy of Sciences of Azerbaijan, Institute of Physics (Azerbaijan)

2009-02-15T23:59:59.000Z

378

Pressure and field tuning the magnetostructural phases of Mn3O4: Raman scattering and x-ray diffraction studies  

Science Conference Proceedings (OSTI)

We present temperature-, magnetic-field-, and pressure-dependent Raman scattering studies of single crystal Mn{sub 3}O{sub 4}, combined with temperature- and field-dependent x-ray diffraction studies, revealing the novel magnetostructural phases in Mn{sub 3}O{sub 4}. Our temperature-dependent studies showed that the commensurate magnetic transition at T{sub 2} = 33K in the binary spinel Mn{sub 3}O{sub 4} is associated with a structural transition from tetragonal to orthorhombic structures. Field-dependent studies showed that the onset and nature of this structural transition can be controlled with an applied magnetic field, and revealed evidence for a field-tuned quantum phase transition to a tetragonal spin-disordered phase for H {parallel} [1{bar 1}0]. Pressure-dependent Raman measurements showed that the magnetic easy axis direction in Mn{sub 3}O{sub 4} can be controlled - and the ferrimagnetic transition temperature increased - with applied pressure. Finally, combined pressure- and magnetic-field-tuned Raman measurements revealed a rich magnetostructural phase diagram - including a pressure- and field-induced magnetically frustrated tetragonal phase in the PH phase diagram - that can be generated in Mn{sub 3}O{sub 4} with applied pressure and magnetic field.

Kim, M.; Nelson, C.; Chen, X.M.; Wang, X.; Budakian, R.; Abbamonte, P. & Cooper, S.L.

2011-11-18T23:59:59.000Z

379

Spinel LiMn(2)O(4)/Reduced Graphene Oxide Hybrid for High Rate Lithium Ion Batteries  

DOE Green Energy (OSTI)

A well-crystallized and nano-sized spinel LiMn{sub 2}O{sub 4}/reduced graphene oxide hybrid cathode material for high rate lithium-ion batteries has been successfully synthesized via a microwave-assisted hydrothermal method at 200 C for 30 min without any post heat-treatment. The nano-sized LiMn{sub 2}O{sub 4} particles were evenly dispersed on the reduced graphene oxide template without agglomeration, which allows the inherent high active surface area of individual LiMn{sub 2}O{sub 4} nanoparticles in the hybrid. These unique structural and morphological properties of LiMn{sub 2}O{sub 4} on the highly conductive reduced graphene oxide sheets in the hybrid enable achieving the high specific capacity, an excellent high rate capability and stable cycling performance. An analysis of the cyclic voltammogram data revealed that a large surface charge storage contribution of the LiMn{sub 2}O{sub 4}/reduced graphene oxide hybrid plays an important role in achieving faster charge/discharge.

Bak, S.M.; Nam, K.; Lee, C.-W.; Kim, K.-H.; Jung, H.-C.; Yang, X-Q.; Kim, K.-B.

2011-10-04T23:59:59.000Z

380

Investigation of thermal, mechanical and magnetic behaviors of the Cu-11%Al alloy with Ag and Mn additions  

SciTech Connect

The investigation of thermal, mechanical and magnetic behaviors of the Cu-11%Al, Cu-11%Al-3%Ag, Cu-11%Al-10%Mn and Cu-11%Al-10%Mn-3%Ag alloys was made using microhardness measurements, differential scanning calorimetry, X-ray diffractometry, scanning electron microscopy, energy dispersion X-ray spectroscopy and magnetic moment change with applied field measurement. The results indicated that the Mn addition changes the phase stability range, the microhardness values and makes undetectable the eutectoid reaction in annealed Cu-11%Al and Cu-11%Al-3%Ag alloys while the presence of Ag does not modify the phase transformation sequence neither microhardness values of the annealed Cu-11%Al and Cu-11%Al-10%Mn alloys, but it increases the magnetic moment of this latter at about 2.7 times and decreases the rates of eutectoid and peritectoid reactions of the former. - Highlights: Black-Right-Pointing-Pointer The microstructure of Cu-Al alloy is modified in the Ag presence. Black-Right-Pointing-Pointer ({alpha} + {gamma}) phase is stabilized down to room temperature when Ag is added to Cu-Al alloy. Black-Right-Pointing-Pointer Ag-rich phase modifies the magnetic characteristics of Cu-Al-Mn alloy.

Silva, R.A.G., E-mail: galdino.ricardo@gmail.com [Departamento de Ciencias Exatas e da Terra-UNIFESP, Diadema-SP (Brazil)] [Departamento de Ciencias Exatas e da Terra-UNIFESP, Diadema-SP (Brazil); Paganotti, A.; Gama, S. [Departamento de Ciencias Exatas e da Terra-UNIFESP, Diadema-SP (Brazil)] [Departamento de Ciencias Exatas e da Terra-UNIFESP, Diadema-SP (Brazil); Adorno, A.T.; Carvalho, T.M.; Santos, C.M.A. [Instituto de Quimica - UNESP, Araraquara-SP (Brazil)] [Instituto de Quimica - UNESP, Araraquara-SP (Brazil)

2013-01-15T23:59:59.000Z

Note: This page contains sample records for the topic "ne sd mn" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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381

Synthesis and Electrochemical Characterization of M2Mn3O8 (M=Ca,Cu) Compounds and Derivatives  

DOE Green Energy (OSTI)

M{sub 2}Mn{sub 3}O{sub 8} (M=Ca{sup 2+}, Cu{sup 2+}) compounds were synthesized and characterized in lithium cells. The M{sup 2+} cations, which reside in the van der Waal's gaps between adjacent sheets of Mn{sub 3}O{sub 8}{sup 4-}, may be replaced chemically (by ion-exchange) or electrochemically with Li. More than 7 Li{sup +}/Cu{sub 2}Mn{sub 3}O{sub 8} may be inserted electrochemically, with concomitant reduction of Cu{sup 2+} to Cu metal, but less Li can be inserted into Ca{sub 2}Mn{sub 3}O{sub 8}. In the case of Cu{sup 2+}, this process is partially reversible when the cell is charged above 3.5 V vs. Li, but intercalation of Cu{sup +} rather than Cu{sup 2+} and Li{sup +}/Cu{sup +} exchange occurs during the subsequent discharge. If the cell potential is kept below 3.4 V, the Li in excess of 4Li{sup +}/Cu{sub 2}Mn{sub 3}O{sub 8} can be cycled reversibly. The unusual mobility of +2 cations in a layered structure has important implications both for the design of cathodes for Li batteries and for new systems that could be based on M{sup 2+} intercalation compounds.

Park, Yong Joon; Doeff, Marca M.

2005-08-25T23:59:59.000Z

382

Neutron scattering study of MnSi proving no exchange hole  

SciTech Connect

Neutron scattering experiments have been performed in MnSi below T/sub c/ with the double-axis powder scattering technique using unpolarized neutrons, and also with the polarization analysis technique. The magnetic scattering intensity has not shown any anomaly around q = 0.5 A/sup -1/, in contrast to the previous results of Ziebeck et al. who found a large intensity peak at this momentum transfer. Thus the hypothesis of Ziebeck et al. of observing an Exchange Hole is excluded.

Uemura, Y.J.; Majkrzak, C.F.; Shirane, G.; Ishikawa, Y.

1983-01-01T23:59:59.000Z

383

Tiling theory applied to the surface structure of icosahedral AlPdMn quasicrystals  

E-Print Network (OSTI)

Surfaces in i-Al68Pd23Mn9 as observed with STM and LEED experiments show atomic terraces in a Fibonacci spacing. We analyze them in a bulk tiling model due to Elser which incorporates many experimental data. The model has dodecahedral Bergman clusters within an icosahedral tiling T^*(2F) and is projected from the 6D face-centered hypercubic lattice. We derive the occurrence and Fibonacci spacing of atomic planes perpendicular to any 5fold axis, compute the variation of planar atomic densities, and determine the (auto-) correlation functions. Upon interpreting the planes as terraces at the surface we find quantitative agreement with the STM experiments.

Peter Kramer; Zorka Papadopolos; Harald Teuscher

1999-03-04T23:59:59.000Z

384

Enhancement of spin-asymmetry by L2{sub 1}-ordering in Co{sub 2}MnSi/Cr/Co{sub 2}MnSi current-perpendicular-to-plane magnetoresistance devices  

SciTech Connect

Co{sub 2}MnSi/Cr/Co{sub 2}MnSi (001)-fully epitaxial current-perpendicular-to-plane giant magnetoresistance (CPP-GMR) devices were fabricated via an UHV magnetron sputtering system. The relationship between the degree of chemical ordering in Co{sub 2}MnSi (CMS) and the CPP-GMR characteristics was investigated systematically against the annealing temperature of the devices. X-ray diffraction profiles and reflection high-energy electron diffraction images indicated that annealing improved L2{sub 1}-ordering. The MR ratio also increased upon annealing and the maximum MR ratio of 5.2% and {delta}RA of 6.5 m{omega} {mu}m{sup 2} were achieved by annealing at 400 deg. C. These results indicate that promoting the degree of L2{sub 1}-ordering in CMS enhances the bulk and/or interface spin-asymmetry coefficients.

Sakuraba, Y.; Iwase, T.; Saito, K.; Mitani, S.; Takanashi, K. [Institute for Materials Research, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577 (Japan)

2009-01-05T23:59:59.000Z

385

MN Workshop  

Science Conference Proceedings (OSTI)

Page 1. NIST Special Publication 1093 Mass Notification Messages: Workshop Proceedings Erica D. Kuligowski Richard ...

2009-03-24T23:59:59.000Z

386

Low Dose Radiation Research Program: Regulation of NF-kB and MnSOD in Low  

NLE Websites -- All DOE Office Websites (Extended Search)

NF-kB and MnSOD in Low Dose Radiation-Induced Adaptive NF-kB and MnSOD in Low Dose Radiation-Induced Adaptive Responses in Mouse and Human Skin Cells Jian Jian Li School of Health Sciences, Purdue University West Lafayette, Indiana Why this Project? To determine if low dose ionizing radiation-induced adaptive responses in skin cells are mediated by activation of signaling networks. Project Goals To evaluate the signaling networks involving transcription factor NF-kB and the mitochondrial antioxidant protein MnSOD. To determine if NF-kB is activated by low dose radiation in vivo. To determine if NF-kB activation is critical in the pathways that produce adaptive responses. Experimental Approach Cells transfected with NF-kB luciferase responder genes will be used to define a dose-response relationship for activation of the NF-kB gene. NF-kB

387

Microstructure and Magnetic Properties of PrMnO{sub 3} Bulk and Thin Film  

Science Conference Proceedings (OSTI)

Perovskite PrMnO{sub 3}(PMO) had been prepared in bulk by solid state reaction and thin films on corning glass, fused silica and MgO (100) glass substrate by pulsed laser deposition technique. SEM micrographs show that grains with size 2{approx}3 {mu}m is observed in bulk PMO while thin films PMO show strongly connected grain structure with particle size that not larger than 100 nm. X-ray diffraction analysis shows that all samples are in single phase with orthorhombic crystal structure. Bulk PMO sample had lattice strain of 0.134% which is the lowest value among others. However, larger lattice strain was observed in thin film samples due to lattice mismatch between film-substrate and caused the MnO{sub 6} to deform. All samples shown paramagnetic or antiferromagnetic behavior, enhancement in magnetization value occurred for all PMO grew as film. We believe that larger lattice strain favor the grain growth of PMO towards more order phase. In summary, formation of structure and microstructure of thin film PMO depends on type of substrate used and it affect the magnetic property.

Lim, K. P.; Halim, S. A.; Chen, S. K.; Ng, S. W.; Wong, J. K.; Gan, H. M. Albert [Department of Physics, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor (Malaysia); Woon, H. S. [College of Engineering, Universiti Tenaga Nasional, Jalan IKRAM-UNITEN, 43000 Kajang, Selangor (Malaysia)

2011-03-30T23:59:59.000Z

388

Room temperature ferromagnetism in Mn, Ni and Co ions doped Cu{sub 2}O nanorods  

SciTech Connect

Here we report the synthesis and characterization of Cu{sub 2}O nanorods doped with Mn, Ni and Co transition metal ions and the study of their magnetic properties. Synthesis of the nanorods was carried out by the modified polyol method. Powder X-ray diffraction patterns clearly showed them to be polycrystalline single phase material. They exhibited ferromagnetic behavior at room temperature, however no such behavior was observed for the reference undoped sample, which indicated that unintentionally introduced magnetic impurities were not responsible for the observed phenomenon. Ferromagnetic behavior was found to be dependent on the dopant concentration and increased consistently with its increment in the material. The total magnetic moments contribution was calculated for the dopant concentration and was found to be insignificant to account for the observed ferromagnetism, therefore it was suggested that ferromagnetism could have conjured up from the induced magnetic moment in the defects created as cation vacancies in the material. The presence of the defects was supported by the room temperature photoluminescence study which showed that intensity of the peaks was dependent on the dopant concentration and increased consistently with it. There was strong correlation between the magnitude of the photoluminescence peak and the observed ferromagnetic property in the doped samples. -- Graphical Abstract: Room temperature ferromagnetism was observed in the Cu{sub 2}O nanorods doped with Mn, Ni and Co ions. The origin seems to be the defects of cation vacancies created by the dopant ions. Display Omitted

Ahmed, Asar [Department of Chemistry, SL-214, Southern Lab, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh (India); Gajbhiye, Namdeo S., E-mail: nsg@iitk.ac.i [Department of Chemistry, SL-214, Southern Lab, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh (India)

2010-12-15T23:59:59.000Z

389

Exact Enumeration of the Phase Space of an Ising Model of Ni2MnGa  

Science Conference Proceedings (OSTI)

Exact evaluations of partition functions are generally prohibitively expensive due to exponential growth of phase space with the number of degrees of freedom. For an Ising model with sites the number of possible states is requiring the use of better scaling methods such as importance sampling Monte-Carlo calculations for all but the smallest systems. Yet the ability to obtain exact solutions for as large as possible systems can provide important benchmark results and opportunities for unobscured insight into the underlying physicsofthesystem.HerewepresentanIsingmodelforthemagneticsublatticesoftheimportantmagneto-caloricmaterialNi MnGa and use an exact enumeration algorithm to calculate the number of states for each energy and sublattice magne- tizations and . This allows the efficient calculation of the partition function and derived thermodynamic quantities such as specific heat and susceptibility. Utilizing the jaguarpf system at Oak Ridge we are able to calculate for systems of up to48sites,whichprovidesimportantinsightintothemechanismforthelargemagnet-caloriceffectinNi MnGaaswellasanimportant benchmark for Monte-Carlo (esp. Wang-Landau method).

Eisenbach, Markus [ORNL; Brown, Greg [ORNL; Rusanu, Aurelian [ORNL; Odbadrakh, Khorgolkhuu [ORNL; Nicholson, Don M [ORNL; McCarthy, Carrie V. [University of Georgia, Athens, GA

2013-01-01T23:59:59.000Z

390

Magnetic phase diagram of disordered Ni-Mn near the multicritical point  

Science Conference Proceedings (OSTI)

From detailed magnetization data taken under various field-cooling conditions, the magnetic phase diagram of temperature versus composition is determined for disordered Ni-Mn of Mn concentration (x) near 25 at. %. With increasing x, the ferromagnetic Curie-point (T/sub c/) line descends and meets the ascending line for the spin-glass reentrance temperature (T/sub f//sub g/) at a multicritical point (MCP) located at x = 23.9, T = 102 K, from which the spin-glass freezing-temperature (T/sub g/) line emerges and reaches a maximum at higher x. The reentrant spin-glass (SG) ordering is accompanied by a net ferromagnetic (FM) moment, thus describing a mixed ferro-spin-glass (FSG) state, which is separated from the normal SG state by a boundary line that extends essentially vertically down in temperature from the MCP. Moreover, it is shown that the SG ordering of the FSG state probably persists into the FM regime above T/sub f//sub g/, where T/sub f//sub g/ (like T/sub g/) remains defined operationally by the appearance of irreversible and time-dependent magnetic effects.

Abdul-Razzaq, W.; Kouvel, J.S.

1987-02-01T23:59:59.000Z

391

Defect Levels of Indium-doped CdMnTe Crystals  

Science Conference Proceedings (OSTI)

Using photoluminescence (PL) and current deep-level transient spectroscopy (I-DLTS), we investigated the electronic defects of indium-doped detector-grade CdMnTe:In (CMT:In) crystals grown by the vertical Bridgman method. We similarly analyzed CdZnTe:In (CZT:In) and undoped CdMnTe (CMT) crystals grown under the amount of same level of excess Te and/or indium doping level to detail the fundamental properties of the electronic defect structure more readily. Extended defects, existing in all the samples, were revealed by synchrotron white beam x-ray diffraction topography and scanning electron microscopy. The electronic structure of CMT is very similar to that of CZT, with shallow traps, A-centers, Cd vacancies, deep levels, and Te antisites. The 1.1-eV deep level, revealed by PL in earlier studies of CZT and CdTe, were attributed to dislocation-induced defects. In our I-DLTS measurements, the 1.1-eV traps showed different activation energies with applied bias voltage and an exponential dependence on the trap-filling time, which are typical characteristics of dislocation-induced defects. We propose a new defect-trap model for indium-doped CMT crystals.

K Kim; A Bolotinikov; G Camarda; R Gul; A Hossain; G Yang; Y Cui; R James

2011-12-31T23:59:59.000Z

392

Tb0.5Bi0.5MnO3: New material. A DFT study  

Science Conference Proceedings (OSTI)

In the present work we have determined the band structure and the densities of states (DOS) of Tb0.5Bi0.5MnO3 in cubic phase using the density functional theory (DFT). The determination of the lattice constant was ... Keywords: 61.50.-f, 62.20.-x, 71.15.Nc, 71.20.-b, 71.55.Ht, 75.20.En, Band structure, DFT, Density of states, Magnetic properties, Mechanical and structural properties, Tb1-xBixMnO3

Miguel Grizalez; M. Jairo Arbey Rodrguez; Jess Heiras; P. Prieto

2008-03-01T23:59:59.000Z

393

NGA_99fin.vp  

Gasoline and Diesel Fuel Update (EIA)

9 9 NJ WY AK AL CA AR CO CT DE FL GA HI ID KS IL IN IA IA KY LA ME MI MA MD MN MS MT MO NE ND OH NV NM NY NH NC OK OR PA RI SC SD TN TX UT VT WA WV WI AZ VA DC 0.00-1.99 2.00-2.99 3.00-3.99 4.00-4.99 5.00-5.99 6.00-6.99 7.00+ NJ WY AK AL CA AR CO CT DE FL GA HI ID KS IL IN IA IA KY LA ME MI MA MD MN MS MT MO NE ND OH NV NM NY NH NC OK OR PA RI SC SD TN TX UT VT WA WV WI AZ VA DC 0.00-1.99 2.00-2.99 3.00-3.99 4.00-4.99 5.00-5.99 6.00-6.99 7.00+ 18. Average Price of Natural Gas Delivered to U.S. Onsystem Industrial Consumers, 1999 (Dollars per Thousand Cubic Feet) Figure 19. Average Price of Natural Gas Delivered to U.S. Electric Utilities, 1999 (Dollars per Thousand Cubic Feet) Figure Sources: Federal Energy Regulatory Commission (FERC), Form FERC-423, "Monthly Report of Cost and Quality of Fuels for Electric Plants," and Energy Information Administration (EIA), Form EIA-176, "Annual Report of Natural and Supplemental

394

C:\ANNUAL\VENTCHAP.V8\NGAla1109.vp  

Gasoline and Diesel Fuel Update (EIA)

Energy Energy Information Administration / Natural Gas Annual 2000 NJ WY AK AL CA AR CO CT DE FL GA HI ID KS IL IN IA IA KY LA ME MI MA MD MN MS MT MO NE ND OH NV NM NY NH NC OK OR PA RI SC SD TN TX UT VT WA WV WI AZ VA DC Source: Energy Information Administration (EIA), Form EIA-176, "Annual Report of Natural and Supplemental Gas Supply and Disposition." NJ WY AK AL CA AR CO CT DE FL GA HI ID KS IL IN IA IA KY LA ME MI MA MD MN MS MT MO NE ND OH NV NM NY NH NC OK OR PA RI SC SD TN TX UT VT WA WV WI AZ VA DC Note: Commercial prices include natural gas delivered for use as vehicle fuel. Source: Energy Information Administration (EIA), Form EIA-176, "Annual Report of Natural and Supplemental Gas Supply and Disposition." 0.00-1.99 2.00-3.99 4.00-5.99 6.00-7.99 8.00-9.99 10.00-11.99 12.00+ 0.00-1.99 2.00-3.99 4.00-5.99 6.00-7.99 8.00-9.99 10.00-11.99 12.00+ 17. Average Price of Natural Gas Delivered to U.S. Residential

395

NGA98fin5.vp  

Gasoline and Diesel Fuel Update (EIA)

8 8 NJ WY AK AL CA AR CO CT DE FL GA HI ID KS IL IN IA IA KY LA ME MI MA MD MN MS MT MO NE ND OH NV NM NY NH NC OK OR PA RI SC SD TN TX UT VT WA WV WI AZ VA DC 0.00-1.99 2.00-2.99 3.00-3.99 4.00-4.99 5.00-5.99 6.00-6.99 7.00+ NJ WY AK AL CA AR CO CT DE FL GA HI ID KS IL IN IA IA KY LA ME MI MA MD MN MS MT MO NE ND OH NV NM NY NH NC OK OR PA RI SC SD TN TX UT VT WA WV WI AZ VA DC 0.00-1.99 2.00-2.99 3.00-3.99 4.00-4.99 5.00-5.99 6.00-6.99 7.00+ 18. Average Price of Natural Gas Delivered to U.S. Onsystem Industrial Consumers, 1998 (Dollars per Thousand Cubic Feet) Figure 19. Average Price of Natural Gas Delivered to U.S. Electric Utilities, 1998 (Dollars per Thousand Cubic Feet) Figure Sources: Federal Energy Regulatory Commission (FERC), Form FERC-423, "Monthly Report of Cost and Quality of Fuels for Electric Plants," and Energy Information Administration (EIA), Form EIA-176, "Annual Report of Natural and Supplemental

396

C:\ANNUAL\VENTCHAP.V8\NGAla1109.vp  

Gasoline and Diesel Fuel Update (EIA)

2000 2000 NJ WY AK AL CA AR CO CT DE FL GA HI ID KS IL IN IA IA KY LA ME MI MA MD MN MS MT MO NE ND OH NV NM NY NH NC OK OR PA RI SC SD TN TX UT VT WA WV WI AZ VA DC 0.00-1.99 2.00-3.99 4.00-5.99 6.00-7.99 8.00-9.99 10.00-11.99 12.00+ NJ WY AK AL CA AR CO CT DE FL GA HI ID KS IL IN IA IA KY LA ME MI MA MD MN MS MT MO NE ND OH NV NM NY NH NC OK OR PA RI SC SD TN TX UT VT WA WV WI AZ VA DC 0.00-1.99 2.00-3.99 4.00-5.99 6.00-7.99 8.00-99.99 10.00-11.99 12.00+ 19. Average Price of Natural Gas Delivered to U.S. Onsystem Industrial Consumers, 2000 (Dollars per Thousand Cubic Feet) Figure 20. Average Price of Natural Gas Delivered to U.S. Electric Utilities, 2000 (Dollars per Thousand Cubic Feet) Figure Sources: Federal Energy Regulatory Commission (FERC), Form FERC-423, "Monthly Report of Cost and Quality of Fuels for Electric Plants," and Energy Information Administration (EIA), Form EIA-176, "Annual Report of Natural

397

C:\Annual\VENTCHAP.V8\NGA02.vp  

Gasoline and Diesel Fuel Update (EIA)

2002 2002 0.00-1.99 2.00-3.99 4.00-5.99 6.00-7.99 8.00-9.99 10.00-11.99 12.00+ WA ID MT OR CA NV UT AZ NM CO WY ND SD MN WI NE IA KS MO TX IL IN OH MI OK AR TN W VA KY MD PA WI NY VT NH MA CT ME RI NJ DE DC NC SC GA AL MS LA FL HI AK Source: Energy Information Administration (EIA), Form EIA-176, "Annual Report of Natural and Supplemental Gas Supply and Disposition," and Form EIA 910, "Monthly Natural Gas Marketer Survey." 17. Average Price of Natural Gas Delivered to U.S. Commercial Consumers, 2002 (Dollars per Thousand Cubic Feet) Figure 0.00-1.99 2.00-3.99 4.00-5.99 6.00-7.99 8.00-9.99 10.00-11.99 12.00+ WA ID MT OR CA NV UT AZ NM CO WY ND SD MN WI NE IA KS MO TX IL IN OH MI OK AR TN W VA KY MD PA WI NY VT NH MA CT ME RI NJ DE DC NC SC GA AL MS LA FL HI AK 16. Average Price of Natural Gas Delivered to U.S. Residential Consumers, 2002 (Dollars per Thousand Cubic Feet) Figure Source: Energy Information Administration

398

Microsoft Word - Figure_18_19.doc  

Gasoline and Diesel Fuel Update (EIA)

9 9 0.00-2.49 2.50-4.49 4.50-6.49 6.50-8.49 8.50-10.49 10.50+ WA ID MT OR CA NV UT AZ NM CO WY ND SD MN WI NE IA KS MO TX IL IN OH MI OK AR TN WV VA KY PA WI NY VT NH MA CT ME RI NJ DE DC NC SC GA AL MS LA FL HI AK MD 0.00-2.49 2.50-4.49 4.50-6.49 6.50-8.49 8.50-10.49 10.50+ WA ID MT OR CA NV UT AZ NM CO WY ND SD MN WI NE IA KS MO TX IL IN OH MI OK AR TN WV VA KY MD PA WI NY VT NH MA CT ME RI NJ DE DC NC SC GA AL MS LA FL HI AK Figure 18. Average Price of Natural Gas Delivered to U.S. Onsystem Industrial Consumers, 2004 (Dollars per Thousand Cubic Feet) Figure 19. Average Price of Natural Gas Delivered to U.S. Electric Power Consumers, 2004 (Dollars per Thousand Cubic Feet) Source: Energy Information Administration (EIA), Form EIA-176, "Annual Report of Natural and Supplemental Gas Supply and Disposition." Note: States where the electric power price has been withheld (see Table 23) are included in the $0.00-$2.49 price category.

399

Microsoft Word - NGAMaster_State_TablesNov12.doc  

Gasoline and Diesel Fuel Update (EIA)

49 49 0.00-1.99 2.00-3.99 4.00-5.99 6.00-7.99 8.00-9.99 10.00-11.99 12.00+ WA ID MT OR CA NV UT AZ NM CO WY ND SD MN WI NE IA KS MO TX IL IN OH MI OK AR TN WV VA KY PA WI NY VT NH MA CT ME RI NJ DE DC NC SC GA AL MS LA FL HI AK MD 0.00-1.99 2.00-3.99 4.00-5.99 6.00-7.99 8.00-9.99 10.00-11.99 12.00+ WA ID MT OR CA NV UT AZ NM CO WY ND SD MN WI NE IA KS MO TX IL IN OH MI OK AR TN WV VA KY MD PA WI NY VT NH MA CT ME RI NJ DE DC NC SC GA AL MS LA FL HI AK Figure 18. Average Price of Natural Gas Delivered to U.S. Onsystem Industrial Consumers, 2003 (Dollars per Thousand Cubic Feet) Figure 19. Average Price of Natural Gas Delivered to U.S. Electric Power Consumers, 2003 (Dollars per Thousand Cubic Feet) Source: Energy Information Administration (EIA), Form EIA-176, "Annual Report of Natural and Supplemental Gas Supply and Disposition." Note: States where the electric power price has been withheld (see Table 23) are included in the $0.00-$1.99 price category.

400

C:\Annual\VENTCHAP.V8\NGA02.vp  

Gasoline and Diesel Fuel Update (EIA)

2 2 0.00-1.99 2.00-3.99 4.00-5.99 6.00-7.99 8.00-9.99 10.00-11.99 12.00+ WA ID MT OR CA NV UT AZ NM CO WY ND SD MN WI NE IA KS MO TX IL IN OH MI OK AR TN W VA KY MD PA WI NY VT NH MA CT ME RI NJ DE DC NC SC GA AL MS LA FL HI AK 18. Average Price of Natural Gas Delivered to U.S. Onsystem Industrial Consumers, 2002 (Dollars per Thousand Cubic Feet) Figure Source: Energy Information Administration (EIA), Form EIA-176, "Annual Report of Natural and Supplemental Gas Supply and Disposition." 0.00-1.99 2.00-3.99 4.00-5.99 6.00-7.99 8.00-9.99 10.00-11.99 12.00+ WA ID MT OR CA NV UT AZ NM CO WY ND SD MN WI NE IA KS MO TX IL IN OH MI OK AR TN W VA KY MD PA WI NY VT NH MA CT ME RI NJ DE DC NC SC GA AL MS LA FL HI AK 19. Average Price of Natural Gas Delivered to U.S. Electric Utilities, 2002 (Dollars per Thousand Cubic Feet) Figure Sources: Federal Energy Regulatory Commission (FERC), Form FERC-423, "Monthly Report of Cost

Note: This page contains sample records for the topic "ne sd mn" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

NGA_99fin.vp  

Gasoline and Diesel Fuel Update (EIA)

9 9 NJ WY AK AL CA AR CO CT DE FL GA HI ID KS IL IN IA IA KY LA ME MI MA MD MN MS MT MO NE ND OH NV NM NY NH NC OK OR PA RI SC SD TN TX UT VT WA WV WI AZ VA DC Source: Energy Information Administration (EIA), Form EIA-176, "Annual Report of Natural and Supplemental Gas Supply and Disposition." NJ WY AK AL CA AR CO CT DE FL GA HI ID KS IL IN IA IA KY LA ME MI MA MD MN MS MT MO NE ND OH NV NM NY NH NC OK OR PA RI SC SD TN TX UT VT WA WV WI AZ VA DC Note: Commercial prices include natural gas delivered for use as vehicle fuel. Source: Energy Information Administration (EIA), Form EIA-176, "Annual Report of Natural and Supplemental Gas Supply and Disposition." 0.00-1.99 2.00-2.99 3.00-3.99 4.00-4.99 5.00-5.99 6.00-6.99 7.00+ 0.00-1.99 2.00-2.99 3.00-3.99 4.00-4.99 5.00-5.99 6.00-6.99 7.00+ 16. Average Price of Natural Gas Delivered to U.S. Residential Consumers, 1999 (Dollars per Thousand Cubic Feet) Figure

402

C:\ANNUAL\VENTCHAP.V8\NGA.VP  

Gasoline and Diesel Fuel Update (EIA)

8 8 NJ WY AK AL CA AR CO CT DE FL GA HI ID KS IL IN IA IA KY LA ME MI MA MD MN MS MT MO NE ND OH NV NM NY NH NC OK OR PA RI SC SD TN TX UT VT WA WV WI AZ VA DC Source: Energy Information Administration (EIA), Form EIA-176, "Annual Report of Natural and Supplemental Gas Supply and Disposition." NJ WY AK AL CA AR CO CT DE FL GA HI ID KS IL IN IA IA KY LA ME MI MA MD MN MS MT MO NE ND OH NV NM NY NH NC OK OR PA RI SC SD TN TX UT VT WA WV WI AZ VA DC Note: Commercial prices include natural gas delivered for use as vehicle fuel. Source: Energy Information Administration (EIA), Form EIA-176, "Annual Report of Natural and Supplemental Gas Supply and Disposition." 0.00-1.99 2.00-2.99 3.00-3.99 4.00-4.99 5.00-5.99 6.00-6.99 7.00+ 0.00-1.99 2.00-2.99 3.00-3.99 4.00-4.99 5.00-5.99 6.00-6.99 7.00+ 16. Average Price of Natural Gas Delivered to U.S. Residential Consumers, 1997 (Dollars per Thousand Cubic Feet) Figure

403

C:\ANNUAL\VENTCHAP.V8\NewNGA02.vp  

Gasoline and Diesel Fuel Update (EIA)

2001 2001 0.00-1.99 2.00-3.99 4.00-5.99 6.00-7.99 8.00-9.99 10.00-11.99 12.00+ WA ID MT OR CA NV UT AZ NM CO WY ND SD MN WI NE IA KS MO TX IL IN OH MI OK AR TN W VA KY MD PA WI NY VT NH MA CT ME RI NJ DE DC NC SC GA AL MS LA FL HI AK Source: Energy Information Administration (EIA), Form EIA-176, "Annual Report of Natural and Supplemental Gas Supply and Disposition." 28. Average Price of Natural Gas Delivered to U.S. Onsystem Residential Consumers, 2001 (Dollars per Thousand Cubic Feet) Figure 0.00-1.99 2.00-3.99 4.00-5.99 6.00-7.99 8.00-9.99 10.00-11.99 12.00+ WA ID MT OR CA NV UT AZ NM CO WY ND SD MN WI NE IA KS MO TX IL IN OH MI OK AR TN W VA KY MD PA WI NY VT NH MA CT ME RI NJ DE DC NC SC GA AL MS LA FL HI AK Note: Commercial prices include natural gas delivered for use as vehicle fuel. Source: Energy Information Administration (EIA), Form EIA-176, "Annual Report of Natural and Supplemental Gas Supply and Disposition."

404

NGA98fin5.vp  

Gasoline and Diesel Fuel Update (EIA)

1998 1998 NJ WY AK AL CA AR CO CT DE FL GA HI ID KS IL IN IA IA KY LA ME MI MA MD MN MS MT MO NE ND OH NV NM NY NH NC OK OR PA RI SC SD TN TX UT VT WA WV WI AZ VA DC Source: Energy Information Administration (EIA), Form EIA-176, "Annual Report of Natural and Supplemental Gas Supply and Disposition." NJ WY AK AL CA AR CO CT DE FL GA HI ID KS IL IN IA IA KY LA ME MI MA MD MN MS MT MO NE ND OH NV NM NY NH NC OK OR PA RI SC SD TN TX UT VT WA WV WI AZ VA DC Note: Commercial prices include natural gas delivered for use as vehicle fuel. Source: Energy Information Administration (EIA), Form EIA-176, "Annual Report of Natural and Supplemental Gas Supply and Disposition." 0.00-1.99 2.00-2.99 3.00-3.99 4.00-4.99 5.00-5.99 6.00-6.99 7.00+ 0.00-1.99 2.00-2.99 3.00-3.99 4.00-4.99 5.00-5.99 6.00-6.99 7.00+ 16. Average Price of Natural Gas Delivered to U.S. Residential Consumers, 1998 (Dollars per Thousand Cubic Feet) Figure

405

C:\ANNUAL\VENTCHAP.V8\NewNGA02.vp  

Gasoline and Diesel Fuel Update (EIA)

2001 2001 0.00-1.99 2.00-3.99 4.00-5.99 6.00-7.99 8.00-9.99 10.00-11.99 12.00+ WA ID MT OR CA NV UT AZ NM CO WY ND SD MN WI NE IA KS MO TX IL IN OH MI OK AR TN W VA KY MD PA WI NY VT NH MA CT ME RI NJ DE DC NC SC GA AL MS LA FL HI AK Source: Energy Information Administration (EIA), Form EIA-176, "Annual Report of Natural and Supplemental Gas Supply and Disposition." 30. Average Price of Natural Gas Delivered to U.S. Onsystem Industrial Consumers, 2001 (Dollars per Thousand Cubic Feet) Figure 0.00-1.99 2.00-3.99 4.00-5.99 6.00-7.99 8.00-9.99 10.00-11.99 12.00+ WA ID MT OR CA NV UT AZ NM CO WY ND SD MN WI NE IA KS MO TX IL IN OH MI OK AR TN W VA KY MD PA WI NY VT NH MA CT ME RI NJ DE DC NC SC GA AL MS LA FL HI AK 31. Average Price of Natural Gas Delivered to U.S. Electric Utilities, 2001 (Dollars per Thousand Cubic Feet) Figure Sources: Federal Energy Regulatory Commission (FERC), Form FERC-423, "Monthly Report of

406

Identification of Mn site in Pb(Zr,Ti)O{sub 3} by synchrotron x-ray absorption near-edge structure: Theory and experiment  

SciTech Connect

Synchrotron x-ray absorption near-edge structure (XANES) experiments are performed on Mn-doped PbZr{sub 1-x}Ti{sub x}O{sub 3} samples (PZT) and compared with first-principles XANES simulations. The features of the measured Mn K-edge XANES are consistent with the first-principles XANES of Mn on the Ti/Zr site and inconsistent with Mn on other sites. The clear agreement between measured and first-principles theoretical XANES spectra reported here is by far the strongest evidence of Mn substituting for Ti/Zr in PZT. This work illustrates that a first-principles supercell framework, which is popularly used to study impurities in crystals, can be used in conjunction with XANES measurement in order to identify an impurity structure with a high degree of confidence. This approach may thus be broadly applicable to study impurities in other crystals.

Limpijumnong, Sukit; Rujirawat, Saroj; Boonchun, Adisak; Smith, M. F.; Cherdhirunkorn, B. [National Synchrotron Research Center, Nakhon Ratchasima 30000, Thailand and School of Physics, Suranaree University of Technology, Nakhon Ratchasima 30000 (Thailand); National Synchrotron Research Center, Nakhon Ratchasima 30000 (Thailand); Department of Physics, Thammasat University, Patum Thani 12121 (Thailand)

2007-03-05T23:59:59.000Z

407

Nuclear Energy -- Knowledge Base for Advanced Modeling and Simulation (NE-KAMS) Code Verification and Validation Data Standards and Requirements: Fluid Dynamics Version 1.0  

SciTech Connect

V&V and UQ are the primary means to assess the accuracy and reliability of M&S and, hence, to establish confidence in M&S. Though other industries are establishing standards and requirements for the performance of V&V and UQ, at present, the nuclear industry has not established such standards or requirements. However, the nuclear industry is beginning to recognize that such standards are needed and that the resources needed to support V&V and UQ will be very significant. In fact, no single organization has sufficient resources or expertise required to organize, conduct and maintain a comprehensive V&V and UQ program. What is needed is a systematic and standardized approach to establish and provide V&V and UQ resources at a national or even international level, with a consortium of partners from government, academia and industry. Specifically, what is needed is a structured and cost-effective knowledge base that collects, evaluates and stores verification and validation data, and shows how it can be used to perform V&V and UQ, leveraging collaboration and sharing of resources to support existing engineering and licensing procedures as well as science-based V&V and UQ processes. The Nuclear Energy Knowledge base for Advanced Modeling and Simulation (NE-KAMS) is being developed at the Idaho National Laboratory in conjunction with Bettis Laboratory, Sandia National Laboratories, Argonne National Laboratory, Utah State University and others with the objective of establishing a comprehensive and web-accessible knowledge base to provide V&V and UQ resources for M&S for nuclear reactor design, analysis and licensing. The knowledge base will serve as an important resource for technical exchange and collaboration that will enable credible and reliable computational models and simulations for application to nuclear power. NE-KAMS will serve as a valuable resource for the nuclear industry, academia, the national laboratories, the U.S. Nuclear Regulatory Commission (NRC) and the public and will help ensure the safe, economical and reliable operation of existing and future nuclear reactors.

Greg Weirs; Hyung Lee

2011-09-01T23:59:59.000Z

408

Radiation-induced instability of MnS precipitates and its possible consequences on irradiation-induced stress corrosion cracking of austenitic stainless steels  

SciTech Connect

Irradiation-assisted stress corrosion cracking (IASCC) is a significant materials issue for the light water reactor (LWR) industry and may also pose a problem for fusion power reactors that will use water as coolant. A new metallurgical process is proposed that involves the radiation-induced release into solution of minor impurity elements not usually thought to participate in IASCC. MnS-type precipitates, which contain most of the sulfur in stainless steels, are thought to be unstable under irradiation. First, Mn transmutes strongly to Fe in thermalized neutron spectra. Second, cascade-induced disordering and the inverse Kirkendall effect operating at the incoherent interfaces of MnS precipitates are thought to act as a pump to export Mn from the precipitate into the alloy matrix. Both of these processes will most likely allow sulfur, which is known to exert a deleterious influence on intergranular cracking, to re-enter the matrix. To test this hypothesis, compositions of MnS-type precipitates contained in several unirradiated and irradiated heats of Type 304, 316, and 348 stainless steels (SSs) were analyzed by Auger electron spectroscopy. Evidence is presented that shows a progressive compositional modification of MnS precipitates as exposure to neutrons increases in boiling water reactors. As the fluence increases, the Mn level in MnS decreases, whereas the Fe level increases. The S level also decreases relative to the combined level of Mn and Fe. MnS precipitates were also found to be a reservoir of other deleterious impurities such as F and O which could be also released due to radiation-induced instability of the precipitates.

Chung, H.M.; Sanecki, J.E. [Argonne National Lab., IL (United States); Garner, F.A. [Pacific Northwest National Lab., Richland, WA (United States)

1996-12-01T23:59:59.000Z

409

EXAFS and FT-IR Characterization of Mn and Li Promoted Titania-Supported Rh Catalysts for CO Hydrogenation  

DOE Green Energy (OSTI)

The effect of Li and Mn promoters on the structure and selectivity of supported Rh catalysts for CO hydrogenation reaction was examined. Infrared spectroscopy and X-ray absorption were used to investigate the adsorption of reactants and local structure of Rh. These techniques were used in combination with reactivity, H{sub 2} chemisorption, and temperature programmed studies to correlate structural characteristics with activity and selectivity during CO hydrogenation of unpromoted Rh/TiO{sub 2} and three promoted Rh catalysts: Rh-Li/TiO{sub 2}, Rh-Mn/TiO{sub 2}, and Rh-Li-Mn/TiO{sub 2}. The presence of a promoter slightly decreases the Rh clusters size; however, no evidence for an electronic effect induced by the presence of Li and Mn was found. Higher turnover frequencies were found for the promoted catalysts, which also showed the lower dispersion. The Li promoter introduces a weakened CO adsorption site that appears to enhance the selectivity to C{sub 2+} oxygenates. The selectivity to C{sub 2+} oxygenates varies inversely with the reducibility of Rh metal, that is, the lower the Rh reducibility, the higher the selectivity.

V Schwartz; A Campos; A Egbebi; J Spivey; S Overbury

2011-12-31T23:59:59.000Z

410

Observations on the oxidation of Mn-modified Ni-base Haynes 230 alloy under SOFC exposure conditions  

Science Conference Proceedings (OSTI)

The commercial Ni-base Haynes 230 alloy (Ni-Cr-Mo-W-Mn) was modified with two increased levels of Mn (1 and 2 wt per cent) and evaluated for its oxidation resistance under simulated SOFC interconnect exposure conditions. Oxidation rate, oxide morphology, oxide conductivity and thermal expansion were measured and compared with commercial Haynes 230. It was observed that additions of higher levels of Mn to the bulk alloy facilitated the formation of a bi-layered oxide scale that was comprised of an outer M3O4 (M=Mn, Cr, Ni) spinel-rich layer at the oxide gas interface over a Cr2O3-rich sub-layer at the metal oxide interface. The modified alloys showed higher oxidation rates and the formation of thicker oxide scales compared to the base alloy. The formation of a spinel-rich top layer improved the scale conductivity, especially during the early stages of the oxidation, but the higher scale growth rate resulted in an increase in the area-specific electrical resistance over time. Due to their face-centered cubic crystal structure, both commercial and modified alloys demonstrated a coefficient of thermal expansion that was higher than that of typical anode-supported and electrolyte-supported SOFCs.

Yang, Z Gary; Xia, Gordon; Stevenson, Jeffry W.; Singh, Prabhakar

2005-07-01T23:59:59.000Z

411

Magnetic properties of MnSb inclusions formed in GaSb matrix directly during molecular beam epitaxial growth  

Science Conference Proceedings (OSTI)

Despite of intensive search for the proper semiconductor base materials for spintronic devices working at room temperature no appropriate material based on ferromagnetic semiconductors has been found so far. We demonstrate that the phase segregated system with MnSb hexagonal inclusions inside the GaSb matrix, formed directly during the molecular beam epitaxial growth reveals the ferromagnetic properties at room temperature and is a good candidate for exploitation in spintronics. Furthermore, the MnSb inclusions with only one crystalline structure were identified in this GaMn:MnSb granular material. The SQUID magnetometry confirmed that this material exhibits ferromagnetic like behavior starting from helium up to room temperature. Moreover, the magnetic anisotropy was found which was present also at room temperature, and it was proved that by choosing a proper substrate it is possible to control the direction of easy axis of inclusions' magnetization moment between in-plane and out-of-plane; the latter is important in view of potential applications in spintronic devices.

Lawniczak-Jablonska, Krystyna; Wolska, Anna; Klepka, Marcin T.; Kret, Slawomir; Kurowska, Boguslawa; Kowalski, Bogdan J. [Institute of Physics PAS, al. Lotnikow 32/46, 02-668 Warsaw (Poland); Gosk, Jacek [Institute of Experimental Physics, University of Warsaw, Hoza 69, 00-681 Warsaw (Poland); Faculty of Physics, Warsaw University of Technology, Koszykowa 75, 00-662 Warsaw (Poland); Twardowski, Andrzej; Wasik, Dariusz; Kwiatkowski, Adam [Institute of Experimental Physics, University of Warsaw, Hoza 69, 00-681 Warsaw (Poland); Sadowski, Janusz [Institute of Physics PAS, al. Lotnikow 32/46, 02-668 Warsaw (Poland); MAX-Lab, Lund University, SE-221 00 Lund (Sweden)

2011-04-01T23:59:59.000Z

412

Pyrovanadolysis: a Pyrophosphorolysis-like Reaction Mediated by Pyrovanadate MN2plus and DNA Polymerase of Bacteriophage T7  

Science Conference Proceedings (OSTI)

DNA polymerases catalyze the 3'-5'-pyrophosphorolysis of a DNA primer annealed to a DNA template in the presence of pyrophosphate (PP{sub i}). In this reversal of the polymerization reaction, deoxynucleotides in DNA are converted to deoxynucleoside 5'-triphosphates. Based on the charge, size, and geometry of the oxygen connecting the two phosphorus atoms of PP{sub i}, a variety of compounds was examined for their ability to carry out a reaction similar to pyrophosphorolysis. We describe a manganese-mediated pyrophosphorolysis-like activity using pyrovanadate (VV) catalyzed by the DNA polymerase of bacteriophage T7. We designate this reaction pyrovanadolysis. X-ray absorption spectroscopy reveals a shorter Mn-V distance of the polymerase-VV complex than the Mn-P distance of the polymerase-PP{sub i} complex. This structural arrangement at the active site accounts for the enzymatic activation by Mn-VV. We propose that the Mn{sup 2+}, larger than Mg{sup 2+}, fits the polymerase active site to mediate binding of VV into the active site of the polymerase. Our results may be the first documentation that vanadium can substitute for phosphorus in biological processes.

B Akabayov; A Kulczyk; S Akabayov; C Thiele; L McLaughlin; B Beauchamp; C Richardson

2011-12-31T23:59:59.000Z

413

ASHRAE 2000 Annual Meeting, June 24-28, 2000, Minneapolis, MN, and published in ASHRAE Transactions, 106(2) 2000.  

E-Print Network (OSTI)

LBNL-44422 Mo-420 ASHRAE 2000 Annual Meeting, June 24-28, 2000, Minneapolis, MN, and published in ASHRAE Transactions, 106(2) 2000. This work was supported by the Assistant Secretary for Energy-factors of predominantly planar, vertical windows has been made by both ASHRAE and NFRC, and as increasing consensus has

414

Competition between stripe and checkerboard magnetic instabilities in Mn-doped BaFe2As2  

Science Conference Proceedings (OSTI)

The appearance of unconventional superconductivity often requires the suppression of an antiferromagnetic (AFM) ordered state by tuning the chemical composition. In BaFe2As2, the AFM ordered state is driven by Fermi surface nesting, resulting in stripe magnetic ordering with propagation vector Qstripe = (; 0) (in Fe square lattice notation). Co substitution acts as an electron donor that destabilizes the nesting condition,1 leading to suppression of the stripe AFM ordering2 and the appearance of superconductivity.3,4 Mn is nominally the hole-doping counterpart of Co which should also detune the Fermi surface nesting, but it is not a superconductor.5 Here we report that Mn doping does not act solely as a hole donor, but instead introduces strong spin uctuations at a wavevector (; ) that is unrelated to the Fermi surface topology of BaFe2As2. Spin uctuations at (; ) and (; 0) coexist, suggesting the Mn dopants act as local magnetic impurities that polarize neighbouring Fe/Mn spins, potentially disrupting superconductivity.

Pratt, Daniel [Ames Laboratory and Iowa State University; Kim, M. G. [Ames Laboratory and Iowa State University; Ran, S. [Ames Laboratory and Iowa State University; Thaler, A. [Ames Laboratory and Iowa State University; Granroth, Garrett E [ORNL; Marty, Karol J [ORNL; Tian, W. [University of Tennessee, Knoxville (UTK); Zarestky, J. L. [Ames Laboratory and Iowa State University; Lumsden, Mark D [ORNL; Budko, S L [Ames Laboratory and Iowa State University; Canfield, P. C. [Ames Laboratory; Goldman, A. I. [Ames Laboratory and Iowa State University; Mcqueeney, R J [Ames Laboratory and Iowa State University; Tucker, G. S. [Ames Laboratory and Iowa State University

2012-01-01T23:59:59.000Z

415

A confirmative spin-parity assignment for the key 6.15 MeV state in $^{18}$Ne of astrophysical importance  

E-Print Network (OSTI)

Proton resonant states in $^{18}$Ne have been investigated by the resonant elastic scattering of $^{17}$F+$p$. The $^{17}$F beam was separated by the CNS radioactive ion beam separator (CRIB), and bombarded a thick H$_2$ gas target at 3.6 MeV/nucleon. The recoiled light particles were measured by using three sets of ${\\Delta}$E-E Si telescope at scattering angles of $\\theta$$_{lab}$$\\approx 3^\\circ$, 10$^\\circ$ and 18$^\\circ$, respectively. Four resonances, {\\it i.e.}, at $E_{x}$=6.15, 6.30, 6.85, and 7.05 MeV, were observed clearly. By $R$-matrix analysis of the excitation functions, $J^{\\pi}$=1$^-$ was firmly assigned to the 6.15 MeV state which is a key state in calculating the reaction rate of $^{14}$O($\\alpha$,$p$)$^{17}$F reaction. This reaction was thought to be one of the most probable key reactions for the breakout from the hot-CNO cycle to the $rp$-process in type I x-ray bursts In addition, a new excited state observed at $E_{x}$=6.85 MeV was tentatively assigned as 0$^{-}$, which could be the analog state of 6.880 MeV, 0$^{-}$ in mirror $^{18}$O.

J. Hu; J. J. He; S. W. Xu; H. Yamaguchi; K. David; P. Ma; J. Su; H. W. Wang; T. Nakao; Y. Wakabayashi; T. Teranishi; J. Y. Moon; H. S. Jung; T. Hashimoto; A. Chen; D. Irvine; S. Kubono

2013-06-17T23:59:59.000Z

416

Structural controlled magnetic anisotropy in Heusler L1{sub 0}-MnGa epitaxial thin films  

Science Conference Proceedings (OSTI)

Ferromagnetic L1{sub 0}-MnGa thin films have been epitaxially grown on GaN, sapphire, and MgO substrates using molecular beam epitaxy. Using diffraction techniques, the epitaxial relationships are determined. It is found that the crystalline orientation of the films differ due to the influence of the substrate. By comparing the magnetic anisotropy to the structural properties, a clear correlation could be established indicating that the in-plane and out-of-plane anisotropy is directly determined by the crystal orientation of the film and could be controlled via selection of the substrates. This result could be helpful in tailoring magnetic anisotropy in thin films for spintronic applications.

Wang Kangkang; Lu Erdong; Smith, Arthur R. [Department of Physics and Astronomy, Nanoscale and Quantum Phenomena Institute, Ohio University, Athens, Ohio 45701 (United States); Knepper, Jacob W.; Yang Fengyuan [Department of Physics, Ohio State University, 191 Woodruff Ave., Columbus, Ohio 43210 (United States)

2011-04-18T23:59:59.000Z

417

Synthesis and oxygen content dependent properties of hexagonal DyMnO{sub 3 + sub delta}.  

Science Conference Proceedings (OSTI)

Oxygen deficient polycrystalline samples of hexagonal P6{sub 3}cm (space group No.185) DyMnO{sub 3+{delta}} ({delta} stoichiometric in oxygen content ({delta} = 0). Chemical expansion of the crystal lattice corresponding to these large changes of oxygen was found to be 3.48 x 10{sup -2} mol{sup -1}. Thermal expansion of stoichiometric phases were determined to be 11.6 x 10{sup -6} and 2.1 x 10{sup -6} K{sup -1} for the P6{sub 3}cm and Hex{sub 2} phases, respectively. Our measurements also indicate that the oxygen non-stoichiometry of hexagonal RMnO{sub 3+{delta}} materials may have important influence on their multiferroic properties.

Remsen, S.; Dabrowski, B.; Chmaissem, O.; Mais, J.; Szewczyk, A. (Materials Science Division); (Northern Illinois Univ.); (Polish Acad. Sci.)

2011-07-01T23:59:59.000Z

418

Microsoft Word - SD 351-1 FINAL.doc  

National Nuclear Security Administration (NNSA)

and other leaves of absence; (4) Eligibility for vesting and employer contributions to market-based retirement plans, but not for determination of benefit; andor, (5) Eligibility...

419

The COSI Tool -Carbon Offsets with SD Impacts (COSI)  

E-Print Network (OSTI)

: - indicators · Improved Electricity Service: · Volume of electricity fed to into the grid (target: MWh), · Reduced transmission losses (target: tbd) · Electrification of Local Communities: · Electrification

420

Cat. Hydro. Diesel Fuel Downstream Charge Capacity (B/SD  

U.S. Energy Information Administration (EIA)

-No Data Reported; --= Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. Notes: See Definitions ...

Note: This page contains sample records for the topic "ne sd mn" from the National Library of EnergyBeta (NLEBeta).
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421

Catalytic Hydrotreating Distillate Charge Capacity (B/SD)  

U.S. Energy Information Administration (EIA)

-No Data Reported; --= Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. Notes: See Definitions ...

422

Cat. Hydro. Diesel Fuel Downstream Charge Capacity (B/SD  

U.S. Energy Information Administration (EIA)

-No Data Reported; --= Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. Notes: Idle refineries ...

423

CEC3002012005ED5SD STAFF DRAFT GUIDEBOOK  

E-Print Network (OSTI)

thanol's Stockton Grant $1,499,063 $0.00 58.8% Did Not Pass 31 Biogas Energy Inc. Facility Anaerobic

424

CEC-400-2013-002-SD CALIFORNIA ENERGY COMMISSION  

E-Print Network (OSTI)

) ........................................................ 4153 4.11.6 MCH2E Service Hot Water & Pool Requirements (SWH

425

Synthesis and oxygen content dependent properties of hexagonal DyMnO[subscript 3+delta  

SciTech Connect

Oxygen deficient polycrystalline samples of hexagonal P6{sub 3}cm (space group No.185) DyMnO{sub 3+{delta}} ({delta} < 0) were synthesized in Ar by intentional decomposition of its perovskite phase obtained in air. The relative stability of these phases is in accord with our previous studies of the temperature and oxygen vacancy dependent tolerance factor. Thermogravimetric measurements have shown that hexagonal samples of DyMnO{sub 3+{delta}} (0 {le} {delta} {le} 0.4) exhibit unusually large excess oxygen content, which readily incorporates on heating near 300 C in various partial-pressures of oxygen atmospheres. Neutron and synchrotron diffraction data show the presence of two new structural phases at {delta} {approx} 0.25 (Hex{sub 2}) and {delta} {approx} 0.40 (Hex{sub 3}). Rietveld refinements of the Hex{sub 2} phase strongly suggest it is well modeled by the R3 space group (No.146). These phases were observed to transform back to P6{sub 3}cm above {approx} 350 C when material becomes stoichiometric in oxygen content ({delta} = 0). Chemical expansion of the crystal lattice corresponding to these large changes of oxygen was found to be 3.48 x 10{sup -2} mol{sup -1}. Thermal expansion of stoichiometric phases were determined to be 11.6 x 10{sup -6} and 2.1 x 10{sup -6} K{sup -1} for the P6{sub 3}cm and Hex{sub 2} phases, respectively. Our measurements also indicate that the oxygen non-stoichiometry of hexagonal RMnO{sub 3+{delta}} materials may have important influence on their multiferroic properties.

Remsen, S.; Dabrowski, B.; Chmaissem, O.; Mais, J.; Szewczyk, A. (NIU); (Polish)

2011-10-28T23:59:59.000Z

426

Facile synthesis of {alpha}-MnO{sub 2} one-dimensional (1D) nanostructure and energy storage ability studies  

SciTech Connect

The dense manganese oxide nanorods with an extremely narrow distribution are synthesized at a low temperature using first cathodic electrodeposition subsequently heat treatment. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images show that the nanorods have bar shapes, and their average diameter is less than 50 nm. The Fourier transform infrared (FT-IR) study, the selected area electron diffraction (SAED) pattern in TEM images and the X-ray diffraction (XRD) result show that the nanorods are {alpha}-MnO{sub 2} single crystal. The results of N{sub 2} adsorption-desorption analysis indicate that the BET surface area of the {alpha}-MnO{sub 2} nanorods is 93 m{sup 2} g{sup -1}. By recording the potential-time curve during the electrodeposition process, it is revealed that water reduction reaction has a major role in the electrogeneration of base at the cathode surface under the applied electrochemical conditions. Finally, based on the H{sub 2} bubbling on the cathode surface, the mechanism of the formation and the growth of {alpha}-MnO{sub 2} nanorods are proposed and discussed. For the electrochemical supercapacitor application, electrochemically prepared {alpha}-MnO{sub 2} is found to be stable for a large number of cycles with high specific capacitance, 338 F g{sup -1} at a scan rate of 10 mV s{sup -1}. Finally, the charge-discharge mechanism is discussed. - Graphical abstract: Highlights: Black-Right-Pointing-Pointer New nanostructures of MnO{sub 2} is synthesized by simple method of cathodicelectrodeposition. Black-Right-Pointing-Pointer The product has unique one-dimensional morphology with average diameter size of 50 nm. Black-Right-Pointing-Pointer The experiment conditions (temperature, current density) has not been reported. Black-Right-Pointing-Pointer The one-nanostructures obtained without using of hard template or surfactant.

Yousefi, Taher, E-mail: anozadg@yahoo.com [Department of Chemistry, Tarbiat Moallem University, PO Box: 31979-37551, Tehran (Iran, Islamic Republic of); Materials Research School, NSTRI, PO Box: 14395-836, Tehran (Iran, Islamic Republic of); Golikand, Ahmad Nozad, E-mail: taher_yosefy@yahoo.com [Materials Research School, NSTRI, PO Box: 14395-836, Tehran (Iran, Islamic Republic of); Hossein Mashhadizadeh, Mohammad [Department of Chemistry, Tarbiat Moallem University, PO Box: 31979-37551, Tehran (Iran, Islamic Republic of); Aghazadeh, Mustafa [Department of Optic and Spectroscopy, Lasers and Optics Research School, NSTRI, PO Box: 11365-8486, Tehran (Iran, Islamic Republic of)

2012-06-15T23:59:59.000Z

427

The role of the (111) texture on the exchange bias and interlayer coupling effects observed in sputtered NiFe/IrMn/Co trilayers  

Science Conference Proceedings (OSTI)

Magnetic properties of sputtered NiFe/IrMn/Co trilayers grown on different seed layers (Cu or Ta) deposited on Si (100) substrates were investigated by magnetometry and ferromagnetic resonance measurements. Exchange bias effect and magnetic spring behavior have been studied by changing the IrMn thickness. As shown by X-ray diffraction, Ta and Cu seed layers provoke different degrees of (111) fcc-texture that directly affect the exchange bias and indirectly modify the exchange spring coupling behavior. Increasing the IrMn thickness, it was observed that the coupling angle between the Co and NiFe ferromagnetic layers increases for the Cu seed system, but it reduces for the Ta case. The results were explained considering (i) different anisotropies of the Co and IrMn layers induced by the different degree of the (111) texture and (ii) the distinct exchange bias set at the NiFe/IrMn and IrMn/Co interfaces in both systems. The NiFe and Co interlayer coupling angle is strongly correlated with both exchange bias and exchange magnetic spring phenomena. It was also shown that the highest exchange bias field occurs when an unstressed L1{sub 2} IrMn structure is stabilized.

Castro, I. L.; Nascimento, V. P.; Passamani, E. C.; Takeuchi, A. Y.; Larica, C. [Universidade Federal do Espirito Santo, Vitoria, ES 29075-910 (Brazil)] [Universidade Federal do Espirito Santo, Vitoria, ES 29075-910 (Brazil); Tafur, M. [Universidade Federal de Itajuba, Campus Itabira, Itabira, MG 37500-903 (Brazil)] [Universidade Federal de Itajuba, Campus Itabira, Itabira, MG 37500-903 (Brazil); Pelegrini, F. [Universidade Federal de Goias, Goiania, GO 74001-970 (Brazil)] [Universidade Federal de Goias, Goiania, GO 74001-970 (Brazil)

2013-05-28T23:59:59.000Z

428

Energy for the future with Ris from nuclear power to sustainable energy Ris NatioNal laboRatoRy foR sustaiNable eNeRgy  

E-Print Network (OSTI)

Energy for the future ­ with Risø from nuclear power to sustainable energy Risø NatioNal laboRatoRy foR sustaiNable eNeRgy edited by MoRteN JastRup #12;Energy for the future #12;Energy for the future ­ with Risø from nuclear power to sustainable energy Translated from 'Energi til fremtiden ­ med Risø fra

429

Strong room-temperature ferromagnetism of high-quality lightly Mn-doped ZnO grown by molecular beam epitaxy  

Science Conference Proceedings (OSTI)

Strong room-temperature ferromagnetism is demonstrated in single crystalline Mn-doped ZnO grown by molecular beam epitaxy. With a low Mn concentration of 2 Multiplication-Sign 10{sup 19} cm{sup -3}, Mn-doped ZnO films exhibited room-temperature ferromagnetism with a coercivity field larger than 200 Oe, a large saturation moment of 6 {mu}{sub B}/ion, and a large residue moment that is {approx}70% of the saturation magnetization. Isolated ions with long range carrier mediated spin-spin coupling may be responsible for the intrinsic ferromagnetism.

Zuo Zheng; Zhou Huimei; Olmedo, Mario J.; Kong Jieying; Liu Jianlin [Quantum Structures Laboratory, Department of Electrical Engineering, University of California - Riverside, Riverside, California 92521 (United States); Beyermann, Ward P. [Department of Physics and Astronomy, University of California - Riverside, Riverside, California 92521 (United States); Zheng Jianguo [Laboratory for Electron and X-ray Instrumentation, California Institute for Telecommunications and Information Technology, University of California - Irvine, Irvine, California 92697 (United States); Xin Yan [NHMFL, Florida State University, 1800 E. Paul Dirac Dr., Tallahassee, Florida 32310-3706 (United States)

2012-09-01T23:59:59.000Z

430

Detailed Relationship Between Local Structure Polarons and Magnetization for La1-xCaxMnO3 (0.21 lt x lt 0.45)  

SciTech Connect

We present detailed local structure measurements (using the extended x-ray absorption fine structure technique) for the colossal magnetoresistive material La{sub 1-x}Ca{sub x}MnO{sub 3} (0.21 < x < 0.45) as a function of temperature and magnetic field. The local distortions of the Mn-O bonds are parameterized using {sigma}, the width of the Mn-O pair-distribution function (PDF). After subtracting thermal phonon contributions, we show that the contributions to {sigma}{sup 2} from polaron and Jahn-Teller (JT) distortions, {sigma}{sub JT/polaron}{sup 2}, are a universal function of the magnetization, independent of how the magnetization is achieved via changes in temperature or magnetic field. However this universal behavior is only observed for B fields {ge} 2 T, likely as a result of domain canting in low B fields. The resulting curve is well described by two straight lines with significantly different slopes. These regimes represent two distinctly differ distortions of the oxygen octahedra about the Mn. For low magnetizations up to {approx}65% of the theoretical maximum magnetization, M{sub T}, the slope is low and the distortion removed as the sample becomes magnetized is small - we argue this arises from polarons which have a low distortion around two (or possibly three) Mn sites. At high magnetizations large distortions per Mn site are removed as these sites become magnetized. The data are also analyzed in terms of a two Mn-O peak distribution using experimental standards for Mn-O. The results agree well with recent neutron PDF results but not with some earlier results. We discuss the limitations of assuming a two peak distribution in view of the two distortions needed to describe the Mn-O distortions as a function of T and B for B {ge} 2 T. It is likely that there is a distribution of longer bonds. Finally we show that with increasing B field, the Mn-Mn peak also has a small B-field-induced change - a measure at the unit cell level of magnetostriction but find that there is no observable B-field-induced change in the Mn-La/Ca pair distribution for fields up to {approx}10 T.

F Bridges; L Downward; J Neumeier; T Tyson

2011-12-31T23:59:59.000Z

431

LiMnPO4 Nanoplate Grown via Solid-State Reaction in Molten Hydrocarbon for Li-ion Battery Cathode  

DOE Green Energy (OSTI)

Electrochemically active LiMnPO4 nanoplates have been synthesized via novel single step solid state reaction in molten hydrocarbon. The LiMnPO4 prepared show unique porous nanoplate shape ~50nm in thickness with highly preferred crystallographic orientation. The reversible cycling of carbon coated LiMnPO4 show flat potential at 4.1 V vs. Li with specific capacity reaching up to 168mAh/g and excellent cycling performance using only galvanostatic charging / discharging mode.

Choi, Daiwon; Wang, Donghai; Bae, In-Tae; Xiao, Jie; Nie, Zimin; Wang, Wei; Viswanathan, Vilayanur V.; Lee, Yun Jung; Zhang, Jiguang; Graff, Gordon L.; Yang, Zhenguo; Liu, Jun

2010-08-11T23:59:59.000Z

432

Ferromagnetism in Ga1-xMnxP: evidence for inter-Mn exchangemediated bylocalized holes within a detached impurity band  

SciTech Connect

We report an energy gap for hole photoexcitation in ferromagnetic Ga{sub 1-x}Mn{sub x}P that is tunable by Mn concentration (x {le} 0.06) and by compensation with Te donors. For x{approx}0.06, electrical transport is dominated by excitation across this gap above the Curie temperature (T{sub c}) of 60 K and by thermally-activated hopping below T{sub c}. Magnetization measurements reveal a moment of 3.9 {+-} 0.4 {micro}{sub B} per substitutional Mn while the large anomalous Hall signal unambiguously demonstrates that the ferromagnetism is carrier-mediated. In aggregate these data indicate that ferromagnetic exchange is mediated by holes localized in a Mn-derived band that is detached from the valence band.

Scarpulla, M.A.; Cardozo, B.L.; Farshchi, R.; Hlaing Oo, W.M.; McCluskey, M.D.; Yu, K.M.; Dubon, O.D.

2005-01-11T23:59:59.000Z

433

Comparison of Small Polaron Migration and Phase Separation in Olivine LiMnPO? and LiFePO? using Hybrid Density Functional Theory  

E-Print Network (OSTI)

Using hybrid density functional theory based on the Heyd-Scuseria-Ernzerhof (HSE06) functional, we compared polaron migration and phase separation in olivine LiMnPO? to LiFePO?. The barriers for free hole and electron ...

Ong, Shyue Ping

434

Combustion Synthesis of Nanoparticulate LiMgxMn1-xPO4 (x=0, 0.1, 0.2) Carbon Composites  

E-Print Network (OSTI)

G. J. Exarhos: Glycine-nitrate Combustion Synthesis of Oxideby the Nitrate-Citrate Combustion Method. Mat. Res. Bull.Combustion Synthesis of Nanoparticulate LiMg x Mn 1-x PO 4 (

Doeff, Marca M

2010-01-01T23:59:59.000Z

435

Stability of Jahn-Teller distortion in LaMnO{sub 3} under pressure: An x-ray absorption study  

SciTech Connect

The local environment of manganese atoms in LaMnO{sub 3} under pressure up to 15.3 GPa has been studied by x-ray absorption spectroscopy. For pressures below 8 GPa, no change is detected within the MnO{sub 6} octahedra. Above this pressure a continuous reduction of the long Mn-O distance takes place, however, the octahedral distortion persists over the whole pressure range. At 15.3 GPa the average Jahn-Teller splitting of the distances is reduced by about one-third, indicating that a total removal of the local Jahn-Teller distortion would occur only for pressures around 30 GPa, where metallization is reported to take place. A hysteresis in the long distance reduction is observed down to ambient pressure, suggesting the coexistence of MnO{sub 6} distorted and undistorted units.

Ramos, Aline Y.; Tolentino, Helio C. N.; Souza-Neto, Narcizo M.; Itie, Jean-Paul; Morales, Liliana; Caneiro, Alberto [Institut Neel, UPR 2940-CNRS, 25 av. des Martyrs, Boite Postale 166, 38042 Grenoble, France and Laboratorio Nacional de Luz Sincrotron-LNLS, P.O. Box 6192, 13084-971, Campinas, Sao Paulo (Brazil); Laboratorio Nacional de Luz Sincrotron-LNLS, P.O. Box 6192, 13084-971, Campinas, Sao Paulo, Brazil and Departamento de Fisica dos Materiais e Mecanica, DFMT-IF-USP, Sao Paulo, SP (Brazil); Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, Boite Postale 48, 91192 Gif-sur-Yvette Cedex (France); Centro Atomico Bariloche and Instituto Balseiro, Comision Nacional de Energia Atomica and Universidad Nacional de Cuyo, 8400 S.C. de Bariloche (Argentina)

2007-02-01T23:59:59.000Z

436

Observation of Orbital Ordering and Jahn-Teller Distortions Supporting the Wigner-crystal Model in Highly Dopes Bi{1-x}Ca{x}MnO{3}  

SciTech Connect

We report on the experimental characterization of orbital ordering and the associated lattice distortions in highly doped Bi{sub 1-x}Ca{sub x}MnO{sub 3}. Resonant x-ray diffraction was used at the Mn L-edge for the direct observation of the ordered localized states, and at the Mn K-edge for the sensitivity to the distortions of the manganese-oxygen octahedra. The orbital ordering on Mn atoms was directly observed at x=0.69; the analysis and the numerical simulations of the K-edge spectra allow us to characterize the pattern of the distorted octahedra at x = 4/5. These observations support the Wigner-crystal-type model at both dopings; the bi-stripe model is ruled out at x = 0.69.

Grenier,S.; Kiryukhin, V.; Cheong, S.; Kim, B.; Hill, J.; Thomas, K.; Tonnerre, J.; Joly, Y.; Staub, U.; Scagnoli, V.

2007-01-01T23:59:59.000Z

437

Searching for a link between the presence of chemical spots on the surface of HgMn stars and their weak magnetic fields  

E-Print Network (OSTI)

We present the results of mapping the HgMn star AR Aur using the Doppler Imaging technique for several elements and discuss the obtained distributions in the framework of a magnetic field topology.

Savanov, I S; Gonzlez, J F; Schller, M

2009-01-01T23:59:59.000Z

438

Effective red compensation of Sr2SiO4: Dy3+ phosphor by codoping Mn2+ ions and its energy transfer  

Science Conference Proceedings (OSTI)

Mn2+ ions codoped Sr2SiO4 : Dy3+ phosphors were prepared by the solid-state reaction method using NH4Cl as the flux. Their phase compositions, photoluminescence properties, and the energy transfer ...

Le Zhang, Zhou Lu, Pengde Han, Lixi Wang, Qitu Zhang

2012-01-01T23:59:59.000Z

439

Properties of molecular beam epitaxy grown Eu{sub x}(transition metal){sub y} films (transition metals: Mn, Cr)  

Science Conference Proceedings (OSTI)

The electronic and crystallographic structures, as well as the magnetic properties, of Eu{sub x}(transition metal){sub y} (transition metals: Mn, Cr) thin films grown by molecular beam epitaxy were studied. Relative changes of the Eu/Mn and Eu/Cr ratios derived from the XPS lines, as well as x-ray reflectivity, indicate mixing of the Eu/Mn and Eu/Cr layers. Valency transitions from Eu{sup 2+} to Eu{sup 3+} were observed in both systems for most studied stoichiometries. A transition to a magnetically ordered phase was observed at 15 K, 40 K, and 62 K for selected films in the Eu-Mn system, and at 50 K for the film with a Eu/Cr ratio of 0.5.

Balin, K. [A. Chelkowski Institute of Physics, University of Silesia, Katowice, 40-007 (Poland); Center for Magnetism and Magnetic Nanostructures, University of Colorado at Colorado Springs, Colorado Springs, Colorado 80918 (United States); Nowak, A. [A. Chelkowski Institute of Physics, University of Silesia, Katowice, 40-007 (Poland); Laboratoire de Physique de l'Etat Condense, University du Maine, Le Mans Cedex, 72085 (France); Gibaud, A. [Laboratoire de Physique de l'Etat Condense, University du Maine, Le Mans Cedex, 72085 (France); Szade, J. [A. Chelkowski Institute of Physics, University of Silesia, Katowice, 40-007 (Poland); Celinski, Z. [Center for Magnetism and Magnetic Nanostructures, University of Colorado at Colorado Springs, Colorado Springs, Colorado 80918 (United States)

2011-04-01T23:59:59.000Z

440

Excitons in single and double GaAs/AlGaAs/ZnSe/Zn(Cd)MnSe heterovalent quantum wells  

Science Conference Proceedings (OSTI)

Exciton photoluminescence spectra, photoluminescence excitation spectra, and magnetophotoluminescence spectra of single (GaAs/AlGaAs/ZnMnSe) and double (GaAs/AlGaAs/ZnSe/ZnCdMnSe) heterovalent quantum wells formed by molecular beam epitaxy are studied. It is shown that the exciton absorption spectrum of such quantum wells mainly reproduces the resonant exciton spectrum expected for usual quantum wells with similar parameters, while the radiative exciton recombination have substantial distinctions, in particular the additional localization mechanism determined by defects generated by heterovalent interface exists. The nature of these localization centers is not currently clarified; their presence leads to broadening of photoluminescence lines and to an increase in the Stokes shift between the peaks of luminescence and absorption, as well as determining the variation in the magnetic g factor of bound exciton complexes.

Toropov, A. A., E-mail: toropov@beam.ioffe.ru; Kaibyshev, V. Kh.; Terent'ev, Ya. V.; Ivanov, S. V.; Kop'ev, P. S. [Russian Academy of Sciences, Ioffe Physical Technical Institute (Russian Federation)

2011-02-15T23:59:59.000Z

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441

Semiconducting Transition-Metal Oxides Based on D5 Cations: Theory for MnO and Fe2O3  

SciTech Connect

Transition-metal oxides with partially filled d shells are typically Mott or charge-transfer insulators with notoriously poor transport properties due to large effective electron/hole masses or due to carrier self-trapping. Employing band-structure calculations and ab initio small-polaron theory for MnO and Fe{sub 2}O{sub 3}, we explore the potential of d{sup 5} oxides for achieving desirable semiconducting properties, e.g., in solar energy applications. The quantification of self-trapping energies and the trends with the coordination symmetry suggest strategies to overcome the main bottlenecks, i.e., the tendency for self-trapping of holes due to Mn(II) and of electrons due to Fe(III).

Peng, H.; Lany, S.

2012-05-15T23:59:59.000Z

442

Phase Transition of ZnxMn1-xS Dilute Magnetic Semiconductor Nanoparticles under Ultra-high Pressure  

Science Conference Proceedings (OSTI)

The high-pressure behavior of different doping content of ZnS nanocrystals has been investigated using angle-dispersive synchrotron X-ray powder diffraction up to 45.1 GPa. A phase transformation from the zinc-blende(ZB) to the rock-salt (RS) structure is observed at pressures of about 17.7 and 18.3 GPa at room temperature, corresponding to the Mn{sup 2+} ion mole percent content solutions 0.85% and 1.26%, respectively. The obtained results indicate that the Mn{sup 2+} doping could obviously enhance the phase transi