Sample records for mo ne ar

  1. Multiphoton Double Ionization of Ar and Ne Close to Threshold

    SciTech Connect (OSTI)

    Liu Yunquan [Max-Planck-Institut fuer Kernphysik, D-69117 Heidelberg (Germany); Department of Physics and State Key Laboratory for Mesoscopic Physics, Peking University, Beijing 100871 (China); Ye Difa; Liu Jie [Center for Applied Physics and Technology, Peking University, 100084 Beijing (China); Institute of Applied Physics and Computational Mathematics, 100088 Beijing (China); Rudenko, A. [Max-Planck-Institut fuer Kernphysik, D-69117 Heidelberg (Germany); Max-Planck Advanced Study Group at CFEL, 22607 Hamburg (Germany); Tschuch, S.; Duerr, M.; Moshammer, R.; Ullrich, J. [Max-Planck-Institut fuer Kernphysik, D-69117 Heidelberg (Germany); Siegel, M.; Morgner, U. [Leibniz Universitaet Hannover, Welfengarten 1, D-30167 Hannover (Germany); Gong Qihuang [Department of Physics and State Key Laboratory for Mesoscopic Physics, Peking University, Beijing 100871 (China)

    2010-04-30T23:59:59.000Z

    In kinematically complete studies we explore double ionization (DI) of Ne and Ar in the threshold regime (I>3x10{sup 13} W/cm{sup 2}) for 800 nm, 45 fs pulses. The basic differences are found in the two-electron momentum distributions - 'correlation' (CO) for Ne and 'anticorrelation' (ACO) for Ar - that can be partially explained theoretically within a 3D classical model including tunneling. Transverse electron momentum spectra provide insight into 'Coulomb focusing' and point to correlated nonclassical dynamics. Finally, DI threshold intensities, CO as well as ACO regimes are predicted for both targets.

  2. Triple photoionization of Ne and Ar near threshold

    SciTech Connect (OSTI)

    Bluett, J.B.; Wehlitz, R. [Synchrotron Radiation Center, UW-Madison, Stoughton, Wisconsin 53589 (United States); Lukic, D. [Institute of Physics, 11001 Belgrade (Serbia and Montenegro)

    2004-04-01T23:59:59.000Z

    The triple-photoionization cross section of neon and argon near threshold has been investigated by ion time-of-flight spectrometry. We applied the Wannier power law to our data and confirmed the theoretical Wannier exponent in the cases of Ne and Ar. Our data also agree with previous findings regarding the Wannier exponent and its range of validity for Ne. However, the Wannier power law exhibits a much smaller range of validity of 2 eV for Ar compared to 5 eV for Ne. Also, in contrast to a previous experiment, we do not find a 'second' power law but a gradual decrease of the exponent above the range of validity of the Wannier power law.

  3. Few-Photon Multiple Ionization of Ne and Ar by Strong Free-Electron-Laser Pulses

    SciTech Connect (OSTI)

    Moshammer, R.; Jiang, Y. H.; Rudenko, A.; Ergler, Th.; Schroeter, C. D.; Luedemann, S.; Zrost, K.; Dorn, A.; Ferger, T.; Kuehnel, K. U.; Ullrich, J. [Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, 69117 Heidelberg (Germany); Foucar, L.; Titze, J.; Jahnke, T.; Schoeffler, M.; Doerner, R. [Institut fuer Kernphysik, Universitaet Frankfurt, D 60486 Frankfurt (Germany); Fischer, D. [Atomic Physics, Stockholm University, Alba Nova University Centrum, 10691 Stockholm (Sweden); Weber, T. [Institut fuer Kernphysik, Universitaet Frankfurt, D 60486 Frankfurt (Germany); DESY, Notkestrasse 85, 22607 Hamburg (Germany); Zouros, T. J. M. [Department of Physics, University of Crete, P.O. Box 2208, 71003 Heraklion, Crete (Greece); Institute of Electronic Structure and Laser, P.O. Box 1527, 71110 Heraklion, Crete (Greece); Duesterer, S. [DESY, Notkestrasse 85, 22607 Hamburg (Germany)] (and others)

    2007-05-18T23:59:59.000Z

    Few-photon multiple ionization of Ne and Ar atoms by strong vacuum ultraviolet laser pulses from the free-electron laser at Hamburg was investigated differentially with the Heidelberg reaction microscope. The light-intensity dependence of Ne{sup 2+} production reveals the dominance of nonsequential two-photon double ionization at intensities of I<6x10{sup 12} W/cm{sup 2} and significant contributions of three-photon ionization as I increases. Ne{sup 2+} recoil-ion-momentum distributions suggest that two electrons absorbing ''instantaneously'' two photons are ejected most likely into opposite hemispheres with similar energies.

  4. Quasiparticle and Optical Excitations in Solid Ne and Ar: GW and BSE Approximations

    SciTech Connect (OSTI)

    Patterson, Charles H.; Galamic-Mulaomerovic, S. [School of Physics, Trinity College Dublin, Dublin 2 (Ireland)

    2007-12-26T23:59:59.000Z

    The GW approximation and the Bethe-Salpeter equation (BSE) have been used to calculate quasiparticle and optical excitations in solid Ne and Ar. Absolute positions of quasiparticle and quasihole energies are found to be in very good agreement with experimental values. Binding energies of Frenkel excitons for these systems calculated using the BSE are also in good agreement with experiment. Splitting of excitons into longitudinal and transverse modes is calculated and found to be approximately twice the experimentally measured value.

  5. Ne

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  6. Multiphoton ionization and high-order harmonic generation of He, Ne, and Ar atoms in intense pulsed laser fields: Self-interaction-free time-dependent density-functional theoretical approach

    E-Print Network [OSTI]

    Chu, Shih-I; Tong, Xiao-Min

    2001-06-12T23:59:59.000Z

    We present a detailed study of the multiphoton ionization and high-order harmonic generation (HHG) processes of rare-gas atoms (He, Ne, and Ar) in intense pulsed laser fields by means of a self-interaction-free time-dependent density...

  7. NE Pacific St. NE Pacific St.

    E-Print Network [OSTI]

    Lake W ashington Ship Canal NE Pacific St. NE Pacific St. NE Boat St. 15th Ave NE 15thAveNE UniversityWayNE BrooklynAveNE NE Pacific St. MontlakeBlvdNE MontlakeBlvdNE Pacific Place NE University Burke-Gilman Trail METRO NW A CD D EF F GHI H J RR BB CC EE AA Rotunda Cafe Ocean Sciences Hitchcock

  8. 19Ne

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  9. 19Ne

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

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  10. 15Ne

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

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  11. 16Ne

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

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  12. Vortfarado en Esperanto. Pao 2 (15.02.2013) uvaoj ne dancas ardaon en ikago. a b c d e f g h i j k l m n o p r s t u v z1.

    E-Print Network [OSTI]

    Pentus, Mati

    ekzistas verdaj steloj (Adaptita teksto) Liven Dek Li deliris: -- Mi ne timas la morton, ar mi plu vidos

  13. BooNE: About BooNE

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  14. Mass of Ne-16

    E-Print Network [OSTI]

    Woodward, C. J.; Tribble, Robert E.; Tanner, D. M.

    1983-01-01T23:59:59.000Z

    . E. Tribble, J. D. Cossairt, D. P. May, and R. A. Kenefick, Phys. Rev. C 16, 1835 (1977). 4E. Kashy, W. Benenson, D. Mueller, R. G. H. Robert- son, and D. R. Goosman, Phys. Rev. C 11, 1959 (1975). 5For a review of the various calculations, see Ref...PHYSICAL REVIEWER C VOLUME 27, NUMBER 1 Mass of ' Ne JANUARY 1983 C. J. Woodward, * R. E. Tribble, and D. M. Tanner Cyclotron Institute, Texas A&M University, College Station, Texas 77843 (Received 23 August 1982) The mass of ' Ne has been...

  15. MicroBooNE

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  16. Role of SrMoO{sub 4} in Sr{sub 2}MgMoO{sub 6} synthesis

    SciTech Connect (OSTI)

    Vasala, S.; Yamauchi, H. [Laboratory of Inorganic Chemistry, Department of Chemistry, School of Chemical Technology, Aalto University, P.O. Box 16100, FI-00076 Aalto (Finland); Karppinen, M., E-mail: maarit.karppinen@aalto.f [Laboratory of Inorganic Chemistry, Department of Chemistry, School of Chemical Technology, Aalto University, P.O. Box 16100, FI-00076 Aalto (Finland)

    2011-05-15T23:59:59.000Z

    Here we investigate the elemental and phase compositions during the solid-state synthesis of the promising SOFC-anode material, Sr{sub 2}MgMoO{sub 6}, and demonstrate that molybdenum does not notably evaporate under the normal synthesis conditions with temperatures up to 1200 {sup o}C due to the formation of SrMoO{sub 4} as an intermediate product at low temperatures, below 600 {sup o}C. However, partial decomposition of the Sr{sub 2}MgMoO{sub 6} phase becomes evident at the higher temperatures ({approx}1500 {sup o}C). The effect of SrMoO{sub 4} on the electrical conductivity of Sr{sub 2}MgMoO{sub 6} is evaluated by preparing a series of Sr{sub 2}MgMoO{sub 6} samples with different amounts of additional SrMoO{sub 4}. Under the reducing operation conditions of an SOFC anode the insulating SrMoO{sub 4} phase is apparently reduced to the highly conductive SrMoO{sub 3} phase. Percolation takes place with 20-30 wt% of SrMoO{sub 4} in a Sr{sub 2}MgMoO{sub 6} matrix, with a notable increase in electrical conductivity after reduction. Conductivity values of 14, 60 and 160 S/cm are determined at 800 {sup o}C in 5% H{sub 2}/Ar for the Sr{sub 2}MgMoO{sub 6} samples with 30, 40 and 50 wt% of added SrMoO{sub 4}, respectively. -- Graphical abstract: SrMoO{sub 4} is formed at low temperatures during the synthesis of Sr{sub 2}MgMoO{sub 6}, which prevents the volatilization of Mo from typical precursor mixtures of this promising SOFC anode material. SrMoO{sub 4} is insulating and it is often found as an impurity in Sr{sub 2}MgMoO{sub 6} samples. It is however readily reduced to highly conducting SrMoO{sub 3}. Composites of Sr{sub 2}MgMoO{sub 6} and SrMoO{sub 3} show increased electrical conductivities compared to pure Sr{sub 2}MgMoO{sub 6} under the reductive operation conditions of an SOFC anode. Display Omitted Highlights: {yields} Sr{sub 2}MgMoO{sub 6} is a promising SOFC anode material. {yields} During the Sr{sub 2}MgMoO{sub 6} synthesis SrMoO{sub 4} is formed at low temperatures. {yields} Formation of SrMoO{sub 4} effectively prevents volatilization of Mo at high temperatures. {yields} Insulating SrMoO{sub 4} reduces to highly conductive SrMoO{sub 3} under SOFC-anode conditions. {yields} Composites of Sr{sub 2}MgMoO{sub 6} and SrMoO{sub 3} show high electrical conductivities.

  17. MO. REV. MO. MAGNETIC CLEANLINESS GUIDELINES

    E-Print Network [OSTI]

    Rathbun, Julie A.

    MO. REV. MO. ATM-865 MAGNETIC CLEANLINESS GUIDELINES PAGE 1 Of 3 DATE 4/6/70 The purpose of this ATM is to update the ALSEP Magnetic Cleanliness Guidelines as delineated in A TM-294, dated 1 June. ATM-865 MAGNETIC CLEANLINESS GUIDELINES PAGE 2 OF 3 DATE 4/6/70 A review of the ALSEP Magnetic

  18. Simple Molybdenum(IV) Olefin Complexes of the Type Mo(NR)(X)(Y)(olefin)

    E-Print Network [OSTI]

    Marinescu, Smaranda C.

    Exposure of heptane solutions of Mo(NAr)(CHCMe2Ph)(Me2Pyr)(OAr) (1a; Ar = 2,6-diisopropylphenyl), Mo(NAr)(CHCMe3)(Me2Pyr)[OCMe(CF3)2] (1b), and Mo(NAr)(CHCMe2Ph)(Me2Pyr)(OSiPh3) (1c) to one atmosphere of ethylene for 12 h ...

  19. 19Ne.PDF

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

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  20. 19Ne_78.PDF

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less isN Ground-StateNovember 1997B β--Decay EvaluatedNe β+-Decay

  1. Tests of Lorentz and CPT violation with MiniBooNE neutrino oscillation excesses

    E-Print Network [OSTI]

    Teppei Katori

    2014-04-28T23:59:59.000Z

    Violation of Lorentz invariance and CPT symmetry is a predicted phenomenon of Planck-scale physics. Various types of data are analyzed to search for Lorentz violation under the Standard-Model Extension (SME) framework, including neutrino oscillation data. MiniBooNE is a short-baseline neutrino oscillation experiment at Fermilab. The measured excesses from MiniBooNE cannot be reconciled within the neutrino Standard Model; thus it might be a signal of new physics, such as Lorentz violation. We have analyzed the sidereal time dependence of MiniBooNE data for signals of the possible breakdown of Lorentz invariance in neutrinos. In this brief review, we introduce Lorentz violation, the neutrino sector of the SME, and the analysis of short-baseline neutrino oscillation experiments. We then present the results of the search for Lorentz violation in MiniBooNE data. This review is based on the published result (ArXiv:1109.3480).

  2. Ne pas confondre Absorption Adsorption

    E-Print Network [OSTI]

    Lige, Universit de

    Ne pas confondre Absorption Adsorption et Quand des molcules sont amenes en contact avec un'attachent simplement la surface du solide on parle d'adsorption. L'adsorption est donc le collage de molcules la surface d'un solide. Quand le charbon nettoie Principes physiques de l'adsorption Cdric Gommes

  3. et 19 octob NE (Observa

    E-Print Network [OSTI]

    van Tiggelen, Bart

    recomm sur la p préfére mécanis sont les OPALIN mère/e enfants temps compor l'enviro entretie Le collo vie afin d leur impact a impliqué dès le 7e mo temps jusq utils ont é entaires, le cipants (se

  4. Corrosion report for the U-Mo fuel concept

    SciTech Connect (OSTI)

    Henager, Jr., Charles H. [Pacific Northwest National Laboratory (PNNL), Richland, WA (US); Bennett, Wendy D. [Pacific Northwest National Laboratory (PNNL), Richland, WA (US); Doherty, Ann L. [Pacific Northwest National Laboratory (PNNL), Richland, WA (US); Fuller, E. S. [Pacific Northwest National Laboratory (PNNL), Richland, WA (US); Hardy, John S. [Pacific Northwest National Laboratory (PNNL), Richland, WA (US); Omberg, Ronald P. [Pacific Northwest National Laboratory (PNNL), Richland, WA (US)

    2014-08-28T23:59:59.000Z

    The Fuel Cycle Research and Development (FCRD) program of the Office of Nuclear Energy (NE) has implemented a program to develop a Uranium-Molybdenum (U-Mo) metal fuel for Light Water Reactors (LWR)s. Uranium-Molybdenum fuel has the potential to provide superior performance based on its thermo-physical properties, which includes high thermal conductivity for less stored heat energy. With sufficient development, it may be able to provide the Light Water industry with a melt-resistant accident tolerant fuel with improved safety response. However, the corrosion of this fuel in reactor water environments needs to be further explored and optimized by additional alloying. The Pacific Northwest National Laboratory has been tasked with performing ex-reactor corrosion testing to characterize the performance of U-Mo fuel. This report documents the results of the effort to characterize and develop the U-Mo metal fuel concept for LWRs with regard to corrosion testing. The results of a simple screening test in buffered water at 30C using surface alloyed U-10Mo is documented and discussed. The screening test was used to guide the selection of several potential alloy improvements that were found and are recommended for further testing in autoclaves to simulate PWR water conditions more closely.

  5. NE

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  6. Ethanol Conversion on Cyclic (MO3)3 (M = Mo, W) Clusters. | EMSL

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Conversion on Cyclic (MO3)3 (M Mo, W) Clusters. Ethanol Conversion on Cyclic (MO3)3 (M Mo, W) Clusters. Abstract: Oxides of molybdenum and tungsten are an important class of...

  7. US NE MA Site Consumption

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro IndustriesTownDells,1Stocks Nov-14TotalThe Outlook269,023Year69,023US Virgin120Mnt(N)NE MA

  8. Overview of NE Research Programs

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: The Future of Bad CholesteroliManage Presentation3 DATE: March06-05-09 HSS/UnionNE

  9. High reflectance and low stress Mo2C/Be multilayers

    DOE Patents [OSTI]

    Bajt, Sasa (Livermore, CA); Barbee, Jr., Troy W. (Palo Alto, CA)

    2001-01-01T23:59:59.000Z

    A material for extreme ultraviolet (EUV) multilayers that will reflect at about 11.3 nm, have a high reflectance, low stress, and high thermal and radiation stability. The material consists of alternating layers of Mo.sub.2 C and Be deposited by DC magnetron sputtering on a substrate, such as silicon. In one example a Mo.sub.2 C/Be multilayer gave 65.2% reflectance at 11.25 nm measured at 5 degrees off normal incidence angle, and consisted of 70 bilayers with a deposition period of 5.78 nm, and was deposited at 0.83 mTorr argon (Ar) sputtering pressure, with the first and last layers being Be. The stress of the multilayer is tensile and only +88 MPa, compared to +330 MPa of a Mo/Be multilayers of the same thickness. The Mo.sub.2 C/Be multilayer was capped with carbon which produced an increase in reflectivity of about 7% over a similar multilayer with no carbon capping material, thus raising the reflectivity from 58.3% to over 65%. The multilayers were formed using either Mo.sub.2 C or Be as the first and last layers, and initial testing has shown the formation of beryllium carbide at the interfaces between the layers which both stabilizes and has a smoothing effect, and appear to be smoother than the interfaces in Mo/Be multilayers.

  10. MicroBooNE Detector Move

    SciTech Connect (OSTI)

    Flemming, Bonnie; Rameika, Gina

    2014-06-25T23:59:59.000Z

    On Monday, June 23, 2014 the MicroBooNE detector -- a 30-ton vessel that will be used to study ghostly particles called neutrinos -- was transported three miles across the Fermilab site and gently lowered into the laboratory's Liquid-Argon Test Facility. This video documents that move, some taken with time-lapse camerad, and shows the process of getting the MicroBooNE detector to its new home.

  11. MicroBooNE Detector Move

    ScienceCinema (OSTI)

    Flemming, Bonnie; Rameika, Gina

    2014-07-15T23:59:59.000Z

    On Monday, June 23, 2014 the MicroBooNE detector -- a 30-ton vessel that will be used to study ghostly particles called neutrinos -- was transported three miles across the Fermilab site and gently lowered into the laboratory's Liquid-Argon Test Facility. This video documents that move, some taken with time-lapse camerad, and shows the process of getting the MicroBooNE detector to its new home.

  12. Semiconductor electrodes; XLV: photoelectrochemistry of n- and p-Type MoTe/sub 2/ in aqueous solutions

    SciTech Connect (OSTI)

    Abruna, H.D.; Bard, A.J.; Hope, G.A.

    1982-10-01T23:59:59.000Z

    MoTe/sub 2/ (n- and p-type) electrodes have been characterized in terms of the energetic location of the valence and conduction bands, their voltammetric behavior, and their potential utility in photoelectrochemical cells. They show behavior that is qualitatively similar to the other layered semiconductors in terms of the sensitivity of their properties to growth conditions and surface imperfections. PEC cells based on n-MoTe/sub 2/ with I/sup -//I/sub 2/ as a redox couple were constructed. These reached monochromatic light (He/Ne laser) to electrical conversion efficiencies of over 8%.

  13. NE5534, NE5534A, SA5534. SA5534A LOW-NOISE OPERATIONAL AMPLIFIERS

    E-Print Network [OSTI]

    Ravikumar, B.

    NE5534, NE5534A, SA5534. SA5534A LOW-NOISE OPERATIONAL AMPLIFIERS SLOS070C - JULY 1979 - REVISED5534. SA5534A LOW-NOISE OPERATIONAL AMPLIFIERS SLOS070C - JULY 1979 - REVISED SEPTEMBER 2004 3POST dc and ac characteristics. Some of the features include very low noise, high output-drive capability

  14. Electrodeposition of high Mo content Ni-Mo alloys under forced convection

    SciTech Connect (OSTI)

    Podlaha, E.J.; Matlosz, M.; Landolt, D. (Ecole Polytechnique Federale de Lausanne, Lausanee (Switzerland). Dept. des materiaux)

    1993-10-01T23:59:59.000Z

    Bright, compact, adherent, metallic Ni-Mo alloys, containing over 48 wt % Mo have been electrodeposited from an aqueous solution. The Mo content, which is the highest achieved so far in induced codeposition of Ni-Mo, was determined by X-ray fluorescence spectroscopy. The absence of oxygen was verified by Auger electron spectroscopy. Electrodeposition experiments were performed on rotating cylinder electrodes and demonstrate that the Mo content of the alloy is strongly influenced by convective transport.

  15. New MiniBooNE Results

    E-Print Network [OSTI]

    Zelimir Djurcic

    2009-07-22T23:59:59.000Z

    The MiniBooNE experiment at Fermilab was designed to be a definitive test of the LSND evidence for neutrino oscillations and has recently reported first results of a search for electron-neutrino appearance in a muon-neutrino Booster beam. No significant excess of events was observed at higher energies, but a sizable excess of events was observed at lower energies. The lack of the excess at higher energies allowed MiniBooNE to rule out simple two-neutrino oscillations as an explanation of the LSND signal. However, the excess at lower energies is presently unexplained. A new data set of neutrinos from the NuMI beam line measured with the MiniBooNE detector at Fermilab has been analyzed. The measurement of NuMI neutrino interactions in MiniBooNE provide a clear proof-of-principle of the off-axis beam concept that is planned to be used by future neutrino experiments such as T2K and NOvA. Moreover, it complements the first oscillation results and will help to determine whether the lower-energy excess is due to background or to new physics. New results from the re-analysis of low energy excess from the Booster beam line and the results from measurements of neutrino interactions from NuMI beam line are discussed. MiniBooNE observes an unexplained excess of $128.8 \\pm 20.4 \\pm 38.3$ electron-like events in the energy region $200 < E_{\

  16. The Coronae of AR Lac

    E-Print Network [OSTI]

    Huenemoerder, David P.

    We observed the coronally active eclipsing binary AR Lac with the High Energy Transmission Grating on Chandra for a total of 97 ks, spaced over five orbits, at quadratures and conjunctions. Contemporaneous and simultaneous ...

  17. US WNC MO Site Consumption

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

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

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdf Jump to:ar-80m.pdf Jump to:Originalfaq.pdfFinal.pdf JumpIN.pdfMO.pdf Jump to:

  19. alvos contendo mo: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    CaMoO4 crystal scintillators. A high sensitivity experiment to search for neutrinoless double beta decay of 100-Mo by using CaMoO4 scintillators is discussed. Annenkov, A N;...

  20. MicroBooNE MicroBooNE Andrzej Szelc Yale University

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |IsLove Your HomeOverview andSinatra EngineeringMicroBooNE MicroBooNE

  1. The MicroBooNE Experiment - Collaboration

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItemResearch >Internship Program The NIF andPoints of Fasterdata IPv6theMicroBooNE

  2. MicroBooNE Proposal Addendum March

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |IsLove Your HomeOverview andSinatraMicroBooNE Proposal Addendum

  3. Prospects for Antineutrino Running at MiniBooNE

    E-Print Network [OSTI]

    M. O. Wascko

    2006-02-28T23:59:59.000Z

    MiniBooNE began running in antineutrino mode on 19 January, 2006. We describe the sensitivity of MiniBooNE to LSND-like nuebar oscillations and outline a program of antineutrino cross-section measurements necessary for the next generation of neutrino oscillation experiments. We describe three independent methods of constraining wrong-sign (neutrino) backgrounds in an antineutrino beam, and their application to the MiniBooNE antineutrino analyses.

  4. Experimental study of a Ne-H{sub 2} Penning Recombination Laser in a helical hollow cathode discharge

    SciTech Connect (OSTI)

    Pramatarov, P.M.; Stefanova, M.S.; Petrov, G.M. [Georgy Nadjakov Institute of Solid State Physics, Sofia (Bulgaria)

    1995-12-31T23:59:59.000Z

    Penning recombination lasers (PRL), as first proposed in, operate in non-equilibrium recombination plasma where the upper laser level (ULL) is populated by the recombination flux and the lower laser level (LLL) is depopulated by Penning reactions. The lack of chemical activity and degradation of the laser mixture, lasing in the visible spectral region and high output power obtained attract the attention to the Ne-H{sub 2} PRL operating on the NeI 585.3 nm line (the 2p{sub 1}-1s{sub 2} transition). Despite the most powerful PRL are pumped by electron beams of relativistic energies, it is of practical interest to realize PRL pumped in a hollow cathode discharge where beam of high energy primary electrons exists. In this study a detailed experimental investigation of a Ne-H{sub 2} PRL operating in a helical hollow cathode discharge is carried out. The obtained data are compared with the results of the theoretical model. The laser tube design is similar to that used in our previous work. The cathode is made of Mo band 10 mm wide, helically wound with a 15 mm pitch to form a cylindrical hollow. Five laser tubes with different cathode diameters (5.5-12 mm) and lengths (110-280 mm) are investigated.

  5. Very-high-order harmonic generation from Ar atoms and Ar+ ions in superintense pulsed laser

    E-Print Network [OSTI]

    Chu, Shih-I

    Very-high-order harmonic generation from Ar atoms and Ar+ ions in superintense pulsed laser fields-high-order harmonic generation HHG from Ar atoms and Ar+ ions by means of the self-interaction-free time-order harmonic generation HHG is one of the most rapidly developing topics in the field of laser-atom molecule

  6. 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 Ris from nuclear power to sustainable energy Ris NatioNal laboRatoRy foR sustaiNable eNeRgy edited by MoRteN JastRup #12;Energy for the future #12;Energy for the future with Ris from nuclear power to sustainable energy Translated from 'Energi til fremtiden med Ris fra

  7. NE Pacific Basin --Tagging Data Kate Myers, Ph.D.

    E-Print Network [OSTI]

    Ocean B: NE Pacific Basin --Tagging Data Kate Myers, Ph.D. Principal Investigator, High Seas Salmon ocean tagging research on Columbia River salmon and steelhead migrating in the NE Pacific Basin R. Basin in 1995-2004. Fisheries and Oceans Canada, Pacific Biological Station, Nanaimo, B

  8. DA NE TECHNICAL NOTE INFN -LNF, Accelerator Division

    E-Print Network [OSTI]

    Istituto Nazionale di Fisica Nucleare (INFN)

    K K DA NE TECHNICAL NOTE INFN - LNF, Accelerator Division Frascati, Sept. 2, 1991 Note: G-7 ENERGY LOSS DUE TO THE BROAD-BAND IMPEDANCE IN DA NE L. Palumbo, M. Serio 1. INTRODUCTION The Broad-Band (BB to simplify the evaluation of single-bunch instability thresholds and parasitic losses [1]. Lacking detailed

  9. DA NE TECHNICAL NOTE INFN -LNF, Accelerator Division

    E-Print Network [OSTI]

    Istituto Nazionale di Fisica Nucleare (INFN)

    K K DA NE TECHNICAL NOTE INFN - LNF, Accelerator Division Frascati, April 6, 1992 Note: G-13 RF ENERGY LOSSES AND IMPEDANCE OF THE DA NE ACCUMULATOR RING VACUUM CHAMBER S. Bartalucci, L. Palumbo, M chamber. This field acts back on the beam and it is re- sponsible for energy losses and instabilities. We

  10. MoS2 Nanoribbons Thermoelectric Generators

    E-Print Network [OSTI]

    Arab, Abbas

    2015-01-01T23:59:59.000Z

    In this work, we have designed and simulated new thermoelectric generator based on monolayer and few-layer MoS2 nanoribbons. The proposed thermoelectric generator is composed of thermocouples made of both n-type and p-type MoS2 nanoribbon legs. Density Functional Tight-Binding Non-Equilibrium Green's Function (DFTB-NEGF) method has been used to calculate the transmission spectrum of MoS2 armchair and zigzag nanoribbons. Phonon transmission spectrum are calculated based on parameterization of Stillinger-Weber potential. Thermoelectric figure of merit, ZT, is calculated using these electronic and phonon transmission spectrum. Monolayer and bilayer MoS2 armchair nanoribbons are found to have the highest ZT value for p-type and n-type legs, repectively. Moreover, we have compared the thermoelectric current of doped monolayer MoS2 armchair nanoribbons and SZi thin films. Results indicate that thermoelectric current of MoS2 monolayer nanoribbons is several orders of magnitude higher than that of Si thin films.

  11. Prompt {gamma}-ray spectroscopy of the {sup 104}Mo and {sup 108}Mo fission fragments

    SciTech Connect (OSTI)

    Guessous, A.; Schulz, N.; Bentaleb, M.; Lubkiewicz, E. [Centre de Recherches Nucleaires, Institut National de Physique Nucleaire et de Physique des Particules, Centre National de la Recherche Scientifique, Universite Louis Pasteur, 67037 Strasbourg (France)] [Centre de Recherches Nucleaires, Institut National de Physique Nucleaire et de Physique des Particules, Centre National de la Recherche Scientifique, Universite Louis Pasteur, 67037 Strasbourg (France); Durell, J.L.; Pearson, C.J.; Phillips, W.R.; Shannon, J.A.; Urban, W.; Varley, B.J. [Department of Physics, University of Manchester, M13 9PL (United Kingdom)] [Department of Physics, University of Manchester, M13 9PL (United Kingdom); Ahmad, I.; Lister, C.J.; Morss, L.R.; Nash, K.L.; Williams, C.W. [Argonne National Laboratory, Argonne, Illinois 60439 (United States)] [Argonne National Laboratory, Argonne, Illinois 60439 (United States); Khazrouni, S. [Laboratoire de Physique Nucleaire Appliquee, Faculte des Sciences, Kenitra, Maroc (France)] [Laboratoire de Physique Nucleaire Appliquee, Faculte des Sciences, Kenitra, Maroc (France)

    1996-03-01T23:59:59.000Z

    The level structures of the neutron-rich {sup 104}Mo and {sup 108}Mo nuclei have been investigated by observing prompt {gamma} rays emitted in the spontaneous fission of {sup 248}Cm with the EUROGAM spectrometer. Levels with spins up to 12{h_bar} have been observed and {gamma} branching obtained. The data can be satisfactorily described when {sup 104,108}Mo are considered as axially symmetric nuclei: in {sup 104}Mo, rotational bands based on the ground state, the one-phonon and the two-phonon {gamma}-vibrational states and a quasiparticle state have been observed, whereas in {sup 108}Mo the information is limited to the yrast band and the one phonon {gamma} band. {copyright} {ital 1996 The American Physical Society.}

  12. Tunable MoS{sub 2} bandgap in MoS{sub 2}-graphene heterostructures

    SciTech Connect (OSTI)

    Ebnonnasir, Abbas [Department of Mechanical Engineering and Materials Science Program, Colorado School of Mines, Golden, Colorado 80401 (United States); Department of Materials Science and Engineering, University of California Los Angeles, Los Angeles, California 90095 (United States); Narayanan, Badri; Ciobanu, Cristian V., E-mail: cciobanu@mines.edu, E-mail: kodambaka@ucla.edu [Department of Mechanical Engineering and Materials Science Program, Colorado School of Mines, Golden, Colorado 80401 (United States); Kodambaka, Suneel, E-mail: cciobanu@mines.edu, E-mail: kodambaka@ucla.edu [Department of Materials Science and Engineering, University of California Los Angeles, Los Angeles, California 90095 (United States)

    2014-07-21T23:59:59.000Z

    Using density functional theory calculations with van der Waals corrections, we investigated how the interlayer orientation affects the structure and electronic properties of MoS{sub 2}-graphene bilayer heterostructures. Changing the orientation of graphene with respect to MoS{sub 2} strongly influences the type and the value of the electronic bandgap in MoS{sub 2}, while not significantly altering the binding energy between the layers or the interlayer spacing. We show that the physical origin of this tunable bandgap arises from variations in the SS interplanar distance (MoS{sub 2} thickness) with the interlayer orientation, variations which are caused by electron transfer away from the MoS bonds.

  13. Elevated Temperature Tensile Tests on DU10Mo Rolled Foils

    SciTech Connect (OSTI)

    Jason Schulthess

    2014-09-01T23:59:59.000Z

    Tensile mechanical properties for uranium-10 wt.% molybdenum (U10Mo) foils are required to support modeling and qualification of new monolithic fuel plate designs. It is expected that depleted uranium-10 wt% Mo (DU10Mo) mechanical behavior is representative of the low enriched U10Mo to be used in the actual fuel plates, therefore DU-10Mo was studied to simplify material processing, handling, and testing requirements. In this report, tensile testing of DU-10Mo fuel foils prepared using four different thermomechanical processing treatments were conducted to assess the impact of foil fabrication history on resultant tensile properties.

  14. Wetting of metals and glasses on Mo

    SciTech Connect (OSTI)

    Saiz, Eduardo; Tomsia, Antoni P.; Saiz, Eduardo; Lopez-Esteban, Sonia; Benhassine, Mehdi; de Coninck, Joel; Rauch, Nicole; Ruehle, Manfred

    2008-01-08T23:59:59.000Z

    The wetting of low melting point metals and Si-Ca-Al-Ti-O glasses on molybdenum has been investigated. The selected metals (Au, Cu, Ag) form a simple eutectic with Mo. Metal spreading occurs under nonreactive conditions without interdiffusion or ridge formation. The metals exhibit low (non-zero) contact angles on Mo but this requires temperatures higher than 1100 C in reducing atmospheres in order to eliminate a layer of adsorbed impurities on the molybdenum surface. By controlling the oxygen activity in the furnace, glass spreading can take place under reactive or nonreactive conditions. We have found that in the glass/Mo system the contact angle does not decrease under reactive conditions. In all cases, adsorption from the liquid seems to accelerate the diffusivity on the free molybdenum surface.

  15. Recent results from SciBooNE and MiniBooNE experiments

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's PossibleRadiation Protection Radiation ProtectionRaisingRecent PublicationsSciTechSciBooNE and

  16. Prozodi?ne monosti v slovenskem knjinem jeziku in slovenskih nare?jih

    E-Print Network [OSTI]

    Greenberg, Marc L.

    1987-01-01T23:59:59.000Z

    Following a mathematical model devised by Pavle Ivi?, the author provides an overview of functional load of suprasegmental contrasts in the strikingly variegated dialect systems of Slovene.

  17. Ar Allman Ide-och matematik

    E-Print Network [OSTI]

    Kaijser, Sten

    Napoleon Komplexa Planet: Gauss 1825 Wienkongressen Sydamerika och Grekland fria Trigonometriska serier Victoria I Upprorens °ar 1848 Abraham Lincoln Napoleon III Abstrakt algebra: Boole, Cayley

  18. ARS Energy Water and Sustainability Program

    Broader source: Energy.gov [DOE]

    Presentation covers the ARS Energy Water and Sustainability Program given at the Spring 2010 Federal Utility Partnership Working Group (FUPWG) meeting in Rapid City, South Dakota.

  19. Oxidation, Reduction, and Condensation of Alcohols over (MO3)3 (M=Mo, W) Nanoclusters

    SciTech Connect (OSTI)

    Fang, Zongtang; Li, Zhenjun; Kelley, Matthew S.; Kay, Bruce D.; Li, Shenggang; Hennigan, Jamie M.; Rousseau, Roger J.; Dohnalek, Zdenek; Dixon, David A.

    2014-10-02T23:59:59.000Z

    The reactions of deuterated methanol, ethanol, 1-propanol, 1-butanol, 2-propanol, 2-butanol and t-butanol over cyclic (MO3)3 (M = Mo, W) clusters were studied experimentally with temperature programmed desorption (TPD) and theoretically with coupled cluster CCSD(T) theory and density functional theory. The reactions of two alcohols per M3O9 cluster are required to provide agreement with experiment for D2O release, dehydrogenation and dehydration. The reaction begins with the elimination of water by proton transfers and forms an intermediate dialkoxy species which can undergo further reaction. Dehydration proceeds by a ? hydrogen transfer to a terminal M=O. Dehydrogenation takes place via an ? hydrogen transfer to an adjacent MoVI = O atom or a WVI metal center with redox involved for M = Mo and no redox for M = W. The two channels have comparable activation energies. H/D exchange to produce alcohols can take place after olefin is released or via the dialkoxy species depending on the alcohol and the cluster. The Lewis acidity of the metal center with WVI being larger than MoVI results in the increased reactivity of W3O9 over Mo3O9 for dehydrogenation and dehydration.

  20. {alpha}-cluster states in N{ne}Z nuclei

    SciTech Connect (OSTI)

    Goldberg, V. Z.; Rogachev, G. V. [Cyclotron Institute, Texas A and M University, College Station, TX (United States); Department of Physics, Florida State University, Tallahassee, FL (United States) and National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing (United States)

    2012-10-20T23:59:59.000Z

    The importance of studies of {alpha}-Cluster structure in N{ne}Z light nuclei is discussed. Spin-parity assignments for the low-lying levels in {sup 10}C are suggested.

  1. Mo Supply Chain for Nuclear Medicine Ladimer S. Nagurney

    E-Print Network [OSTI]

    Nagurney, Anna

    The 99 Mo Supply Chain for Nuclear Medicine Ladimer S. Nagurney Department of Electrical November 13, 2012 #12;Nuclear Medicine: Meeting Patient Needs with 99 Mo Ladimer S. Nagurney The 99 Mo Supply Chain #12;Background and Motivation Study of Nuclear Medicine Supply Chains is a combination

  2. ar da regiao: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    above the transition from evaporitic to continental sediments, it implies that the Fortuna evaporites Elsevier B.V. All rights reserved. Keywords: 40 Ar39 Ar; Volcanism;...

  3. ar usando plantas: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    above the transition from evaporitic to continental sediments, it implies that the Fortuna evaporites Elsevier B.V. All rights reserved. Keywords: 40 Ar39 Ar; Volcanism;...

  4. ar em amostras: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    above the transition from evaporitic to continental sediments, it implies that the Fortuna evaporites Elsevier B.V. All rights reserved. Keywords: 40 Ar39 Ar; Volcanism;...

  5. ar exalado para: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    above the transition from evaporitic to continental sediments, it implies that the Fortuna evaporites Elsevier B.V. All rights reserved. Keywords: 40 Ar39 Ar; Volcanism;...

  6. aquecimento por ar: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    above the transition from evaporitic to continental sediments, it implies that the Fortuna evaporites Elsevier B.V. All rights reserved. Keywords: 40 Ar39 Ar; Volcanism;...

  7. ar condicionado da: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    above the transition from evaporitic to continental sediments, it implies that the Fortuna evaporites Elsevier B.V. All rights reserved. Keywords: 40 Ar39 Ar; Volcanism;...

  8. abdominalfistel syv ar: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    above the transition from evaporitic to continental sediments, it implies that the Fortuna evaporites Elsevier B.V. All rights reserved. Keywords: 40 Ar39 Ar; Volcanism;...

  9. ar na entrada: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    above the transition from evaporitic to continental sediments, it implies that the Fortuna evaporites Elsevier B.V. All rights reserved. Keywords: 40 Ar39 Ar; Volcanism;...

  10. ar isotopic chain: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    above the transition from evaporitic to continental sediments, it implies that the Fortuna evaporites Elsevier B.V. All rights reserved. Keywords: 40 Ar39 Ar; Volcanism;...

  11. ar expirado na: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    above the transition from evaporitic to continental sediments, it implies that the Fortuna evaporites Elsevier B.V. All rights reserved. Keywords: 40 Ar39 Ar; Volcanism;...

  12. ar dzirdes traucjumiem: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    above the transition from evaporitic to continental sediments, it implies that the Fortuna evaporites Elsevier B.V. All rights reserved. Keywords: 40 Ar39 Ar; Volcanism;...

  13. ar por chumbo: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    above the transition from evaporitic to continental sediments, it implies that the Fortuna evaporites Elsevier B.V. All rights reserved. Keywords: 40 Ar39 Ar; Volcanism;...

  14. ar acu vjum: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    above the transition from evaporitic to continental sediments, it implies that the Fortuna evaporites Elsevier B.V. All rights reserved. Keywords: 40 Ar39 Ar; Volcanism;...

  15. ar audiodisku pamatskolas: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    above the transition from evaporitic to continental sediments, it implies that the Fortuna evaporites Elsevier B.V. All rights reserved. Keywords: 40 Ar39 Ar; Volcanism;...

  16. ar selnu bagtintu: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    above the transition from evaporitic to continental sediments, it implies that the Fortuna evaporites Elsevier B.V. All rights reserved. Keywords: 40 Ar39 Ar; Volcanism;...

  17. ar augstu kariesa: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    above the transition from evaporitic to continental sediments, it implies that the Fortuna evaporites Elsevier B.V. All rights reserved. Keywords: 40 Ar39 Ar; Volcanism;...

  18. ar avaliacao da: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    above the transition from evaporitic to continental sediments, it implies that the Fortuna evaporites Elsevier B.V. All rights reserved. Keywords: 40 Ar39 Ar; Volcanism;...

  19. ar em tomografia: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    above the transition from evaporitic to continental sediments, it implies that the Fortuna evaporites Elsevier B.V. All rights reserved. Keywords: 40 Ar39 Ar; Volcanism;...

  20. ar como indicadores: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    above the transition from evaporitic to continental sediments, it implies that the Fortuna evaporites Elsevier B.V. All rights reserved. Keywords: 40 Ar39 Ar; Volcanism;...

  1. ar efter kolecystektomi: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    above the transition from evaporitic to continental sediments, it implies that the Fortuna evaporites Elsevier B.V. All rights reserved. Keywords: 40 Ar39 Ar; Volcanism;...

  2. apsilde ar dmgzm: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    above the transition from evaporitic to continental sediments, it implies that the Fortuna evaporites Elsevier B.V. All rights reserved. Keywords: 40 Ar39 Ar; Volcanism;...

  3. ar para radiodiagnostico: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    above the transition from evaporitic to continental sediments, it implies that the Fortuna evaporites Elsevier B.V. All rights reserved. Keywords: 40 Ar39 Ar; Volcanism;...

  4. ar comprimido estudo: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    above the transition from evaporitic to continental sediments, it implies that the Fortuna evaporites Elsevier B.V. All rights reserved. Keywords: 40 Ar39 Ar; Volcanism;...

  5. ar gazu hromotografijas: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    above the transition from evaporitic to continental sediments, it implies that the Fortuna evaporites Elsevier B.V. All rights reserved. Keywords: 40 Ar39 Ar; Volcanism;...

  6. ar dadm elektronu: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    above the transition from evaporitic to continental sediments, it implies that the Fortuna evaporites Elsevier B.V. All rights reserved. Keywords: 40 Ar39 Ar; Volcanism;...

  7. adaptive response ar: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AR Representation AR Results Conclusion References Automated Reasoning in Modal Logics: A Framework with Applications Branden Fitelson Department of Philosophy Institute for...

  8. Development of CaMoO4 crystal scintillators for double beta decay experiment with 100-Mo

    E-Print Network [OSTI]

    A. N. Annenkov; O. A. Buzanov; F. A. Danevich; A. Sh. Georgadze; S. K. Kim; H. J. Kim; Y. D. Kim; V. V. Kobychev; V. N. Kornoukhov; M. Korzhik; J. I. Lee; O. Missevitch; V. M. Mokina; S. S. Nagorny; A. S. Nikolaiko; D. V. Poda; R. B. Podviyanuk; D. J. Sedlak; O. G. Shkulkova; J. H. So; I. M. Solsky; V. I. Tretyak; S. S. Yurchenko

    2007-07-10T23:59:59.000Z

    Energy resolution, alpha/beta ratio, pulse-shape discrimination for gamma rays and alpha particles, temperature dependence of scintillation properties, and radioactive contamination were studied with CaMoO4 crystal scintillators. A high sensitivity experiment to search for neutrinoless double beta decay of 100-Mo by using CaMoO4 scintillators is discussed.

  9. Re Effects on Phase Stability and Mechanical Properties of MoSS+Mo3Si+Mo5SiB2 alloys

    SciTech Connect (OSTI)

    Yang, Ying [ORNL; Bei, Hongbin [ORNL; George, Easo P [ORNL; Tiley, Jaimie [Air Force Research Laboratory, Wright-Patterson AFB, OH

    2013-01-01T23:59:59.000Z

    Because of their high melting points and good oxidation resistance Mo-Si-B alloys are of interest as potential ultrahigh-temperature structural materials. But their major drawbacks are poor ductility and fracture toughness at room temperature. Since alloying with Re has been suggested as a possible solution, we investigate here the effects of Re additions on the microstructure and mechanical properties of a ternary alloy with the composition Mo-12.5Si-8.5B (at.%). This alloy has a three-phase microstructure consisting of Mo solid-solution (MoSS), Mo3Si, and Mo5SiB2 and our results show that up to 8.4 at.% Re can be added to it without changing its microstructure or forming any brittle phase at 1600 C. Three-point bend tests using chevron-notched specimens showed that Re did not improve fracture toughness of the three-phase alloy. Nanoindentation performed on the MoSS phase in the three-phase alloy showed that Re increases Young s modulus, but does not lower hardness as in some Mo solid solution alloys. Based on our thermodynamic calculations and microstructural analyses, the lack of a Re softening effect is attributed to the increased Si levels in the Re-containing MoSS phase since Si is known to increase its hardness. This lack of softening is possibly why there is no Re-induced improvement in fracture toughness.

  10. Oscillations results from the MiniBooNE experiment Alexis Aguilar-Arévalo (ICN-UNAM),

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible for RenewableSpeedingBiomass and Biofuels Biomass and OrganizationalOriginal 

  11. Transparent Conducting ZnO Thin Films Doped with Al and Mo

    SciTech Connect (OSTI)

    Duenow, J.; Gessert, T.; Wood, D.; Young, D.; Coutts, T.

    2007-01-01T23:59:59.000Z

    Transparent conducting oxide (TCO) thin films are a vital part of photovoltaic cells, flat-panel displays, and electrochromic windows. ZnO-based TCOs, due to the relative abundance of Zn, may reduce production costs compared to those of the prevalent TCO In2O3:Sn (ITO). Undoped ZnO, ZnO:Al (0.5, 1, and 2 wt.% Al2O3), and ZnO:Mo (2 wt.%) films were deposited by RF magnetron sputtering. Controlled incorporation of H2 in the Ar sputtering ambient increased mobility of undoped ZnO by a factor of ~20 to 48 cm2V-1s-1. H2 also appears to catalyze ionization of dopants. This enabled lightly doped ZnO:Al to provide comparable conductivity to the standard 2 wt.%-doped ZnO:Al while demonstrating reduced infrared absorption. Mo was found to be an n-type dopant of ZnO, though material properties did not match those of ZnO:Al. Scattering mechanisms were investigated using temperature-dependent Hall measurements and the method of four coefficients. This abstract is subject to government rights.

  12. SSRS Summary for SSRS NE Steering Group 8 September 2011

    E-Print Network [OSTI]

    SSRS Summary for SSRS NE Steering Group 8 September 2011 1. Project Officer Hollie Walker left us modelling expert) to discuss the project monitoring and data analysis protocols that will be used to demonstrate the benefits of grey squirrel control under the Project. As a result of the discussions we revised

  13. High-frequency surface wave pumped He-Ne laser

    SciTech Connect (OSTI)

    Moutoulas, C.; Moisan, M.; Bertrand, L.; Hubert, J.; Lachambre, J.L.; Ricard, A.

    1985-02-15T23:59:59.000Z

    A new electrodeless He-Ne laser using a plasma produced by an electromagnetic surface wave as the active medium is described. Gain measurements are reported as a function of the pump wave frequency from 200 to 915 MHz. The dependence of laser performance on the gas mixture and pressure is also presented.

  14. EMPLOYMENT SUMMARY FOR 2012 GRADUATES Lincoln, NE 68583

    E-Print Network [OSTI]

    Nebraska-Lincoln, University of

    EMPLOYMENT SUMMARY FOR 2012 GRADUATES Lincoln, NE 68583 Website : http://law.unl.edu/ Phone : 402 Full Time 1 / 1 % Unemployed - Not Seeking 0 / 0 % Employment Status Unknown 1 / 1 % Unemployed - Seeking 10 / 8 % Total graduates 128 Employed - Bar Passage Required 84 1 3 0 88 / 69 % Employed

  15. Motor Vehicle Administration 6601 Ritchie Highway, N.E.

    E-Print Network [OSTI]

    Miami, University of

    Motor Vehicle Administration 6601 Ritchie Highway, N.E. Glen Burnie, Maryland 21062 For more-Owner's Signature Vehicle Information Year Make Sticker No. Title No. Tag No. Vehicle Identification Number Car Multi-purpose vehicle Truck 1 ton or less Motorcycle Fees: Non Logo Organizational Tags: $15

  16. DA NE TECHNICAL NOTE INFN -LNF, Accelerator Division

    E-Print Network [OSTI]

    Istituto Nazionale di Fisica Nucleare (INFN)

    K K DA NE TECHNICAL NOTE INFN - LNF, Accelerator Division Frascati, Sept. 2, 1991 Note: G-8 RF AND RESISTIVE ENERGY LOSS IN THE INTERACTION REGION VACUUM CHAMBER S. Bartalucci, L. Palumbo, M. Serio, B-section variation leads to sub- stantial energy losses localized in the IR vacuum chamber even if the steps in cross

  17. Plasma Diagnostics Through Analysis of Ne I Line Shape Characteristics

    SciTech Connect (OSTI)

    Milosavljevic, Vladimir [Faculty of Physics, University of Belgrade, P.O.B. 368, Belgrade (Serbia and Montenegro); School of Physics Sciences, Dublin City University, Glasnevin, Dublin 9 (Ireland)

    2004-12-01T23:59:59.000Z

    On the basis of the experimentally determined 26 prominent neutral neon (Ne I) line shapes (in the 3s-3p, 3s-3p', 3s'-3p', 3s'-3p and 3p-3d transitions) the basic plasma parameters i.e. electron temperature (T) and electron density (N) have been obtained using the line deconvolution procedure, in a plasma created in a linear, low-pressure, pulsed arc operated in pure neon. The mentioned plasma parameters have also been measured using independent experimental diagnostics techniques. Agreement has been found among the two sets of the obtained parameters. This recommends the deconvolution procedure for plasma diagnostical purposes. Self-confidence of the method has checked using Ne I spectral lines which originate from different energy levels. The advance used of the method has been done in the way to find energy level from which it does not existing any more assumption of LTE.This method may be of interest also in astrophysics where direct measurements of the main plasma parameters (T and N) are not possible. With the development of space born spectroscopy the good quality spectra will be enabling to use this method. The separate electron (We) and ion (Wi) contributions to the total Stark width (Wt), which have not been measured so far, have also been obtained for neon spectral lines. The measured and calculated We data are compared to available theoretical We values. It has found stronger influence of the ion contribution to the Ne I lines shape than the predicted ones calculated by the current theory. It has also tested the ion contribution to the Ne II lines shape. Small influence of the ion contribution to the some Ne II line shape has evidenced.

  18. Upcoming Management and Operating (M&O) Contract Competition...

    National Nuclear Security Administration (NNSA)

    Upcoming Management and Operating (M&O) Contract Competition | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission Managing the Stockpile...

  19. MoRu/Be multilayers for extreme ultraviolet applications

    DOE Patents [OSTI]

    Bajt, Sasa C. (Livermore, CA); Wall, Mark A. (Stockton, CA)

    2001-01-01T23:59:59.000Z

    High reflectance, low intrinsic roughness and low stress multilayer systems for extreme ultraviolet (EUV) lithography comprise amorphous layers MoRu and crystalline Be layers. Reflectance greater than 70% has been demonstrated for MoRu/Be multilayers with 50 bilayer pairs. Optical throughput of MoRu/Be multilayers can be 30-40% higher than that of Mo/Be multilayer coatings. The throughput can be improved using a diffusion barrier to make sharper interfaces. A capping layer on the top surface of the multilayer improves the long-term reflectance and EUV radiation stability of the multilayer by forming a very thin native oxide that is water resistant.

  20. Interdiffusion between Zr Diffusion Barrier and U-Mo Alloy

    SciTech Connect (OSTI)

    K. Huang; Y. Park; Y. H. Sohn

    2012-12-01T23:59:59.000Z

    U-Mo alloys are being developed as low enrichment uranium fuels under the Reduced Enrichment for Research and Test Reactor (RERTR) program. Significant reactions have been observed between U-Mo fuels and Al or Al alloy matrix. Refractory metal Zr has been proposed as barrier material to reduce the interactions. In order to investigate the compatibility and barrier effects between U-Mo alloy and Zr, solid-to-solid U-10wt.%Mo vs. Zr diffusion couples were assembled and annealed at 600, 700, 800, 900 and 1000 C for various times. The microstructures and concentration profiles due to interdiffusion and reactions were examined via scanning electron microscopy and electron probe microanalysis, respectively. Intermetallic phase Mo2Zr was found at the interface and its population increased when annealing temperature decreased. Diffusion paths were also plotted on the U-Mo-Zr ternary phase diagrams with good consistency. The growth rate of interdiffusion zone between U-10wt.%Mo and Zr was also calculated under the assumption of parabolic diffusion, and was determined to be about 103 times lower than the growth rate of diffusional interaction layer found in diffusion couples U-10wt.%Mo vs. Al or Al-Si alloy. Other desirable physical properties of Zr as barrier material, such as neutron adsorption rate, melting point and thermal conductivity are presented as supplementary information to demonstrate the great potential of Zr as the diffusion barrier for U-Mo fuel systems in RERTR.

  1. Mo Year Report Period: EIA ID NUMBER:

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro IndustriesTownDells, Wisconsin:DeploymentSite Name:24,High824 2.839 2.8352.747 2.759 2.699Mo

  2. Catalytic Properties of Supported MoO3 Catalysts for Oxidative Dehydrogenation of Propane

    E-Print Network [OSTI]

    Iglesia, Enrique

    Catalytic Properties of Supported MoO3 Catalysts for Oxidative Dehydrogenation of Propane Kaidong The effects of MoOx structure on propane oxidative dehydrogenation (ODH) rates and selectivity were examined with those obtained on MoOx/ZrO2. On MoOx/Al2O3 catalysts, propane turnover rate increased with increasing Mo

  3. CDC-INV4104 Optimal Control of A ne Connection Control Systems: A

    E-Print Network [OSTI]

    Murray, Richard M.

    CDC-INV4104 Optimal Control of A ne Connection Control Systems: A Variational Approach J. Alexander we investigate the optimal control of a ne connection control systems. The formalism of the a ne-dimensional second-order system as a 2n-dimensional rst-order system and applying the machinery of optimal control

  4. Production rate of cosmogenic 21 Ne in quartz estimated from 10

    E-Print Network [OSTI]

    Shuster, David L.

    Production rate of cosmogenic 21 Ne in quartz estimated from 10 Be, 26 Al, and 21 Ne concentrations Antarctica production rate calibration We estimated the production rate of 21 Ne in quartz using a set production rate. As the erosion rate can be determined from 10 Be and 26 Al concentrations, this allows

  5. Plate interaction in the NE Caribbean subduction zone from continuous GPS observations

    E-Print Network [OSTI]

    ten Brink, Uri S.

    Plate interaction in the NE Caribbean subduction zone from continuous GPS observations Uri S. ten sites on NE Caribbean islands to evaluate strain accumulation along the North American (NA) ­ Caribbean-Venegas (2012), Plate interaction in the NE Caribbean subduction zone from continuous GPS observations, Geophys

  6. CONGESTION IN THE ISO-NE ELECTRICITY MARKETS ANNA BARBARA IHRIG

    E-Print Network [OSTI]

    Gross, George

    CONGESTION IN THE ISO-NE ELECTRICITY MARKETS BY ANNA BARBARA IHRIG THESIS Advisor: Prof. George in charge of operation and control, the ISO-NE. We describe how the ISO-NE administers the energy market in causing congestion is analyzed; no significant correlation was found. In addition, the impacts of the ISO

  7. Overview of DOE-NE Proliferation and Terrorism Risk Assessment

    SciTech Connect (OSTI)

    Sadasivan, Pratap [Los Alamos National Laboratory

    2012-08-24T23:59:59.000Z

    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.

  8. MiniBooNE "Windows on the Universe"

    SciTech Connect (OSTI)

    Stefanski, Ray; /Fermilab

    2010-12-09T23:59:59.000Z

    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.'

  9. [NeII] emission line profiles from photoevaporative disc winds

    E-Print Network [OSTI]

    R. D. Alexander

    2008-09-01T23:59:59.000Z

    I model profiles of the [NeII] forbidden emission line at 12.81um, emitted by photoevaporative winds from discs around young, solar-mass stars. The predicted line luminosities (~ 1E-6 Lsun) are consistent with recent data, and the line profiles vary significantly with disc inclination. Edge-on discs show broad (30-40km/s) double-peaked profiles, due to the rotation of the disc, while in face-on discs the structure of the wind results in a narrower line (~10km/s) and a significant blue-shift (5-10km/s). These results suggest that observations of [NeII] line profiles can provide a direct test of models of protoplanetary disc photoevaporation.

  10. Neutron Hole States of Mo-93,95

    E-Print Network [OSTI]

    Bindal, P. K.; Youngblood, David H.; Kozub, R. L.

    1977-01-01T23:59:59.000Z

    - topes but less than half is observed for '"Mo. The hole strength distributions for l =1 and 4 are displayed in Fig. 10 for all the Mo isotopes. It is apparent from this figure that the states corres- ponding to lgg/2 2Py/2 and 2P, /, orbitals, which...

  11. Neutrino and Antineutrino Cross sections at MiniBooNE

    SciTech Connect (OSTI)

    Dharmapalan, Ranjan; /Alabama U.

    2011-10-01T23:59:59.000Z

    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.

  12. Neutrino scattering off the stable even-even Mo isotopes

    SciTech Connect (OSTI)

    Balasi, K. G.; Kosmas, T. S.; Divari, P. C. [Theoretical Physics Section, University of Ioannina, GR 45110 Ioannina (Greece)

    2009-11-09T23:59:59.000Z

    Inelastic neutrino-nucleus reaction cross sections are studied focusing on the neutral current processes. Particularly, we investigate the angular and initial neutrino-energy dependence of the differential and integrated cross sections for low and intermediate energies of the incoming neutrino. The nuclear wave functions for the initial and final nuclear states are constructed in the context of the quasi-particle random phase approximation (QRPA) tested on the reproducibility of the low-lying energy spectrum. The results presented here refer to the isotopes Mo{sup 92}, Mo{sup 94}, Mo{sup 96}, Mo{sup 98} and Mo{sup 100}. These isotopes could play a significant role in supernova neutrino detection in addition to their use in double-beta and neutrinoless double-beta decay experiments (e.g. MOON, NEMO III)

  13. Time-Resolved Measurement of Interatomic Coulombic Decay in Ne_2

    E-Print Network [OSTI]

    Schnorr, K; Kurka, M; Rudenko, A; Foucar, L; Schmid, G; Broska, A; Pfeifer, T; Meyer, K; Anielski, D; Boll, R; Rolles, D; Kbel, M; Kling, M F; Jiang, Y H; Mondal, S; Tachibana, T; Ueda, K; Marchenko, T; Simon, M; Brenner, G; Treusch, R; Scheit, S; Averbukh, V; Ullrich, J; Schrter, C D; Moshammer, R

    2013-01-01T23:59:59.000Z

    The lifetime of interatomic Coulombic decay (ICD) [L. S. Cederbaum et al., Phys. Rev. Lett. 79, 4778 (1997)] in Ne_2 is determined via an extreme ultraviolet pump-probe experiment at the Free-Electron Laser in Hamburg. The pump pulse creates a 2s inner-shell vacancy in one of the two Ne atoms, whereupon the ionized dimer undergoes ICD resulting in a repulsive Ne^{+}(2p^{-1}) - Ne^{+}(2p^{-1}) state, which is probed with a second pulse, removing a further electron. The yield of coincident Ne^{+} - Ne^{2+} pairs is recorded as a function of the pump-probe delay, allowing us to deduce the ICD lifetime of the Ne_{2}^{+}(2s^{-1}) state to be (150 +/- 50) fs in agreement with quantum calculations.

  14. Beta decay of 32Ar for fundamental tests

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    of 32 Ar and 33 Ar data 1999 result: 0.9980(52) stat (39) syst Adelberger et al., PRL 83 (1999) 1299 But, since then... * Precision measurement of 32 S(p,p) 32 S 3374.7-...

  15. Demonstration of resonant photopumping of Mo VII by Mo XII for a VUV laser near 600 {Angstrom}

    SciTech Connect (OSTI)

    Ilcisin, K.J.; Aumayr, F.; Schwob, J.L.; Suckewer, S.

    1993-09-01T23:59:59.000Z

    We present data of experiments on the resonant photopumping of Mo VII by Mo XII as a method of generating a coherent VUV source near 600 {angstrom}. The experiment is based on a scheme proposed by Feldman and Reader in which the 4p{sup 6} -- 4p{sup 5}6s transition in Mo VII in resonantly photopumped by the 5s {sup 2}S{sub 1/2} -- 4p {sup 2}P{sub 1/2} transition in Mo XII. Results of the laser produced plasma experiments show the successful enhancement of the population of the Mo VII 4p{sup 5}6s upper lasing level when pumped by an adjacent Mo VII plasma. No enhancement was seen in a control experiment where the Mo VII plasma was pumped by a Zr X plasma. Improvements of the intensity of the Mo XII pump source, achieved using an additional pump laser, lead to the generation of a population inversion for the VUV transition.

  16. Estimations of Mo X-pinch plasma parameters on QiangGuang-1 facility by L-shell spectral analyses

    SciTech Connect (OSTI)

    Wu, Jian; Qiu, Aici [State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Shaanxi 710049 (China) [State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Shaanxi 710049 (China); State Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi'an 710024 (China); Li, Mo; Wang, Liangping; Wu, Gang; Ning, Guo; Qiu, Mengtong [State Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi'an 710024 (China)] [State Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi'an 710024 (China); Li, Xingwen [State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Shaanxi 710049 (China)] [State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Shaanxi 710049 (China)

    2013-08-15T23:59:59.000Z

    Plasma parameters of molybdenum (Mo) X-pinches on the 1-MA QiangGuang-1 facility were estimated by L-shell spectral analysis. X-ray radiation from X-pinches had a pulsed width of 1 ns, and its spectra in 23 keV were measured with a time-integrated X-ray spectrometer. Relative intensities of spectral features were derived by correcting for the spectral sensitivity of the spectrometer. With an open source, atomic code FAC (flexible atomic code), ion structures, and various atomic radiative-collisional rates for O-, F-, Ne-, Na-, Mg-, and Al-like ionization stages were calculated, and synthetic spectra were constructed at given plasma parameters. By fitting the measured spectra with the modeled, Mo X-pinch plasmas on the QiangGuang-1 facility had an electron density of about 10{sup 21} cm{sup ?3} and the electron temperature of about 1.2 keV.

  17. ar avalanche detector: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    (74:20:6), ArCF4CH4 (67:30:3), ArCF4CO2 (65:30:5) mixtures for the HERA-B Muon Detector HEP - Experiment (arXiv) Summary: The Muon Detector of the HERA-B experiment at DESY...

  18. Old Sol's new use Fourteen solar ar-

    E-Print Network [OSTI]

    Inside &ONLINE Old Sol's new use Fourteen solar ar- rays grace the rooftops of two HRES buildings therebelgroupInterahamwefoundheron the road in a remote region in the eastern Democratic Republic of the Congo- ductingfocusgroupinterviewswithmem- bers of the community. Looking horrorin theface HHI researchers don't flinch in examination

  19. A novel three dimensional semimetallic MoS{sub 2}

    SciTech Connect (OSTI)

    Tang, Zhen-Kun [Beijing Computational Science Research Center, Beijing 100084 (China); Departments of Physics and Electronics, Hengyang Normal University, Hengyang 421008 (China); Zhang, Hui; Liu, Li-Min, E-mail: limin.liu@csrc.ac.cn [Beijing Computational Science Research Center, Beijing 100084 (China); Liu, Hao [Chengdu Green Energy and Green Manufacturing Technology R and D Center, Chengdu, Sichuan 610207 (China); Lau, Woon-Ming [Beijing Computational Science Research Center, Beijing 100084 (China); Chengdu Green Energy and Green Manufacturing Technology R and D Center, Chengdu, Sichuan 610207 (China)

    2014-05-28T23:59:59.000Z

    Transition metal dichalcogenides (TMDs) have many potential applications, while the performances of TMDs are generally limited by the less surface active sites and the poor electron transport efficiency. Here, a novel three-dimensional (3D) structure of molybdenum disulfide (MoS{sub 2}) with larger surface area was proposed based on first-principle calculations. 3D layered MoS{sub 2} structure contains the basal surface and joint zone between the different nanoribbons, which is thermodynamically stable at room temperature, as confirmed by first principles molecular dynamics calculations. Compared the two-dimensional layered structures, the 3D MoS{sub 2} not only owns the large surface areas but also can effectively avoid the aggregation. Interestingly, although the basal surface remains the property of the intrinsic semiconductor as the bulk MoS{sub 2}, the joint zone of 3D MoS{sub 2} exhibits semimetallic, which is derived from degenerate 3d orbitals of the Mo atoms. The high stability, large surface area, and high conductivity make 3D MoS{sub 2} have great potentials as high performance catalyst.

  20. Diffusion Barrier Selection from Refractory Metals (Zr, Mo and Nb) via Interdiffusion Investigation for U-Mo RERTR Fuel Alloy

    SciTech Connect (OSTI)

    K. Huang; C. Kammerer; D. D. Keiser, Jr.; Y. H. Sohn

    2014-04-01T23:59:59.000Z

    U-Mo alloys are being developed as low enrichment monolithic fuel under the Reduced Enrichment for Research and Test Reactor (RERTR) Program. Diffusional interactions between the U-Mo fuel alloy and Al-alloy cladding within the monolithic fuel plate construct necessitate incorporation of a barrier layer. Fundamentally, a diffusion barrier candidate must have good thermal conductivity, high melting point, minimal metallurgical interaction, and good irradiation performance. Refractory metals, Zr, Mo, and Nb are considered based on their physical properties, and the diffusion behavior must be carefully examined first with U-Mo fuel alloy. Solid-to-solid U-10wt.%Mo vs. Mo, Zr, or Nb diffusion couples were assembled and annealed at 600, 700, 800, 900 and 1000 degrees C for various times. The interdiffusion microstructures and chemical composition were examined via scanning electron microscopy and electron probe microanalysis, respectively. For all three systems, the growth rate of interdiffusion zone were calculated at 1000, 900 and 800 degrees C under the assumption of parabolic growth, and calculated for lower temperature of 700, 600 and 500 degrees C according to Arrhenius relationship. The growth rate was determined to be about 10 3 times slower for Zr, 10 5 times slower for Mo and 10 6 times slower for Nb, than the growth rates reported for the interaction between the U-Mo fuel alloy and pure Al or Al-Si cladding alloys. Zr, however was selected as the barrier metal due to a concern for thermo- mechanical behavior of UMo/Nb interface observed from diffusion couples, and for ductile-to-brittle transition of Mo near room temperature.

  1. Effect of Mo Dispersion Size and Water Vapor on Oxidation of Two-Phase Directionally Solidified NiAl-9Mo In-Situ Composites

    SciTech Connect (OSTI)

    Brady, Michael P [ORNL] [ORNL; Bei, Hongbin [ORNL] [ORNL; Meisner, Roberta Ann [ORNL] [ORNL; Lance, Michael J [ORNL] [ORNL; Tortorelli, Peter F [ORNL] [ORNL

    2014-01-01T23:59:59.000Z

    Oxidation of two-phase NiAl-9Mo eutectics with 3 different growth rates/2nd phase Mo dispersion sizes were investigated at 900 C in air and air with 10% water vapor. Good oxidation resistance via alumina formation was observed in dry air, with Mo volatilization loss minimized by fine submicron Mo dispersions. However, extensive Mo volatilization and in-place internal oxidation of prior Mo phase regions was observed in wet air oxidation. Ramifications of this phenomenon for the development of multi-phase high-temperature alloys are discussed

  2. {sup 18}Ne production for the Beta beams project

    SciTech Connect (OSTI)

    Hodk, Rastislav [Institute of Experimental and Applied Physics, CTU in Prague, Horsk 3/22a, CZ-12800 Prague (Czech Republic); Mendona, Tania M. [IFIMUP and IN - Institute of Nanosciences and Nanotechnologies, Rua do Campo Alegre 687, 4169-007 Porto, Portugal and CERN, CH-1211 Geneva 23 (Swaziland); Stora, Thierry [CERN, CH-1211 Geneva 23 (Switzerland)

    2013-12-30T23:59:59.000Z

    Intense relativistic (anti)neutrino beams are an unique tool required to study fundamental properties of neutrinos such as neutrino oscillation parameters, as well as their Majorana or Dirac nature, the lepton number conservation hypothesis and the absolute neutrino mass scale. Such beams originate from acceleration of ?-decaying radioactive ions (Beta beams). A molten fluoride salt target has been developed for the production of the required rates of low-Q baseline isotope {sup 18}Ne for the Beta beams project. The prototyped unit has been tested on-line at ISOLDE-CERN. In this contribution an overview of the prototyping and on-line tests is presented.

  3. The MicroBooNE Experiment - At Work

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItemResearch >Internship Program The NIF andPoints of Fasterdata IPv6theMicroBooNE at

  4. DOE NE Used Fuel Disposition FY2015 Working Group Presentations

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power Administration wouldDECOMPOSITION OF CALCIUMCOST MANAGEMENT REPORT SRM/ATY 1DepartmentNE

  5. Municipal Energy Agency of NE | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluatingGroup |JilinLu anMicrogreenMoon LakeMountainMunicipal Energy Agency of NE Jump

  6. The MicroBooNE Experiment - Home Page

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem NotEnergy, science,SpeedingWu,IntelligenceYou are hereNewsOurADMicroBooNE The

  7. MicroBooNE Project Critical Decision Documents

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |IsLove Your HomeOverview andSinatra EngineeringMicroBooNE

  8. MicroBooNE TPC Wires Image Map

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |IsLove Your HomeOverview andSinatraMicroBooNE Proposal AddendumImage

  9. MicroBooNE TPC Wires Image Map

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |IsLove Your HomeOverview andSinatraMicroBooNE Proposal

  10. Fracture and fatigue resistance of MoSiB alloys for ultrahigh-temperature structural applications

    E-Print Network [OSTI]

    Ritchie, Robert

    Fracture and fatigue resistance of MoSiB alloys for ultrahigh-temperature structural applicationsMo3SiMo5SiB2 alloys, which utilize a continuous a-Mo matrix to achieve unprecedented room. Introduction For applications such as aerospace engines and power generation, future advancements are limited

  11. Oxidation, Reduction, and Condensation of Alcohols over (MO3...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Alcohols over (MO3)3 (MMo, W) Nanoclusters . Abstract: The reactions of deuterated methanol, ethanol, 1-propanol, 1-butanol, 2-propanol, 2-butanol and t-butanol over cyclic...

  12. Co-Mo Electric Cooperative- Residential Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Co-Mo Electric Cooperative provides rebates to residential and commercial members who install air source, dual fuel, and/or geothermal heat pumps, and certain energy efficient appliances. The...

  13. 9 Cr-- 1 Mo steel material for high temperature application

    DOE Patents [OSTI]

    Jablonski, Paul D; Alman, David; Dogan, Omer; Holcomb, Gordon; Cowen, Christopher

    2012-11-27T23:59:59.000Z

    One or more embodiments relates to a high-temperature, titanium alloyed, 9 Cr-1 Mo steel exhibiting improved creep strength and oxidation resistance at service temperatures up to 650.degree. C. The 9 Cr-1 Mo steel has a tempered martensite microstructure and is comprised of both large (0.5-3 .mu.m) primary titanium carbides and small (5-50 nm) secondary titanium carbides in a ratio of. from about 1:1.5 to about 1.5:1. The 9 Cr-1 Mo steel may be fabricated using exemplary austenizing, rapid cooling, and tempering steps without subsequent hot working requirements. The 9 Cr-1 Mo steel exhibits improvements in total mass gain, yield strength, and time-to-rupture over ASTM P91 and ASTM P92 at the temperature and time conditions examined.

  14. Q value of the 100Mo Double-Beta Decay

    E-Print Network [OSTI]

    S. Rahaman; V. -V. Elomaa; T. Eronen; J. Hakala; A. Jokinen; J. Julin; A. Kankainen; A. Saastamoinen; J. Suhonen; C. Weber; J. yst

    2007-12-20T23:59:59.000Z

    Penning trap measurements using mixed beams of 100Mo - 100Ru and 76Ge - 76Se have been utilized to determine the double-beta decay Q-values of 100Mo and 76Ge with uncertainties less than 200 eV. The value for 76Ge, 2039.04(16) keV is in agreement with the published SMILETRAP value. The new value for 100Mo, 3034.40(17) keV is 30 times more precise than the previous literature value, sufficient for the ongoing neutrinoless double-beta decay searches in 100Mo. Moreover, the precise Q-value is used to calculate the phase-space integrals and the experimental nuclear matrix element of double-beta decay.

  15. Ethanol Conversion on Cyclic (MO3)3 (M = Mo, W) Clusters

    SciTech Connect (OSTI)

    Li, Zhenjun; Fang, Zongtang; Kelley, Matthew S.; Kay, Bruce D.; Rousseau, Roger J.; Dohnalek, Zdenek; Dixon, David A.

    2014-03-06T23:59:59.000Z

    Oxides of molybdenum and tungsten are an important class of catalytic materials with applications ranging from isomerization of alkanes and alkenes, partial oxidation of alcohols, selective reduction of nitric oxide and metathesis of alkeness.[1-10] While many studies have focused on the structure - function relationships, the nature of high catalytic activity is still being extensively investigated. There is a general agreement that the activity of supported MOx (M = W, Mo) catalysts is correlated with the presence of acidic sites, where the catalytic activity is strongly affected by the type of oxide support, delocalization of electron density, structures of tungsten oxide domains and presence of protons

  16. NE-23 List of California Sites Hattie Carwell. SAN/NSQA Division

    Office of Legacy Management (LM)

    Andrew Wallo III, Designation and Certification Manager Division of Facilitv and Site Decommissioning Projects Dffice of Nuclear Energy bee: W. Murphie, NE-23 J. Wagoners,...

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

    Open Energy Info (EERE)

    Study For Geothermal Exploration In The Ne German Basin- Integrated Interpretation Of Seismic Tomography, Litho-Stratigraphy, Salt Tectonics, And Thermal Structure Jump to:...

  18. Quasielastic Scattering at MiniBooNE Energies

    SciTech Connect (OSTI)

    Alvarez-Ruso, L. [Departamento de Fisica, Universidad de Murcia (Spain); Departamento de Fisica, Centro de Fisica Computacional, Universidade de Coimbra (Portugal); Buss, O.; Leitner, T.; Mosel, U. [Institut fuer Theoretische Physik, Universitaet Giessen (Germany)

    2009-11-25T23:59:59.000Z

    We present our description of neutrino induced charged current quasielastic scattering (CCQE) in nuclei at energies relevant for the MiniBooNE experiment. In our framework, the nucleons, with initial momentum distributions according to the Local Fermi Gas model, move in a density- and momentum-dependent mean field potential. The broadening of the outgoing nucleons due to nucleon-nucleon interactions is taken into account by spectral functions. Long range (RPA) correlations renormalizing the electroweak strength in the medium are also incorporated. The background from resonance excitation events that do not lead to pions in the final state is also predicted by propagating the outgoing hadrons with the Giessen semiclassical BUU model in coupled channels (GiBUU). We achieve a good description of the shape of the CCQE Q{sup 2} distribution extracted from data by MiniBooNE, thanks to the inclusion of RPA correlations, but underestimate the integrated cross section when the standard value of M{sub A} = 1 GeV is used. Possible reasons for this mismatch are discussed.

  19. MoSe2 thin films synthesized by solid state reactions between Mo and Se J. Pouzet (1) and J. C. Bernede (2)

    E-Print Network [OSTI]

    Boyer, Edmond

    807 MoSe2 thin films synthesized by solid state reactions between Mo and Se thin films J. Pouzet (1 reaction, induced by annealing, between the Mo and Se constituents in thin films form. The films have been thin films annealed under selenium pressure at only 770 K are well crystallized. The electrical

  20. Coated U(Mo) Fuel: As-Fabricated Microstructures

    SciTech Connect (OSTI)

    Emmanuel Perez; Dennis D. Keiser, Jr.; Ann Leenaers; Sven Van den Berghe; Tom Wiencek

    2014-04-01T23:59:59.000Z

    As part of the development of low-enriched uranium fuels, fuel plates have recently been tested in the BR-2 reactor as part of the SELENIUM experiment. These fuel plates contained fuel particles with either Si or ZrN thin film coating (up to 1 m thickness) around the U-7Mo fuel particles. In order to best understand irradiation performance, it is important to determine the starting microstructure that can be observed in as-fabricated fuel plates. To this end, detailed microstructural characterization was performed on ZrN and Si-coated U-7Mo powder in samples taken from AA6061-clad fuel plates fabricated at 500C. Of interest was the condition of the thin film coatings after fabrication at a relatively high temperature. Both scanning electron microscopy and transmission electron microscopy were employed. The ZrN thin film coating was observed to consist of columns comprised of very fine ZrN grains. Relatively large amounts of porosity could be found in some areas of the thin film, along with an enrichment of oxygen around each of the the ZrN columns. In the case of the pure Si thin film coating sample, a (U,Mo,Al,Si) interaction layer was observed around the U-7Mo particles. Apparently, the Si reacted with the U-7Mo and Al matrix during fuel plate fabrication at 500C to form this layer. The microstructure of the formed layer is very similar to those that form in U-7Mo versus Al-Si alloy diffusion couples annealed at higher temperatures and as-fabricated U-7Mo dispersion fuel plates with Al-Si alloy matrix fabricated at 500C.

  1. Neutrino Cross Section Measurements @ SciBooNE

    SciTech Connect (OSTI)

    Mariani, C.; /Columbia U.

    2011-10-01T23:59:59.000Z

    We report measurements of cross sections of neutrinos of 0.7 GeV average energy scattering off a carbon target cross sections with by the SciBooNE experiment at Fermilab. These measurements are important inputs for current and future accelerator-based neutrino oscillation experiments in the interpretation of neutrino oscillation signals. The measurement of neutrino mixing angle {theta}{sub 13} is one of the most important goals in current neutrino experiments. For the current and next generation of long baseline neutrino oscillation experiments, T2K, NOvA and LBNE, the precise measurement of neutrino-nucleus cross sections in the few GeV energy range is an essential ingredient in the interpretation of neutrino oscillation signals.

  2. Effective versus ion thermal temperatures in the Weizmann Ne Z-pinch: Modeling and stagnation physics

    E-Print Network [OSTI]

    Kroupp, Eyal

    Effective versus ion thermal temperatures in the Weizmann Ne Z-pinch: Modeling and stagnation of Technology, Haifa, Israel 5 National Security Technologies, LLC, Las Vegas, Nevada 89144, USA (Received 23 thermal and effective temperatures is investigated through simulations of the Ne gas puff z-pinch reported

  3. N.E. Leonard U. Pisa 18-20 April 2007Slide 1 Cooperative Control

    E-Print Network [OSTI]

    Leonard, Naomi

    1 N.E. Leonard ­ U. Pisa ­ 18-20 April 2007Slide 1 Cooperative Control and Mobile Sensor Networks Application to Mobile Sensor Networks, Part II Naomi Ehrich Leonard Mechanical and Aerospace Engineering.princeton.edu/~naomi N.E. Leonard ­ U. Pisa ­ 18-20 April 2007Slide 2 Key References [1] Leonard, Paley, Lekien

  4. N.E. Leonard U. Pisa 18-20 April 2007Slide 1 Cooperative Control

    E-Print Network [OSTI]

    Leonard, Naomi

    1 N.E. Leonard ­ U. Pisa ­ 18-20 April 2007Slide 1 Cooperative Control and Mobile Sensor Networks Introduction Naomi Ehrich Leonard Mechanical and Aerospace Engineering Princeton University and Electrical Systems and Automation University of Pisa naomi@princeton.edu, www.princeton.edu/~naomi N.E. Leonard ­ U

  5. N.E. Leonard U. Pisa 18-20 April 2007Slide 1 Cooperative Control

    E-Print Network [OSTI]

    Leonard, Naomi

    1 N.E. Leonard ­ U. Pisa ­ 18-20 April 2007Slide 1 Cooperative Control and Mobile Sensor Networks Cooperative Control, Part I, A-C Naomi Ehrich Leonard Mechanical and Aerospace Engineering Princeton.princeton.edu/~naomi N.E. Leonard ­ U. Pisa ­ 18-20 April 2007Slide 2 Natural Groups Photo by Norbert Wu Exhibit

  6. N.E. Leonard U. Pisa 18-20 April 2007Slide 1 Cooperative Control

    E-Print Network [OSTI]

    Leonard, Naomi

    1 N.E. Leonard ­ U. Pisa ­ 18-20 April 2007Slide 1 Cooperative Control and Mobile Sensor Networks Cooperative Control, Part I, D-F Naomi Ehrich Leonard Mechanical and Aerospace Engineering Princeton.princeton.edu/~naomi N.E. Leonard ­ U. Pisa ­ 18-20 April 2007Slide 2 Outline and Key References A. Artificial Potentials

  7. N.E. Leonard U. Pisa 18-20 April 2007Slide 1 Cooperative Control

    E-Print Network [OSTI]

    Leonard, Naomi

    1 N.E. Leonard ­ U. Pisa ­ 18-20 April 2007Slide 1 Cooperative Control and Mobile Sensor Networks Application to Mobile Sensor Networks, Part I Naomi Ehrich Leonard Mechanical and Aerospace Engineering.princeton.edu/~naomi N.E. Leonard ­ U. Pisa ­ 18-20 April 2007Slide 2 Outline 1. Introduction to cooperative control

  8. THE GENESIS SOLAR WIND CONCENTRATOR TARGET: MASS FRACTIONATION CHARACTERISED BY NE ISOTOPES

    SciTech Connect (OSTI)

    WIENS, ROGER C. [Los Alamos National Laboratory; OLINGER, C. [Los Alamos National Laboratory; HEBER, V.S. [Los Alamos National Laboratory; REISENFELD, D.B. [Los Alamos National Laboratory; BURNETT, D.S. [Los Alamos National Laboratory; ALLTON, J.H. [Los Alamos National Laboratory; BAUR, H. [Los Alamos National Laboratory; WIECHERT, U. [Los Alamos National Laboratory; WIELER, R. [Los Alamos National Laboratory

    2007-01-02T23:59:59.000Z

    The concentrator on Genesis provides samples of increased fluences of solar wind ions for precise determination of the oxygen isotopic composition of the solar wind. The concentration process caused mass fractionation as function of the radial target position. They measured the fractionation using Ne released by UV laser ablation along two arms of the gold cross from the concentrator target to compare measured Ne with modeled Ne. The latter is based on simulations using actual conditions of the solar wind during Genesis operation. Measured Ne abundances and isotopic composition of both arms agree within uncertainties indicating a radial symmetric concentration process. Ne data reveal a maximum concentration factor of {approx} 30% at the target center and a target-wide fractionation of Ne isotopes of 3.8%/amu with monotonously decreasing {sup 20}Ne/{sup 22}Ne ratios towards the center. The experimentally determined data, in particular the isotopic fractionation, differ from the modeled data. They discuss potential reasons and propose future attempts to overcome these disagreements.

  9. Optogalvanic isotope enrichment of Cu ions in Cu-Ne positive column discharges

    E-Print Network [OSTI]

    Kushner, Mark

    Optogalvanic isotope enrichment of Cu ions in Cu-Ne positive column discharges M. J. Kushner The isotopic enrichment of copper ions in a positive column Cu-Ne discharge using optogalvanic excitation the 63-amu isotope of copper is enriched relative to the neutral abundance. Enrichment as large as 10

  10. ccsd00000561 Proton Zemach radius from measurements of the hyper ne

    E-Print Network [OSTI]

    ccsd00000561 (version 1) : 25 Aug 2003 Proton Zemach radius from measurements of the hyper#12;ne and discuss the information about the electromagnetic structure of protons that could be extracted from theoretical results on the proton polarizability e#11;ects and the experimental hydrogen hyper#12;ne splitting

  11. Extractors for LowWeight A#ne Sources Institute for Advanced Study

    E-Print Network [OSTI]

    Anderson, Richard

    to solve this problem. These are functions that are easy to invert given the en tire output, but very hardExtractors for LowWeight A#ne Sources Anup Rao # Institute for Advanced Study arao . An extractor for entropy k a#ne sources is a function A#Ext : F n # {0, 1} m such that for any such source X

  12. The Cretaceous/ Tertiary boundary: sedimentology and micropalaeontology at El Mulato section, NE Mexico

    E-Print Network [OSTI]

    Royer, Dana

    The Cretaceous/ Tertiary boundary: sedimentology and micropalaeontology at El Mulato section, NE and sedimentological analysis of this transition at the El Mulato section (NE Mexico), in order to infer the little Palaeogene Velasco Formation, there is a 2-m-thick Clastic Unit. Strati- graphical and sedimentological ana

  13. ar diffusion coefficient: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    diffusion is examined. Kazuhiko Seki; Saurabh Mogre; Shigeyuki Komura 2014-02-05 4 Fractal diffusion coefficient from dynamical zeta functions Nonlinear Sciences (arXiv)...

  14. ar kr xe: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Detectors, Gas Electron Multipliers, Geiger-mode APDs. . .. 12 85 Neutrinoless Double Beta Decay of 134Xe HEP - Phenomenology (arXiv) Summary: In view of recent great...

  15. ArKion Systems | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcatAntrim County,Delhi (NCT), IndiaOpenAquate SolarArKion Systems

  16. Agricultural Research Service (ARS) Research Participation Program -

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041cloth DocumentationProducts (VAP) VAP7-0973Managed by ORAU Agricultural Research Service (ARS)

  17. Liquid Argon scintillation light quenching due to Nitrogen impurities : measurements performed for the MicroBooNE vertical slice test

    E-Print Network [OSTI]

    Chiu, Christie Shinglei

    2013-01-01T23:59:59.000Z

    The neutrino experiment MicroBooNE is currently under construction. To expedite the physics output of MicroBooNE, a smaller version of its optical detection system has been implemented. To demonstrate full operability of ...

  18. Multiphonon resonant Raman scattering in MoS{sub 2}

    SciTech Connect (OSTI)

    Go?asa, K., E-mail: Katarzyna.Golasa@fuw.edu.pl; Grzeszczyk, M.; Wysmo?ek, A.; Babi?ski, A. [Faculty of Physics, University of Warsaw, ul. Ho?a 69, 00-681 Warszawa (Poland); Leszczy?ski, P.; Faugeras, C.; Nicolet, A. A. L.; Potemski, M. [Laboratoire National des Champs Magntiques Intenses, CNRS-UJF-UPS-INSA, 25, avenue des Martyrs, 38042 Grenoble (France)

    2014-03-03T23:59:59.000Z

    Optical emission spectrum of a resonantly (??=?632.8?nm) excited molybdenum disulfide (MoS{sub 2}) is studied at liquid helium temperature. More than 20 peaks in the energy range spanning up to 1400?cm{sup ?1} from the laser line, which are related to multiphonon resonant Raman scattering processes, are observed. The attribution of the observed lines involving basic lattice vibrational modes of MoS{sub 2} and both the longitudinal (LA(M)) and the transverse (TA(M) and/or ZA(M)) acoustic phonons from the vicinity of the high-symmetry M point of the MoS{sub 2} Brillouin zone is proposed.

  19. Identification of phases in the interaction layer between U-Mo-Zr/Al and U-Mo-Zr/Al-Si

    SciTech Connect (OSTI)

    Varela, C.L. Komar; Arico, S.F.; Mirandou, M.; Balart, S.N. [Departamento Materiales, GIDAT, GAEN, CNEA, Avda. Gral Paz 1499, B1650KNA, San Martin (Argentina); Gribaudo, L.M. [Departamento Materiales, GIDAT, GAEN, CNEA, Avda. Gral Paz 1499, B1650KNA, San Martin (Argentina); CONICET, Avda. Rivadavia 1917, C1033AAJ, Buenos Aires (Argentina)

    2008-07-15T23:59:59.000Z

    Out-of-pile diffusion experiments were performed between U-7wt.% Mo-1wt.% Zr and Al or Al A356 (7,1wt.% Si) at 550 deg. C. In this work morphological characterization and phase identification on both interaction layer are presented. They were carried out by the use of different techniques: optical and scanning electron microscopy, X-Ray diffraction and WDS microanalysis. In the interaction layer U-7wt.% Mo-1wt.% Zr/Al, the phases UAl{sub 3}, UAl{sub 4}, Al{sub 20}Mo{sub 2}U and Al{sub 43}Mo{sub 4}U{sub 6} were identified. In the interaction layer U-7wt.% Mo-1wt.% Zr/Al A356, the phases U(Al, Si) with 25at.% Si and Si{sub 5}U{sub 3} were identified. This last phase, with a higher Si concentration, was identified with XRD Synchrotron radiation performed at the National Synchrotron Light Laboratory (LNLS), Campinas, Brasil. (author)

  20. Hydrotreatment of Athabasca bitumen derived gas oil over Ni-Mo, Ni-W, and Co-Mo catalysts

    SciTech Connect (OSTI)

    Diaz-Real, R.A.; Mann, R.S.; Sambi, I.S. (Univ. of Ottawa, Ontario (Canada). Dept. of Chemical Engineering)

    1993-07-01T23:59:59.000Z

    The hydrotreatment of Athabasca bitumen derived heavy gas oil containing 4.08% S and 0.49% N was carried out in a trickle bed reactor over Ni-W, Ni-Mo, and Co-Mo catalysts supported on zeolite-alumina-silica at 623-698 K, LHSV of 1-4, gas flow rate 890 m[sup 3][sub H2]/m[sup 3][sub oil] (5,000 sef/bbl), and pressure of 6.89 MPa. Analyses for viscosity, density, aniline point, ASTM mid boiling point distillation, C/H ratio, and percentage of N and S in the final product were carried out to characterize the product oil. The amounts of N and S removed indicated the hydrodenitrogenation and hydrodesulfurization activity of the catalysts. Results of zeolite-alumina-silica-supported catalysts are compared to those obtained with commercially available Ni-Mo, Ni-W, and Co-Mo on [gamma]-alumina. Ni-Mo supported on zeolite-alumina-silica was most active and could remove as much as 99 % S and 89% N present in the oil at 698 K. The data for HDN and HDS fitted the pseudo first order model. The kinetic model is described in detail.

  1. Coupling between JET Pedestal ne-Te and Outer Target Plate Recycling: Consequences for JET ITER-Like-Wall Operation

    E-Print Network [OSTI]

    Coupling between JET Pedestal ne-Te and Outer Target Plate Recycling: Consequences for JET ITER-Like-Wall Operation

  2. Mossbauer spectra of single-domain ne particle systems described using a multiple-level relaxation model for

    E-Print Network [OSTI]

    Ryan, Dominic

    Mossbauer spectra of single-domain #12;ne particle systems described using a multiple describes the Mossbauer spectra of real #12;ne particle systems at all temperatures of interest, and yields temperatures, when all moments are blocked, Mossbauer spectra can be described with static hyper#12;ne #12

  3. Reference Grant Holder Research Organisation Project Title NE/J005398/2 Professor Christopher Perry University of Exeter

    E-Print Network [OSTI]

    Grant Reference Grant Holder Research Organisation Project Title NE/J005398/2 Professor Christopher and resultant sediment records of the event. NE/J006122/1 Dr David Tappin NERC British Geological Survey Japan of severe wildfires on moorland carbon dynamics NE/J01141X/1 Dr Stephen G. Willis Durham University

  4. The MiniBooNE detector technical design report

    SciTech Connect (OSTI)

    I. Stancu et al.

    2003-04-18T23:59:59.000Z

    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.

  5. Representations and Properties of Generalized $A_r$ Statistics

    E-Print Network [OSTI]

    Mohammed Daoud

    2006-06-20T23:59:59.000Z

    A generalization of $A_r$ statistics is proposed and developed. The generalized $A_r$ quantum statistics is completely specified by a set of Jacobson generators satisfying a set of triple algebraic relations. Fock-Hilbert representations and Bargmann-Fock realizations are derived.

  6. Revised isotopic (40 Ar) age for the lamproite volcano of

    E-Print Network [OSTI]

    Utrecht, Universiteit

    Revised isotopic (40 Ar/39 Ar) age for the lamproite volcano of Cabezos Negros, Fortuna Basin (lamproites) of the Fortuna Basin in southeast Spain. This age is significantly older than earlier reported K. Because the volcanic rocks are intercalated in the stratigraphic sequence of the Fortuna Basin directly

  7. Effect of surface derived hydrocarbon impurities on Ar plasma properties

    SciTech Connect (OSTI)

    Fox-Lyon, Nick; Oehrlein, Gottlieb S., E-mail: Oehrlein@umd.edu [Department of Materials Science and Engineering and the Institute for Research and Applied Physics, University of Maryland, College Park, MD 20742 (United States); Godyak, Valery [Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI 48109-2122 (United States)

    2014-05-15T23:59:59.000Z

    The authors report on Langmuir probe measurements that show that hydrocarbon surfaces in contact with Ar plasma cause changes of electron energy distribution functions due to the flux of hydrogen and carbon atoms released by the surfaces. The authors compare the impact on plasma properties of hydrocarbon species gasified from an etching hydrocarbon surface with injection of gaseous hydrocarbons into Ar plasma. They find that both kinds of hydrocarbon injections decrease electron density and slightly increase electron temperatures of low pressure Ar plasma. For low percentages of impurities (?1% impurity in Ar plasma explored here), surface-derived hydrocarbon species and gas phase injected hydrocarbon molecules cause similar changes of plasma properties for the same number of hydrocarbon molecules injected into Ar with a decrease in electron density of ?4%.

  8. Structure And Radiation Damage Behavior Of Epitaxial CrxMo1-x...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    And Radiation Damage Behavior Of Epitaxial CrxMo1-x Alloy Thin Films On MgO. Structure And Radiation Damage Behavior Of Epitaxial CrxMo1-x Alloy Thin Films On MgO. Abstract:...

  9. Adsorption of Potassium on the MoS2(100) Surface: A First-Principles...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Potassium on the MoS2(100) Surface: A First-Principles Investigation. Adsorption of Potassium on the MoS2(100) Surface: A First-Principles Investigation. Abstract: Periodic density...

  10. High Capacity MoO3 Nanoparticle Li-Ion Battery Anode

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    energy functional were employed.) 10 AccomplishmentStatus Theoretical changes in Li-ion intercalated -MoO 3 Mo Li O * Four Li inserted in a theoretical nanoparticle. * 9 ps...

  11. Domestic production of medical isotope Mo-99 moves a step closer

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Domestic production of medical isotope Mo-99 Domestic production of medical isotope Mo-99 moves a step closer Irradiated uranium fuel has been recycled and reused for molybdenum-99...

  12. Ar/Ar ages from transitionally magnetized lavas on La Palma, Canary Islands, and the geomagnetic instability timescale

    E-Print Network [OSTI]

    Singer, Bradley S.

    Ar/Ar ages from transitionally magnetized lavas on La Palma, Canary Islands, and the geomagnetic the north and south walls of Barranco de los Tilos on the island of La Palma, Canary Islands, reveals from transitionally magnetized lavas on La Palma, Canary Islands, and the geomagnetic instability

  13. Energy gain spectroscopic study of Ar{sup q+}-Ar collisions at 40 qeV

    SciTech Connect (OSTI)

    Vancura, J.; Kostroun, V.O.

    1992-12-31T23:59:59.000Z

    Energy gain spectra of Ar{sup q+}(8 {le} q {le} 16) on Ar at 40 qeV collision energy and 0.4 qeV energy resolution are presented. Capture into definite states of the projectile is observed which seems to exhibit a definite even-odd projectile charge state dependence.

  14. MO"BIUS-INVARIANT KNOT ENERGIES R.B. KUSNER

    E-Print Network [OSTI]

    Sullivan, John M.

    for divergence-free vector fields which arise in modeling incompressible fluid flow.6,7These new knot energies MO"BIUS-INVARIANT KNOT ENERGIES R.B. KUSNER, Urbana, IL, USA 61801-2975 There has been recent interest in knot energies among mathematicians

  15. MO"BIUS-INVARIANT KNOT ENERGIES R.B. KUSNER

    E-Print Network [OSTI]

    for divergence-free vector fields which arise in modeling incompressible fluid flow.? These new knot energies may MO"BIUS-INVARIANT KNOT ENERGIES R.B. KUSNER, Urbana, IL, USA 61801-2975 There has been recent interest in knot energies among mathematicians

  16. Introduction THE YERINGTON DISTRICT, Nevada, contains porphyry Cu(Mo),

    E-Print Network [OSTI]

    Barton, Mark D.

    55 Introduction THE YERINGTON DISTRICT, Nevada, contains porphyry Cu(Mo), Cu skarn, Fe oxide with the Jurassic Yerington batholith, which serves as either host rock or as source for heat and ma- terials of the Yerington Porphyry Copper District: Magmatic to Nonmagmatic Sources of Hydrothermal Fluids, Their Flow Paths

  17. Thomas-Ehrman effect in a three-body model: $^{16}$Ne case

    E-Print Network [OSTI]

    L. V. Grigorenko; T. A. Golubkova; M. V. Zhukov

    2014-12-17T23:59:59.000Z

    The dynamic mechanism of the Thomas-Ehrman shift is studied in three-cluster systems by example of $^{16}$Ne and $^{16}$C isobaric mirror partners. We predict configuration mixings for $0^+$ and $2^+$ states in $^{16}$Ne and $^{16}$C. Large isospin symmetry breaking on the level of wave function component weights is demonstrated for these states and discussed as three-body mechanism of Thomas-Ehrman shift. It is shown that the description of the Coulomb displacement energies requires a consistency among three parameters: the $^{16}$Ne decay energy $E_T$, the $^{15}$F ground state energy $E_r$, and the configuration mixing parameters for the $^{16}$Ne/$^{16}$C $0^+$ and $2^+$ states. Basing on this analysis we infer the $^{15}$F $1/2^+$ ground state energy to be $E_r=1.39-1.42$ MeV.

  18. Application for Presidential Permit PP-400 TDI-NE - New England...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    and Comments of the Vermont Department of Public Service - August 6, 2014 Application for Presidential Permit PP-400 TDI-NE - New England Clean Power Link Project - Motion to...

  19. Combined U-Th/He and 40Ar/39Ar geochronology of post-shield lavas from the Mauna Kea and Kohala volcanoes, Hawaii

    SciTech Connect (OSTI)

    Aciego, S.M.; Jourdan, F.; DePaolo, D.J.; Kennedy, B.M.; Renne, P.R.; Sims, K.W.W.

    2009-10-01T23:59:59.000Z

    Late Quaternary, post-shield lavas from the Mauna Kea and Kohala volcanoes on the Big Island of Hawaii have been dated using the {sup 40}Ar/{sup 39}Ar and U-Th/He methods. The objective of the study is to compare the recently demonstrated U-Th/He age method, which uses basaltic olivine phenocrysts, with {sup 40}Ar/{sup 39}Ar ages measured on groundmass from the same samples. As a corollary, the age data also increase the precision of the chronology of volcanism on the Big Island. For the U-Th/He ages, U, Th and He concentrations and isotopes were measured to account for U-series disequilibrium and initial He. Single analyses U-Th/He ages for Hamakua lavas from Mauna Kea are 87 {+-} 40 ka to 119 {+-} 23 ka (2{sigma} uncertainties), which are in general equal to or younger than {sup 40}Ar/{sup 39}Ar ages. Basalt from the Polulu sequence on Kohala gives a U-Th/He age of 354 {+-} 54 ka and a {sup 40}Ar/{sup 39}Ar age of 450 {+-} 40 ka. All of the U-Th/He ages, and all but one spurious {sup 40}Ar/{sup 39}Ar ages conform to the previously proposed stratigraphy and published {sup 14}C and K-Ar ages. The ages also compare favorably to U-Th whole rock-olivine ages calculated from {sup 238}U - {sup 230}Th disequilibria. The U-Th/He and {sup 40}Ar/{sup 39}Ar results agree best where there is a relatively large amount of radiogenic {sup 40}Ar (>10%), and where the {sup 40}Ar/{sup 36}Ar intercept calculated from the Ar isochron diagram is close to the atmospheric value. In two cases, it is not clear why U-Th/He and {sup 40}Ar/{sup 39}Ar ages do not agree within uncertainty. U-Th/He and {sup 40}Ar/{sup 39}Ar results diverge the most on a low-K transitional tholeiitic basalt with abundant olivine. For the most alkalic basalts with negligible olivine phenocrysts, U-Th/He ages were unattainable while {sup 40}Ar/{sup 39}Ar results provide good precision even on ages as low as 19 {+-} 4 ka. Hence, the strengths and weaknesses of the U-Th/He and {sup 40}Ar/{sup 39}Ar methods are complimentary for basalts with ages of order 100-500 ka.

  20. Neutrino induced pion production at MiniBooNE and K2K energies

    SciTech Connect (OSTI)

    Leitner, T.; Buss, O.; Mosel, U. [Institut fuer Theoretische Physik, Universitaet Giessen (Germany); Alvarez-Ruso, L. [Departamento de Fisica, Centro de Fisica Computacional, Universidade de Coimbra (Portugal)

    2009-11-25T23:59:59.000Z

    We investigate charged and neutral current neutrino-induced incoherent pion production off nuclei within the GiBUU model at energies relevant for the MiniBooNE and K2K experiments. Special attention is paid to the entanglement between measured CCQE and CC1{pi}{sup +} cross sections. We further give predictions and compare to recent data measured at MiniBooNE.

  1. The growth and characterization of LiGd?(Mo0?)? single crystals

    E-Print Network [OSTI]

    Reimund, James Allyn

    1981-01-01T23:59:59.000Z

    ' C/second 37 Pyroelectric Current vs. Temperature dT/dt = 30' C/second 180' Domains (Gd (MoO ) ) 37 39 INTRODUCTION This thesis discusses the growth and some single crystalline properties of lithium-gadolinium-molybdate of the type LiGd (Mo...O ) 3 45' This compound is one of the three thus far discovered compounds of the lithium ? gadolinium-molybdate (LGMO) system. In general, this system can be expressed as Li2Mo04. XGd2(Mo04)3, where LiGd3(MoO, )5 4 5 single crystals synthesize when X...

  2. Single-crystal sup 40 Ar/ sup 39 Ar dating of the Olorgesailie Formation, southern Kenya rift

    SciTech Connect (OSTI)

    Deino, A. (Geochronology Center of the Inst. of Human Origins, Berkeley, CA (United States)); Potts, R. (Smithsonian Institution, Washington, DC (United States))

    1990-06-10T23:59:59.000Z

    Single-crystal laser fusion {sup 40}Ar/{sup 39}Ar analyses and several conventional bulk fusion {sup 40}K- {sup 40}Ar dates have been used to determine the age of volcaniclastic strata within the Olorgesailie Formation and of associated volcanic and sedimentary units of the southern Kenya rift. In the principal exposures along the southern edge of the Legemunge Plain, the formation spans the interval from approximately 500 to 1,000 ka. Deposition continued to the east along the Ol Keju Nyiro river where a tuff near the top of the formation has been dated at 215 ka. In these exposures, the formation is unconformably overlain by sediments dated at 49 ka. A possible source for the Olorgesailie tephra, the Ol Doinyo Nyokie volcanic complex, contains as ash flow dated at {approximately} 1 Ma, extending the known age range of this complex to encompass that of virtually the entire Olorgesailie Formation in the Legemunge Plain. These geologic examples illustrate the importance of the single-crystal {sup 40}Ar/{sup 39}Ar dating technique whereby contaminant, altered, or otherwise aberrant grains can be identified and eliminated from the determination of eruptive ages for reworked or altered pyroclastic deposits. The authors have presented a computer-modeling procedure based on an inverse-isochron analysis that promotes a more objective approach to trimming {sup 40}Ar/{sup 39}Ar isotope data sets of this type.

  3. MUSCLE ACTIVITY DETECTION FROM MYOELECTRIC SIGNALS BASED ON THE AR-GARCH MODEL

    E-Print Network [OSTI]

    Bouaynaya, Nidhal

    MUSCLE ACTIVITY DETECTION FROM MYOELECTRIC SIGNALS BASED ON THE AR-GARCH MODEL Ghulam Rasool Heteroscedastic (AR-GARCH) process, which captures the heteroscedasticity of the signal. The Akaike information cri- terion test confirms that the AR-GARCH model better fits the EMG signal than the stationary AR

  4. Patterns of Choice: The Prix Ars Electronica Jury Sessions

    E-Print Network [OSTI]

    Offenhuber, Dietmar

    This article investigates the social structures reflected in the annual jury sessions of the Prix Ars Electronica, a major media art competitionthe composition, the temporal evolution and ultimately the decisions of these ...

  5. NEGLIGIBLE CREEP CONDITIONS FOR MOD 9 CR 1 MO STEEL

    SciTech Connect (OSTI)

    Ren, Weiju [ORNL; Riou, Bernard [AREVA Group; Escaravage, Claude [AREVA Group; Swindeman, Robert W [ORNL; Cabrillat, Marie-Th?r?se [CEA Cadarache, St. Paul lex Durance, France; Allais, Lucien [CEA, Saclay, France

    2006-01-01T23:59:59.000Z

    Mod 9 Cr 1 Mo Steel (grade 91) is one of the materials envisaged for the Reactor Pressure Vessel of Very High Temperature Reactors. To avoid the implementation of a surveillance program covering the monitoring of the creep damage throughout the whole life of the reactor, it is recommended to operate the Reactor Pressure Vessel in the negligible creep regime. In this paper, the background of negligible creep criteria available in nuclear Codes is first recalled and their limitations were analyzed. Then, guidance for deriving criteria more appropriate for mod 9 Cr 1 Mo steel is provided. Finally, R&D actions in the U. S. and France to support the new approaches are discussed and recommended.

  6. Dislocations With Edge Components in Nanocrystalline bcc Mo

    SciTech Connect (OSTI)

    G. M. Cheng; W. Z. Xu; W. W. Jian; H. Yuan; M. H. Tsai; Y. T. Zhu; Y. F. Zhang; Paul C. Millett

    2013-07-01T23:59:59.000Z

    We report high-resolution transmission electron microscopy (HRTEM) observation of a high density of dislocations with edge components (approximately 1016 m-2) in nanocrystalline (NC) body-centered cubic (bcc) Mo prepared by high-pressure torsion. We also observed for the first time of the 1/2 <111> and <001> pure edge dislocations in NC Mo. Crystallographic analysis and image simulations reveal that the best way using HRTEM to study dislocations with edge components in bcc systems is to take images along <110> zone axis, from which it is possible to identify 1/2 <111> pure edge dislocations, and edge components of 1/2 <111> and <001> mixed dislocations. The <001> pure edge dislocations can only be identified from <100> zone axis. The high density of dislocations with edge components is believed to play a major role in the reduction of strain rate sensitivity in NC bcc metals and alloys.

  7. Charge and magnetic states of Mn-, Fe-, and Co-doped monolayer MoS{sub 2}

    SciTech Connect (OSTI)

    Lin, Xianqing [State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084 (China); Collaborative Innovation Center of Quantum Matter, Beijing 100084 (China); Department of Applied Physics, Zhejiang University of Technology, Hangzhou 310023 (China); Ni, Jun, E-mail: junni@mail.tsinghua.edu.cn [State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084 (China); Collaborative Innovation Center of Quantum Matter, Beijing 100084 (China)

    2014-07-28T23:59:59.000Z

    First-principles calculations have been performed to investigate the electronic and magnetic properties of monolayer MoS{sub 2} substitutionally doped with Mn, Fe, and Co in possible charge states (q). We find that the Mn, Fe, and Co dopants substituting for a Mo atom in monolayer MoS{sub 2} (Mn@Mo, Fe@Mo, and Co@Mo) are all magnetic in their neutral and charge states except in the highest positive charge states. Mn@Mo, Fe@Mo, and Co@Mo have the same highest negative charge states of q=?2 for chemical potential of electron just below the conduction band minimum, which corresponds to the electron doping. In the q=?2 state, Mn@Mo has a much larger magnetic moment than its neutral state with the antiferromagnetic coupling between the Mn dopant and its neighboring S atoms maintained, while Fe@Mo and Co@Mo have equal or smaller magnetic moments than their neutral states. The possible charge states of Mn@Mo, Fe@Mo, and Co@Mo and the variation of the magnetic moments for different dopants and charge states are due to the change of the occupation and energy of the anti-bonding defect levels in the band gap. The rich magnetic properties of the neutral and charge states suggest possible realization of the substitutionally Mn-, Fe-, and Co-doped monolayer MoS{sub 2} as dilute magnetic semiconductors.

  8. NO. REV. MO. _ ALSEP/LCRU EMC Test Results

    E-Print Network [OSTI]

    Rathbun, Julie A.

    NO. REV. MO. ATM 1050 _ ALSEP/LCRU EMC Test Results PAGE 1 OF 10 DATE 19 August 1971 The results of the ALSEP/LCRU EMC test are reported in this ATM. C~.·--~ s--·~e'Jn~,__')!).Prepared by:__~~~"f--.;;.~-------- Approved by: ~JM.MD. ithian #12;NO. RIV. NO. ATM 1050 ALSEP/LCRU EMC Test Results 2 10PAGE OF Aall

  9. Long-term corrosion of Cr-Mo steels in superheated steam at 482 and 538/sup 0/C. [21/4 Cr-1 Mo; 9 Cr-1 Mo; Sumitomo 9 Cr-2 Mo; Sandvik HT-9

    SciTech Connect (OSTI)

    Griess, J.C.; DeVan, J.H.; Maxwell, W.A.

    1980-01-01T23:59:59.000Z

    The corrosion of several Cr-Mo ferritic steels was investigated in superheated steam at an operating power plant. Tests were conducted at 482 and 538/sup 0/C (900 and 1000/sup 0/F) in a once-through loop for times up to 28,000 h. Chromium concentrations ranged from 2.0 to 11.3%, and the effect of surface preparation on corrosion was investigated. Only one of many specimens showed evidence of exfoliation at 482/sup 0/C, but at 538/sup 0/C exfoliation occurred on at least some of the specimens of most materials; the exceptions were the alloy with the highest chromium content (Sandvik HT-9), one heat of 9 Cr-1 Mo steel with the highest silicon content, and Sumitomo 9 Cr-2 Mo steel, which was in test for only 19,000 h. Parabolic oxidation kinetics adequately described the corrosion process for about the first year, after which corrosion rates were constant and lower than predicted from extrapolation of the initial part of the penetration versus time curves. With chromium concentrations between 2 and 9%, corrosion behavior was independent of chromium content, and corrosion was only slightly less with Sandvik HT-9. Corrosion was nearly independent of surface preparation, but in two cases the presence of mill scale on the surface prior to steam exposure seemed to retard oxidation in steam. 11 figures, 5 tables.

  10. IRRADIATION PERFORMANCE OF U-Mo MONOLITHIC FUEL

    SciTech Connect (OSTI)

    M.K. Meyer; J. Gan; J.-F. Jue; D.D. Keiser; E. Perez; A. Robinson; D.M. Wachs; N. Woolstenhulme; G.L. Hofman; Y.-S. Kim

    2014-04-01T23:59:59.000Z

    High-performance research reactors require fuel that operates at high specific power to high fission density, but at relatively low temperatures. Research reactor fuels are designed for efficient heat rejection, and are composed of assemblies of thin-plates clad in aluminum alloy. The development of low-enriched fuels to replace high-enriched fuels for these reactors requires a substantially increased uranium density in the fuel to offset the decrease in enrichment. Very few fuel phases have been identified that have the required combination of very-high uranium density and stable fuel behavior at high burnup. UMo alloys represent the best known tradeoff in these properties. Testing of aluminum matrix U-Mo aluminum matrix dispersion fuel revealed a pattern of breakaway swelling behavior at intermediate burnup, related to the formation of a molybdenum stabilized high aluminum intermetallic phase that forms during irradiation. In the case of monolithic fuel, this issue was addressed by eliminating, as much as possible, the interfacial area between U-Mo and aluminum. Based on scoping irradiation test data, a fuel plate system composed of solid U-10Mo fuel meat, a zirconium diffusion barrier, and Al6061 cladding was selected for development. Developmental testing of this fuel system indicates that it meets core criteria for fuel qualification, including stable and predictable swelling behavior, mechanical integrity to high burnup, and geometric stability. In addition, the fuel exhibits robust behavior during power-cooling mismatch events under irradiation at high power.

  11. Single Phase Melt Processed Powellite (Ba,Ca) MoO{sub 4} For The Immobilization Of Mo-Rich Nuclear Waste

    SciTech Connect (OSTI)

    Brinkman, Kyle [Savannah River Site (SRS), Aiken, SC (United States); Marra, James [Savannah River Site (SRS), Aiken, SC (United States); Fox, Kevin [Savannah River Site (SRS), Aiken, SC (United States); Reppert, Jason [Savannah River Site (SRS), Aiken, SC (United States); Crum, Jarrod [Paci fic Northwest National Laboratory , Richland, WA (United States); Tang, Ming [Los Alamos National Laboratory , Los Alamos, NM (United States)

    2012-09-17T23:59:59.000Z

    Crystalline and glass composite materials are currently being investigated for the immobilization of combined High Level Waste (HLW) streams resulting from potential commercial fuel reprocessing scenarios. Several of these potential waste streams contain elevated levels of transition metal elements such as molybdenum (Mo). Molybdenum has limited solubility in typical silicate glasses used for nuclear waste immobilization. Under certain chemical and controlled cooling conditions, a powellite (Ba,Ca)MoO{sub 4} crystalline structure can be formed by reaction with alkaline earth elements. In this study, single phase BaMoO{sub 4} and CaMoO{sub 4} were formed from carbonate and oxide precursors demonstrating the viability of Mo incorporation into glass, crystalline or glass composite materials by a melt and crystallization process. X-ray diffraction, photoluminescence, and Raman spectroscopy indicated a long range ordered crystalline structure. In-situ electron irradiation studies indicated that both CaMoO{sub 4} and BaMoO{sub 4} powellite phases exhibit radiation stability up to 1000 years at anticipated doses with a crystalline to amorphous transition observed after 1 X 10{sup 13} Gy. Aqueous durability determined from product consistency tests (PCT) showed low normalized release rates for Ba, Ca, and Mo (<0.05 g/m{sup 2}).

  12. An APFIM and TEM study of Ni{sub 4}Mo precipitation in a commercial Ni-28% Mo-1.4% Fe-0.4% Cr wt. % alloy

    SciTech Connect (OSTI)

    Thomson, R.C.; Brown, N.; Bates, J.S. [Loughborough Univ. (United Kingdom). Inst. of Polymer Technology and Materials Engineering; Russell, K.F.; Miller, M.K. [Oak Ridge National Lab., TN (United States). Metals and Ceramics Div.

    1998-02-01T23:59:59.000Z

    Ni-Mo alloys containing at least 26 wt.% Mo have a negligible corrosion rate in boiling 10% hydrochloric acid and are therefore used in corrosive environments. A series of commercial Ni-Mo alloys has been developed with subtle variations in chemical composition. These alloys usually contain {approximately} 28 wt.% Mo with additions of up to 5% Fe and Cr. A significant amount of research has been performed to understand the microstructure and properties of these alloys, although most of the effort has concentrated on the Ni-Mo binary system. In some alloys with low Fe and Cr contents, a severe embrittlement problem has been observed due to the formation of the Ni{sub 4}Mo (D1{sub a}-ordered) phase within the microstructure. This research focuses on a commercial alloy with nominal composition Ni-28% Mo-1.4% Fe-0.4% Cr-0.1% Mn-0.003 wt.% C. The material supplied was a heat treatment coupon which had been attached to a large vessel during fabrication. Assessment of the chemical analysis of the alloy suggested that detrimental phases could be present or might appear during subsequent repair work. Therefore, it was important to assess the microstructural condition of the vessel, and in particular the kinetics of precipitation of Ni{sub 4}Mo.

  13. High-performance MoS{sub 2} transistors with low-resistance molybdenum contacts

    SciTech Connect (OSTI)

    Kang, Jiahao; Liu, Wei; Banerjee, Kaustav, E-mail: kaustav@ece.ucsb.edu [Department of Electrical and Computer Engineering, University of California, Santa Barbara, California 93106 (United States)

    2014-03-03T23:59:59.000Z

    In this Letter, molybdenum (Mo) is introduced and evaluated as an alternative contact metal to atomically-thin molybdenum disulphide (MoS{sub 2}), and high-performance field-effect transistors are experimentally demonstrated. In order to understand the physical nature of the interface and highlight the role of the various factors contributing to the Mo-MoS{sub 2} contacts, density functional theory (DFT) simulations are employed, which reveal that Mo can form high quality contact interface with monolayer MoS{sub 2} with zero tunnel barrier and zero Schottky barrier under source/drain contact, as well as an ultra-low Schottky barrier (0.1?eV) at source/drain-channel junction due to strong Fermi level pinning. In agreement with the DFT simulations, high mobility, high ON-current, and low contact resistance are experimentally demonstrated on both monolayer and multilayer MoS{sub 2} transistors using Mo contacts. The results obtained not only reveal the advantages of using Mo as a contact metal for MoS{sub 2} but also highlight the fact that the properties of contacts with 2-dimensional materials cannot be intuitively predicted by solely considering work function values and Schottky theory.

  14. Ion acceleration in Ar-Xe and Ar-He plasmas. I. Electron energy distribution functions and ion composition

    SciTech Connect (OSTI)

    Biloiu, Ioana A.; Scime, Earl E. [Department of Physics, West Virginia University, Morganton, West Virginia 26506 (United States)

    2010-11-15T23:59:59.000Z

    Electron energy distribution functions (eedf), ion production, and ion composition are studied in Ar-Xe and Ar-He expanding helicon plasmas. It was found that under the conditions of constant total flow rate, Xe, in addition to Ar, changes the eedf from Maxwellian-like to Druyvesteyn-like with a shortening of the high energy tail at {approx}15 eV. The electron temperature exponentially decreases from {approx}7 eV in pure Ar plasma to {approx}4 eV in pure Xe plasma. Xenon ions dominate the ion population for Xe filling fractions greater than 10%. The plasma density increases by {approx}15% with increasing Xe fraction. For an Ar-He plasma, increasing the helium fraction increases the electron temperature from {approx}7 eV in pure Ar plasma to {approx}14 eV for a He filling fraction of 80%. The plasma density drops by more than three orders of magnitude from 1.14x10{sup 11} cm{sup -3} to 6.5x10{sup 7} cm{sup -3}. However, the inferred ion densities indicate that even at a helium fraction of 80%, argon ions significantly outnumber helium ions.

  15. Trubarovi imaginarni ?itatelji: problem autorske knjine posvete u protestantskoj literaturi 16. stolje?a

    E-Print Network [OSTI]

    ?uri?, Aleksandra

    2011-01-01T23:59:59.000Z

    . Egidio IVETIC, Drago Roksandi?. Padova. Josip BRATULI?, 1992: Glagoljatvo i protestantizam. Radovi zavoda za slavensku filologiju. Zagreb. Josip BRATULI?, 2000: Hrvatski protestantski pisci. Vinkovci. Franjo BU?AR, 1904: Prilozi protestantizmu u...

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

    SciTech Connect (OSTI)

    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

    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.

  17. Postcollisional decay in Ne multiple ionization by H{sub 2}{sup +} ions in breakup collisions

    SciTech Connect (OSTI)

    Sant'Anna, M.M. [Instituto de Fisica, Universidade Federal do Rio de Janeiro, Caixa Postal 68528, Rio de Janeiro 21941-972 (Brazil); Luna, H.; Cavalcanti, E.G.; Sigaud, G. M.; Montenegro, E. C. [Departamento de Fisica, Pontificia Universidade Catolica do Rio de Janeiro, Caixa Postal 38071, Rio de Janeiro 22452-970 (Brazil); Santos, A.C.F. [Department of Physics, University of Missouri-Rolla, Rolla, Missouri 65401 (United States); McGrath, C.; Shah, M.B. [Department of Pure and Applied Physics, The Queen's University of Belfast, Belfast BT7 1NN, Northern Ireland (United Kingdom)

    2003-10-01T23:59:59.000Z

    We measured the Ne{sup q+} charge-state yield distribution for Ne atoms multiply ionized by 1-MeV/amu H{sub 2}{sup +}, in coincidence with the final state of the projectile, for both breakup and nonbreakup channels. Measurements with 1-MeV H{sup +} projectiles were also performed. While the H{sub 2}{sup +} nonbreakup channel produces results similar to equal-velocity proton or electron projectiles, the breakup channels lead to a charge-state yield distribution very close to the known Ne 2s{sup -1} postcollisional decay distribution, measured through photoionization [T. A. Carlson, W. E. Hunt, and M. O. Krause, Phys. Rev. 151, 41 (1966)]. This behavior suggests that, in the breakup channels, contributions to multiple ionization from mechanisms that are usually considered to be dominant in ion-atom collisions are less important than the postcollisional decay.

  18. MCViNE -- An object oriented Monte Carlo neutron ray tracing simulation package

    E-Print Network [OSTI]

    Lin, Jiao Y Y; Granroth, Garrett E; Abernathy, Douglas L; Lumsden, Mark D; Winn, Barry; Aczel, Adam A; Aivazis, Michael; Fultz, Brent

    2015-01-01T23:59:59.000Z

    MCViNE (Monte-Carlo VIrtual Neutron Experiment) is a versatile Monte Carlo (MC) neutron ray-tracing program that provides researchers with tools for performing computer modeling and simulations that mirror real neutron scattering experiments. By adopting modern software engineering practices such as using composite and visitor design patterns for representing and accessing neutron scatterers, and using recursive algorithms for multiple scattering, MCViNE is flexible enough to handle sophisticated neutron scattering problems including, for example, neutron detection by complex detector systems, and single and multiple scattering events in a variety of samples and sample environments. In addition, MCViNE can take advantage of simulation components in linear-chain-based MC ray tracing packages widely used in instrument design and optimization, as well as NumPy-based components that make prototypes useful and easy to develop. These developments have enabled us to carry out detailed simulations of neutron scatteri...

  19. Characterization of fragment emission in ^{20}Ne (7 - 10 MeV/nucleon) + ^{12}C reactions

    E-Print Network [OSTI]

    Aparajita Dey; C. Bhattacharya; S. Bhattacharya; S. Kundu; K. Banerjee; S. Mukhopadhyay; D. Gupta; T. Bhattacharjee; S. R. Banerjee; S. Bhattacharyya; T. K. Rana; S. K. Basu; R. Saha; K. Krishan; A. Mukherjee; D. Bandopadhyay; C. Beck

    2007-07-23T23:59:59.000Z

    The inclusive energy distributions of the complex fragments (3 $\\leq$ Z $\\leq$ 7) emitted from the bombardment of ^{12}C by ^{20}Ne beams with incident energies between 145 and 200 MeV have been measured in the angular range 10$^{o} \\leq \\theta_{lab} \\leq$ 50^{o}. Damped fragment yields in all the cases have been found to be the characteristic of emission from fully energy equilibrated composites. The binary fragment yields are compared with the standard statistical model predictions. Enhanced yields of entrance channel fragments (5 $\\leq$ Z $\\leq$ 7) indicate the survival of orbiting-like process in ^{20}Ne + ^{12}C system at these energies.

  20. Spectroscopy and intruder configurations of $^{33}$Mg and $^{31}$Ne studied with antisymmetrized molecular dynamics

    E-Print Network [OSTI]

    M. Kimura

    2011-05-17T23:59:59.000Z

    Excitation spectra and neutron single particle configurations of $^{33}$Mg and $^{31}$Ne are investigated by using antisymmetrized molecular dynamics combined with generator coordinate method. It is shown that both nuclei have strongly deformed $3/2^-$ ground state with a $3p2h$ configuration. The excitation spectra are qualitatively understood in terms of the Nilsson model and the calculation has shown the coexistence of different intruder configurations within small excitation energy. The calculated one neutron separation energy of $^{31}$Ne is rather small ($S_n=250$ keV) and implies a p-wave one neutron halo with a strongly deformed core.

  1. Proton-proton correlations observed in two-proton decay of $^{19}$Mg and $^{16}$Ne

    E-Print Network [OSTI]

    I. Mukha; L. Grigorenko; K. Summerer; L. Acosta; M. A. G. Alvarez; E. Casarejos; A. Chatillon; D. Cortina-Gil; J. Espino; A. Fomichev; J. E. Garcia-Ramos; H. Geissel; J. Gomez-Camacho; J. Hofmann; O. Kiselev; A. Korsheninnikov; N. Kurz; Yu. Litvinov; I. Martel; C. Nociforo; W. Ott; M. Pfutzner; C. Rodriguez-Tajes; E. Roeckl; M. Stanoiu; H. Weick; P. J. Woods

    2008-02-28T23:59:59.000Z

    Proton-proton correlations were observed for the two-proton decays of the ground states of $^{19}$Mg and $^{16}$Ne. The trajectories of the respective decay products, $^{17}$Ne+p+p and $^{14}$O+p+p, were measured by using a tracking technique with microstrip detectors. These data were used to reconstruct the angular correlations of fragments projected on planes transverse to the precursor momenta. The measured three-particle correlations reflect a genuine three-body decay mechanism and allowed us to obtain spectroscopic information on the precursors with valence protons in the $sd$ shell.

  2. MiniBooNE as related to Windows on the Universe

    SciTech Connect (OSTI)

    Stefanski, Ray; /Fermilab

    2009-12-01T23:59:59.000Z

    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.

  3. Experimental activities supporting commercial U.S. accelerator production of 99-Mo

    SciTech Connect (OSTI)

    Dale, Gregory E [Los Alamos National Laboratory; Chemerisov, Sergey D [ANL; Vandegrift, George F [ANL

    2010-01-01T23:59:59.000Z

    {sup 99m}Tc, the daughter product of {sup 99}Mo, is the most commonly used radioisotope for nuclear medicine in the U.S. Experiments are being performed at Los Alamos National Laboratory and Argonne National Laboratory to demonstrate production of {sup 99}Mo using accelerators. The {sup 100}Mo({gamma},n){sup 99}Mo reaction in an enriched {sup 100}Mo target is currently under investigation. Three scaled low-power production experiments using a 20-MeV electron linac at Argonne have been performed to date. Two of these experiments used natural Mo targets and produced a total of 613 {mu}C of {sup 99}Mo. The third experiment used an enriched {sup 100}Mo target and produced 10.5 mCi of {sup 99}Mo. Following irradiation the targets were dissolved and the low specific activity solution was processed through an ARSII generator from NorthStar Medical Radioisotopes. Yields of {sup 99m}Tc >95% have been observed.

  4. Conceptual design of a new homogeneous reactor for medical radioisotope Mo-99/Tc-99m production

    SciTech Connect (OSTI)

    Liem, Peng Hong [Nippon Advanced Information Service (NAIS Co., Inc.) Scientific Computational Division, 416 Muramatsu, Tokaimura, Ibaraki (Japan); Tran, Hoai Nam [Chalmers University of Technology, Dept. of Applied Physics, Div. of Nuclear Engineering, SE-412 96 Gothenburg (Sweden); Sembiring, Tagor Malem [National Nuclear Energy Agency (BATAN), Center for Reactor Technology and Nuclear Safety, Kawasan Puspiptek, Serpong, Tangerang Selatan, Banten (Indonesia); Arbie, Bakri [PT MOTAB Technology, Kedoya Elok Plaza Blok DA 12, Jl. Panjang, Kebun Jeruk, Jakarta Barat (Indonesia)

    2014-09-30T23:59:59.000Z

    To partly solve the global and regional shortages of Mo-99 supply, a conceptual design of a nitrate-fuel-solution based homogeneous reactor dedicated for Mo-99/Tc-99m medical radioisotope production is proposed. The modified LEU Cintichem process for Mo-99 extraction which has been licensed and demonstrated commercially for decades by BATAN is taken into account as a key design consideration. The design characteristics and main parameters are identified and the advantageous aspects are shown by comparing with the BATAN's existing Mo-99 supply chain which uses a heterogeneous reactor (RSG GAS multipurpose reactor)

  5. Greenfield Alternative Study LEU-Mo Fuel Fabrication Facility

    SciTech Connect (OSTI)

    Washington Division of URS

    2008-07-01T23:59:59.000Z

    This report provides the initial first look of the design of the Greenfield Alternative of the Fuel Fabrication Capability (FFC); a facility to be built at a Greenfield DOE National Laboratory site. The FFC is designed to fabricate LEU-Mo monolithic fuel for the 5 US High Performance Research Reactors (HPRRs). This report provides a pre-conceptual design of the site, facility, process and equipment systems of the FFC; along with a preliminary hazards evaluation, risk assessment as well as the ROM cost and schedule estimate.

  6. Phase transitions in the adsorption system Li/Mo(112)

    E-Print Network [OSTI]

    Fedorus, A.; Kolthoff, D.; Koval, V.; Lyuksyutov, Igor F.; Naumovets, AG; Pfnur, H.

    2000-01-01T23:59:59.000Z

    limit can be quasi-one-dimensional. Such model systems are formed upon submonolayer adsorption on surfaces with strongly an- PRB 620163-1829/2000/62~4!/2852~10!/$15.00 n system Li?Mo?112? ,1,3 A. G. Naumovets,1 and H. Pfnu?r2,* , Prospect Nauki 46... W/Re thermocouple and was con- trolled by a computerized feedback circuit with a resolution of 0.01 K. The source of lithium was constructed and outgassed as PRB 62 PHASE TRANSITIONS IN TH described in Ref. 6. The LEED patterns have been taken...

  7. Recovery of Mo/Si multilayer coated optical substrates

    DOE Patents [OSTI]

    Baker, Sherry L. (Pleasanton, CA); Vernon, Stephen P. (Pleasanton, CA); Stearns, Daniel G. (Los Altos, CA)

    1997-12-16T23:59:59.000Z

    Mo/Si multilayers are removed from superpolished ZERODUR and fused silica substrates with a dry etching process that, under suitable processing conditions, produces negligible change in either the substrate surface figure or surface roughness. The two step dry etching process removes SiO.sub.2 overlayer with a fluroine-containing gas and then moves molybdenum and silicon multilayers with a chlorine-containing gas. Full recovery of the initial normal incidence extreme ultra-violet (EUV) reflectance response has been demonstrated on reprocessed substrates.

  8. Recovery of Mo/Si multilayer coated optical substrates

    DOE Patents [OSTI]

    Baker, S.L.; Vernon, S.P.; Stearns, D.G.

    1997-12-16T23:59:59.000Z

    Mo/Si multilayers are removed from superpolished ZERODUR and fused silica substrates with a dry etching process that, under suitable processing conditions, produces negligible change in either the substrate surface figure or surface roughness. The two step dry etching process removes SiO{sub 2} overlayer with a fluroine-containing gas and then moves molybdenum and silicon multilayers with a chlorine-containing gas. Full recovery of the initial normal incidence extreme ultra-violet (EUV) reflectance response has been demonstrated on reprocessed substrates. 5 figs.

  9. DOE - Office of Legacy Management -- Petrolite Corp - MO 08

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTableSelling Corp - CTOregonPetrolite Corp - MO 08 FUSRAP

  10. Identification of single nucleotides in MoS2 nanopores

    E-Print Network [OSTI]

    Jiandong Feng; Ke Liu; Roman D. Bulushev; Sergey Khlybov; Dumitru Dumcenco; Andras Kis; Aleksandra Radenovic

    2015-05-07T23:59:59.000Z

    Ultrathin membranes have drawn much attention due to their unprecedented spatial resolution for DNA nanopore sequencing. However, the high translocation velocity (3000-50000 nt/ms) of DNA molecules moving across such membranes limits their usability. To this end, we have introduced a viscosity gradient system based on room-temperature ionic liquids (RTILs) to control the dynamics of DNA translocation through a nanometer-size pore fabricated in an atomically thin MoS2 membrane. This allows us for the first time to statistically identify all four types of nucleotides with solid state nanopores. Nucleotides are identified according to the current signatures recorded during their transient residence in the narrow orifice of the atomically thin MoS2 nanopore. In this novel architecture that exploits high viscosity of RTIL, we demonstrate single-nucleotide translocation velocity that is an optimal speed (1-50 nt/ms) for DNA sequencing, while keeping the signal to noise ratio (SNR) higher than 10. Our findings pave the way for future low-cost and rapid DNA sequencing using solid-state nanopores.

  11. Characterization of U-Mo Foils for AFIP-7

    SciTech Connect (OSTI)

    Edwards, Danny J.; Ermi, Ruby M.; Schemer-Kohrn, Alan L.; Overman, Nicole R.; Henager, Charles H.; Burkes, Douglas; Senor, David J.

    2012-11-07T23:59:59.000Z

    Twelve AFIP in-process foil samples, fabricated by either Y-12 or LANL, were shipped from LANL to PNNL for potential characterization using optical and scanning electron microscopy techniques. Of these twelve, nine different conditions were examined to one degree or another using both techniques. For this report a complete description of the results are provided for one archive foil from each source of material, and one unirradiated piece of a foil of each source that was irradiated in the Advanced Test Reactor. Additional data from two other LANL conditions are summarized in very brief form in an appendix. The characterization revealed that all four characterized conditions contained a cold worked microstructure to different degrees. The Y-12 foils exhibited a higher degree of cold working compared to the LANL foils, as evidenced by the highly elongated and obscure U-Mo grain structure present in each foil. The longitudinal orientations for both of the Y-12 foils possesses a highly laminar appearance with such a distorted grain structure that it was very difficult to even offer a range of grain sizes. The U-Mo grain structure of the LANL foils, by comparison, consisted of a more easily discernible grain structure with a mix of equiaxed and elongated grains. Both materials have an inhomogenous grain structure in that all of the characterized foils possess abnormally coarse grains.

  12. Supercapacitor behavior of ?-MnMoO{sub 4} nanorods on different electrolytes

    SciTech Connect (OSTI)

    Purushothaman, K.K., E-mail: purushoth_gri@yahoo.co.in [Department of Physics, TRP Engineering College (SRM Group), Irungalur, Trichy, Tamilnadu (India); Cuba, M. [Department of Physics, Gandhigram Rural Institute Deemed University, Gandhigram, Tamilnadu (India)] [Department of Physics, Gandhigram Rural Institute Deemed University, Gandhigram, Tamilnadu (India); Muralidharan, G., E-mail: muralg@rediffmail.com [Department of Physics, Gandhigram Rural Institute Deemed University, Gandhigram, Tamilnadu (India)

    2012-11-15T23:59:59.000Z

    Graphical abstract: SEM image of ?-MnMoO{sub 4} nanorods on FTO substrate. Highlights: ? Synthesis of ?-MnMoO{sub 4} nanorods by spin coating method. ? First study on the effect of electrolyte on the pseudocapacitance behavior. ? ?-MnMoO{sub 4} nanorods exhibit maximum specific capacitance of 998 F/g. ? At higher scan rates p-TSA electrolyte exhibits superior capacitive behavior. -- Abstract: ?-MnMoO{sub 4} nanorods were prepared on conducting glass substrate via solgel spin coating method at the optimum doping level. The effect of electrolyte on the pseudocapacitance behavior of the ?-MnMoO{sub 4} nanorods was studied using para toluene sulfonic acid (p-TSA), sulfuric acid (H{sub 2}SO{sub 4}) and hydrochloric acid (HCl) as electrolytes. X-ray diffraction analysis reveals the formation of ?-MnMoO{sub 4} in monoclinic phase. FTIR spectra contain vibrational bands associated with Mo=O, MO and MoOMo bonds. SEM image reveals the formation of nanorods. Supercapacitor behavior has been studied using cyclic voltammetry (CV) analysis. ?-MnMoO{sub 4} nanorods exhibit maximum specific capacitance of 998 F/g at a scan rate of 5 mV/s in H{sub 2}SO{sub 4} electrolyte while a specific capacitance of 784 F/g and 530 F/g have been obtained using p-TSA and HCl electrolytes, respectively. At higher scan rates p-TSA electrolyte exhibits superior capacitive behavior than H{sub 2}SO{sub 4}.

  13. MicroBooNE, A Liquid Argon Time Projection Chamber (LArTPC) Neutrino Experiment

    SciTech Connect (OSTI)

    Katori, Teppei

    2011-07-01T23:59:59.000Z

    Liquid Argon time projection chamber (LArTPC) is a promising detector technology for future neutrino experiments. MicroBooNE is a upcoming LArTPC neutrino experiment which will be located on-axis of Booster Neutrino Beam (BNB) at Fermilab, USA. The R&D efforts on this detection method and related neutrino interaction measurements are discussed.

  14. N.E. Leonard U. Pisa 18-20 April 2007Slide 1 Cooperative Control

    E-Print Network [OSTI]

    Leonard, Naomi

    1 N.E. Leonard ­ U. Pisa ­ 18-20 April 2007Slide 1 Cooperative Control and Mobile Sensor Networks Cooperative Control, Part II Naomi Ehrich Leonard Mechanical and Aerospace Engineering Princeton University.E. Leonard ­ U. Pisa ­ 18-20 April 2007Slide 2 Collective Motion Stabilization Problem · Achieve synchrony

  15. Magnetostratigraphy and small mammals of the Late Oligocene Banovii basin in NE Bosnia and Herzegovina

    E-Print Network [OSTI]

    Utrecht, Universiteit

    Magnetostratigraphy and small mammals of the Late Oligocene Banovii basin in NE Bosnia Rudnici mrkog uglja Banovii d.d., Branilaca Banovia 36, 71290 Banovii, Bosnia and Herzegovina a b s t r in Bosnia and Herzegovina. Although the Dinarides occupy a crucial paleogeographic position bridging Central

  16. Living Longer on Less THe neW economic (in)securiTy of seniors

    E-Print Network [OSTI]

    Snider, Barry B.

    Living Longer on Less THe neW economic (in)securiTy of seniors INSTITUTE ON ASSETS & SOCIAL POLICY to measuring economic security applied in this report builds on previous work on middle class economic security for Social Policy and Manage- ment at Brandeis University, is dedicated to the economic well-being and social

  17. COLUMBIA RIVER INTER-TRIBAL FISH COMMISSION 700 NE Multnomah Street, Suite 1200

    E-Print Network [OSTI]

    COLUMBIA RIVER INTER-TRIBAL FISH COMMISSION 700 NE Multnomah Street, Suite 1200 Portland, Oregon 97232 F (503) 235-4228 (503) 238-0667 F (503) 235-4228 www.critfc.org Putting fish back in the rivers and protecting the watersheds where fish live September 17, 2013 Bill Bradbury, Chairman Northwest Power

  18. Astronomical forcing of sedimentary cycles in the middle to late Miocene continental Calatayud Basin (NE Spain)

    E-Print Network [OSTI]

    Utrecht, Universiteit

    Basin (NE Spain) H. Abdul Aziz aY *, F. Hilgen a , W. Krijgsman b , E. Sanz c , J.P. Calvo d, Spain d Departemento de Petrologia y Geoqu|¨mica, Fac. CC. Geolo¨gicas, Universidad Complutense, 28040 Madrid, Spain Received 16 August 1999; received in revised form 28 January 2000; accepted 29 January 2000

  19. Come to Norway Experience the World JuNE 20-July 31

    E-Print Network [OSTI]

    Johansen, Tom Henning

    Come to Norway ­ Experience the World 2015 JuNE 20-July 31 #12;An Academic Experience The ISS of Bergen and the fjords of Western Norway. Studying and living with fellow students from all over the world School PO Box 1082 Blindern NO 0317 Oslo Norway uio.no/summerschool Tel: +47 22 85 63 85 iss

  20. Oil and Gas CDT Cenomanian-Turonian Palaeoenvironments of NE Brazil

    E-Print Network [OSTI]

    Henderson, Gideon

    Oil and Gas CDT Cenomanian-Turonian Palaeoenvironments of NE Brazil Margin University of Birmingham, biostratigraphy, Brazil, Cretaceous Overview The Late Cretaceous stratigraphy of the Equatorial margin of North East Brazil holds a unique record of the final stages of the opening of the South Atlantic. During

  1. U ne rapide recension bibliographique sur la Tunisie et le Maroc laisse

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    U ne rapide recension bibliographique sur la Tunisie et le Maroc laisse apparaître que tradition et. La France moderne serait là au secours d'une Tunisie et d'un Maroc traditionnels incapables de s) affirme par exemple qu'au Maroc, 1. Nombreux sont les auteurs qui convoquent l'une ou l'autre dans le

  2. The LSND puzzle in the light of MiniBooNE results

    E-Print Network [OSTI]

    Thomas Schwetz

    2008-05-15T23:59:59.000Z

    I give a brief overview over various attempts to reconcile the LSND evidence for oscillations with all other global neutrino data, including the results from MiniBooNE. I discuss the status of oscillation schemes with one or more sterile neutrinos and comment on various exotic proposals.

  3. Searches for new physics at MiniBooNE : sterile neutrinos and mixing freedom

    E-Print Network [OSTI]

    Karagiorgi, Georgia S. (Georgia Stelios)

    2010-01-01T23:59:59.000Z

    The MiniBooNE experiment was designed to perform a search for Vu --> Ve oscillations in a region of A[delta]sin 2 20very different from that allowed by standard, three neutrino oscillations, as determined by solar and ...

  4. Thermodynamics and equilibrium structure of Ne38 cluster: Quantum mechanics versus classical

    E-Print Network [OSTI]

    Mandelshtam, Vladimir A.

    . For example, although the heat capacity Cv T around the "solid-liquid" transition temperature T 10 K MC simulations are implemented in the parallel tempering framework. The classical heat capacity Cv do not play an essential role in the thermodynamics of Ne38, the quantum heat capacity

  5. Search for core-collapse supernovae using the MiniBooNE neutrino detector

    E-Print Network [OSTI]

    Karagiorgi, Georgia Stelios

    We present a search for core-collapse supernovae in the Milky Way galaxy, using the MiniBooNE neutrino detector. No evidence is found for core-collapse supernovae occurring in our Galaxy in the period from December 14, ...

  6. 36 SEPTEMBER | 2012 WiNd TURbiNE CAPACiTY

    E-Print Network [OSTI]

    Kusiak, Andrew

    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

  7. Smartphone-Mediated Tourist Experiences: Understanding the Influence of Augmented Reality (AR) Applications in Tourism

    E-Print Network [OSTI]

    Anuar, Faiz Izwan

    2013-04-25T23:59:59.000Z

    The synergy of smartphone, mobile applications (apps) and Augmented Reality (AR) technology has the potential to mediate tourism experiences to great extents. The advent of AR apps on smartphones provides a dynamic solution for tourists by helping...

  8. Thermal History of the Felsite Unit, Geysers Geothermal Field, From Thermal Modeling of 40Ar/39Ar Incremental Heating Data

    SciTech Connect (OSTI)

    T. M. Harrison (U of California); G. B. Dalrymple (Oregon State U); J. B. Hulen (U of Utah); M. A. Lanphere; M. Grove; O. M. Lovera

    1999-08-19T23:59:59.000Z

    An Ar-40/Ar-39 and U-Pb study was performed of the Geysers plutonic complex of the Geysers Geothermal Field in California. Sixty-nine ion microprobe spot analyses of zircons from four granite samples from the plutonic complex that underlies the Geysers geothermal field yielded Pb-207/Pb-206 vs. U-238/Pb-206 concordia ages ranging from 1.13 {+-} 0.04 Ma to 1.25 {+-} 0.04 Ma. The U-Pb ages coincide closely with Ar-40/Ar-39 age spectrum plateau and ''terminal'' ages from coexisting K-feldspars and with the eruption ages of overlying volcanic rocks. The data indicate that the granite crystallized at 1.18 Ma and had cooled below 350 C by {approximately}0.9-1.0 Ma. Interpretation of the feldspar Ar-40/Ar-39 age data using multi-diffusion domain theory indicates that post-emplacement rapid cooling was succeeded either by slower cooling from 350-300 C between 1.0 and 0.4 Ma or transitory reheating to 300-350 C at about 0.4-0.6 Ma. Heat flow calculations constrained with K-feldspar thermal histories and the pre sent elevated regional heal flow anomaly demonstrate that appreciable heat input from sources external to the known Geysers plutonic complex is required to maintain the geothermal system. This requirement is satisfied by either a large, underlying, convecting magma chamber (now solidified) emplaced at 1.2 Ma or episodic intrusion of smaller bodies from 1.2-0.6 Ma.

  9. Fe3O4-LiMo3Se3 Nanoparticle Clusters as Superparamagnetic Nanocompasses

    E-Print Network [OSTI]

    Osterloh, Frank

    -iodopropionic acid treated LiMo3Se3 nanowire bundles with oleic acid-stabilized Fe3O4 nanoparticles of 2.8, 5Fe3O4-LiMo3Se3 Nanoparticle Clusters as Superparamagnetic Nanocompasses Frank E. Osterloh,*, Hiroki A scaleable chemical approach to functional nanoscale analogues of the magnetic compasses in magnetotactic

  10. Hole Selective MoOx Contact for Silicon Solar Cells Corsin Battaglia,,,

    E-Print Network [OSTI]

    Javey, Ali

    Hole Selective MoOx Contact for Silicon Solar Cells Corsin Battaglia,,, Xingtian Yin,,,, Maxwell Laboratory, Xi'an Jiaotong University, Xi'an, 710049 Shaanxi, People's Republic of China Joint Center/silicon solar cell with a power conversion efficiency of 14.3%. While MoOx is commonly considered

  11. MoIAC Pre-Audit Form Ways to submit this form

    E-Print Network [OSTI]

    Noble, James S.

    information: #12;MoIAC Pre-Audit Form Major Energy Consuming Equipment: Please provide informationMoIAC Pre-Audit Form Ways to submit this form: 1. Fill up the form and fax it to 573-882-2693 Attn: Dr. Bin Wu 2. Print and return this form by mail to: Dr. Bin Wu University of Missouri

  12. Adsorption studies of Mo and V onto ferrihydrite *, L. G. BENNING

    E-Print Network [OSTI]

    Benning, Liane G.

    Adsorption studies of Mo and V onto ferrihydrite L. BRINZA 1, *, L. G. BENNING 1 AND P. J. STATHAM-sorbate experiments, 100% adsorption was observed at pH values below 6 and 8, respectively. Above the point of zero charge (PZC = 7.97) of FHY, the adsorption efficiency for Mo dropped dramatically (20% at pH 8) while V

  13. Stability of Graphene doping with MoO_3 and I_2

    E-Print Network [OSTI]

    DArsi, Lorenzo; Esconjauregui, Santiago; Weatherup, Robert; Guo, Yuzheng; Bhardwaj, Sunil; Centeno, Alba; Zurutuza, Amaia; Cepek, Cinzia; Robertson, John

    2014-09-08T23:59:59.000Z

    We dope graphene by evaporation of MoO_3 or by solution-deposition of I_2 and assess the doping stability for its use as transparent electrodes. Electrical measurements show that both dopants increase the graphene sheet conductivity and find that Mo...

  14. Student Financial Aid 11 Jesse Hall University of Missouri Columbia Columbia, MO 65211-1600

    E-Print Network [OSTI]

    Taylor, Jerry

    Student Financial Aid 11 Jesse Hall University of Missouri ­ Columbia Columbia, MO 65211-1600 PHONE;Student Financial Aid 11 Jesse Hall University of Missouri ­ Columbia Columbia, MO 65211-1600 PHONE (573 ________________________________________________________________________________________________________________________ Name of Host Institution (College or University you will be attending or taking additional classes

  15. Ligand Conjugation of Chemically Exfoliated MoS2 Stanley S. Chou,+

    E-Print Network [OSTI]

    Huang, Jiaxing

    Ligand Conjugation of Chemically Exfoliated MoS2 Stanley S. Chou,+ Mrinmoy De,+ Jaemyung Kim,+ Segi and chemical properties. Here, we demonstrate ligand conjugation of chemically exfoliated MoS2 using thiol-nitrilotriacetic acid chelation.13 However, colloidal sur- face modification of water dispersible, chemically exfoliated

  16. Characterization of Single-Walled Carbon Nanotubes (SWNTs) Produced by CO Disproportionation on Co-Mo

    E-Print Network [OSTI]

    Resasco, Daniel

    Characterization of Single-Walled Carbon Nanotubes (SWNTs) Produced by CO Disproportionation on Co Received November 15, 2001. Revised Manuscript Received February 6, 2002 The disproportionation of CO over Co-Mo/SiO2 catalysts with low Co/Mo ratios results in a high selectivity to single-walled carbon

  17. Corrosion Behavior of Solution-Annealed CoCrMo Medical Implant

    E-Print Network [OSTI]

    Shull, Kenneth R.

    ! ! ! Corrosion Behavior of Solution- Annealed CoCrMo Medical Implant Alloys Pooja Panigrahi University June 6, 2011 #12;! ! ""! Corrosion Behavior of Solution-Annealed CoCrMo Medical Implant Alloys and Applied Sciences Northwestern University June 6, 2011 Abstract Corrosion behavior of solution annealed

  18. Double beta decays and solar neutrinos with 100 MOON(Mo Observatory Of Neutrinos)

    E-Print Network [OSTI]

    Washington at Seattle, University of

    nuclear laboratory for spectroscopic studies of neutrinos Neutrinos are key particles for new frontiers) are sensitive and realistic experiments for studying the Majorana nature of the neutrino and the absolute massDouble beta decays and solar neutrinos with 100 Mo MOON(Mo Observatory Of Neutrinos) May 24, 2005

  19. Posting type Advisory Subject Shifts in Mo-anode XRF element calibration factors

    E-Print Network [OSTI]

    Fischer, Emily V.

    Posting type Advisory Subject Shifts in Mo-anode XRF element calibration factors Module/Species A@crocker.ucdavis.edu Supporting information A molybdenum-anode XRF instrument is used to analyze the heavier elements (Ni, Cu, Zn with lighter deposits were acquired and used in the Mo-anode XRF system. The new calibration foils resulted

  20. The arXiv: 14 years of open access scientific communication Simeon Warner

    E-Print Network [OSTI]

    Warner, Simeon

    /09/14 20:22:09 Abstract The arXiv was started in 1991 as a way for high-energy physicists to share publishing. Lessons learned from this development include the importance of community and critical mass how journal publishers have reacted to the arXiv, and ask what the arXiv reveals about the established

  1. Le magn)sme ar)ficiel pour les gaz d'atomes froids Jean Dalibard

    E-Print Network [OSTI]

    Dalibard, Jean

    Le magné)sme ar)ficiel pour les gaz d'atomes froids Jean Dalibard Année 2013-14 Chaire Atomes et rayonnement Magné8sme ar8ficiel pour un atome isolé poten8el vecteur et la simula8on du magné8sme orbital A(r) V

  2. arXiv:physics/001003915Oct2000 Maximally Informative Statistics

    E-Print Network [OSTI]

    George, Edward I.

    arXiv:physics/001003915Oct2000 Maximally Informative Statistics Maximally Informative Statistics: egeorge@mail.utexas.edu Revision history: April 1996. Presented Bayesian Statistics 6, Valencia, 1998 of sufficiency, relevance, and representation. Maximally informative statistics are shown to minimize a Kullback

  3. arXiv:physics/0010039 Maximally Informative Statistics

    E-Print Network [OSTI]

    Wolf,David R.

    arXiv:physics/0010039 v1 15 Oct 2000 Maximally Informative Statistics Maximally Informative Statistics David R. Wolf PO 8308, Austin, TX 78713-8308, USA, E-mail: drwolf@realtime.net Dr. Wolf: egeorge@mail.utexas.edu Revision history: April 1996. Presented Bayesian Statistics 6, Valencia, 1998

  4. ARS Agricultural Research Service (USDA) BIA Bureau of Indian Affairs

    E-Print Network [OSTI]

    ACRONYMS ARS Agricultural Research Service (USDA) BIA Bureau of Indian Affairs BLM Bureau of Land Wetlands Inventory ODA Oregon Department of Agriculture ODEQ Oregon Department of Environmental Quality ODF Department of Agriculture USDI United States Department of the Interior USFS United States Forest Service

  5. Advanced Robotics 23 (2009) 13271358 www.brill.nl/ar

    E-Print Network [OSTI]

    Tachi, Susumu

    2009-01-01T23:59:59.000Z

    Advanced Robotics 23 (2009) 13271358 www.brill.nl/ar Full paper iSoRA: Humanoid Robot Arm on the development and control of the humanoid robot arm iSoRA, intended for operation in a dynamic unstructured that the proposed approach not only provides safe interaction of the robot arm with a person, but also improves

  6. Auger transition rates for Ar-like ions

    SciTech Connect (OSTI)

    Chung, Sang-Young [Physics Department, POSTECH, San 31 Hyojadong, Nam Ku, Pohang, Kyungbuk 790-784 (Korea, Republic of); Kagawa, Takashi [Department of Physics, Nara Women's University, Nara 630-8506 (Japan); Moribayashi, Kengo [Japan Atomic Energy Agency, 8-1, Umemidai, Kizu-cho, Kyoto 619-0215 (Japan); Kim, Dong Eon [Physics Department, POSTECH, San 31 Hyojadong, Nam Ku, Pohang, Kyungbuk 790-784 (Korea, Republic of)], E-mail: kimd@postech.ac.kr

    2009-03-15T23:59:59.000Z

    The Auger transition rates for Ar-like ions have been calculated by the relativistic configuration interaction code and flexible atomic code. The calculations have been carried out for the atomic numbers from 18 to 54, that is, for argon to xenon. The calculated data for argon is shown to be in a good agreement with experimental data and other calculated data.

  7. DESY 07176 arXiv:0710.2602v1

    E-Print Network [OSTI]

    ########### DESY 07­176 arXiv:0710.2602v1 [hep­ex] 13 Oct 2007 Prospects to Measure the Higgs Boson - Germany The process e + e ! ZH allows to measure the Higgs boson in the recoil mass spectrum against the Z boson without any assumptions on the Higgs boson decay. We performed a full simulation

  8. Photo-oxidation method using MoS2 nanocluster materials

    DOE Patents [OSTI]

    Wilcoxon, Jess P. (Albuquerque, NM)

    2001-01-01T23:59:59.000Z

    A method of photo-oxidizing a hydrocarbon compound is provided by dispersing MoS.sub.2 nanoclusters in a solvent containing a hydrocarbon compound contaminant to form a stable solution mixture and irradiating the mixture to photo-oxide the hydrocarbon compound. Hydrocarbon compounds of interest include aromatic hydrocarbon and chlorinated hydrocarbons. MoS.sub.2 nanoclusters with an average diameter less than approximately 10 nanometers are shown to be effective in decomposing potentially toxic aromatic and chlorinated hydrocarbons, such as phenol, pentachlorophenol, chlorinated biphenols, and chloroform, into relatively non-toxic compounds. The irradiation can occur by exposing the MoS.sub.2 nanoclusters and hydrocarbon compound mixture with visible light. The MoS.sub.2 nanoclusters can be introduced to the toxic hydrocarbons as either a MoS.sub.2 solution or deposited on a support material.

  9. Phase transformation of ZnMoO{sub 4} by localized thermal spike

    SciTech Connect (OSTI)

    Agarwal, D. C.; Avasthi, D. K.; Kabiraj, D. [Inter-University Accelerator Center, Aruna Asaf Ali Marg, New Delhi 110067 (India); Varma, S. [Institute of Physics, Sachivalaya Marg, Bhubaneswar 751005 (India); Kremer, Felipe; Ridgway, M. C. [Australian National University, Canberra ACT 0200 (Australia)

    2014-04-28T23:59:59.000Z

    We show that ZnMoO{sub 4} remains in stable phase under thermal annealing up to 1000?C, whereas it decomposes to ZnO and MoO{sub 3} under transient thermal spike induced by 100?MeV Ag irradiation. The transformation is evidenced by X-ray diffraction (XRD), Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS). Thin films of ZnMoO{sub 4} were synthesized by thermal evaporation and subsequent annealing in oxygen ambient at 600?C for 4?h. XRD results show that as the irradiation fluence increases, the peak related to ZnMoO{sub 4} decreases gradually and eventually disappear, whereas peaks related to ZnO grow steadily up to fluence of 3??10{sup 12} ions/cm{sup 2} and thereafter remain stable till highest fluence. This indicates that polycrystalline ZnMoO{sub 4} film has transformed to polycrystalline ZnO thin film. The Raman lines related to ZnMoO{sub 4} are observed to have disappeared with increasing irradiation fluence. XPS results show modification in bonding and depletion of Mo from near surface region after the ion irradiation. Cross-sectional transmission electron microscopy result shows the formation of ion track of diameter 1216?nm. These results demonstrate that ion beam methods provide the means to control phase splitting of ZnMoO{sub 4} to ZnO and MoO{sub 3} within nanometric dimension along the ion track. The observation of phase splitting and Mo loss are explained in the framework of ion beam induced thermal spike formalism.

  10. PI Research Organisation Project Title NE/J024678/1 Dr Christopher Davis University of Reading Driving space weather forecasts with real data

    E-Print Network [OSTI]

    University of Southampton NE/J021075/1 Where did all the CO2 go? Insights from boron isotopes in deep University of Leeds NE/J02371X/1 Did the Southern Ocean drive deglacial atmospheric CO2 rise?Dr Raja of Leeds NE/J023310/1 Spectrally High resolution Infrared measurements for the characterisation of Volcanic

  11. Water and Methanol Adsorption on MgO(100)/Mo(100) Studied by Electron Spectroscopies and Thermal Programmed Desorption

    E-Print Network [OSTI]

    Goodman, Wayne

    Water and Methanol Adsorption on MgO(100)/Mo(100) Studied by Electron Spectroscopies and Thermal, 2000 The adsorption of methanol (CH3OH) and water (D2O) on the MgO(100)/Mo(100) surface at 100 K has covered MgO(100)/Mo(100) surface. On the other hand, the formation of a methanol multilayer desorption

  12. Influence of Co/Mo Ratio on Synthesis of Single-Walled Carbon Nanotubes from Carbon Monoxide

    E-Print Network [OSTI]

    Maruyama, Shigeo

    Influence of Co/Mo Ratio on Synthesis of Single-Walled Carbon Nanotubes from Carbon Monoxide, Bunkyo-ku, Tokyo 113-8656 Co and Mo are often used as catalysts for the catalytic chemical vapor in synthesizing random, vertical and parallel aligned SWNTs on Co and Mo dip-coated quartz substrates from carbon

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

    SciTech Connect (OSTI)

    Kimberlyn C. Mousseau

    2011-10-01T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

    Karagiorgi, Georgia S.; /MIT

    2010-07-01T23:59:59.000Z

    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.

  15. Theoretical study of the interaction of Fe, Fe/sup +/, and FeCO with Ar

    SciTech Connect (OSTI)

    Braga, M.; Almeida, A.L.; Taft, C.A.; Hammond, B.L.; Lester W.A. Jr.

    1988-10-15T23:59:59.000Z

    Ab initio Hartree--Fock calculations were performed on FeAr and FeAr/sup +/ in order to determine the interaction of both neutral and singly-ionized Fe atoms trapped in Ar, and on ArFeCO and FeCOAr in order to ascertain the effect of an Ar matrix on the FeCO molecule. Quadrupole splittings and isomer shifts are computed using ab initio orbital populations and charge densities scaled by a relativistic factor. Good agreement between calculated and experimental hyperfine parameters is found in each case. The interaction energy for Fe/sup +/--Ar has been computed by ab initio Hartree--Fock and effective-core potential (ECP) methods. Both approaches yield a minimum between Fe/sup +/ and Ar at approximately 7.6 bohr.

  16. Survival of orbiting in $^{20}$Ne (7 - 10 MeV/nucleon) + $^{12}$C reactions

    E-Print Network [OSTI]

    C. Bhattacharya; A. Dey; S. Kundu; K. Banerjee; S. Bhattacharya; S. Mukhopadhyay; D. Gupta; T. Bhattacharjee; S. R. Banerjee; S. Bhattacharyya; T. Rana; S. K. Basu; R. Saha; S. Bhattacharjee; K. Krishan; A. Mukherjee; D. Bandopadhyay; C. Beck

    2005-07-20T23:59:59.000Z

    The inclusive energy distributions of fragments with Z $\\geq$ 3 emitted from the bombardment of $^{12}$C by $^{20}$Ne beams with incident energies between 145 and 200 MeV have been measured in the angular range $\\theta_{lab} \\sim$ 10$^\\circ$ - 50$^\\circ$. Damped fragment yields in all cases have been found to be characteristic of emission from fully energy equilibrated composites; for B, C fragments, average Q-values, $$, were independent of the centre of mass emission angle ($\\theta_{c.m}$), and the angular distributions followed $\\sim$1/sin$\\theta_{c.m}$ like variation, signifying long life times of the emitting di-nuclear systems. Total yields of these fragments have been found to be much larger compared to the standard statistical model predictions of the same. This may be indicative of the survival of orbiting like process in $^{12}$C + $^{20}$Ne system at these energies.

  17. Conical Emission from Shock Waves in Ne(1-20 AGeV)+U Collisions

    E-Print Network [OSTI]

    Philip Rau; Jan Steinheimer; Barbara Betz; Hannah Petersen; Marcus Bleicher; Horst Stcker

    2010-03-05T23:59:59.000Z

    The formation and propagation of high-density compression waves, e.g. Mach shock waves, in cold nuclear matter is studied by simulating high-energy nucleus-nucleus collisions of Ne with U in the energy range from E_lab = 0.5 AGeV to 20 AGeV. In an ideal hydrodynamic approach, the high-density shock wave created by the small Ne nucleus passing through the heavy U nucleus is followed by a slower and more dilute Mach shock wave which causes conical emission of particles at the Mach cone angle. The conical emission originates from low-density regions with a small flow velocity comparable to the speed of sound. Moreover, it is shown that the angular distributions of emitted baryons clearly distinguish between a hydrodynamic approach and binary cascade processes used in the Ultra-relativistic Quantum Molecular Dynamics (UrQMD) transport model.

  18. The thermonuclear rate for the 19F(a,p)22Ne reaction at stellar temperatures

    E-Print Network [OSTI]

    Claudio Ugalde; Richard Azuma; Aaron Couture; Joachim Grres; Hye-Young Lee; Edward Stech; Elizabeth Strandberg; Wanpeng Tan; Michael Wiescher

    2008-03-04T23:59:59.000Z

    The $^{19}$F($\\alpha$,p)$^{22}$Ne reaction is considered to be one of the main sources of fluorine depletion in AGB and Wolf-Rayet stars. The reaction rate still retains large uncertainties due to the lack of experimental studies available. In this work the yields for both exit channels to the ground state and first excited state of $^{22}$Ne have been measured and several previously unobserved resonances have been found in the energy range E$_{lab}$=792-1993 keV. The level parameters have been determined through a detailed R-matrix analysis of the reaction data and a new reaction rate is provided on the basis of the available experimental information.

  19. Nome Instituio Pas E-mail Natalia Gabriela Fracassi Instituto Nacional de Tecnologia Agropecuaria Argentina natfracassi@yahoo.com.ar

    E-Print Network [OSTI]

    Agropecuaria Argentina natfracassi@yahoo.com.ar Andre Alexander Held Commonwealth Scientific and Industrial

  20. Neutrino and Anti-neutrino Cross Sections at MiniBooNE

    SciTech Connect (OSTI)

    Dharmapalan, Ranjan [University of Alabama Department of Physics and Astronomy, Tuscaloosa, AL-35487 (United States)

    2011-10-06T23:59:59.000Z

    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 (CH{sub 2}). 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.

  1. A sterile neutrino at MiniBooNE and IceCube

    SciTech Connect (OSTI)

    Masip, Manuel [CAFPE and Depto. Fsica Terica y del Cosmos, Universidad de Granada, 18071 Granada (Spain)

    2014-07-23T23:59:59.000Z

    We discuss the possibility that a sterile neutrino of mass around 50 MeV slightly mixed with the muon flavor may be the origin of the MiniBooNE anomaly. We show that its production in the atmosphere in a fraction of kaon decays would imply an excess of contained showers at IceCube from down-going and near-horizontal directions.

  2. The Photomultiplier Tube Calibration System of the MicroBooNE Experiment

    E-Print Network [OSTI]

    Conrad, J; Moss, Z; Strauss, T; Toups, M

    2015-01-01T23:59:59.000Z

    We report on the design and construction of an LED-based fiber calibration system for large liquid argon time projection detectors. This system was developed to calibrate the optical systems of the MicroBooNE experiment. As well as detailing the materials and installation procedure, we provide technical drawings and specifications so that the system may be easily replicated in future LArTPC detectors.

  3. Investigation of the optical properties of MoS{sub 2} thin films using spectroscopic ellipsometry

    SciTech Connect (OSTI)

    Yim, Chanyoung; O'Brien, Maria; Winters, Sinad [School of Chemistry, Trinity College Dublin, Dublin 2 (Ireland); Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin, Dublin 2 (Ireland); McEvoy, Niall [Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin, Dublin 2 (Ireland); Mirza, Inam; Lunney, James G. [Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin, Dublin 2 (Ireland); School of Physics, Trinity College Dublin, Dublin 2 (Ireland); Duesberg, Georg S., E-mail: duesberg@tcd.ie [School of Chemistry, Trinity College Dublin, Dublin 2 (Ireland); Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin, Dublin 2 (Ireland); Advanced Materials and BioEngineering Research (AMBER) Centre, Trinity College Dublin, Dublin 2 (Ireland)

    2014-03-10T23:59:59.000Z

    Spectroscopic ellipsometry (SE) characterization of layered transition metal dichalcogenide (TMD) thin films grown by vapor phase sulfurization is reported. By developing an optical dispersion model, the extinction coefficient and refractive index, as well as the thickness of molybdenum disulfide (MoS{sub 2}) films, were extracted. In addition, the optical band gap was obtained from SE and showed a clear dependence on the MoS{sub 2} film thickness, with thinner films having a larger band gap energy. These results are consistent with theory and observations made on MoS{sub 2} flakes prepared by exfoliation, showing the viability of vapor phase derived TMDs for optical applications.

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

    E-Print Network [OSTI]

    Levin, Lisa

    (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

  5. High damage-resistant Mo mirror for high-power TEA CO/sub 2/ laser systems

    SciTech Connect (OSTI)

    Ichikawa, Y.; Yoshida, K.; Tsunawaki, Y.; Yamanaka, M.; Yamanaka, T.; Yamanaka, C.; Okamoto, H.; Matsusue, N.; Kitajima, K.

    1987-09-01T23:59:59.000Z

    A high-purity molybdenum (Mo) mirror was developed by an electron-beam melting method (e.b.m. Mo mirror). For high-power TEA CO/sub 2/ laser, the e.b.m. Mo mirror has two to four times higher surface damage threshold than that of an Au-coated glass mirror and three times longer lifetime than that of a powder metallurgy Mo mirror (p.m. Mo mirror) when laser energy density lower than 60 J/cm/sup 2/ was irradiated with a 0.5-pps repetition rate. It was found that the difference between the e.b.m. Mo mirror and the p.m. Mo mirror at the laser-damage threshold was due to the five surface without voids and the small amount of impurities.

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

    SciTech Connect (OSTI)

    Rich Johnson; Kimberlyn C. Mousseau; Hyung Lee

    2011-09-01T23:59:59.000Z

    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.

  7. Aboveground test of an advanced Li$_2$MoO$_4$ scintillating bolometer to search for neutrinoless double beta decay of $^{100}$Mo

    E-Print Network [OSTI]

    T. B. Bekker; N. Coron; F. A. Danevich; V. Ya. Degoda; A. Giuliani; V. D. Grigorieva; N. V. Ivannikova; M. Mancuso; P. de Marcillac; I. M. Moroz; C. Nones; E. Olivieri; G. Pessina; D. V. Poda; V. N. Shlegel; V. I. Tretyak; M. Velazquez

    2014-12-17T23:59:59.000Z

    Large lithium molybdate (Li$_2$MoO$_4$) crystal boules were produced by using the low thermal gradient Czochralski growth technique from deeply purified molybdenum. A small sample from one of the boules was preliminary characterized in terms of X-ray-induced and thermally-excited luminescence. A large cylindrical crystalline element (with a size of $\\oslash 40\\times40$ mm) was used to fabricate a scintillating bolometer, which was operated aboveground at $\\sim 15$ mK by using a pulse-tube cryostat housing a high-power dilution refrigerator. The excellent detector performance in terms of energy resolution and $\\alpha$ background suppression along with preliminary positive indications on the radiopurity of this material show the potentiality of Li$_2$MoO$_4$ scintillating bolometers for low-counting experiment to search for neutrinoless double beta decay of $^{100}$Mo.

  8. Aboveground test of an advanced Li$_2$MoO$_4$ scintillating bolometer to search for neutrinoless double beta decay of $^{100}$Mo

    E-Print Network [OSTI]

    Bekker, T B; Danevich, F A; Degoda, V Ya; Giuliani, A; Grigorieva, V D; Ivannikova, N V; Mancuso, M; de Marcillac, P; Moroz, I M; Nones, C; Olivieri, E; Pessina, G; Poda, D V; Shlegel, V N; Tretyak, V I; Velazquez, M

    2014-01-01T23:59:59.000Z

    Large lithium molybdate (Li$_2$MoO$_4$) crystal boules were produced by using the low thermal gradient Czochralski growth technique from deeply purified molybdenum. A small sample from one of the boules was preliminary characterized in terms of X-ray-induced and thermally-excited luminescence. A large cylindrical crystalline element (with a size of $\\oslash 40\\times40$ mm) was used to fabricate a scintillating bolometer, which was operated aboveground at $\\sim 15$ mK by using a pulse-tube cryostat housing a high-power dilution refrigerator. The excellent detector performance in terms of energy resolution and $\\alpha$ background suppression along with preliminary positive indications on the radiopurity of this material show the potentiality of Li$_2$MoO$_4$ scintillating bolometers for low-counting experiment to search for neutrinoless double beta decay of $^{100}$Mo.

  9. The production of /sup 38/Ar and /sup 39/Ar by 14-MeV neutrons on /sup 39/K

    SciTech Connect (OSTI)

    Foland, K.A.; Borg, R.J.; Mustafa, M.G.

    1987-02-01T23:59:59.000Z

    The authors have determined the cross sections for the production of /sup 38/Ar and /sup 39/Ar from the (n,n'rho) and (n,rho) reactions by neutrons of -- 14 MeV incident on /sup 39/K. Three potassium-bearing specimens were irradiated with fluences of --10/sup 17/ neutrons, and the argon isotopes were measured by mass spectrometry. Previously reported measurements are in substantial disagreement with our results. Values from the three new measurements are consistent with each other and our computational modeling. Nevertheless, there remains an unexplained increase in the cross sections for both reactions as the neutron energy increases from --14.5 to 14.8 MeV.

  10. sup 40 Ar/ sup 39 Ar age calibration of the litho- and paleomagnetic stratigraphies of the Ngorora Formation, Kenya

    SciTech Connect (OSTI)

    Deino, A.; Drake, R. (Institute of Human Origins, Berkeley, CA (USA)); Tauxe, L. (Scripps Institute of Oceanography, La Jolla, CA (USA)); Monaghan, M. (Univ. of Chicago, IL (USA))

    1990-07-01T23:59:59.000Z

    Precise eruptive ages have been determined by the laser-fusion, single-crystal {sup 40}Ar/{sup 39}Ar method for juvenile volcanic feldspars from reworked and contaminated volcaniclastic rocks of the middle Miocene Ngorora Formation, Kenya Rift Valley. These ages range from 13.06 Ma at the base to 10.51 Ma toward the top of the type section near Kabarsero. Correlation of the local paleomagnetic stratigraphies with the geomagnetic reversal time scale yields magnetochronologic age estimates that are younger than the isotopic ages by an average of 0.18 Ma. Much of the discrepancy can be eliminated if an inferred change in sea-floor spreading rate occurred at 13 Ma or earlier, rather than at 10.42 Ma as previously suggested. Sedimentation rates at Kabarsero calculated from the {sup 40}Ar/{sup 39}Ar results decrease from initial values of {approximately}25 cm/1,000 yr to {approximately}5 cm/1,000 yr toward the top of the section. The initial rapid sedimentation rates characterize the first 0.1 to 0.3 m.y. following emplacement of the underlying, voluminous, basin-filling Tiim Phonolites, indicating that the Baringo Basin at this time may not have existed as a rift valley created by extensional tectonics, but instead may have been a subsidence feature formed in response to removal of large volumes of magma from the lithosphere. A premolar tentatively identified as Proconsul sp. indet. found in the Ngorora Formation near the village of Bartabwa has been dated at {approximately}12.42 Ma, representing perhaps the last known occurrence of this genus in the fossil record.

  11. Atomistic simulation of the electronic states of adatoms in monolayer MoS{sub 2}

    SciTech Connect (OSTI)

    Chang, Jiwon; Larentis, Stefano; Tutuc, Emanuel; Register, Leonard F.; Banerjee, Sanjay K. [Microelectronics Research Center, The University of Texas at Austin, Austin, Texas 78758 (United States)

    2014-04-07T23:59:59.000Z

    Using an ab initio density functional theory based electronic structure method, we study the effects of adatoms on the electronic properties of monolayer transition metal dichalcogenide Molybdenum-disulfide (MoS{sub 2}). We consider the 1st (Li, Na, K) and 7th (F, Cl, Br) column atoms and metals (Sc, Ti, Ta, Mo, Pd, Pt, Ag, Au). Three high symmetry sites for the adatom on the surface of monolayer MoS{sub 2} are examined as starting points to search for the most energetically stable configuration for each adatom-monolayer MoS{sub 2} system, as well as the type of associated bonding. For the most stable adatom positions, we characterize the emergence of adatom-induced electronic states including any dopant states.

  12. Monolayers of MoS{sub 2} as an oxidation protective nanocoating material

    SciTech Connect (OSTI)

    Sen, H. Sener [UNAM-National Nanotechnology Research Center, Bilkent University, Ankara 06800 (Turkey); Sahin, H.; Peeters, F. M. [Department of Physics, University of Antwerp, 2610 Antwerp (Belgium); Durgun, E., E-mail: durgun@unam.bilkent.edu.tr [UNAM-National Nanotechnology Research Center, Bilkent University, Ankara 06800 (Turkey); Institute of Materials Science and Nanotechnology, Bilkent University, Ankara 06800 (Turkey)

    2014-08-28T23:59:59.000Z

    First-principle calculations are employed to investigate the interaction of oxygen with ideal and defective MoS{sub 2} monolayers. Our calculations show that while oxygen atoms are strongly bound on top of sulfur atoms, the oxygen molecule only weakly interacts with the surface. The penetration of oxygen atoms and molecules through a defect-free MoS{sub 2} monolayer is prevented by a very high diffusion barrier indicating that MoS{sub 2} can serve as a protective layer for oxidation. The analysis is extended to WS{sub 2} and similar coating characteristics are obtained. Our calculations indicate that ideal and continuous MoS{sub 2} and WS{sub 2} monolayers can improve the oxidation and corrosion-resistance of the covered surface and can be considered as an efficient nanocoating material.

  13. Substrate interactions with suspended and supported monolayer MoS?: Angle-resolved photoemission spectroscopy

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Jin, Wencan; Sadowski, Jerzy T.; Yeh, Po-Chun; Zaki, Nader; Zhang, Datong; Liou, Jonathan T.; Dadap, Jerry I.; Herman, Irving P.; Osgood, Jr., Richard M.; Sutter, Peter; et al

    2015-03-01T23:59:59.000Z

    We report the directly measured electronic structure of exfoliated monolayer molybdenum disulfide (MoS?) using micrometer-scale angle-resolved photoemission spectroscopy. Measurements of both suspended and supported monolayer MoS? elucidate the effects of interaction with a substrate. A suggested relaxation of the in-plane lattice constant is found for both suspended and supported monolayer MoS? crystals. For suspended MoS?, a careful investigation of the measured uppermost valence band gives an effective mass at ? and ? of 2.00m? and 0.43m?, respectively. We also measure an increase in the band linewidth from the midpoint of ?? to the vicinity of ? and briefly discuss itsmorepossible origin.less

  14. Substrate interactions with suspended and supported monolayer MoS?: Angle-resolved photoemission spectroscopy

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Jin, Wencan [Columbia Univ., New York, NY (United States); Sadowski, Jerzy T. [Brookhaven National Lab. (BNL), Upton, NY (United States); Yeh, Po-Chun [Columbia Univ., New York, NY (United States); Zaki, Nader [Columbia Univ., New York, NY (United States); Zhang, Datong [Columbia Univ., New York, NY (United States); Liou, Jonathan T. [Columbia Univ., New York, NY (United States); Dadap, Jerry I. [Columbia Univ., New York, NY (United States); Herman, Irving P. [Columbia Univ., New York, NY (United States); Osgood, Jr., Richard M. [Columbia Univ., New York, NY (United States); Sutter, Peter [Brookhaven National Lab. (BNL), Upton, NY (United States); Barinov, Alexey [Elettra Sincrotrone Trieste, Basovizza, Trieste (Italy); Yablonskikh, Mikhail [Elettra Sincrotrone Trieste, Basovizza, Trieste (Italy)

    2015-03-01T23:59:59.000Z

    We report the directly measured electronic structure of exfoliated monolayer molybdenum disulfide (MoS?) using micrometer-scale angle-resolved photoemission spectroscopy. Measurements of both suspended and supported monolayer MoS? elucidate the effects of interaction with a substrate. A suggested relaxation of the in-plane lattice constant is found for both suspended and supported monolayer MoS? crystals. For suspended MoS?, a careful investigation of the measured uppermost valence band gives an effective mass at ? and ? of 2.00m? and 0.43m?, respectively. We also measure an increase in the band linewidth from the midpoint of ?? to the vicinity of ? and briefly discuss its possible origin.

  15. Intrinsic Electronic Transport Properties of High-Quality Monolayer and Bilayer MoS[subscript 2

    E-Print Network [OSTI]

    Baugher, Britton W. H.

    We report electronic transport measurements of devices based on monolayers and bilayers of the transition-metal dichalcogenide MoS[subscript 2]. Through a combination of in situ vacuum annealing and electrostatic gating ...

  16. MO"BIUS ENERGIES FOR KNOTS AND LINKS, SURFACES AND SUBMANIFOLDS

    E-Print Network [OSTI]

    Kusner, Robert B.

    MO"BIUS ENERGIES FOR KNOTS AND LINKS, SURFACES AND SUBMANIFOLDS energies, especially those which are invariant under M"obius transforma- tions of space. We describe computer experiments with such energies, and discuss ways of extending these to energies

  17. Isothermal activation of Mo2O5 ZSM-5 precursors during

    E-Print Network [OSTI]

    Iglesia, Enrique

    Isothermal activation of Mo2O5 21 ZSM-5 precursors during methane reactions: effects of reaction to petrochemicals and liquid fuels and chemicals remains a formidable technological challenge.1 Exchanged cations

  18. AB INITIO Modeling of Thermomechanical Properties of Mo-Based Alloys for Fossil Energy Conversion

    SciTech Connect (OSTI)

    Ching, Wai-Yim

    2013-12-31T23:59:59.000Z

    In this final scientific/technical report covering the period of 3.5 years started on July 1, 2011, we report the accomplishments on the study of thermo-mechanical properties of Mo-based intermetallic compounds under NETL support. These include computational method development, physical properties investigation of Mo-based compounds and alloys. The main focus is on the mechanical and thermo mechanical properties at high temperature since these are the most crucial properties for their potential applications. In particular, recent development of applying ab initio molecular dynamic (AIMD) simulations to the T1 (Mo{sub 5}Si{sub 3}) and T2 (Mo{sub 5}SiB{sub 2}) phases are highlighted for alloy design in further improving their properties.

  19. Electronic structure and conductivity of nanocomposite metal (Au,Ag,Cu,Mo)-containing amorphous carbon films

    E-Print Network [OSTI]

    Endrino, Jose L.

    2010-01-01T23:59:59.000Z

    dual-cathode arc deposition (PDC-FCVA) source containingand metal cathodes [2]. The PDC-FCVA system in combinationCu,Mo) incorporation in a-C by PDC-FCVA. The modification of

  20. Combining sedimentological, trace metal (Mn, Mo) and molecular evidence for reconstructing past water-column

    E-Print Network [OSTI]

    Wehrli, Bernhard

    Combining sedimentological, trace metal (Mn, Mo) and molecular evidence for reconstructing past online 22 June 2013 Abstract Here, we present sedimentological, trace metal, and molecular evidence underscores the value of combining sedimentological, geochemical, and microbiological approaches

  1. Enhanced absorption of monolayer MoS{sub 2} with resonant back reflector

    SciTech Connect (OSTI)

    Liu, Jiang-Tao, E-mail: jtliu@semi.ac.cn; Liu, Nian-Hua [Nanoscale Science and Technology Laboratory, Institute for Advanced Study, Nanchang University, Nanchang 330031 (China); Department of Physics, Nanchang University, Nanchang 330031 (China); Wang, Tong-Biao [Department of Physics, Nanchang University, Nanchang 330031 (China); Li, Xiao-Jing [College of Physics and Energy, Fujian Normal University, Fuzhou 350007 (China)

    2014-05-21T23:59:59.000Z

    The optical absorption of monolayer MoS{sub 2} on top of one-dimensional photonic crystal (1DPC) or metal films with spacer layers is theoretically investigated by extracting the permittivity of monolayer MoS{sub 2} from existing experimental results [K. F. Mak et al., Phys. Rev. Lett. 105, 136805 (2010)]. The absorption of graphene with 1DPC across a broad spectral range is substantially enhanced because of the photonic localization at the optical micro-cavity on top of the 1DPC or metal films. The absorption of monolayer MoS{sub 2} can be tuned by varying either the distance between the monolayer MoS{sub 2} and the back reflector or the thickness of the cover layers.

  2. Role of Penning ionization in the enhancement of streamer channel conductivity and Ar(1s{sub 5}) production in a He-Ar plasma jet

    SciTech Connect (OSTI)

    Sands, Brian L. [UES, Inc., 4401 Dayton-Xenia Rd., Dayton, Ohio 45432 (United States); Huang, Shih K.; Speltz, Jared W.; Niekamp, Matthew A. [Department of Mechanical and Materials Engineering, Wright State University, 3640 Colonel Glenn Hwy., Dayton, Ohio 45435 (United States); Ganguly, Biswa N. [Air Force Research Laboratory, 1950 5th St. Wright Patterson Air Force Base, Ohio 45433 (United States)

    2013-04-21T23:59:59.000Z

    Plasma jet devices that use a helium gas flow mixed with a small percentage of argon have been shown to operate with a larger discharge current and enhanced production of the Ar(1s{sub 5}) metastable state, particularly in the discharge afterglow. In this experiment, time-resolved quantitative measurements of He(2{sup 3}S{sub 1}) and Ar(1s{sub 5}) metastable species were combined with current and spectrally resolved emission measurements to elucidate the role of Penning ionization in a helium plasma jet with a variable argon admixture. The plasma jet was enclosed in a glass chamber through which a flowing nitrogen background was maintained at 600 Torr. At 3%-5% Ar admixture, we observed a {approx}50% increase in the peak circuit current and streamer velocity relative to a pure helium plasma jet for the same applied voltage. The streamer initiation delay also decreased by {approx}20%. Penning ionization of ground-state argon was found to be the dominant quenching pathway for He(2{sup 3}S{sub 1}) up to 2% Ar and was directly correlated with a sharp increase in both the circuit current and afterglow production of Ar(1s{sub 5}) for Ar admixtures up to 1%, but not necessarily with the streamer velocity, which increased more gradually with Ar concentration. Ar(1s{sub 5}) was produced in the afterglow through recombination of Ar{sup +} and dissociative recombination of Ar{sub 2}{sup +} as the local mean electron energy decreased in the plasma channel behind the streamer head. The discharge current and argon metastable enhancement are contingent on the rapid production of He(2{sup 3}S{sub 1}) near the streamer head, >5 Multiplication-Sign 10{sup 12} cm{sup -3} in 30 ns under the conditions of this experiment.

  3. sup 40 Ar/ sup 39 Ar ages of six Apollo 15 impact melt rocks by laser step heating

    SciTech Connect (OSTI)

    Dalrymple, G.B. (Geological Survey, Menlo Park, CA (USA)); Ryder, G. (Lunar and Planetary Inst., Houston, TX (USA))

    1991-06-01T23:59:59.000Z

    The authors have obtained 15 high resolution (21-51 step) {sup 40}Ar/{sup 39}Ar age spectra on six Apollo 15 impact melt rocks of different compositions using a continuous laser system on submilligram subsamples and on single crystal plagioclase clasts. Four of the six samples gave reproducible age spectra with well-defined intermediate temperature plateaus over 48% or more of the {sup 39}AR released; the plateaus are interpreted as crystallization ages. Samples 15304,7,69, 15294,6,21, and 15314,26,156 gave virtually identical plateau ages whose weighted mean is 3,870 {plus minus} 6 Ma. These three melt rocks differ in composition and likely formed in three separate impact events. Sample 15356,9 gave replicate plateau ages that average 3,836 {plus minus} 12 Ma and date a fourth and younger impact event. The age spectra for samples 15308,9 and 15414,3,36 increase with increasing increment temperature and may have been formed in or affected by impacts at about 2,700 Ma and 3,870 Ma, respectively. So far there continues to be no convincing evidence in the lunar record for impact melts older than about 3.9 Ga.

  4. Diffusional Interactions between U-Mo and Zr at 650C as a Function of Time

    SciTech Connect (OSTI)

    Y. Park; Y. H. Sohn; D. D. Keiser, Jr.

    2015-01-01T23:59:59.000Z

    Development of monolithic U-Mo alloy fuel (typically U-10wt.%Mo) for the Reduced Enrichment for Research and Test Reactors (RERTR) program requires a use of Zr diffusion barrier to eliminate the diffusional interaction between the fuel alloy and Al-alloy cladding. The application of Zr barrier to the U-Mo fuel requires co-rolling process that utilizes a soaking temperature of 650C, which represents the highest temperature the fuel system is exposed to during both fuel manufacturing and reactor application. Therefore, in this study, development of phase constituents, microstructure and diffusion kinetics of U-10wt.%Mo and Zr was examined using solid-to-solid diffusion couples annealed at 650C for 240, 480 and 720 hours. Diffusional interactions were analyzed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Within the diffusion zone, a single-phase layer of -Zr was observed along with a discontinuous layer of Mo2Zr at the interface between the terminal ?-U(Mo) alloy and -Zr. In the vicinity of Mo2Zr phase, islands of -U and a-Zr phases were also found. In addition, accicular a-Zr phases were observed within the ?-U(Mo). Growth rate of this diffuaional interaction layer was determined to be 8.76 x 10-15 m2/sec, however with an assumption of certain incubation period. Consistency in these observation along with concentration profiles and diffusion paths are presented and discussed with respect to the diffusion couple that was furnace-cooled, annealed at 700C in our previous study, and isothermal ternary phase diagram at 700C.

  5. MoS{sub 2} nanotube exfoliation as new synthesis pathway to molybdenum blue

    SciTech Connect (OSTI)

    Visic, B., E-mail: bojana.visic@ijs.si [Jozef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana (Slovenia); Gunde, M. Klanjsek [National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana (Slovenia)] [National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana (Slovenia); Kovac, J.; Iskra, I. [Jozef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana (Slovenia)] [Jozef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana (Slovenia); Jelenc, J.; Remskar, M. [Jozef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana (Slovenia) [Jozef Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana (Slovenia); Centre of Excellence Namaste, Jamova cesta 39, SI-1000 Ljubljana (Slovenia)

    2013-02-15T23:59:59.000Z

    Graphical abstract: . Display Omitted Highlights: ? New synthesis approach to obtaining molybdenum blue via exfoliated MoS{sub 2} nanotubes. ? Material is prone to self assembly and is stable in high vacuum. ? Molecules are as small as 2 nm and their clusters are up to tens of nanometers. ? Change in absorption and oxidation states from the precursor MoS{sub 2}. -- Abstract: Molybdenum blue-type materials are usually obtained by partially reducing Mo{sup VI+} in acidic solutions, while in the presented method it is formed in ethanol solution of exfoliated MoS{sub 2} nanotubes, where the MoS{sub 2} flakes are the preferential location for their growth. Material was investigated by means of scanning electron and atomic force microscopy, showing the structure and self assembly, while also confirming that it is stable in high vacuum with molecules as small as 1.6 nm and the agglomerates of few tens of nanometres. The ultravioletvisible and photoelectron spectrometry show the change in absorption properties and oxidation states from MoS{sub 2} structure to molybdenum blue, while the presence of sulphur suggests that this is a new type of molybdenum blue material.

  6. Effects of thermal treatment on the co-rolled U-Mo fuel foils

    SciTech Connect (OSTI)

    Dennis D. Keiser, Jr.; Tammy L. Trowbridge; Cynthia R. Breckenridge; Brady L. Mackowiak; Glenn A. Moore; Barry H. Rabin; Mitchell K. Meyer

    2014-11-01T23:59:59.000Z

    A monolithic fuel type is being developed to convert US high performance research and test reactors such as Advanced Test Reactor (ATR) at Idaho National Laboratory from highly enriched uranium (HEU) to low-enriched uranium (LEU). The interaction between the cladding and the U-Mo fuel meat during fuel fabrication and irradiation is known to have negative impacts on fuel performance, such as mechanical integrity and dimensional stability. In order to eliminate/minimize the direct interaction between cladding and fuel meat, a thin zirconium diffusion barrier was introduced between the cladding and U-Mo fuel meat through a co-rolling process. A complex interface between the zirconium and U-Mo was developed during the co-rolling process. A predictable interface between zirconium and U-Mo is critical to achieve good fuel performance since the interfaces can be the weakest link in the monolithic fuel system. A post co-rolling annealing treatment is expected to create a well-controlled interface between zirconium and U-Mo. A systematic study utilizing post co-rolling annealing treatment has been carried out. Based on microscopy results, the impacts of the annealing treatment on the interface between zirconium and U-Mo will be presented and an optima annealing treatment schedule will be suggested. The effects of the annealing treatment on the fuel performance will also be discussed.

  7. Photoluminescent BaMoO{sub 4} nanopowders prepared by complex polymerization method (CPM)

    SciTech Connect (OSTI)

    Azevedo Marques, Ana Paula de [Laboratorio de Analise Termica e Materiais, Departamento de Quimica, Universidade Federal do Rio Grande do Norte, 59072-970 Natal, RN (Brazil)]. E-mail: apamarques@liec.ufscar.br; Melo, Dulce M.A. de [Laboratorio de Analise Termica e Materiais, Departamento de Quimica, Universidade Federal do Rio Grande do Norte, 59072-970 Natal, RN (Brazil); Paskocimas, Carlos A. [Departamento de Engenharia Mecanica, Universidade Federal do Rio Grande do Norte, 59072-970 Natal, RN (Brazil); Pizani, Paulo S. [Laboratorio de Semicondutores, Departamento de Fisica, Universidade Federal de Sao Carlos, 13565-905 Sao Carlos, SP (Brazil); Joya, Miryam R. [Laboratorio de Semicondutores, Departamento de Fisica, Universidade Federal de Sao Carlos, 13565-905 Sao Carlos, SP (Brazil); Leite, Edson R. [Laboratorio Interdisciplinar de Eletroquimica e Ceramica, CMDMC, Departamento de Quimica, Universidade Federal de Sao Carlos 13565-905, Sao Carlos, SP (Brazil); Longo, Elson [CMDMC, LIEC, Instituto de Quimica, Universidade Estadual Paulista, 14801-907 Araraquara, SP (Brazil)

    2006-03-15T23:59:59.000Z

    The BaMoO{sub 4} nanopowders were prepared by the Complex Polymerization Method (CPM). The structure properties of the BaMoO{sub 4} powders were characterized by FTIR transmittance spectra, X-ray diffraction (XRD), Raman spectra, photoluminescence spectra (PL) and high-resolution scanning electron microscopy (HR-SEM). The XRD, FTIR and Raman data showed that BaMoO{sub 4} at 300 deg. C was disordered. At 400 deg. C and higher temperature, BaMoO{sub 4} crystalline scheelite-type phases could be identified, without the presence of additional phases, according to the XRD, FTIR and Raman data. The calculated average crystallite sizes, calculated by XRD, around 40 nm, showed the tendency to increase with the temperature. The crystallite sizes, obtained by HR-SEM, were around of 40-50 nm. The sample that presented the highest intensity of the red emission band was the one heat treated at 400 deg. C for 2 h, and the sample that displayed the highest intensity of the green emission band was the one heat treated at 700 deg. C for 2 h. The CPM was shown to be a low cost route for the production of BaMoO{sub 4} nanopowders, with the advantages of lower temperature, smaller time and reduced cost. The optical properties observed for BaMoO{sub 4} nanopowders suggested that this material is a highly promising candidate for photoluminescent applications.

  8. Synthesis and characterization of the ((CO)/sub 4/MoS/sub 2/MS/sub 2/)/sup 2 -/ and ((CO)/sub 4/MoS/sub 2/MS/sub 2/Mo(CO)/sub 4/)/sup 2 -/ ions (M = Mo, W): species containing group VI (6) metals in widely separated formal oxidation states

    SciTech Connect (OSTI)

    Rosenhein, L.D.; McDonald, J.W.

    1987-10-07T23:59:59.000Z

    Dinuclear and trinuclear sulfide-bridged complexes of the types (Et/sub 4/N)/sub 2/(MS/sub 4/(Mo(CO)/sub 4/)) and (Et/sub 4/N)/sub 2/(MS/sub 4/(Mo(CO)/sub 4/)/sub 2/) were prepared by the reaction of one or two equivalents of Mo(CO)/sub 4/(C/sub 7/H/sub 8/) (C/sub 7/H/sub 8/ = norbornadiene) with (Et/sub 4/N)/sub 2/(MS/sub 4/) (M = Mo, W) in methyl alcohol. Elemental analyses were consistent with the proposed formulae. Infrared spectra of all four compounds contain strong bands in the carbonyl region and low-energy bands characteristic of terminal and bridging M-S vibrations in linear, polynuclear, and sulfido-bridged species. Electrochemical experimental results support the hypothesis that the di- and trinuclear species contain both M(IV) (M = Mo, W) and Mo(0) oxidation states in the same complex. 33 references, 2 tables.

  9. Food and Drug Administration process validation activities to support 99Mo production at Sandia National Laboratories

    SciTech Connect (OSTI)

    McDonald, M.J.; Bourcier, S.C.; Talley, D.G.

    1997-07-01T23:59:59.000Z

    Prior to 1989 {sup 99}Mo was produced in the US by a single supplier, Cintichem Inc., Tuxedo, NY. Because of problems associated with operating its facility, in 1989 Cintichem elected to decommission the facility rather than incur the costs for repair. The demise of the {sup 99}Mo capability at Cintichem left the US totally reliant upon a single foreign source, Nordion International, located in Ottawa Canada. In 1992 the DOE purchased the Cintichem {sup 99}Mo Production Process and Drug Master File (DMF). In 1994 the DOE funded Sandia National Laboratories (SNL) to produce {sup 99}Mo. Although Cintichem produced {sup 99}Mo and {sup 99m}Tc generators for many years, there was no requirement for process validation which is now required by the Food and Drug Administration (FDA). In addition to the validation requirement, the requirements for current Good manufacturing Practices were codified into law. The purpose of this paper is to describe the process validation being conducted at SNL for the qualification of SNL as a supplier of {sup 99}Mo to US pharmaceutical companies.

  10. 20Ne

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less isNFebruaryOctober 2, 2014Energy,F β--Decay EvaluatedMgNNa

  11. NE-23

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTableSelling7 August 2008 Office7-TACi+J-UN 2DCTt-tJOF

  12. NE-23,

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTableSelling7 August 2008 Office7-TACi+J-UN>:-1.

  13. NE-23:

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTableSelling7 August 2008 Office7-TACi+J-UN>:-1.1 , : -2

  14. NE-24

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTableSelling7 August 2008 Office7-TACi+J-UN>:-1.1 , :

  15. 18Ne

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less isN Ground-State Decay Evaluated Dataargeα, X)p, X)83BCFMgNNe

  16. 18Ne

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less isN Ground-State Decay Evaluated Dataargeα, X)p, X)83BCFMgNNe

  17. NE-20

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA groupTuba City, Arizona, DisposalFourthN V O 1 8 7 + PROJECT

  18. NE-24

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA groupTuba City, Arizona, DisposalFourthN V O 1 8 7 + PROJECTpi/L +3 *3L 52.the

  19. 17Ne

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less isN Ground-State Decay Evaluated Dataargeα, X) (CurrentBCFNNe

  20. Mechanistic study of methanol synthesis from CO? and H? on a modified model Mo?S? cluster

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Liu, Cheng [Yangzhou Univ., Yangzhou, Jiangsu (China); Liu, Ping [Brookhaven National Lab. (BNL), Upton, NY (United States)

    2015-02-06T23:59:59.000Z

    We report the methanol synthesis from CO? and H? on metal (M = K, Ti, Co, Rh, Ni, and Cu)-modified model Mo?S? catalyst using density functional theory (DFT). The results show that the catalytic behavior of a Mo?S? cluster is changed significantly due to the modifiers, via the electron transfer from M to Mo?S? and therefore the reduction of the Mo cation (ligand effect) and the direct participation of M in the reaction (ensemble effect) to promote some elementary steps. With the most positively charged modifier, the ligand effect in the case of K-Mo?S? is the most obvious among the systems studied; however it cannot compete with the ensemble effect, which plays a dominate role in determining activity via the electrostatic attraction in particular to stabilize the CHxOy species adsorbed at the Mo sites of Mo?S?. In comparison, the ligand effect is weaker and the ensemble effect is more important when the other modifiers are used. In addition, the modifiers also vary the optimal reaction pathway for methanol synthesis on Mo?S?, ranging from the reverse water-gas shift (RWGS) + CO hydrogenation as that of Mo?S? to the formate pathway. Finally, K is able to accelerate the methanol synthesis on Mo?S? the most; while the promotion by Rh is relatively small. Using the modifiers like Ti, Co, Ni, and Cu, the activity of Mo?S? is decreased instead. The relative stability between *HCOO and *HOCO is identified as a descriptor to capture the variation in mechanism and scales well with the estimated activity. Our study not only provides better understanding of the reaction mechanism and actives on the modified Mo?S?, but also predicts some possible candidates, which can be used a promoter to facilitate the CH?OH synthesis on Mo sulfides.

  1. Mechanistic study of methanol synthesis from CO? and H? on a modified model Mo?S? cluster

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Liu, Cheng; Liu, Ping

    2015-02-06T23:59:59.000Z

    We report the methanol synthesis from CO? and H? on metal (M = K, Ti, Co, Rh, Ni, and Cu)-modified model Mo?S? catalyst using density functional theory (DFT). The results show that the catalytic behavior of a Mo?S? cluster is changed significantly due to the modifiers, via the electron transfer from M to Mo?S? and therefore the reduction of the Mo cation (ligand effect) and the direct participation of M in the reaction (ensemble effect) to promote some elementary steps. With the most positively charged modifier, the ligand effect in the case of K-Mo?S? is the most obvious among themoresystems studied; however it cannot compete with the ensemble effect, which plays a dominate role in determining activity via the electrostatic attraction in particular to stabilize the CHxOy species adsorbed at the Mo sites of Mo?S?. In comparison, the ligand effect is weaker and the ensemble effect is more important when the other modifiers are used. In addition, the modifiers also vary the optimal reaction pathway for methanol synthesis on Mo?S?, ranging from the reverse water-gas shift (RWGS) + CO hydrogenation as that of Mo?S? to the formate pathway. Finally, K is able to accelerate the methanol synthesis on Mo?S? the most; while the promotion by Rh is relatively small. Using the modifiers like Ti, Co, Ni, and Cu, the activity of Mo?S? is decreased instead. The relative stability between *HCOO and *HOCO is identified as a descriptor to capture the variation in mechanism and scales well with the estimated activity. Our study not only provides better understanding of the reaction mechanism and actives on the modified Mo?S?, but also predicts some possible candidates, which can be used a promoter to facilitate the CH?OH synthesis on Mo sulfides.less

  2. Impact of the uncertainty in ?-captures on {sup 22}Ne on the weak s-process in massive stars

    SciTech Connect (OSTI)

    Nishimura, N. [Astrophysics group, EPSAM, Keele University, Keele, ST5 1BH, UK and NuGrid Project (United Kingdom); Hirschi, R. [Astrophysics group, EPSAM, Keele University, Keele, ST5 1BH, UK and Kavli IPMU (WPI), University of Tokyo, Kashiwa, 277-8583 (Japan); Pignatari, M. [NuGrid Project and Department of Physics, University of Basel, Basel, CH-4056 (Switzerland); Herwig, F. [NuGrid Project and Department of Physics and Astronomy, University of Victoria, Victoria, BC V8P5C2 (Canada); Beard, M. [NuGrid Project and Department of Physics, University of Notre Dame, Notre Dame, IN 46556 (United States); Imbriani, G. [Dipartiment di Scienze Fisiche, Universita di Napoli Federico II, Napoli (Italy); Grres, J.; Boer, R. J. de; Wiescher, M. [Department of Physics, University of Notre Dame, Notre Dame, IN 46556 (United States)

    2014-05-02T23:59:59.000Z

    Massive stars at solar metallicity contribute to the production of heavy elements with atomic masses between A = 60 and A = 90 via the so-called weak s-process (which takes place during core He and shell C burning phases). Furthermore, recent studies have shown that rotation boosts the s-process production in massive stars at low metallicities, with a production that may reach the barium neutron-magic peak. These results are very sensitive to neutron source and neutron poison reaction rates. For the weak s-process, the main neutron source is the reaction {sup 22}Ne(?,n){sup 25}Mg, which is in competition with {sup 22}Ne(?,?){sup 26}Mg. The uncertainty of both rates strongly affects the nucleosynthesis predictions from stellar model calculations. In this study, we investigate the impact of the uncertainty in ?-captures on {sup 22}Ne on the s-process nucleosynthesis in massive stars both at solar and at very low metallicity. For this purpose, we post-process, with the Nugrid mppnp code, non-rotating and rotating evolutionary models 25M{sub ?} stars at two different metallicities: Z = Z{sub ?} and Z = 10{sup ?5}Z{sub ?}, respectively. Our results show that uncertainty of {sup 22}Ne(?,n){sup 25}Mg and {sup 22}Ne(?,?){sup 26}Mg rates have a significant impact on the final elemental production especially for metal poor rotating models. Beside uncertainties in the neutron source reactions, for fast rotating massive stars at low metallicity we revisit the impact of the neutron poisoning effect by the reaction chain {sup 16}O(n,?){sup 17}O(?,?){sup 21}Ne, in competition with the {sup 17}O(?,n){sup 20}Ne, recycling the neutrons captured by {sup 16}O.

  3. \\b{eta}-delayed three-proton decay of 31Ar

    E-Print Network [OSTI]

    Lis, A A; Dominik, W; Janas, Z; Pftzner, M; Pomorski, M; Acosta, L; Baraeva, S; Casarejos, E; Dunas-Daz, J; Dunin, V; Espino, J M; Estrade, A; Farinon, F; Fomichev, A; Geissel, H; Gorshkov, A; Kami?ski, G; Kiselev, O; Knbel, R; Krupko, S; Kuich, M; Litvinov, Yu A; Marquinez-Durn, G; Martel, I; Mukha, I; Nociforo, C; Ordz, A K; Pietri, S; Prochazka, A; Snchez-Bentez, A M; Simon, H; Sitar, B; Slepnev, R; Stanoiu, M; Strmen, P; Szarka, I; Takechi, M; Tanaka, Y; Weick, H; Winfield, J S

    2015-01-01T23:59:59.000Z

    The beta decay of 31Ar, produced by fragmentation of a 36Ar beam at 880 MeV/nucleon, was investigated. Identified ions of 31Ar were stopped in a gaseous time projection chamber with optical readout allowing to record decay events with emission of protons. In addition to \\b{eta}-delayed emission of one and two protons we have clearly observed the beta-delayed three-proton branch. The branching ratio for this channel in 31Ar is found to be 0.07(2)%.

  4. \\b{eta}-delayed three-proton decay of 31Ar

    E-Print Network [OSTI]

    A. A. Lis; C. Mazzocchi; W. Dominik; Z. Janas; M. Pftzner; M. Pomorski; L. Acosta; S. Baraeva; E. Casarejos; J. Dunas-Daz; V. Dunin; J. M. Espino; A. Estrade; F. Farinon; A. Fomichev; H. Geissel; A. Gorshkov; G. Kami?ski; O. Kiselev; R. Knbel; S. Krupko; M. Kuich; Yu. A. Litvinov; G. Marquinez-Durn; I. Martel; I. Mukha; C. Nociforo; A. K. Ordz; S. Pietri; A. Prochazka; A. M. Snchez-Bentez; H. Simon; B. Sitar; R. Slepnev; M. Stanoiu; P. Strmen; I. Szarka; M. Takechi; Y. Tanaka; H. Weick; J. S. Winfield

    2015-05-29T23:59:59.000Z

    The beta decay of 31Ar, produced by fragmentation of a 36Ar beam at 880 MeV/nucleon, was investigated. Identified ions of 31Ar were stopped in a gaseous time projection chamber with optical readout allowing to record decay events with emission of protons. In addition to \\b{eta}-delayed emission of one and two protons we have clearly observed the beta-delayed three-proton branch. The branching ratio for this channel in 31Ar is found to be 0.07(2)%.

  5. Oxygen-driven relaxation processes in pre-irradiated Ar cryocrystals

    E-Print Network [OSTI]

    Savchenko, E. V; Belov, A. G; Gumenchuk, G. B; Ponomaryov, A. N; Bondybey, V. E

    2006-01-01T23:59:59.000Z

    Excitations of Solid Oxygen ?in Russian?, B. I. Verkin andNUMBER 11 NOVEMBER 2006 Oxygen-driven relaxation processes? Relaxation processes in oxygen-containing Ar cryocrystals

  6. Enriched Zn$^{100}$MoO$_4$ scintillating bolometers to search for $0 ? 2?$ decay of $^{100}$Mo with the LUMINEU experiment

    E-Print Network [OSTI]

    A. S. Barabash; D. M. Chernyak; F. A. Danevich; A. Giuliani; I. M. Ivanov; E. P. Makarov; M. Mancuso; S. Marnieros; S. G. Nasonov; C. Nones; E. Olivieri; G. Pessina; D. V. Poda; V. N. Shlegel; M. Tenconi; V. I. Tretyak; Ya. V. Vasiliev; M. Velazquez; V. N. Zhdankov

    2014-07-05T23:59:59.000Z

    The LUMINEU project aims at performing a demonstrator underground experiment searching for the neutrinoless double beta decay of the isotope $^{100}$Mo embedded in zinc molybdate (ZnMoO$_4$) scintillating bolometers. In this context, a zinc molybdate crystal boule enriched in $^{100}$Mo to 99.5\\% with a mass of 171 g was grown for the first time by the low-thermal-gradient Czochralski technique. The production cycle provided a high yield (the crystal boule mass was 84\\% of initial charge) and an acceptable level -- around 4\\% -- of irrecoverable losses of the costy enriched material. Two crystals of 59 g and 63 g, obtained from the enriched boule, were tested aboveground at milli-Kelvin temperature as scintillating bolometers. They showed a high detection performance, equivalent to that of previously developed natural ZnMoO$_4$ detectors. These results pave the way to future sensitive searches based on the LUMINEU technology, capable to approach and explore the inverted hierarchy region of the neutrino mass pattern.

  7. The response of NE 102 to 2.6-28.0 MeV neutrons

    E-Print Network [OSTI]

    Martin, Stephen Dobie

    1979-01-01T23:59:59.000Z

    y(c), (b) the location of T, and (c) the location of a time channel T in the 0 n neutron continuum. 16 6. H vs. E spectrum for the first data run, Ed ? 12. 5 NeV. . . 20 n Proton recoil spectrum for tine channel 35 (E = 23. 5 MeV) from... Page calculated data points of Gocding and Pugh and with the measured data points of Evans and Eellamy, Nadey et al. , and Nadey and Waterman . 42 17. Zero extrapolated ~ given in table 7 fitted to the present data and to the data of refs. 5 and 6...

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

    SciTech Connect (OSTI)

    Sadasivan, Pratap [Los Alamos National Laboratory

    2012-06-21T23:59:59.000Z

    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.

  9. Horn Operational Experience in K2K, MiniBooNE, NuMI and CNGS

    E-Print Network [OSTI]

    Pardons, A

    2008-01-01T23:59:59.000Z

    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.

  10. Effectiveness of projectile screening in single and multiple ionization of Ne by B{sup 2+}

    SciTech Connect (OSTI)

    Wolff, W.; Luna, H.; Santos, A. C. F.; Montenegro, E. C. [Instituto de Fisica, Universidade Federal do Rio de Janeiro, Caixa Postal 68528, Rio de Janeiro, 21945-970 RJ (Brazil); DuBois, R. D. [Department of Physics, Missouri University of Science and Technology, Rolla, Missouri 65409 (United States); Montanari, C. C.; Miraglia, J. E. [Instituto de Astronomia y Fisica del Espacio, Casilla de Correo 67, Sucursal 28, C1428EGA, Buenos Aires (Argentina)

    2011-10-15T23:59:59.000Z

    Pure multiple ionization cross sections of Ne by B{sup 2+} projectiles have been measured in the energy range of 0.75 to 4.0 MeV and calculated using the continuum distorted wave-eikonal initial state approximation. The experiment and calculations show that the ionization cross sections by B{sup 2+}, principally for the production of highly charged recoils, is strongly enhanced when compared to the bare projectile with the same charge state, He{sup 2+}, at the same velocities.

  11. Two-color CO{sub 2}/HeNe laser interferometer for C-2 experiment

    SciTech Connect (OSTI)

    Gornostaeva, O.; Deng, B. H.; Garate, E.; Gota, H.; Kinley, J.; Schroeder, J.; Tuszewski, M. [Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688 (United States)

    2010-10-15T23:59:59.000Z

    A six-channel two-color interferometer has been developed for plasma electron density measurements in the C-2 field reversed configuration experiment. A CO{sub 2} laser is utilized as the main probe beams, while copropagating visible HeNe laser beams are mainly sensitive to vibration. Density measurements in C-2 plasmas have shown that this is a reliable turn-key system. The maximum residual phase noise after vibration compensation is less than {+-}5 deg., corresponding to a line integral density of 3x10{sup 18} m{sup -2}. The time resolution for routine operation is 2 {mu}s.

  12. LSND versus MiniBooNE: Sterile neutrinos with energy dependent masses and mixing?

    E-Print Network [OSTI]

    Thomas Schwetz

    2008-01-25T23:59:59.000Z

    Standard active--sterile neutrino oscillations do not provide a satisfactory description of the LSND evidence for neutrino oscillations together with the constraints from MiniBooNE and other null-result short-baseline oscillation experiments. However, if the mass or the mixing of the sterile neutrino depends in an exotic way on its energy all data become consistent. I explore the phenomenological consequences of the assumption that either the mass or the mixing scales with the neutrino energy as $1/E_\

  13. MiniBooNE Neutrino Physics at the University of Alabama

    SciTech Connect (OSTI)

    Stancu, Ion

    2007-04-27T23:59:59.000Z

    This report summarizes the activities conducted by the UA group under the auspices of the DoE/EPSCoR grant number DE--FG02--04ER46112 since the date of the previous progress report, i.e., since November 2005. It also provides a final report of the accomplishments achieved during the entire period of this grant (February 2004 to January 2007). The grant has fully supported the work of Dr. Yong Liu (postdoctoral research assistant -- in residence at Fermilab) on the MiniBooNE reconstruction and particle identification (PID) algorithms.

  14. Thermonuclear reaction rate of $^{18}$Ne($?$,$p$)$^{21}$Na from Monte-Carlo calculations

    E-Print Network [OSTI]

    P. Mohr; R. Longland; C. Iliadis

    2014-12-14T23:59:59.000Z

    The $^{18}$Ne($\\alpha$,$p$)$^{21}$Na reaction impacts the break-out from the hot CNO-cycles to the $rp$-process in type I X-ray bursts. We present a revised thermonuclear reaction rate, which is based on the latest experimental data. The new rate is derived from Monte-Carlo calculations, taking into account the uncertainties of all nuclear physics input quantities. In addition, we present the reaction rate uncertainty and probability density versus temperature. Our results are also consistent with estimates obtained using different indirect approaches.

  15. Thermonuclear reaction rate of $^{18}$Ne($\\alpha$,$p$)$^{21}$Na from Monte-Carlo calculations

    E-Print Network [OSTI]

    Mohr, P; Iliadis, C

    2014-01-01T23:59:59.000Z

    The $^{18}$Ne($\\alpha$,$p$)$^{21}$Na reaction impacts the break-out from the hot CNO-cycles to the $rp$-process in type I X-ray bursts. We present a revised thermonuclear reaction rate, which is based on the latest experimental data. The new rate is derived from Monte-Carlo calculations, taking into account the uncertainties of all nuclear physics input quantities. In addition, we present the reaction rate uncertainty and probability density versus temperature. Our results are also consistent with estimates obtained using different indirect approaches.

  16. Skåne County, Sweden: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro Industries Pvt LtdShawangunk, New York:SiG SolarSkykomish, Washington: EnergySkåne County,

  17. 2015 Annual EM/NE/SC SQA Support Group Meeting | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China 2015ofDepartment ofCBFO-13-3322(EE)DepartmentVery5 Annual EM/NE/SC SQA Support Group

  18. Contacts for MicroBooNE plots and other data representations

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power Administration would likeConstitution And Bylaws |Contact UsContacts for MicroBooNE plots

  19. 2010 Annual Planning Summary for Nuclear Energy (NE) | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: The Future of BadTHE U.S. DEPARTMENTTechnologies09 SPRofNuclear Energy (NE) 2010

  20. Introduction to MiniBooNE and Charged Current Quasi-Elastic (CCQE) Results

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn OtherEnergyBPA-Film-Collection Sign In About |MiniBooNE

  1. Microsoft PowerPoint - TAUP_07_MiniBooNE.ppt

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHighandSWPA / SPRA / USACE SWPA / SPRA / USACE MarshallWeEarlWe28MinibooNE

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

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA groupTuba City, Arizona, DisposalFourthN V O 1 8 7 + PROJECTpi/L +3 *3L 52. NE-23

  3. Dusty Plasma in He-Ar Glow Discharge

    SciTech Connect (OSTI)

    Maiorov, S. A. [A. M. Prokhorov Institute for General Physics under Russian Academy of Sciences, Moscow (Russian Federation); Ramazanov, T. S.; Dzhumagulova, K. N.; Dosbolayev, M. K.; Jumabekov, A. N. [IETP, al-Farabi Kazakh National University, 96a, Tole bi St., Almaty, 050012 (Kazakhstan)

    2008-09-07T23:59:59.000Z

    The paper reports on the first experiments with plasma-dust formations in dc gas discharge plasma for He-Ar mixture. It is shown that under the conventional conditions of the experiments with dusty structures in plasma, the choice of light and heavy gases for the mixture suppresses electron heating in electric field and results in a supersonic jet with high Mach numbers. Distribution functions for drifting ions in the gas mixture are calculated for various mixture concentrations, electric field strengths and gas pressures.

  4. Category:Little Rock, AR | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty EditCalifornia:Power LPInformationCashtonGo Back to PV EconomicsdisplaysAR"

  5. Control of absorption of monolayer MoS$_{2}$ thin-film transistor in one-dimensional defective photonic crystal

    E-Print Network [OSTI]

    Yang, Fang-Fang; Xiao, Wen-bo; Liu, Jiang-Tao; Liu, Nian-Hua

    2014-01-01T23:59:59.000Z

    The light absorption and transmission of monolayer MoS$_{2}$ in a one-dimensional defective photonic crystal (d-1DPC) is theoretically investigated. The study shows that the strong interference effect decreases photon density in particular areas of the microcavity. The d-1DPC can reduce light absorption of monolayer MoS$_{2}$ and enhance light transmission. The impact of monolayer MoS$_{2}$ light absorption on the localization effect of photon is investigated when monolayer MoS$_{2}$ and the organic light-emitting diode are located in the same microcavity. However, monolayer MoS$_{2}$ does not reduce the localization effect of light by regulating the position of monolayer MoS$_{2}$ in the microcavity.

  6. Lead Ref Project Title Institution NE/I001794/1 Dr C Wilson The structure and stability of transport and mixing barriers

    E-Print Network [OSTI]

    adjoints: how much do we really know about the source of the Indian Ocean Tsunami? NE/I001395/1 Dr R Hager of genome-environment interactions for host- parasite evolution NE/I001816/1 Dr J Biggs Active Development for the evolution of mid-ocean ridge basalt NE/I002030/1 Dr DM Scantlebury Energetics of a super

  7. $^{22}Ne$ a primary source of neutron for the s-process and a major neutron poison in CEMP AGB stars

    E-Print Network [OSTI]

    Gallino, R; Husti, L; Kppeler, F; Cristallo, S; Straniero, O

    2006-01-01T23:59:59.000Z

    $^{22}Ne$ a primary source of neutron for the s-process and a major neutron poison in CEMP AGB stars

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

    E-Print Network [OSTI]

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

    2008-11-11T23:59:59.000Z

    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.

  9. Effects of rhenium alloying on the microstructures and mechanical properties of directionally solidified NiAl-Mo eutectic alloy

    SciTech Connect (OSTI)

    Misra, A.; Wu, Z.L.; Gibala, R. [Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Materials Science and Engineering

    1997-12-31T23:59:59.000Z

    Low ductility of the reinforcing bcc metal phase at room temperature and weak interfaces can limit the intrinsic toughness and ductility of NiAl-bcc metal eutectic composites. The potential of rhenium (Re) addition, which is known to solid solution soften and lower the ductile-to-brittle transition temperature of various bcc metals, to enhance the ductility and toughness of a directionally solidified NiAl-9 at.% Mo eutectic alloy was investigated. Re partitioned to the bcc metal phase and formed a substitutional solid solution. The interface morphology was changed from a faceted to a non-faceted one. Re alloying caused softening of the Mo fibers, and as a result NiAl-Mo(Re) alloys were softer in compression and flexure and had {approximately}20% higher fracture toughness values as compared to the transverse orientation toughness of NiAl-9Mo alloy. The toughness of the NiAl-Mo(Re) alloys was lower than the longitudinal orientation toughness of the NiAl-9Mo alloy due to the poor alignment of the Mo(Re) phase with the growth direction. The toughening mechanisms have been evaluated and schemes for processing NiAl-Mo(Re) alloys for higher toughness in the longitudinal orientation are suggested. The role of the residual interstitial impurities and partitioning of Ni and Al to Mo fibers on the mechanical properties are highlighted.

  10. Method for the production of {sup 99m}Tc compositions from {sup 99}Mo-containing materials

    DOE Patents [OSTI]

    Bennett, R.G.; Christian, J.D.; Grover, S.B.; Petti, D.A.; Terry, W.K.; Yoon, W.Y.

    1998-09-01T23:59:59.000Z

    An improved method is described for producing {sup 99m}Tc compositions from {sup 99}Mo compounds. {sup 100}Mo metal or {sup 100}MoO{sub 3} is irradiated with photons in a particle (electron) accelerator to ultimately produce {sup 99}MoO{sub 3}. This composition is then heated in a reaction chamber to form a pool of molten {sup 99}MoO{sub 3} with an optimum depth of 0.5--5 mm. A gaseous mixture thereafter evolves from the molten {sup 99}MoO{sub 3} which contains vaporized {sup 99}MoO{sub 3}, vaporized {sup 99m}TcO{sub 3}, and vaporized {sup 99m}TcO{sub 2}. This mixture is then combined with an oxidizing gas (O{sub 2(g)}) to generate a gaseous stream containing vaporized {sup 99m}Tc{sub 2}O{sub 7} and vaporized {sup 99}MoO{sub 3}. Next, the gaseous stream is cooled in a primary condensation stage in the reaction chamber to remove vaporized {sup 99}MoO{sub 3}. Cooling is undertaken at a specially-controlled rate to achieve maximum separation efficiency. The gaseous stream is then cooled in a sequential secondary condensation stage to convert vaporized {sup 99m}Tc{sub 2}O{sub 7} into a condensed {sup 99m}Tc-containing reaction product which is collected. 1 fig.

  11. Method for the production of .sup.99m Tc compositions from .sup.99 Mo-containing materials

    DOE Patents [OSTI]

    Bennett, Ralph G. (Idaho Falls, ID); Christian, Jerry D. (Idaho Falls, ID); Grover, S. Blaine (Idaho Falls, ID); Petti, David A. (Idaho Falls, ID); Terry, William K. (Idaho Falls, ID); Yoon, Woo Y. (Idaho Falls, ID)

    1998-01-01T23:59:59.000Z

    An improved method for producing .sup.99m Tc compositions from .sup.99 Mo compounds. .sup.100 Mo metal or .sup.100 MoO.sub.3 is irradiated with photons in a particle (electron) accelerator to ultimately produce .sup.99 MoO.sub.3. This composition is then heated in a reaction chamber to form a pool of molten .sup.99 MoO.sub.3 with an optimum depth of 0.5-5 mm. A gaseous mixture thereafter evolves from the molten .sup.99 MoO.sub.3 which contains vaporized .sup.99 MoO.sub.3, vaporized .sup.99m TcO.sub.3, and vaporized .sup.99m TcO.sub.2. This mixture is then combined with an oxidizing gas (O.sub.2(g)) to generate a gaseous stream containing vaporized .sup.99m Tc.sub.2 O.sub.7 and vaporized .sup.99 MoO.sub.3. Next, the gaseous stream is cooled in a primary condensation stage in the reaction chamber to remove vaporized .sup.99 MoO.sub.3. Cooling is undertaken at a specially-controlled rate to achieve maximum separation efficiency. The gaseous stream is then cooled in a sequential secondary condensation stage to convert vaporized .sup.99m Tc.sub.2 O.sub.7 into a condensed .sup.99m Tc-containing reaction product which is collected.

  12. An in situ x-ray spectroscopic study of Mo?{sup +} speciation in supercritical aqueous solutions

    SciTech Connect (OSTI)

    Yan, Hao [Missouri State University, Springfield, MO (United States); Mayanovic, Robert A. [Missouri State University, Springfield, MO (United States); Anderson, Alan J. [St. Francis Xavier Univ., Antigonish, NS (Canada); Meredith, Peter R. [St. Francis Xavier Univ., Antigonish, NS (Canada)

    2011-09-01T23:59:59.000Z

    In situ XRF and Mo K-edge XAS measurements were made on the ID20-B beam line at the APS on MoO? in 1 M H?O? aqueous solution, at temperatures between 400 and 600 C. The samples were analyzed using a modified Bassett-type hydrothermal diamond anvil cell. Our XRF measurements show that MoO? is highly soluble in the supercritical H?O? aqueous fluid. Analysis of XAS spectra shows that the Mo?{sup +} ion exhibits consistent speciation in the H?O? aqueous solution at temperatures ranging from 400 to 600 C.

  13. Mechanical properties of MoS2/graphene heterostructures Jin-Wu Jiang and Harold S. Park

    E-Print Network [OSTI]

    of the heterostructure is considerably smaller than the MoS2 due to lateral buckling of the outer graphene layers owning

  14. arXiv:0904.0927v1[math.AG]6Apr2009 CALCULATING THE PARABOLIC CHERN CHARACTER OF A

    E-Print Network [OSTI]

    Simpson, Carlos

    characters chP ar 1 (E), chP ar 2 (E) and chP ar 3 (E). The basic idea is to use the formula given in [IS2

  15. Elementary Steps of Syngas Reactions on Mo2C(001): Adsorption Thermochemistry and Bond Dissociation

    SciTech Connect (OSTI)

    Medford, Andrew

    2012-02-16T23:59:59.000Z

    Density functional theory (DFT) and ab initio thermodynamics are applied in order to investigate the most stable surface and subsurface terminations of Mo{sub 2}C(001) as a function of chemical potential and in the presence of syngas. The Mo-terminated (001) surface is then used as a model surface to evaluate the thermochemistry and energetic barriers for key elementary steps in syngas reactions. Adsorption energy scaling relations and Broensted-Evans-Polanyi relationships are established and used to place Mo{sub 2}C into the context of transition metal surfaces. The results indicate that the surface termination is a complex function of reaction conditions and kinetics. It is predicted that the surface will be covered by either C{sub 2}H{sub 2} or O depending on conditions. Comparisons to transition metals indicate that the Mo-terminated Mo{sub 2}C(001) surface exhibits carbon reactivity similar to transition metals such as Ru and Ir, but is significantly more reactive towards oxygen.

  16. TEM Characterization of High Burn-up Microstructure of U-7Mo Alloy

    SciTech Connect (OSTI)

    Jian Gan; Brandon Miller; Dennis Keiser; Adam Robinson; James Madden; Pavel Medvedev; Daniel Wachs

    2014-04-01T23:59:59.000Z

    As an essential part of global nuclear non-proliferation effort, the RERTR program is developing low enriched U-Mo fuels (< 20% U-235) for use in research and test reactors that currently employ highly enriched uranium fuels. One type of fuel being developed is a dispersion fuel plate comprised of U-7Mo particles dispersed in Al alloy matrix. Recent TEM characterizations of the ATR irradiated U-7Mo dispersion fuel plates include the samples with a local fission densities of 4.5, 5.2, 5.6 and 6.3 E+21 fissions/cm3 and irradiation temperatures of 101-136?C. The development of the irradiated microstructure of the U-7Mo fuel particles consists of fission gas bubble superlattice, large gas bubbles, solid fission product precipitates and their association to the large gas bubbles, grain subdivision to tens or hundreds of nanometer size, collapse of bubble superlattice, and amorphisation. This presentation will describe the observed microstructures specifically focusing on the U-7Mo fuel particles. The impact of the observed microstructure on the fuel performance and the comparison of the relevant features with that of the high burn-up UO2 fuels will be discussed.

  17. Beta. -MoO sub 3 produced from a novel freeze drying route

    SciTech Connect (OSTI)

    Parise, J.B. (State Univ. of New York, Stony Brook (United States)); McCarron, E.M. III (E.I. Dupont de Nemours and Co., Inc., Wilmington, DE (United States)); Von Dreele, R.; Goldstone, J.A. (Los Alamos National Lab., NM (United States))

    1991-07-01T23:59:59.000Z

    Powdered samples of {beta}-MoO{sub 3} have been produced by the gentle heat treatment of freeze-dried molybdic acid at 350{degree}C for 1 hr. The samples, yellow-green in appearance, contained varying amounts of the thermodynamically stable {alpha}-MoO{sub 3}, depending upon the time and temperature of heat treatment. Neutron diffraction data were collected at 300 K. all peaks, not attributable to {alpha}-MoO{sub 3}, were indexed on the basis of a monoclinic cell, P2{sub 1}/c, {alpha} = 7.1228(7), b = 5.3660(6), c = 5.5665(6), {beta} = 92.01(1){degree}, V = 212.62(6){angstrom}{sup 3}. The structure, which is related to ReO{sub 3}, contains two crystallographically independent octahedra. Both show evidence of disorder at the Mo and O sites. Two distinct orientations of a short mo-O distance, suggestive of the type of molybdenyl bond observed in both the {alpha} and {beta}{prime}-forms, are primarily responsible for the observed disordering.

  18. Oxidation and creep behavior of Mo*5*Si*3* based materials

    SciTech Connect (OSTI)

    Meyer, M.

    1995-06-19T23:59:59.000Z

    Mo{sub 5}Si{sub 3} shows promise as a high temperature creep resistant material. The high temperature oxidation resistance of Mo{sub 5}Si{sub 3} has been found to be poor, however, limiting its use in oxidizing atmospheres. Undoped Mo{sub 5}Si{sub 3} exhibits mass loss in the temperature range 800{degrees}-1200{degrees}C due to volatilization of molybdenum oxide, indicating that the silica scale does not provide a passivating layer. The addition of boron results in protective scale formation and parabolic oxidation kinetics in the temperature range of 1050{degrees}-1300{degrees}C. The oxidation rate of Mo{sub 5}Si{sub 3} was decreased by 5 orders of magnitude at 1200{degrees}C by doping with less than two weight percent boron. Boron doping eliminates catastrophic {open_quote}pest{close_quote} oxidation at 800{degrees}C. The mechanism for improved oxidation resistance of boron doped Mo{sub 5}Si{sub 3} is due to scale modification by boron.

  19. Liquid generation during sintering of Fe-3.5%Mo powder compacts with elemental boron additions

    SciTech Connect (OSTI)

    Sarasola, M.; Gomez-Acebo, T.; Castro, F

    2004-09-06T23:59:59.000Z

    The mechanisms for liquid generation and the microstructural development during sintering of a Fe-3.5Mo-0.3B alloy were studied. Interrupted sintering experiments followed by water quenching from specific temperatures within the sintering cycle have been carried out. The influence of Mo, both, on the final microstructure and on the behaviour of boron prior to, during and after the formation of the liquid phase, was studied through observation of the quenched samples under LOM and SEM. The study shows that prior to the formation of the liquid phase, boron diffuses into the metallic particles forming inter and intragranular precipitates of the (Fe,Mo){sub 2}B type. At higher temperatures a continuous Fe/Mo/B liquid phase, with excellent wetting characteristics, is formed thus leading to near fully dense materials. The generation of the liquid is based on a eutectic reaction involving the mixed (Fe,Mo){sub 2}B borides previously formed. The development of the microstructure after liquid formation is described.

  20. Very-high-order harmonic generation from Ar atoms and Ar+ ions in superintense pulsed laser fields: An ab initio self-interaction-free time-dependent density-functional approach

    E-Print Network [OSTI]

    Carrera, Juan J.; Chu, Shih-I; Tong, Xiao-Min

    2005-06-21T23:59:59.000Z

    We present an ab initio nonpertubative investigation of the mechanisms responsible for the production of very-high-order harmonic generation (HHG) from Ar atoms and Ar+ ions by means of the self-interaction-free time-dependent density...

  1. Wave packet and statistical quantum calculations for the He + NeH{sup +} ? HeH{sup +} + Ne reaction on the ground electronic state

    SciTech Connect (OSTI)

    Koner, Debasish; Panda, Aditya N., E-mail: adi07@iitg.ernet.in [Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039 (India); Barrios, Lizandra; Gonzlez-Lezana, Toms, E-mail: t.gonzalez.lezana@csic.es [Instituto de Fsica Fundamental, C.S.I.C., Serrano 123, Madrid 28006 (Spain)

    2014-09-21T23:59:59.000Z

    A real wave packet based time-dependent method and a statistical quantum method have been used to study the He + NeH{sup +} (v, j) reaction with the reactant in various ro-vibrational states, on a recently calculated ab initio ground state potential energy surface. Both the wave packet and statistical quantum calculations were carried out within the centrifugal sudden approximation as well as using the exact Hamiltonian. Quantum reaction probabilities exhibit dense oscillatory pattern for smaller total angular momentum values, which is a signature of resonances in a complex forming mechanism for the title reaction. Significant differences, found between exact and approximate quantum reaction cross sections, highlight the importance of inclusion of Coriolis coupling in the calculations. Statistical results are in fairly good agreement with the exact quantum results, for ground ro-vibrational states of the reactant. Vibrational excitation greatly enhances the reaction cross sections, whereas rotational excitation has relatively small effect on the reaction. The nature of the reaction cross section curves is dependent on the initial vibrational state of the reactant and is typical of a late barrier type potential energy profile.

  2. Search for a Direct Large-Cluster-Transfer Process in the C-12,c-13(ne-20,a) Reaction

    E-Print Network [OSTI]

    Murakami, T.; Takahashi, N.; Lui, YW; Takada, E.; Tanner, D. M.; Tribble, Robert E.; Ungricht, E.; Nagatani, K.

    1985-01-01T23:59:59.000Z

    2.0 1.5 I I x&Q I I I I I "c("Ne,n) K~=140.2 MeV (g 1.0 0.0 1.5 o 1.0 W 0. 8 /tg C I V=~ ~&~&+. x&Q c( Nen) K~=140.8 hf:eV HE=4' (c) ~ 0.0 b 1.5 1.0 I, I I I .Io "c("Ne,a) K~=1,19.6 hf:eV 8~b=8.75' the molecular...Si) =35.3-39.4 MeV] (Ref. 18) and 16O(I2C sBe) Ne(g s ) [E ( Si) =28.2-35.2 MeV] (Ref. 19) reactions using arbitrary units. Present address: Nuclear Physics Laboratory, University of Washington, Seattle, WA 98195. 'tPresent address: Sumitomo Heavy...

  3. Asymptotic Inference for AR Models with Heavy-tailed G-GARCH Noises

    E-Print Network [OSTI]

    Ling, Shiqing

    Asymptotic Inference for AR Models with Heavy-tailed G-GARCH Noises Rongmao Zhang Department-tailed G-GARCH(1,1) noises. When the tail index of G-GARCH is within (0, 2), it is shown that the LSE and finance. Keywords: AR model, G-GARCH, heavy-tailed and stable processes 1 #12;1 Introduction Since

  4. The Caribbean Low-Level Jet and Its Relationship with Precipitation in IPCC AR4 Models

    E-Print Network [OSTI]

    Martin, Elinor R.

    The Caribbean Low-Level Jet and Its Relationship with Precipitation in IPCC AR4 Models ELINOR R Report (AR4) shows that all models have the ability to simulate the location and height of the Caribbean Caribbean and, hence, an overly strong CLLJ. The ability of the models to simulate the correlation between

  5. Le magn)sme ar)ficiel pour les gaz d'atomes froids Jean Dalibard

    E-Print Network [OSTI]

    Dalibard, Jean

    Le magné)sme ar)ficiel pour les gaz d'atomes froids Jean Dalibard Année 2013-14 Chaire Atomes et rayonnement Magné8sme ar8ficiel pour un atome isolé (I) #12;Simula8on du magné8sme avec des atomes neutres Le but : réaliser pour

  6. Active species downstream of an ArO surface-wave microwave discharge for biomedicine,

    E-Print Network [OSTI]

    Guerra, Vasco

    Active species downstream of an ArO 2 surface-wave microwave discharge for biomedicine, surface.1088/0963-0252/20/3/035006 Active species downstream of an ArO2 surface-wave microwave discharge for biomedicine, surface treatment in a 0.5 cm diameter tube at pressures between 1 and 12 mbar. The early afterglow that occurs downstream

  7. Integrating 40 Ar, U-Pb, and astronomical clocks in the

    E-Print Network [OSTI]

    Meyers, Stephen R.

    956 Integrating 40 Ar/39 Ar, U-Pb, and astronomical clocks in the Cretaceous Niobrara Formation, British Geological Survey, Keyworth NG12 5GG, UK 6 U.S. Geological Survey, MS 980, Denver, Colorado 80225 radioiso- topic data with the floating astrochronology for the Niobrara Formation. The ages are determined

  8. Multiproperty empirical interatomic potentials for ArXe and KrXe

    SciTech Connect (OSTI)

    Pack, R.T; Valentini, J.J.; Becker, C.H.; Buss, R.J.; Lee, Y.T.

    1982-12-01T23:59:59.000Z

    Crossed molecular beam measurements of elastic differential cross sections (DCS) for the scattering of Ar and Kr by Xe are reported. Empirical multiparameter M3SV interatomic potentials for the ArXe and KrXe interactions are determined by simultaneously fitting the DCS, the viscosities, and virial coefficients; the results are the most accurate potentials yet reported for these systems.

  9. Ar geochronology and structural data from the giant Okavango and related mac dyke swarms,

    E-Print Network [OSTI]

    Dyment, Jrme

    N110 dyke swarm known as the Okavango giant dyke swarm (ODS/N110) and a second smaller set of N70 dolerites of the giant ODS/N110 and the SLDS/N70 in NE Botswana yield plateau ages between 179.6 1-Ti (north) mafic rocks. Structural measurements on the ODS/N110 and SLDS/N70 Karoo dykes of NE Botswana

  10. Neutrino-induced pion production at energies relevant for the MiniBooNE and K2K experiments

    SciTech Connect (OSTI)

    Leitner, T.; Buss, O.; Mosel, U. [Institut fuer Theoretische Physik, Universitaet Giessen, Heinrich-Buff-Ring 16, D-35392 Giessen (Germany); Alvarez-Ruso, L. [Departamento de Fisica, Universidad de Murcia, E-30100 Murcia (Spain)

    2009-03-15T23:59:59.000Z

    We investigate charged and neutral current neutrino induced incoherent pion production off nuclei at MiniBooNE and K2K energies within the GiBUU model. We assume impulse approximation and treat the nucleus as a local Fermi gas of nucleons bound in a mean-field potential. In-medium spectral functions are also taken into account. The outcome of the initial neutrino nucleon reaction undergoes complex hadronic final state interactions. We present results for neutral current {pi}{sup 0} and charged current {pi}{sup +} production and compare to MiniBooNE and K2K data.

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

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdf Jump to:ar-80m.pdf Jump to:Originalfaq.pdfFinal.pdf

  12. Atomistic full-band simulations of monolayer MoS{sub 2} transistors

    SciTech Connect (OSTI)

    Chang, Jiwon; Register, Leonard F.; Banerjee, Sanjay K. [Microelectronics Research Center, The University of Texas at Austin, Austin, Texas 78758 (United States)] [Microelectronics Research Center, The University of Texas at Austin, Austin, Texas 78758 (United States)

    2013-11-25T23:59:59.000Z

    We study the transport properties of deeply scaled monolayer MoS{sub 2} n-channel metal-oxide-semiconductor field effect transistors (MOSFETs), using full-band ballistic quantum transport simulations, with an atomistic tight-binding Hamiltonian obtained from density functional theory. Our simulations suggest that monolayer MoS{sub 2} MOSFETs can provide near-ideal subthreshold slope, suppression of drain-induced barrier lowering, and gate-induced drain leakage. However, these full-band simulations exhibit limited transconductance. These ballistic simulations also exhibit negative differential resistance (NDR) in the output characteristics associated with the narrow width in energy of the lowest conduction band, but this NDR may be substantially reduced or eliminated by scattering in MoS{sub 2}.

  13. Highly conducting SrMoO{sub 3} thin films for microwave applications

    SciTech Connect (OSTI)

    Radetinac, Aldin, E-mail: aldin@oxide.tu-darmstadt.de; Mani, Arzhang; Ziegler, Jrgen; Alff, Lambert; Komissinskiy, Philipp, E-mail: komissinskiy@oxide.tu-darmstadt.de [Institute of Materials Science, TU Darmstadt, Alarich-Weiss-Str. 2, 64287 Darmstadt (Germany); Melnyk, Sergiy; Nikfalazar, Mohammad; Zheng, Yuliang; Jakoby, Rolf [Institute for Microwave Engineering and Photonics, TU Darmstadt, Merckstrae 25, 64283 Darmstadt (Germany)

    2014-09-15T23:59:59.000Z

    We have measured the microwave resistance of highly conducting perovskite oxide SrMoO{sub 3} thin film coplanar waveguides. The epitaxial SrMoO{sub 3} thin films were grown by pulsed laser deposition and showed low mosaicity and smooth surfaces with a root mean square roughness below 0.3?nm. Layer-by-layer growth could be achieved for film thicknesses up to 400?nm as monitored by reflection high-energy electron diffraction and confirmed by X-ray diffraction. We obtained a constant microwave resistivity of 29???cm between 0.1 and 20?GHz by refining the frequency dependence of the transmission coefficients. Our result shows that SrMoO{sub 3} is a viable candidate as a highly conducting electrode material for all-oxide microwave electronic devices.

  14. Time exposure performance of Mo-Au Gibbsian segregating alloys for extreme ultraviolet collector optics

    SciTech Connect (OSTI)

    Qiu Huatan; Srivastava, Shailendra N.; Thompson, Keith C.; Neumann, Martin J.; Ruzic, David N

    2008-05-01T23:59:59.000Z

    Successful implementation of extreme ultraviolet (EUV) lithography depends on research and progress toward minimizing collector optics degradation from intense plasma erosion and debris deposition. Thus studying the surface degradation process and implementing innovative methods, which could enhance the surface chemistry causing the mirrors to suffer less damage, is crucial for this technology development. A Mo-Au Gibbsian segregation (GS) alloy is deposited on Si using a dc dual-magnetron cosputtering system and the damage is investigated as a result of time dependent exposure in an EUV source. A thin Au segregating layer is maintained through segregation during exposure, even though overall erosion in the Mo-Au sample is taking place in the bulk. The reflective material, Mo, underneath the segregating layer is protected by this sacrificial layer, which is lost due to preferential sputtering. In addition to theoretical work, experimental results are presented on the effectiveness of the GS alloys to be used as potential EUV collector optics material.

  15. Dual Feedback Controlled High Performance Ar Seeded ELMy H-mode Discharges in JET including Trace Tritium Experiments

    E-Print Network [OSTI]

    Dual Feedback Controlled High Performance Ar Seeded ELMy H-mode Discharges in JET including Trace Tritium Experiments

  16. Simulation of MGI Efficiency for Plasma Energy Conversion into Ar Radiation in JET and Implications for ITER

    E-Print Network [OSTI]

    Simulation of MGI Efficiency for Plasma Energy Conversion into Ar Radiation in JET and Implications for ITER

  17. Neutrino-nucleus scattering of {sup 95,97}Mo and {sup 116}Cd

    SciTech Connect (OSTI)

    Ydrefors, E. [Royal Institute of Technology (KTH), Alba Nova University Center, SE-10691 Stockholm, Sweden and Department of Physics, P.O. Box 35 (YFL), FI-40014 University of Jyvskyl (Finland); Almosly, W.; Suhonen, J. [Department of Physics, P.O. Box 35 (YFL), FI-40014 University of Jyvskyl (Finland)

    2013-12-30T23:59:59.000Z

    Accurate knowledge about the nuclear responses to supernova neutrinos for relevant nuclear targets is important both for neutrino detection and for astrophysical applications. In this paper we discuss the cross sections for the charged-current neutrino-nucleus scatterings off {sup 95,97}Mo and {sup 116}Cd. The microscopic quasiparticle-phonon model is adopted for the odd-even nuclei {sup 95,97}Mo. In the case of {sup 116}Cd we present cross sections both for the Bonn one-boson-exchange potential and self-consistent calculations based on modern Skyrme interactions.

  18. Characterization of metal contacts for two-dimensional MoS{sub 2} nanoflakes

    SciTech Connect (OSTI)

    Walia, Sumeet, E-mail: madhu.bhaskaran@rmit.edu.au, E-mail: kourosh.kalantar@rmit.edu.au, E-mail: sumeet.walia@rmit.edu.au; Balendhran, Sivacarendran; Sriram, Sharath; Bhaskaran, Madhu, E-mail: madhu.bhaskaran@rmit.edu.au, E-mail: kourosh.kalantar@rmit.edu.au, E-mail: sumeet.walia@rmit.edu.au [Functional Materials and Microsystems Research Group, RMIT University, Melbourne, Victoria 3000 (Australia) [Functional Materials and Microsystems Research Group, RMIT University, Melbourne, Victoria 3000 (Australia); School of Electrical and Computer Engineering, RMIT University, Melbourne, Victoria 3000 (Australia); Wang, Yichao; Ab Kadir, Rosmalini; Sabirin Zoolfakar, Ahmad; Atkin, Paul; Zhen Ou, Jian; Kalantar-zadeh, Kourosh, E-mail: madhu.bhaskaran@rmit.edu.au, E-mail: kourosh.kalantar@rmit.edu.au, E-mail: sumeet.walia@rmit.edu.au [School of Electrical and Computer Engineering, RMIT University, Melbourne, Victoria 3000 (Australia)] [School of Electrical and Computer Engineering, RMIT University, Melbourne, Victoria 3000 (Australia)

    2013-12-02T23:59:59.000Z

    While layered materials are increasingly investigated for their potential in nanoelectronics, their functionality and efficiency depend on charge injection into the materials via metallic contacts. This work explores the characteristics of different metals (aluminium, tungsten, gold, and platinum) deposited on to nanostructured thin films made of two-dimensional (2D) MoS{sub 2} flakes. Metals are chosen based on their work functions relative to the electron affinity of MoS{sub 2}. It is observed, and analytically verified that lower work functions of the contact metals lead to smaller Schottky barrier heights and consequently higher charge carrier injection through the contacts.

  19. Evolution of level density step structures from 56,57-Fe to 96,97-Mo

    E-Print Network [OSTI]

    A. Schiller; E. Tavukcu; L. A. Bernstein; P. E. Garrett; M. Guttormsen; M. Hjorth-Jensen; C. W. Johnson; G. E. Mitchell; J. Rekstad; S. Siem; A. Voinov; W. Younes

    2003-02-24T23:59:59.000Z

    Level densities have been extracted from primary gamma spectra for 56,57-Fe and 96,97-Mo nuclei using (3-He,alpha gamma) and (3-He,3-He') reactions on 57-Fe and 97-Mo targets. The level density curves reveal step structures above the pairing gap due to the breaking of nucleon Cooper pairs. The location of the step structures in energy and their shapes arise from the interplay between single-particle energies and seniority-conserving and seniority-non-conserving interactions.

  20. LSND and MiniBooNE within (3+1) plus NSI

    SciTech Connect (OSTI)

    Akhmedov, Evgeny; Schwetz, Thomas [Max-Planck-Institute for Nuclear Physics, PO Box 103980, 69029 Heidelberg (Germany)

    2011-10-06T23:59:59.000Z

    The recently observed event excess in MiniBooNE anti-neutrino data is in agreement with the LSND evidence for electron anti-neutrino appearance. We propose an explanation of these data in terms of a (3+1) scheme with a sterile neutrino including non-standard neutrino interactions (NSI) at neutrino production and detection. The interference between oscillations and NSI provides a source for CP violation which we use to reconcile different results from neutrino and anti-neutrino data. Our best fit results imply NSI at the level of a few percent relative to the standard weak interaction, in agreement with current bounds. We compare the quality of the NSI fit to the one obtained within the (3+1) and (3+2) pure oscillation frameworks.

  1. An improved Neutrino Oscillations Analysis of the MiniBooNE Data

    SciTech Connect (OSTI)

    Aguilar-Arevalo, Alexis Armando; /Columbia U.

    2008-01-01T23:59:59.000Z

    We calculate the exclusion region in the parameter space of {nu}{sub {mu}} {yields} {nu}{sub e} oscillations of the LSND type using a combined fit to the reconstructed energy distributions of neutrino candidate samples from the MiniBooNE data obtained with two different particle identification methods. The two {nu}{sub e} candidate samples are included together with a high statistics sample of {nu}{sub {mu}} events in the definition of a {chi}{sup 2} statistic which includes the correlations between the energy intervals of all three samples and handles the event overlap between the {nu}{sub e} samples. The {nu}{sub {mu}} sample is introduced to constrain the effect of systematic uncertainties. This analysis increases the exclusion limit in the region {Delta}m{sup 2} {approx}< 1eV{sup 2} when compared with the result previously published by the collaboration, which used a different technique.

  2. Studies of the $?$ meson with WASA at COSY and KLOE-2 at DA$?$NE

    E-Print Network [OSTI]

    P. Moskal

    2011-02-27T23:59:59.000Z

    One of the basic motivations of the KLOE-2 and WASA-at-COSY experiments is the test of fundamental symmetries and the search for phenomena beyond the Standard Model in the hadronic and leptonic decays of ground-state mesons and in particular in decays of the $\\eta$ meson. At COSY these mesons are produced in collisions of proton or deuteron beam with hydrogen or deuterium pellet target, and at DA$\\Phi$NE $\\eta$ mesons originate from radiative decays of $\\phi$ meson or from the fusion of virtual gamma quanta exchanged between colliding electrons and positrons. This contribution includes brief description of experimental techniques used by KLOE-2 and WASA-at-COSY as well as some of physics aspects motivating investigations of production and decays of $\\eta$ mesons.

  3. Deep sea tests of a prototype of the KM3NeT digital optical module

    E-Print Network [OSTI]

    Adrin-Martnez, S; Aharonian, F; Aiello, S; Albert, A; Ameli, F; Anassontzis, E G; Anghinolfi, M; Anton, G; Anvar, S; Ardid, M; de Asmundis, R; Band, H; Barbarino, G; Barbarito, E; Barbato, F; Baret, B; Baron, S; Belias, A; Berbee, E; Berg, A M van den; Berkien, A; Bertin, V; Beurthey, S; van Beveren, V; Beverini, N; Biagi, S; Bianucci, S; Billault, M; Birbas, A; Rookhuizen, H Boer; Bormuth, R; Bouche, V; Bouhadef, B; Bourlis, G; Bouwhuis, M; Bozza, C; Bruijn, R; Brunner, J; Cacopardo, G; Caillat, L; Calamai, M; Calvo, D; Capone, A; Caramete, L; Caruso, F; Cecchini, S; Ceres, A; Cereseto, R; Champion, C; Chateau, F; Chiarusi, T; Christopoulou, B; Circella, M; Classen, L; Cocimano, R; Colonges, S; Coniglione, R; Cosquer, A; Costa, M; Coyle, P; Creusot, A; Curtil, C; Cuttone, G; D'Amato, C; D'Amico, A; De Bonis, G; De Rosa, G; Deniskina, N; Destelle, J -J; Distefano, C; Donzaud, C; Dornic, D; Dorosti-Hasankiadeh, Q; Drakopoulou7, E; Drouhin, D; Drury, L; Durand, D; Eberl, T; Eleftheriadis, C; Elsaesser, D; Enzenhofer, A; Fermani, P; Fusco, L A; Gajana, D; Gal, T; Galata, S; Gallo, F; Garufi, F; Gebyehu, M; Giordano, V; Gizani, N; Ruiz, R Gracia; Graf, K; Grasso, R; Grella, G; Grmek, A; Habel, R; van Haren, H; Heid, T; Heijboer, A; Heine, E; Henry, S; Hernandez-Rey, J J; Herold, B; Hevinga, M A; van der Hoek, M; Hofestadt, J; Hogenbirk, J; Hugon, C; Hosl, J; Imbesi, M; James, C; Jansweijer, P; Jochum, J; de Jong, M; Kadler, M; Kalekin, O; Kappes, A; Kappos, E; Katz, U; Kavatsyuk, O; Keller, P; Kieft, G; Koffeman, E; Kok, H; Kooijman, P; Koopstra, J; Korporaal, A; Kouchner, A; Koutsoukos, S; Kreykenbohm, I; Kulikovskiy, V; Lahmann, R; Lamare, P; Larosa, G; Lattuada, D; Provost, H Le; Leisos, A; Lenis, D; Leonora, E; Clark, M Lindsey; Liolios, A; Alvarez, C D Llorens; Lohner, H; Presti, D Lo; Louis, F; Maccioni, E; Mannheim, K; Manolopoulos, K; Margiotta, A; Maris, O; Markou, C; Martinez-Mora, J A; Martini, A; Masullo, R; Michael, T; Migliozzi, P; Migneco, E; Miraglia, A; Mollo, C; Mongelli, M; Morganti, M; Mos, S; Moudden, Y; Musico, P; Musumeci, M; Nicolaou, C; Nicolau, C A; Orlando, A; Orzelli, A; Papageorgiou, K; Papaikonomou, A; Papaleo, R; Pavalas, G E; Peek, H; Pellegrino, C; Pellegriti, M G; Perrina, C; Petridou, C; Piattelli, P; Popa, V; Pradier, Th; Priede, M; Puhlhofer, G; Pulvirenti, S; Racca, C; Raffaelli, F; Randazzo, N; Rapidis, P A; Razis, P; Real, D; Resvanis, L; Reubelt, J; Riccobene, G; Rovelli, A; Royon, J; Saldana, M; Samtleben, D F E; Sanguineti, M; Santangelo, A; Sapienza, P; Savvidis, I; Schmelling, J; Schnabel, J; Sedita, M; Seitz, T; Sgura, I; Simeone, F; Siotis, I; Sipala, V; Solazzo, M; Spitaleri, A; Spurio, M; Steijger, J; Stolarczyk, T; Stransky, D; Taiuti, M; Terreni, G; Tezier, D; Theraube, S; Thompson, L F; Timmer, P; Trapierakis, H I; Trasatti, L; Trovato, A; Tselengidou, M; Tsirigotis, A; Tzamarias, S; Tzamariudaki, E; Vallage, B; Van Elewyck, V; Vermeulen, J; Vernin, P; Viola, S; Vivolo, D; Werneke, P; Wiggers, L; Wilms, J; de Wolf, E; van Wooning, R H L; Yatkin, K; Zachariadou, K; Zonca, E; Zornoza, J D; Ziga, J; Zwart, A

    2014-01-01T23:59:59.000Z

    The first prototype of a photo-detection unit of the future KM3NeT neutrino telescope has been deployed in the deep waters of the Mediterranean Sea. This digital optical module has a novel design with a very large photocathode area segmented by the use of 31 three inch photomultiplier tubes. It has been integrated in the ANTARES detector for in-situ testing and validation. This paper reports on the first months of data taking and rate measurements. The analysis results highlight the capabilities of the new module design in terms of background suppression and signal recognition. The directionality of the optical module enables the recognition of multiple Cherenkov photons from the same $^{40}$K decay and the localization bioluminescent activity in the neighbourhood. The single unit can cleanly identify atmospheric muons and provide sensitivity to the muon arrival directions.

  4. 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

  5. Background radioactivity of construction materials, raw substance and ready-made CaMoO4 crystals

    E-Print Network [OSTI]

    Busanov, O A; Gavriljuk, Yu M; Gezhaev, A M; Kazalov, V V; Kornoukhov, V N; Kuzminov, V V; Moseev, P S; Panasenko, S I; Ratkevich, S S; Yakimenko, S P

    2013-01-01T23:59:59.000Z

    The results of measurements of natural radioactive isotopes content in different source materials of natural and enriched composition used for CaMoO4 scintillation crystal growing are presented. The crystals are to be used in the experiment to search for double neutrinoless betas-decay of Mo-100.

  6. Pseudo-elastic deformation behavior in a Ti/Mo-based alloy , M. Aindow a,*, S.P. Alpay a

    E-Print Network [OSTI]

    Alpay, S. Pamir

    , and are increasingly finding applications in aerospace, oil well systems and automotive parts [1]. Alloys in the metaPseudo-elastic deformation behavior in a Ti/Mo-based alloy T. Zhou a , M. Aindow a,*, S.P. Alpay 2003 Abstract It is shown that the pseudo-elastic response in a series of TiMoVNbAl alloys with 8

  7. Solar Energy Materials & Solar Cells 58 (1999) 199}208 The behaviour of Na implanted into Mo thin "lms

    E-Print Network [OSTI]

    Rockett, Angus

    Solar Energy Materials & Solar Cells 58 (1999) 199}208 The behaviour of Na implanted into Mo thin, As ngstro( m Solar Center, P.O. Box 534, SE-751 21 Uppsala, Sweden Department of Materials Science Mo thin "lms used as back contacts for Cu(In,Ga)Se solar cells. The samples were analysed

  8. Ultra-thin Titanium Oxide Films on Accession #s 00936, 00937,00938 Mo(112), Measured by XPS Technique: XPS

    E-Print Network [OSTI]

    Goodman, Wayne

    Ultra-thin Titanium Oxide Films on Accession #s 00936, 00937,00938 Mo(112), Measured by XPS preparation methods were employed to grow a well-ordered ultra-thin titanium oxide film on Mo(J (2), The tirst: photoemission; titanium oxide; tllin film PACS: 81.15.Gh. 79,60.Dp SPECIMEN DESCRIPTION (Accession #00936) Host

  9. Giant Two-Photon Absorption Coefficient and Frequency Up-Converted Luminescence in Monolayer MoS2

    E-Print Network [OSTI]

    Li, Yuanxin; Zhang, Saifeng; Zhang, Xiaoyan; Feng, Yanyan; Wang, Kangpeng; Zhang, Long; Wang, Jun

    2015-01-01T23:59:59.000Z

    Strong two-photon absorption (TPA) in monolayer MoS2 is demonstrated in contrast to saturable absorption (SA) in multilayer MoS2 under the excitation of femtosecond laser pulses in the near infrared region. MoS2 in the forms of monolayer single crystal and multilayer triangular islands are grown on either quartz or SiO2/Si by employing the seeding method through chemistry vapor deposition. The nonlinear transmission measurements reveal that monolayer MoS2 possesses a giant nonsaturation TPA coefficient, larger than that of conventional semiconductors. As a result of TPA, two-photon pumped frequency up-converted luminescence is observed directly in the monolayer MoS2. For the multilayer MoS2, the SA response is demonstrated with the ratio of the excited-state absorption cross section to ground-state cross section of 0.18. In addition, the laser damage threshold of the monolayer MoS2 is 97 GW/cm2, larger than that of the multilayer MoS2 of 78 GW/cm2.

  10. Effective versus ion thermal temperatures in the Weizmann Ne Z-pinch: Modeling and stagnation physics

    SciTech Connect (OSTI)

    Giuliani, J. L.; Thornhill, J. W.; Dasgupta, A.; Velikovich, A. L.; Chong, Y. K.; Mehlhorn, T. A. [Plasma Physics Division, Naval Research Laboratory, Washington, DC 20375 (United States)] [Plasma Physics Division, Naval Research Laboratory, Washington, DC 20375 (United States); Kroupp, E.; Osin, D.; Maron, Y.; Starobinets, A.; Fisher, V.; Zarnitsky, Yu.; Bernshtam, V. [Weizmann Institute of Science, Rehovot 76100 (Israel)] [Weizmann Institute of Science, Rehovot 76100 (Israel); Apruzese, J. P. [Consultant to NRL through Engility Corp., Chantilly, Virginia 20151 (United States)] [Consultant to NRL through Engility Corp., Chantilly, Virginia 20151 (United States); Fisher, A. [Falculty of Physics, Technion-Israeli Institute of Technology, Haifa (Israel)] [Falculty of Physics, Technion-Israeli Institute of Technology, Haifa (Israel); Deeney, C. [National Security Technologies, LLC, Las Vegas, Nevada 89144 (United States)] [National Security Technologies, LLC, Las Vegas, Nevada 89144 (United States)

    2014-03-15T23:59:59.000Z

    The difference between the ion thermal and effective temperatures is investigated through simulations of the Ne gas puff z-pinch reported by Kroupp et al. [Phys. Rev. Lett. 107, 105001 (2011)]. Calculations are performed using a 2D, radiation-magnetohydrodynamic code with Tabular Collisional-Radiative Equilibrium, namely Mach2-TCRE [Thornhill et al., Phys. Plasmas 8, 3480 (2001)]. The extensive data set of imaging and K-shell spectroscopy from the experiments provides a challenging validation test for z-pinch simulations. Synthetic visible images of the implosion phase match the observed large scale structure if the breakdown occurs at the density corresponding to the Paschen minimum. At the beginning of stagnation (?4?ns), computed plasma conditions change rapidly showing a rising electron density and a peak in the ion thermal temperature of ?1.8?keV. This is larger than the ion thermal temperature (<400?eV) inferred from the experiment. By the time of peak K-shell power (0?ns), the calculated electron density is similar to the data and the electron and ion thermal temperatures are equilibrated, as is observed. Effective ion temperatures are obtained from calculated emission line widths accounting for thermal broadening and Doppler velocity shifts. The observed, large effective ion temperatures (?4?keV) early in the stagnation of this Ne pinch can be explained solely as a combination of compressional ion heating and steep radial velocity gradients near the axis. Approximations in the modeling are discussed in regard to the higher ion thermal temperature and lower electron density early in the stagnation compared to the experimental results.

  11. High blue-near ultraviolet photodiode response of vertically stacked graphene-MoS{sub 2}-metal heterostructures

    SciTech Connect (OSTI)

    Wi, Sungjin; Chen, Mikai; Nam, Hongsuk; Liu, Amy C.; Meyhofer, Edgar; Liang, Xiaogan, E-mail: xiaoganl@umich.edu [Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan 48109 (United States)

    2014-06-09T23:59:59.000Z

    We present a study on the photodiode response of vertically stacked graphene/MoS{sub 2}/metal heterostructures in which MoS{sub 2} layers are doped with various plasma species. In comparison with undoped heterostructures, such doped ones exhibit significantly improved quantum efficiencies in both photovoltaic and photoconductive modes. This indicates that plasma-doping-induced built-in potentials play an important role in photocurrent generation. As compared to indium-tin-oxide/ MoS{sub 2}/metal structures, the presented graphene/MoS{sub 2}/metal heterostructures exhibit greatly enhanced quantum efficiencies in the blue-near ultraviolet region, which is attributed to the low density of recombination centers at graphene/MoS{sub 2} heterojunctions. This work advances the knowledge for making photo-response devices based on layered materials.

  12. Single-layer MoS{sub 2} roughness and sliding friction quenching by interaction with atomically flat substrates

    SciTech Connect (OSTI)

    Quereda, J. [Departamento de Fsica de la Materia Condensada, Universidad Autnoma de Madrid, Madrid E-28049 (Spain); Castellanos-Gomez, A. [Kavli Institute of Nanoscience, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft (Netherlands); Agrat, N. [Departamento de Fsica de la Materia Condensada, Universidad Autnoma de Madrid, Madrid E-28049 (Spain); Instituto Madrileo de Estudios Avanzados en Nanociencia, IMDEA-Nanociencia, E-28049 Madrid (Spain); Instituto de Ciencia de Materiales Nicols Cabrera, Campus de Cantoblanco, E-28049 Madrid (Spain); Condensed Matter Physics Center (IFIMAC), Universidad Autnoma de Madrid, E-28049 Madrid (Spain); Rubio-Bollinger, G., E-mail: gabino.rubio@uam.es [Departamento de Fsica de la Materia Condensada, Universidad Autnoma de Madrid, Madrid E-28049 (Spain); Instituto de Ciencia de Materiales Nicols Cabrera, Campus de Cantoblanco, E-28049 Madrid (Spain); Condensed Matter Physics Center (IFIMAC), Universidad Autnoma de Madrid, E-28049 Madrid (Spain)

    2014-08-04T23:59:59.000Z

    We experimentally study the surface roughness and the lateral friction force in single-layer MoS{sub 2} crystals deposited on different substrates: SiO{sub 2}, mica, and hexagonal boron nitride (h-BN). Roughness and sliding friction measurements are performed by atomic force microscopy. We find a strong dependence of the MoS{sub 2} roughness on the underlying substrate material, being h-BN the substrate which better preserves the flatness of the MoS{sub 2} crystal. The lateral friction also lowers as the roughness decreases, and attains its lowest value for MoS{sub 2} flakes on h-BN substrates. However, it is still higher than for the surface of a bulk MoS{sub 2} crystal, which we attribute to the deformation of the flake due to competing tip-to-flake and flake-to-substrate interactions.

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

    E-Print Network [OSTI]

    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

    $\\gamma$-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.

  14. 6 JUNE 2014 VOL 344 ISSUE 6188 1095SCIENCE sciencemag.org ne reason for the use of biofuels is

    E-Print Network [OSTI]

    Napp, Nils

    6 JUNE 2014 VOL 344 ISSUE 6188 1095SCIENCE sciencemag.org O ne reason for the use of biofuels good and bad outcomes, depending on the approach (1). Thus, comments about biofuels in recent reports of indirect land-use change on GHG emissions (5) identified the possibility that biofuels may endan- ger

  15. INELASTIC PROCESSES IN 0.11000 keV/u COLLISIONS OF Ne q+ (q=710) IONS WITH ATOMIC HYDROGEN

    E-Print Network [OSTI]

    4 INELASTIC PROCESSES IN 0.1­1000 keV/u COLLISIONS OF Ne q+ (q=7­10) IONS WITH ATOMIC HYDROGEN D to recycle hydrogen, and how to remove heat from the plasma. Cooling is required both to extract heat to run transfer, hydrogen and impurity radiation, ionization, and elastic collisions between the recycling gas

  16. The Neoproterozoic Keraf Suture in NE Sudan: Sinistral Transpression along the Eastern Margin of West Gondwana1

    E-Print Network [OSTI]

    Stern, Robert J.

    The Neoproterozoic Keraf Suture in NE Sudan: Sinistral Transpression along the Eastern Margin Sudan remains poorly under-2 University of Houston Department of Geosciences, Hous- stood because of its Geological Research Authority of the Sudan, Regional Ge- ology Administration, Box 410, Khartoum, Sudan

  17. GAS AND DUST ABSORPTION IN THE DoAr 24E SYSTEM

    SciTech Connect (OSTI)

    Kruger, Andrew J. [Department of Physical Science, Wilbur Wright College, 4300 North Narragansett Avenue, Chicago, IL 60634 (United States); Richter, Matthew J. [Department of Physics, University of California at Davis, One Shields Avenue, Davis, CA 95616 (United States); Seifahrt, Andreas [Department of Astronomy and Astrophysics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637 (United States); Carr, John S. [Remote Sensing Division, Naval Research Laboratory, Code 7210, Washington, DC 20375 (United States); Najita, Joan R. [National Optical Astronomy Observatory, Tucson, AZ 85719 (United States); Moerchen, Margaret M. [European Southern Observatory, Alonso de Cordova 3107, Santiago (Chile); Doppmann, Greg W. [W.M. Keck Observatory, 65-1120 Mamalahoa Hwy, Kamuela, HI 96743 (United States)

    2012-11-20T23:59:59.000Z

    We present findings for DoAr 24E, a binary system that includes a classical infrared companion. We observed the DoAr 24E system with the Spitzer Infrared Spectrograph (IRS), with high-resolution, near-infrared spectroscopy of CO vibrational transitions, and with mid-infrared imaging. The source of high extinction toward infrared companions has been an item of continuing interest. Here we investigate the disk structure of DoAr 24E using the column densities, temperature, and velocity profiles of two CO absorption features seen toward DoAr 24Eb. We model the spectral energy distributions found using T-ReCS imaging and investigate the likely sources of extinction toward DoAr 24Eb. We find the lack of silicate absorption and small CO column density toward DoAr 24Eb suggest that the mid-infrared continuum is not as extinguished as the near-infrared, possibly due to the mid-infrared originating from an extended region. This, along with the velocity profile of the CO absorption, suggests that the source of high extinction is likely due to a disk or disk wind associated with DoAr 24Eb.

  18. EVALUATING SYSTEMATIC DEPENDENCIES OF TYPE Ia SUPERNOVAE: THE INFLUENCE OF PROGENITOR {sup 22}Ne CONTENT ON DYNAMICS

    SciTech Connect (OSTI)

    Townsley, Dean M. [Department of Astronomy/Steward Observatory, University of Arizona, Tucson, AZ (United States); Jackson, Aaron P.; Calder, Alan C. [Department of Physics and Astronomy, State University of New York - Stony Brook, Stony Brook, NY (United States); Chamulak, David A.; Brown, Edward F. [Department of Physics and Astronomy, Michigan State University, East Lansing, MI (United States); Timmes, F. X. [Joint Institute for Nuclear Astrophysics, Michigan State University, East Lansing, MI 48824 (United States)], E-mail: townsley@as.arizona.edu

    2009-08-20T23:59:59.000Z

    We present a theoretical framework for formal study of systematic effects in supernovae Type Ia (SNe Ia) that utilizes two-dimensional simulations to implement a form of the deflagration-detonation transition (DDT) explosion scenario. The framework is developed from a randomized initial condition that leads to a sample of simulated SNe Ia whose {sup 56}Ni masses have a similar average and range to those observed, and have many other modestly realistic features such as the velocity extent of intermediate-mass elements. The intended purpose is to enable statistically well defined studies of both physical and theoretical parameters of the SNe Ia explosion simulation. We present here a thorough description of the outcome of the SNe Ia explosions produced by our current simulations. A first application of this framework is utilized to study the dependence of the SNe Ia on the {sup 22}Ne content, which is known to be directly influenced by the progenitor stellar population's metallicity. Our study is very specifically tailored to measure how the {sup 22}Ne content influences the competition between the rise of plumes of burned material and the expansion of the star before these plumes reach DDT conditions. This influence arises from the dependence of the energy release, progenitor structure, and laminar flame speed on {sup 22}Ne content. For this study, we explore these three effects for a fixed carbon content and DDT density. By setting the density at which nucleosynthesis takes place during the detonation phase of the explosion, the competition between plume rise and stellar expansion controls the amount of material in nuclear statistical equilibrium (NSE) and therefore {sup 56}Ni produced. Of particular interest is how this influence of {sup 22}Ne content compares to the direct modification of the {sup 56}Ni mass via the inherent neutron excess as discussed by Timmes et al. Although the outcome following from any particular ignition condition can change dramatically with {sup 22}Ne content, with a sample of 20 ignition conditions we find that the systematic change in the expansion of the star prior to detonation is not large enough to compete with the dependence discussed by Timmes et al. In fact, our results show no statistically significant dependence of the predetonation expansion on {sup 22}Ne content, pointing to the morphology of the ignition condition as being the dominant dynamical driver of the {sup 56}Ni yield of the explosion. However, variations in the DDT density, which were specifically excluded here, are also expected to be important and to depend systematically on {sup 22}Ne content.

  19. BBA Electives: M&O Comparison Compiled 11/11/09

    E-Print Network [OSTI]

    Michigan, University of

    University ­ Marriott Organizational Development and Change Teams and Work Groups Human Resource Management Compensation Management Labor Relations and Conflict Management Staffing Organizations Motivation and Work MIT1 BBA Electives: M&O Comparison Compiled 11/11/09 University of Michigan ­ Ross School Management

  20. EIS-0475: Disposition of the Bannister Federal Complex, Kansas City, MO

    Broader source: Energy.gov [DOE]

    NNSA/DOE announces its intent to prepare an EIS for the disposition of the Bannister Federal Complex, Kansas City, MO. NNSA previously decided in a separate NEPA review (EA-1592) to relocate its operations from the Bannister Federal Complex to a newly constructed industrial campus eight miles from the current location.

  1. MoDPepInt: An interactive webserver for prediction of modular domain-peptide interactions

    E-Print Network [OSTI]

    Brendel, Volker

    MoDPepInt: An interactive webserver for prediction of modular domain-peptide interactions-Supervised Prediction of SH2-Peptide Interactions from Imbalanced High-Throughput Data PLoS One, 8(5), pp. e62732, 2013-peptide interaction prediction with an application to human SH3 domains Bioinformatics, 29(13), pp. i335-i343, 2013

  2. On the Higher-Order MoM-PO Electromagnetic Modeling of Vehicles

    E-Print Network [OSTI]

    Notaros, Branislav M.

    vehicles (cars, airplanes, helicopters, spacecraft, etc.). From the electromagnetic point of view and accurate higher-order, large-domain hybrid computational technique based on the method of moments (Mo the efficiency and accuracy of the hybrid higher-order computational technique and its advantages over

  3. Enriched Zn$^{100}$MoO$_4$ scintillating bolometers to search for $0 \

    E-Print Network [OSTI]

    Barabash, A S; Danevich, F A; Giuliani, A; Ivanov, I M; Makarov, E P; Mancuso, M; Marnieros, S; Nasonov, S G; Nones, C; Olivieri, E; Pessina, G; Poda, D V; Shlegel, V N; Tenconi, M; Tretyak, V I; Vasiliev, Ya V; Velazquez, M; Zhdankov, V N

    2014-01-01T23:59:59.000Z

    The LUMINEU project aims at performing a demonstrator underground experiment searching for the neutrinoless double beta decay of the isotope $^{100}$Mo embedded in zinc molybdate (ZnMoO$_4$) scintillating bolometers. In this context, a zinc molybdate crystal boule enriched in $^{100}$Mo to 99.5\\% with a mass of 171 g was grown for the first time by the low-thermal-gradient Czochralski technique. The production cycle provided a high yield (the crystal boule mass was 84\\% of initial charge) and an acceptable level -- around 4\\% -- of irrecoverable losses of the costy enriched material. Two crystals of 59 g and 63 g, obtained from the enriched boule, were tested aboveground at milli-Kelvin temperature as scintillating bolometers. They showed a high detection performance, equivalent to that of previously developed natural ZnMoO$_4$ detectors. These results pave the way to future sensitive searches based on the LUMINEU technology, capable to approach and explore the inverted hierarchy region of the neutrino mass p...

  4. Molecular Adsorption to LiMo3Se3 Nanowire Film Chemiresistors

    E-Print Network [OSTI]

    Chiang, Shirley

    Molecular Adsorption to LiMo3Se3 Nanowire Film Chemiresistors Xiubin Qi, Frank E. Osterloh,*, S. A that the temporal and steady-state resistance changes of the films depend on the time following the adsorption and on the number of molecules that adsorb to the nanowire films at a given pressure. The adsorption ability

  5. Investigation of Double Beta Decay of 100Mo to Excited States of 100Ru

    SciTech Connect (OSTI)

    A. J. Caffrey; The NEMO-3 Collaboration

    2014-05-01T23:59:59.000Z

    Double beta decay of 100Mo to the excited states of daughter nuclei has been studied using a 600 cm3 low-background HPGe detector and an external source consisting of 2588 g of 97.5% enriched metallic 100Mo, which was formerly inside the NEMO-3 detector and used for the NEMO-3 measurements of 100Mo. The half-life for the two-neutrino double beta decay of 100Mo to the excited View the MathML source state in 100Ru is measured to be T1/2=[7.50.6(stat)0.6(syst)]1020 yr. For other (0?+2?) transitions to the View the MathML source, View the MathML source, View the MathML source, View the MathML source and View the MathML source levels in 100Ru, limits are obtained at the level of ~(0.251.1)1022 yr.

  6. Magnetic cluster excitations in the antiferromagnetic phase of a-MnMoO4

    E-Print Network [OSTI]

    Ochsenbein, Stefan T; Chaboussant, Gregory; Sieber, Andreas; Gudel, Hans U; Janssen, Stefan; Furrer, Albert; Attfield, J. Paul

    2003-01-01T23:59:59.000Z

    The tetramer-based compound a-MnMoO4 exhibits four prominent peaks in the inelastic neutron scattering (INS) spectrum between 0.5 and 2.0 meV below 10 K. They are assigned to magnetic excitations of the (Mn2+)4 rhombus ...

  7. Irradiation Performance of U-Mo Alloy Based Monolithic Plate-Type Fuel Design Selection

    SciTech Connect (OSTI)

    A. B. Robinson; G. S. Chang; D. D. Keiser, Jr.; D. M. Wachs; D. L. Porter

    2009-08-01T23:59:59.000Z

    A down-selection process has been applied to the U-Mo fuel alloy based monolithic plate fuel design, supported by irradiation testing of small fuel plates containing various design parameters. The irradiation testing provided data on fuel performance issues such as swelling, fuel-cladding interaction (interdiffusion), blister formation at elevated temperatures, and fuel/cladding bond quality and effectiveness. U-10Mo (wt%) was selected as the fuel alloy of choice, accepting a somewhat lower uranium density for the benefits of phase stability. U-7Mo could be used, with a barrier, where the trade-off for uranium density is critical to nuclear performance. A zirconium foil barrier between fuel and cladding was chosen to provide a predictable, well-bonded, fuel-cladding interface, allowing little or no fuel-cladding interaction. The fuel plate testing conducted to inform this selection was based on the use of U-10Mo foils fabricated by hot co-rolling with a Zr foil. The foils were subsequently bonded to Al-6061 cladding by hot isostatic pressing or friction stir bonding.

  8. Lithium Intercalation in Graphene/MoS2 Composites: First-Principles Insights

    E-Print Network [OSTI]

    Shao, Xiji; Pang, Rui; Shi, Xingqiang

    2015-01-01T23:59:59.000Z

    As a storage material for Li-ion batteries, graphene/molybdenum disulfide (Gr/MoS2) composites have been intensively studied in experiments. But the relevant theoretical works from first-principles are lacking. In the current work, van-der-Waals-corrected density functional theory calculations are performed to investigate the interaction of Li in Gr/MoS2 composites. Three interesting features are revealed for the intercalated Gr/Li(n)/MoS2 composites (n = 1 to 9). One is the reason for large Li storage capacity of Gr/MoS2: due to the binding energies per Li atom increase with the increasing number of intercalated Li atoms. Secondly, the band gap opening of Gr is found, and the band gap is enlarged with the increasing number of intercalated Li atoms, up to 160 meV with nine Li; hence these results suggest an efficient way to tune the band gap of graphene. Thirdly, the Dirac cone of Gr always preserve for different number of ionic bonded Li atoms.

  9. This is MoFo. Scientific/Technical Patent Analysts/Agents

    E-Print Network [OSTI]

    Straight, Aaron

    This is MoFo. Scientific/Technical Patent Analysts/Agents (Los Angeles, CA; McLean, VA; Palo Alto level patent analysts/agents for our Los Angeles, Palo Alto, San Diego and San Francisco offices of business strategies. Patent analysts/agents participate in domestic and foreign patent prosecution

  10. 2008 IEEE Swarm Intelligence Symposium St. Louis MO USA, September 21-23, 2008

    E-Print Network [OSTI]

    Havens, Timothy

    2008 IEEE Swarm Intelligence Symposium St. Louis MO USA, September 21-23, 2008 Roach Infestation of the PSO algorithm, entitled Roach Infestation Optimization (RIO), that is inspired by recent discoveries discoveries in the behavior of cockroaches are the inspiration for our proposed algorithm, Roach Infestation

  11. Safety Analysis Using Coloured Petri Nets Seung Mo Cho, Hyoung Seok Hong, and Sung Deok Cha

    E-Print Network [OSTI]

    as an example. 1. Introduction Software control in safety-critical systems such as aerospace, military, nuclearSafety Analysis Using Coloured Petri Nets Seung Mo Cho, Hyoung Seok Hong, and Sung Deok Cha Department of Computer Science Korea Advanced Institute of Science and Technology (KAIST) 373-1, Kusong

  12. A Network Model and Computational Approach Mo Supply Chain for Nuclear Medicine

    E-Print Network [OSTI]

    Nagurney, Anna

    A Network Model and Computational Approach for the 99 Mo Supply Chain for Nuclear Medicine Ladimer S. Nagurney1 and Anna Nagurney2 1Department of Electrical and Computer Engineering University University of Massachusetts - Amherst, Massachusetts 01003 Fall 2011 Joint Meeting Of The New England

  13. ZnMoO4: a promising bolometer for neutrinoless double beta decay searches

    E-Print Network [OSTI]

    J. W. Beeman; F. Bellini; S. Capelli; L. Cardani; N. Casali; I. Dafinei; S. Di Domizio; F. Ferroni; E. N. Galashov; L. Gironi; F. Orio; L. Pattavina; G. Pessina; G. Piperno; S. Pirro; V. N. Shlegel; Ya. V. Vasilyev; C. Tomei; M. Vignati

    2012-02-01T23:59:59.000Z

    We investigate the performances of two ZnMoO4 scintillating crystals operated as bolometers, in view of a next generation experiment to search the neutrinoless double beta decay of Mo-100. We present the results of the alpha vs beta/gamma discrimination, obtained through the scintillation light as well as through the study of the shape of the thermal signal alone. The discrimination capability obtained at the 2615 keV line of Tl-208 is 8 sigma, using the heat-light scatter plot, while it exceeds 20 sigma using the shape of the thermal pulse alone. The achieved FWHM energy resolution ranges from 2.4 keV (at 238 keV) to 5.7 keV (at 2615 keV). The internal radioactive contaminations of the ZnMoO4 crystals were evaluated through a 407 hours background measurement. The obtained limit is < 32 microBq/kg for Th-228 and Ra-226. These values were used for a Monte Carlo simulation aimed at evaluating the achievable background level of a possible, future array of enriched ZnMoO4 crystals.

  14. Interlayer growth in Mo/B{sub 4}C multilayered structures upon thermal annealing

    SciTech Connect (OSTI)

    Nyabero, S. L.; Kruijs, R. W. E. van de; Yakshin, A. E.; Zoethout, E.; Bosgra, J.; Loch, R. A. [FOM Dutch Institute for Fundamental Energy Research (DIFFER), P.O. Box 1207, 3430 BE Nieuwegein (Netherlands); Blanckenhagen, G. von [Carl Zeiss SMT GmbH, Rudolf-Eber-Strasse 2, 73447 Oberkochen (Germany); Bijkerk, F. [FOM Dutch Institute for Fundamental Energy Research (DIFFER), P.O. Box 1207, 3430 BE Nieuwegein (Netherlands); MESA Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede (Netherlands)

    2013-04-14T23:59:59.000Z

    Both multilayer period thickness expansion and compaction were observed in Mo/B{sub 4}C multilayers upon annealing, and the physical causes for this were explored in detail. Using in situ time-dependent grazing incidence X-ray reflectometry, period changes down to picometer-scale were resolved. It was shown that the changes depend on the thickness of the B{sub 4}C layers, annealing temperature, and annealing time. Although strong stress relaxation during annealing was observed, it was excluded as a cause for period expansion. Auger electron spectroscopy and wide angle X-ray diffraction measurements revealed the growth of interlayers, with associated period changes influenced by the supply of B and C atoms to the growing compound interlayers. For multilayers with a Mo thickness of 3 nm, two regimes were recognized, depending on the deposited B{sub 4}C thickness: in multilayers with B{sub 4}C {<=} 1.5 nm, the supply of additional Mo into the already formed MoB{sub x}C{sub y} interlayer was dominant and led to densification, resulting in period compaction. For multilayers with B{sub 4}C {>=} 2 nm, the B and C enrichment of interlayers formed low density compounds and yielded period expansion.

  15. TURBO EQUALIZATIONWITH AN UNKNOWN CHANNEL SeongwookSong', Andrew C. Singer2,Koeng-MoSun?

    E-Print Network [OSTI]

    Singer, Andrew C

    TURBO EQUALIZATIONWITH AN UNKNOWN CHANNEL SeongwookSong', Andrew C. Singer2,Koeng-MoSun? l t 2Univ the method of turbo equalization originally de- veloped by Douillard, et al. [3]. In its original form, turbo and without training data. The resultingjoint channeland data estimator is shown to outperform standard turbo

  16. TheElectronMicroscopyCore(EMC) UniversityofMissouriColumbia,MO65211

    E-Print Network [OSTI]

    Noble, James S.

    TheElectronMicroscopyCore(EMC) UniversityofMissouriColumbia,MO65211 The. The EMC houses two field emission SEM's, a Hitachi cold-field SEM (S-4700) and a FEI thermal FE SEM imaging and chemical analysis from their SEM/EDS systems. AdditionalSupportby: FormoreInformationortoregistergoto:http://www.emc

  17. RobeRt & LauRie bean taishoff inciting a MoRe incLusive

    E-Print Network [OSTI]

    McConnell, Terry

    RobeRt & LauRie bean taishoff inciting a MoRe incLusive coLLege caMpus syRacuse univeRsity scho. Thanks to her expertise--and the generosity of Robert Taishoff '86 and Laurie Bean Taishoff '84--the

  18. Incremental Development for Automotive Software in AutoMoDe Andreas Bauer1

    E-Print Network [OSTI]

    Braun, Peter

    Incremental Development for Automotive Software in AutoMoDe Andreas Bauer1 Jan Romberg1 Bernhard Validas AG 3 ETAS GmbH 4 PMSF IT Consulting 5 Robert Bosch GmbH Abstract Automotive software development. To facilitate the design and evolution of heterogeneous automotive software, suitable views for each level

  19. Interaction Layer Characteristics in U-xMo Dispersion/Monolithic Fuels

    SciTech Connect (OSTI)

    D. L. Porter

    2010-11-01T23:59:59.000Z

    Published data concerning the interaction layer (IL) formed between U-xMo fuel alloy and aluminum (Al)-based matrix or cladding materials was reviewed, including the effects of silicon (Si) content in the matrix/cladding, molybdenum (Mo) content in the fuel, pre irradiation thermal treatments, irradiation, and test temperature. The review revealed that tests conducted in the laboratory produce results different from those conducted in an irradiation environment. However, the laboratory testing relates well to thermal treatments performed prior to irradiation and helps in understanding the effects that these pre irradiation treatments have on in reactor performance. A pre-formed, Si-enriched IL seems to be important in delaying the onset of rapid growth of fission gas bubbles at low irradaiiation temperatures. Several other conclusions can be drawn: 1. An IL with phases akin to UAl3 is desired for optimum fuel performance, but at low temperatures, and especially in an irradiation atmosphere, the desired (Al+Si)/(U+Mo) ratio of three is difficult to produce. When the fuel operating temperature is low, it is important to create a pre-irradiation IL, enriched in Si. This pre-formed IL is relatively stable, performs well in terms of swelling resistance, and prevents rapid IL growth during irradiation. 2. At higher operating temperatures (>150170C), IL formation in reactor may not be so dependent on pre-irradiation IL formation, especially at high burnup; a pre-fabricated IL seems to be less stable at high burnup and high operating temperature. Moreover, the (Al+SI)/(U+Mo) ratio of three occurs more often at higher temperature. For these two reasons, it is important at high operating temperature to also have a matrix with significant Si content to create an IL in reactor with the right characteristics. 3. Out-of-reactor testing seems to indicate that Si in the matrix material is required in some concentration (2%, 5%, ?) to provide for a thin, Si-enriched IL formed before irradiation of a fuel plate. It ensures that the IL contains beneficial phases, or prevents formation of some known to promote poor fuel performance. Significant progress has been made in determining the desired characteristics of the IL. 4. The use of a fuel with stable gamma phase appears to allow more predictable performance regarding both a beneficial pre-irradiation layer, and the fuel performance (low swelling) to high burnup. Destabilization of the gamma phase may create problems with IL breakaway growth. 5. A theory whereby prevention of the U6Mo4Al43 complex phase in interaction layers formed during fabrication may be a key to good irradiation performance. Si additions to the matrix allow for solubility of Mo in the desirable (U,Mo)(Al,Si)3 or perhaps (U,Mo)(Al,Si)4 phase, helping to prevent formation of the complex phase. Keeping alloy Mo content as low as possible may also help so long as decomposition does not occur in fabrication, forcing Mo into the interaction layer. This theory may explain a number of apparent anomalies observed in testing results. 6. More work is needed in order to prescribe the conditions to best produce a beneficial IL. Another necessity is a better understanding of any correlation between beneficial characteristics of the pre-fabricated IL and the irradiation conditions to which it will be subjected.

  20. First-principles study of the interfacial adhesion between SiO2 and MoSi2 D. E. Jiang1 and Emily A. Carter2

    E-Print Network [OSTI]

    Carter, Emily A.

    the energy efficiency and per- formance of gas turbine engines requires structural materials able to operate on MoSi2, a potential high-temperature coating material for metals. This silica scale protects MoSi2 the potential of MoSi2 as a high-temperature structural material and coating. DOI: 10.1103/PhysRevB.72

  1. The carburization of transition metal molybdates (MxMoO?, M= Cu, Ni or Co) and the generation of highly active metal/carbide catalysts for CO? hydrogenation

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Rodriguez, Jose A.; Xu, Wenqian; Ramirez, Pedro J.; Stachiola, Dario; Brito, Joaquin L.

    2015-05-06T23:59:59.000Z

    A new approach has been tested for the preparation of metal/Mo?C catalysts using mixed-metal oxide molybdates as precursors. Synchrotron-based in situ time-resolved X-ray diffraction was used to study the reduction and carburization processes of Cu?(MoO?)?(OH)?, a-NiMoO? and CoMoO?nH?O by thermal treatment under mixtures of hydrogen and methane. In all cases, the final product was ?-Mo?C and a metal phase (Cu, Ni, or Co), but the transition sequence varied with the different metals, and it could be related to the reduction potential of the Cu?, Ni? and Co? cations inside each molybdate. The synthesized Cu/Mo?C, Ni/Mo?C and Co/Mo?C catalysts were highlymoreactive for the hydrogenation of CO?. The metal/Mo?C systems exhibited large variations in the selectivity towards methanol, methane and CnH?n?? (n > 2) hydrocarbons depending on the nature of the supported metal and its ability to cleave C-O bonds. Cu/Mo?C displayed a high selectivity for CO and methanol production. Ni/Mo?C and Co/Mo?C were the most active catalysts for the activation and full decomposition of CO?, showing high selectivity for the production of methane (Ni case) and CnH?n?? (n > 2) hydrocarbons (Co case).less

  2. METALS AND MATERIALS International, Vol. 13, No. 6 (2007), pp. 463~468 Comparative Study on Mechanical Properties of MoSiN Multilayer Films

    E-Print Network [OSTI]

    Boo, Jin-Hyo

    2007-01-01T23:59:59.000Z

    -grown MoSiN thin films, argon and nitrogen plasmas ignited by RF and pulse DC under vacuum conditions were) and Ti-covered Si(100) substrates, as well as silicon nitride substrates. Titanium and its alloy have of a MoSi2 source in the presence of nitrogen plasma and MoSiN films have shown good thermal stability

  3. The carburization of transition metal molybdates (MxMoO?, M= Cu, Ni or Co) and the generation of highly active metal/carbide catalysts for CO? hydrogenation

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Rodriguez, Jose A. [Brookhaven National Lab. (BNL), Upton, NY (United States); Xu, Wenqian [Brookhaven National Lab. (BNL), Upton, NY (United States); Ramirez, Pedro J. [Brookhaven National Lab. (BNL), Upton, NY (United States); Univ. Central De Venezuela, Caracas (Venesuela); Stachiola, Dario [Brookhaven National Lab. (BNL), Upton, NY (United States); Brito, Joaquin L. [Inst. Venezolano de Investigaciones Cientificas, Caracas (Venezuela)

    2015-05-06T23:59:59.000Z

    A new approach has been tested for the preparation of metal/Mo?C catalysts using mixed-metal oxide molybdates as precursors. Synchrotron-based in situ time-resolved X-ray diffraction was used to study the reduction and carburization processes of Cu?(MoO?)?(OH)?, a-NiMoO? and CoMoO?nH?O by thermal treatment under mixtures of hydrogen and methane. In all cases, the final product was ?-Mo?C and a metal phase (Cu, Ni, or Co), but the transition sequence varied with the different metals, and it could be related to the reduction potential of the Cu?, Ni? and Co? cations inside each molybdate. The synthesized Cu/Mo?C, Ni/Mo?C and Co/Mo?C catalysts were highly active for the hydrogenation of CO?. The metal/Mo?C systems exhibited large variations in the selectivity towards methanol, methane and CnH?n?? (n > 2) hydrocarbons depending on the nature of the supported metal and its ability to cleave C-O bonds. Cu/Mo?C displayed a high selectivity for CO and methanol production. Ni/Mo?C and Co/Mo?C were the most active catalysts for the activation and full decomposition of CO?, showing high selectivity for the production of methane (Ni case) and CnH?n?? (n > 2) hydrocarbons (Co case).

  4. Unidade Qtd Solicitao Valor Unidade Solic. Atendida N Empenho Valor Unitrio em R$Valor Total em R$ Vr Gasto Unidade Saldo 9 (nove) Computadores "Perfil 1"; OK 2008 NE911222 1.450,00 13.050,00

    E-Print Network [OSTI]

    Maier, Rudolf Richard

    R$ Vr Gasto Unidade Saldo 9 (nove) Computadores "Perfil 1"; OK 2008 NE911222 1.450,00 13.050,00 17.964,00 3.928,00 4 (quatro) Computadores "Perfil 1"; OK 2008 NE911295 1.450,00 5.800,00 10 (dez) Nobreaks de 1000VA; OK 2008 NE911531 510,00 5.100,00 30 (trinta) Computadores "Perfil 1"; OK 2008 NE911296 1.450

  5. Processing, Microstructure and Creep Behavior of Mo-Si-B-Based Intermetallic Alloys for Very High Temperature Structural Applications

    SciTech Connect (OSTI)

    Vijay Vasudevan

    2008-03-31T23:59:59.000Z

    This research project is concerned with developing a fundamental understanding of the effects of processing and microstructure on the creep behavior of refractory intermetallic alloys based on the Mo-Si-B system. In the first part of this project, the compression creep behavior of a Mo-8.9Si-7.71B (in at.%) alloy, at 1100 and 1200 C was studied, whereas in the second part of the project, the constant strain rate compression behavior at 1200, 1300 and 1400 C of a nominally Mo-20Si-10B (in at.%) alloy, processed such as to yield five different {alpha}-Mo volume fractions ranging from 5 to 46%, was studied. In order to determine the deformation and damage mechanisms and rationalize the creep/high temperature deformation data and parameters, the microstructure of both undeformed and deformed samples was characterized in detail using x-ray diffraction, scanning electron microscopy (SEM) with back scattered electron imaging (BSE) and energy dispersive x-ray spectroscopy (EDS), electron back scattered diffraction (EBSD)/orientation electron microscopy in the SEM and transmission electron microscopy (TEM). The microstructure of both alloys was three-phase, being composed of {alpha}-Mo, Mo{sub 3}Si and T2-Mo{sub 5}SiB{sub 2} phases. The values of stress exponents and activation energies, and their dependence on microstructure were determined. The data suggested the operation of both dislocation as well as diffusional mechanisms, depending on alloy, test temperature, stress level and microstructure. Microstructural observations of post-crept/deformed samples indicated the presence of many voids in the {alpha}-Mo grains and few cracks in the intermetallic particles and along their interfaces with the {alpha}-Mo matrix. TEM observations revealed the presence of recrystallized {alpha}-Mo grains and sub-grain boundaries composed of dislocation arrays within the grains (in Mo-8.9Si-7.71B) or fine sub-grains with a high density of b = 1/2<111> dislocations (in Mo-20Si-10B), which are consistent with the values of the respective stress exponents and activation energies that were obtained and provide confirmatory evidence for the operation of diffusional (former alloy) or dislocation (latter alloy) creep mechanisms. In contrast, the intermetallic phases contained very few dislocations, but many cracks. The relative contributions of the {alpha}-Mo and the intermetallic particles to the overall deformation process, including their individual and collective dependence on temperature and strain rate are discussed in light of the present results and those from previous reports.

  6. Modeling of Interaction Layer Growth Between U-Mo Particles and an Al Matrix

    SciTech Connect (OSTI)

    Yeon Soo Kim; G. L. Hofman; Ho Jin Ryu; Jong Man Park; A. B. Robinson; D. M. Wachs

    2013-12-01T23:59:59.000Z

    Interaction layer growth between U-Mo alloy fuel particles and Al in a dispersion fuel is a concern due to the volume expansion and other unfavorable irradiation behavior of the interaction product. To reduce interaction layer (IL) growth, a small amount of Si is added to the Al. As a result, IL growth is affected by the Si content in the Al matrix. In order to predict IL growth during fabrication and irradiation, empirical models were developed. For IL growth prediction during fabrication and any follow-on heating process before irradiation, out-of-pile heating test data were used to develop kinetic correlations. Two out-of-pile correlations, one for the pure Al matrix and the other for the Al matrix with Si addition, respectively, were developed, which are Arrhenius equations that include temperature and time. For IL growth predictions during irradiation, the out-of-pile correlations were modified to include a fission-rate term to consider fission enhanced diffusion, and multiplication factors to incorporate the Si addition effect and the effect of the Mo content. The in-pile correlation is applicable for a pure Al matrix and an Al matrix with the Si content up to 8 wt%, for fuel temperatures up to 200 degrees C, and for Mo content in the range of 6 10wt%. In order to cover these ranges, in-pile data were included in modeling from various tests, such as the US RERTR-4, -5, -6, -7 and -9 tests and Koreas KOMO-4 test, that were designed to systematically examine the effects of the fission rate, temperature, Si content in Al matrix, and Mo content in U-Mo particles. A model converting the IL thickness to the IL volume fraction in the meat was also developed.

  7. Novel Processing of mo-si-b Intermetallics for improved efficiency of power systems

    SciTech Connect (OSTI)

    M.J. Kramer; O. Degirmen; A.J. Thom; M. Akinc

    2004-09-30T23:59:59.000Z

    Multiphase composite alloys based on the Mo-Si-B system are candidate materials for ultra-high temperature applications. In non load-bearing applications such as thermal barrier coatings or heat exchangers in fossil fuel burners, these materials may be ideally suited. Alloys based on the Mo{sub 5}Si{sub 3}B{sub x} phase (Tl phase) possess excellent oxidation resistance to at least 1600 C in synthetic air atmospheres. However, the ability of Tl-based alloys to resist aggressive combustion environments has not yet been determined. The present work seeks to investigate the resistance of these Mo-Si-B alloys to simulated combustion atmospheres. Material was pre-alloyed by combustion synthesis, and samples for testing were prepared by classic powder metallurgical processing techniques. Precursor material synthesized by self-heating-synthesis was sintered to densities exceeding 98% in an argon atmosphere at 1800 C. The approximate phase assemblage of the material was 57% Tl, 29% MoB, 14% MoSi{sub 2} (wt%). The alloy was oxidized from 1000-1100 C in flowing air containing water vapor at 18 Torr. At 1000 C the material achieved a steady state mass loss, and at 1100 C the material undergoes a steady state mass gain. The oxidation rate of these alloys in this temperature regime was accelerated by the presence of water vapor compared to oxidation in dry air. The results of microstructural analysis of the tested alloys will be discussed. Techniques and preliminary results for fabricating near-net-shaped parts will also be presented.

  8. Region 2007 2008 2009 2010 2011 2012 New England 183 140 138 140 127 136 -26%

    E-Print Network [OSTI]

    Fernandez, Eduardo

    17% Plains 45 48 50 60 53 59 31% Rocky Mountains 18 18 27 21 21 19 6% Southwest 56 61 61 57 64 83 48 Region Florida Atlantic University CO TX NMAZ UT NV CA OR WA WY ND SD NE KS OK MN WI MI IA MO IL AR AL AK New England Great Lakes Plains Rocky Mountains Far West Florida South west #12;

  9. Lead Grant Reference Lead Grant RO Grant Holder Last Name, First Name Project Title NE/K000071/1 Newcastle University Mr R Gaulton Dual-wavelength laser scanning for forest health

    E-Print Network [OSTI]

    Newcastle University Mr R Gaulton Dual-wavelength laser scanning for forest health monitoring. NE/K000381/1Lead Grant Reference Lead Grant RO Grant Holder Last Name, First Name Project Title NE/K000071/1 and sensory mechanisms in bat navigation NE/K000403/1 University of Southampton Dr S Watt Emplacement dynamics

  10. Investigation of the $^{37}Ar(n,p)$ $^{37}Cl$ and $^{37}Ar(n,\\alpha)$ $^{34}S$ reactions as a function of the neutron energy

    E-Print Network [OSTI]

    Wagemans, C; Wagemans, J; Bieber, R; Loiselet, M; Gaelens, M; Denecke, B; Geltenbort, P; Kolen, F; Wagemans, Cyriel; Goeminne, Gert; Wagemans, Jan; Bieber, Ronald; Loiselet, Marc; Gaelens, Michel; Denecke, Bruno; Geltenbort, Peter; Kolen, Filip

    1999-01-01T23:59:59.000Z

    The energy dependent 37Ar(n,p)37Cl and 37Ar(n,alpha)34S reaction cross sections were determined for the first time in an experimental effort involving three large facilities: the cyclotron of the UCL (Louvain-la-Neuve, Belgium) where implanted 37Ar samples were produced; the high flux reactor of the ILL (Grenoble, France) where thermal (n,p), (n,alpha_0) and (n,alpha_1) cross sections of (37+/-4)b, (1070+/-80)b and (290+/-50)mb respectively could be determined, and the GELINA neutron time-of-flight facility of the IRMM (Geel, Belgium) where strong resonances were observed in the keV region.

  11. Investigation of the 37Ar(n,p)37Cl and 37Ar(n,alpha)34S reactions as a function of the neutron energy

    E-Print Network [OSTI]

    Cyriel Wagemans; Gert Goeminne; Jan Wagemans; Ronald Bieber; Marc Loiselet; Michel Gaelens; Bruno Denecke; Peter Geltenbort; Filip Kolen

    1999-02-09T23:59:59.000Z

    The energy dependent 37Ar(n,p)37Cl and 37Ar(n,alpha)34S reaction cross sections were determined for the first time in an experimental effort involving three large facilities: the cyclotron of the UCL (Louvain-la-Neuve, Belgium) where implanted 37Ar samples were produced; the high flux reactor of the ILL (Grenoble, France) where thermal (n,p), (n,alpha_0) and (n,alpha_1) cross sections of (37+/-4)b, (1070+/-80)b and (290+/-50)mb respectively could be determined, and the GELINA neutron time-of-flight facility of the IRMM (Geel, Belgium) where strong resonances were observed in the keV region.

  12. MoS{sub 2}@ZnO nano-heterojunctions with enhanced photocatalysis and field emission properties

    SciTech Connect (OSTI)

    Tan, Ying-Hua; Yu, Ke, E-mail: yk5188@263.net; Li, Jin-Zhu; Fu, Hao; Zhu, Zi-Qiang [Key Laboratory of Polar Materials and Devices (Ministry of Education of China), Department of Electronic Engineering, East China Normal University, Shanghai 200241 (China)

    2014-08-14T23:59:59.000Z

    The molybdenum disulfide (MoS{sub 2})@ZnO nano-heterojunctions were successfully fabricated through a facile three-step synthetic process: prefabrication of the ZnO nanoparticles, the synthesis of MoS{sub 2} nanoflowers, and the fabrication of MoS{sub 2}@ZnO heterojunctions, in which ZnO nanoparticles were uniformly self-assembled on the MoS{sub 2} nanoflowers by utilizing polyethyleneimine as a binding agent. The photocatalytic activities of the composite samples were evaluated by monitoring the photodegradation of methylene blue (MB). Compared with pure MoS{sub 2} nanoflowers, the composites show higher adsorption capability in dark and better photocatalytic efficiency due to the increased specific surface area and improved electron-hole pair separation. After irradiation for 100?min, the remaining MB in solution is about 7.3%. Moreover, the MoS{sub 2}@ZnO heterojunctions possess enhanced field emission properties with lower turn-on field of 3.08?V ?m{sup ?1}and lower threshold field of 6.9?V ?m{sup ?1} relative to pure MoS{sub 2} with turn-on field of 3.65?V ?m{sup ?1} and threshold field of 9.03?V ?m{sup ?1}.

  13. Chemical interaction of B{sub 4}C, B, and C with Mo/Si layered structures

    SciTech Connect (OSTI)

    Rooij-Lohmann, V. I. T. A. de; Veldhuizen, L. W.; Zoethout, E.; Yakshin, A. E.; Kruijs, R. W. E. van de [FOM Institute for Plasma Physics Rijnhuizen, P.O. Box 1207, 3430 BE Nieuwegein (Netherlands); Thijsse, B. J. [Department of Materials Science and Engineering, Delft University of Technology, Mekelweg 2, 2628 CD Delft (Netherlands); Gorgoi, M.; Schaefers, F. [Helmholtz-Zentrum Berlin fuer Materialien und Energie GmbH, BESSY II, Albert-Einstein Strasse 15, 12489 Berlin (Germany); Bijkerk, F. [FOM Institute for Plasma Physics Rijnhuizen, P.O. Box 1207, 3430 BE Nieuwegein (Netherlands); MESA Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE Enschede (Netherlands)

    2010-11-15T23:59:59.000Z

    To enhance the thermal stability, B{sub 4}C diffusion barrier layers are often added to Mo/Si multilayer structures for extreme ultraviolet optics. Knowledge about the chemical interaction between B{sub 4}C and Mo or Si, however is largely lacking. Therefore, the chemical processes during annealing up to 600 deg. C of a Mo/B{sub 4}C/Si layered structure have been investigated in situ with hard x-ray photoelectron spectroscopy and ex situ with depth profiling x-ray photoelectron spectroscopy. Mo/B/Si and Mo/C/Si structures have also been analyzed as reference systems. The chemical processes in these systems have been identified, with two stages being distinguished. In the first stage, B and C diffuse and react predominantly with Mo. MoSi{sub x} forms in the second stage. If the diffusion barrier consists of C or B{sub 4}C, a compound forms that is stable up to the maximum probed temperature and annealing time. We suggest that the diffusion barrier function of B{sub 4}C interlayers as reported in literature can be caused by the stability of the formed compound, rather than by the stability of B{sub 4}C itself.

  14. K-Ar Dates Of Hydrothermal Clays From Core Hole Vc-2B, Valles...

    Open Energy Info (EERE)

    Ar Dates Of Hydrothermal Clays From Core Hole Vc-2B, Valles Caldera, New Mexico And Their Relation To Alteration In A Large Hydrothermal System Jump to: navigation, search OpenEI...

  15. An Application of Augmented Reality (AR) in the Teaching of an Arc Welding Robot

    E-Print Network [OSTI]

    Chong, J. W. S.

    Augmented Reality (AR) is an emerging technology that utilizes computer vision methods to overlay virtual objects onto the real world scene so as to make them appear to co-exist with the real objects. Its main objective ...

  16. Apprentice Researchers The Apprentice Researchers (AR) program was awarded supplemental funding by NSF's EHR

    E-Print Network [OSTI]

    Bigelow, Stephen

    Apprentice Researchers The Apprentice Researchers (AR) program was awarded supplemental funding apprentices acquire scientific knowledge and lab skills while experiencing what real research in hopes to their peers, family, and mentors. Totals -Summers 1991 to 2008 Total #Apprentices % Apprentices All

  17. Data Reduction Processes Using FPGA for MicroBooNE Liquid Argon Time Projection Chamber

    SciTech Connect (OSTI)

    Wu, Jinyuan

    2010-05-26T23:59:59.000Z

    MicroBooNE is a liquid Argon time projection chamber to be built at Fermilab for an accelerator-based neutrino physics experiment and as part of the R&D strategy for a large liquid argon detector at DUSEL. The waveforms of the {approx}9000 sense wires in the chamber are continuously digitized at 2 M samples/s - which results in a large volume of data coming off the TPC. We have developed a lossless data reduction scheme based on Huffman Coding and have tested the scheme on cosmic ray data taken from a small liquid Argon time projection chamber, the BO detector. For sense wire waveforms produced by cosmic ray tracks, the Huffman Coding scheme compresses the data by a factor of approximately 10. The compressed data can be fully recovered back to the original data since the compression is lossless. In addition to accelerator neutrino data, which comes with small duty cycle in sync with the accelerator beam spill, continuous digitized waveforms are to be temporarily stored in the MicroBooNE data-acquisition system for about an hour, long enough for an external alert from possible supernova events. Another scheme, Dynamic Decimation, has been developed to compress further the potential supernova data so that the storage can be implemented within a reasonable budget. In the Dynamic Decimation scheme, data are sampled at the full sampling rate in the regions-of-interest (ROI) containing waveforms of track-hits and are decimated down to lower sampling rate outside the ROI. Note that unlike in typical zerosuppression schemes, in Dynamic Decimation, the data in the pedestal region are not thrown away but kept at a lower sampling rate. An additional factor of 10 compression ratio is achieved using the Dynamic Decimation scheme on the BO detector data, making a total compression rate of approximate 100 when the Dynamic Decimation and the Huffman Coding functional blocks are cascaded. Both of the blocks are compiled in low-cost FPGA and their silicon resource usages are low.

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

    SciTech Connect (OSTI)

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

    2012-06-29T23:59:59.000Z

    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).

  19. The science case for 37Ar as a monitor for underground nuclear explosions

    SciTech Connect (OSTI)

    Haas, Derek A.; Orrell, John L.; Bowyer, Ted W.; McIntyre, Justin I.; Miley, Harry S.; Aalseth, Craig E.; Hayes, James C.

    2010-06-04T23:59:59.000Z

    A new calculation of the production of 37Ar from nuclear explosion neutron interactions on 40Ca in a suite of common sub-surface materials (rock, etc) is presented. Even in mineral structures that are relatively low in Ca, the resulting 37Ar signature is large enough for detection in cases of venting or gaseous diffusion driven by barometric pumping. Field and laboratory detection strategies and projected sensitivities are presented.

  20. Le magn)sme ar)ficiel pour les gaz d'atomes froids Jean Dalibard

    E-Print Network [OSTI]

    Dalibard, Jean

    Le magné)sme ar)ficiel pour les gaz d'atomes froids Jean Dalibard Année 2013-14 Chaire Atomes et rayonnement Magné8sme ar8ficiel et interac8ons : condensats en rota8on #12;Magné8sme dans une assemblée de par8cule en interac8on

  1. Ionization satellites of the ArHe dimer

    SciTech Connect (OSTI)

    Miteva, Tsveta; Klaiman, Shachar; Gokhberg, Kirill [Theoretische Chemie, Physikalisch-Chemisches Institut, Universitt Heidelberg, Im Neuenheimer Feld 229, D-69120 Heidelberg (Germany); Gromov, Evgeniy V., E-mail: Evgeniy.Gromov@pci.uni-heidelberg.de [Theoretische Chemie, Physikalisch-Chemisches Institut, Universitt Heidelberg, Im Neuenheimer Feld 229, D-69120 Heidelberg (Germany); Laboratory of Quantum Chemistry, Computer Center, Irkutsk State University, K. Marks 1, 664003 Irkutsk (Russian Federation)

    2014-05-28T23:59:59.000Z

    Ionization satellites are key ingredients in the control of post ionization processes such as molecular dissociation and interatomic Coulombic decay. Here, using the high-level ab initio method of multi-reference configuration interaction up to triple excitations, we study the potential energy curves (PECs) of the ionization satellites of the ArHe dimer. With this model system, we demonstrate that the simple model used in alkaline earth metal and rare gas complexes to describe the satellites as a Rydberg electron moving on top of a dicationic core does not fully hold for the rare gas clusters. The more complex valence structure in the rare gas atom leads to the mixing of different electronic configurations of the dimer. This prevents one from assigning a single dicationic parent state to some of the ionization satellites. We further analyze the structure of the different PECs, demonstrating how the density of the Rydberg electron is reflected in the structure of the PEC wherever the simple model is applicable.

  2. The Efficacy of SEER as a Seasonal Performance Measure for Different Climates

    E-Print Network [OSTI]

    Henderson, H. I.; Sachs, H. M.

    2006-01-01T23:59:59.000Z

    Data Albuquerque-NM Amarillo-TX Austin-TX Boise-ID Brownsville-TX Columbia-SC Corpus_Christi-TX Elko-NV Fort_Smith-AR Grand_Junction-CO Jackson-MS Kansas_City-MO Little_Rock-AR Lubbock-TXLufkin-TX Memphis-TN Meridian-MS Miles..._City-MT Montgomery-AL Nashville-TN North_Platte-NE Norfolk-NE Pendleton-OR Pierre-SD Pocatello-ID Pueblo-CO Reno-NV Scottsbluff-NE Shreveport-LA Sioux_Falls-SD San_Antonio-TX Tonopah-NV Tucumcari-NM Victoria-TX 6 Tampa-Florida 40 60 80 100 120...

  3. Epitaxial growth of few-layer MoS2(0001) on FeS2{100}

    E-Print Network [OSTI]

    Liu, T.; Temprano, I.; King, D. A.; Driver, S. M.; Jenkins, S. J.

    2014-11-13T23:59:59.000Z

    ) or self-assembled monolayers have already shown promise in delivering high quality graphene.8 Few-layer MoS2 is most commonly obtained by top-down methods such as lithium intercalation, micro mechanical exfoliation, or liquid-phase exfoliation.2 Attempts... trilayers may be terminated by complete S layers, leading to SFeSSMoS layering; in this scenario, the epitaxy is driven simply by van der Waals interactions between the layers. In principle, sourcing the S atoms in the MoS2 layer from the bulk FeS2...

  4. Photoresponse properties of large-area MoS{sub 2} atomic layer synthesized by vapor phase deposition

    SciTech Connect (OSTI)

    Luo, Siwei; Qi, Xiang, E-mail: xqi@xtu.edu.cn, E-mail: jxzhong@xtu.edu.cn; Ren, Long; Hao, Guolin; Fan, Yinping; Liu, Yundan; Han, Weijia; Zang, Chen; Li, Jun; Zhong, Jianxin, E-mail: xqi@xtu.edu.cn, E-mail: jxzhong@xtu.edu.cn [Hunan Key Laboratory for Micro-Nano Energy Materials and Devices, People's Republic of China Laboratory for Quantum Engineering and Micro-Nano Energy Technology, and Faculty of Materials and Optoelectronic Physics, Xiangtan University, Hunan 411105 (China)

    2014-10-28T23:59:59.000Z

    Photoresponse properties of a large area MoS{sub 2} atomic layer synthesized by vapor phase deposition method without any catalyst are studied. Scanning electron microscopy, atomic force microscopy, Raman spectrum, and photoluminescence spectrum characterizations confirm that the two-dimensional microstructures of MoS{sub 2} atomic layer are of high quality. Photoelectrical results indicate that the as-prepared MoS{sub 2} devices have an excellent sensitivity and a good reproducibility as a photodetector, which is proposed to be ascribed to the potential-assisted charge separation mechanism.

  5. Hanford Site's Data Packages in the Administrative Record (AR) and Public Information Repository (PIR)

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    In 1989, the Department of Energy joined with the Washington State Department of Ecology and the U.S. Environmental Protection Agency in signing the Hanford Federal Facility Agreement and Consent Order more commonly known as the Tri-Party Agreement (TPA). The TPA outlines legally enforceable milestones for Hanford cleanup over the next several decades. The AR is the body of documents and information that is considered or relied upon to arrive at a final decision for remedial action or hazardous waste management. An AR is established for each operable unit (OU); treatment, storage, or disposal unit (TSD); or Expedited Response Action (ERA) group and will contain all documents having information considered in arriving at a Record of Decision or permit. Documents become part of the AR after they have been designated as an AR by the TPA or after EPA, DOE, or other official parties have identified a document or set of documents for inclusion. Furthermore, AR documents are to be kept in a Public Information Repository (PIR).Thousands of data packages that support the AR documents are available to the public in the Hanford PIR.

  6. Improved Search for ??????e Oscillations in the MiniBooNE Experiment

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Aguilar-Arevalo, A. A.; Brown, B. C.; Bugel, L.; Cheng, G.; Church, E. D.; Conrad, J. M.; Dharmapalan, R.; Djurcic, Z.; Finley, D. A.; Ford, R.; et al

    2013-04-01T23:59:59.000Z

    The MiniBooNE experiment at Fermilab reports results from an analysis of ?e appearance data from 11.2710? protons on target in the antineutrino mode, an increase of approximately a factor of 2 over the previously reported results. An event excess of 78.428.5 events (2.8?) is observed in the energy range 200QE????e, the best oscillation fit to the excess has a probability of 66% while the background-only fit has a ? probability of 0.5% relative to the best fit. The data are consistent with antineutrino oscillations in the 0.01moresome overlap with the evidence for antineutrino oscillations from the Liquid Scintillator Neutrino Detector. All of the major backgrounds are constrained by in situ event measurements so nonoscillation explanations would need to invoke new anomalous background processes. The neutrino mode running also shows an excess at low energy of 162.047.8 events (3.4?) but the energy distribution of the excess is marginally compatible with a simple two neutrino oscillation formalism. Expanded models with several sterile neutrinos can reduce the incompatibility by allowing for CP violating effects between neutrino and antineutrino oscillations.less

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

    E-Print Network [OSTI]

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

    2004-02-26T23:59:59.000Z

    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.

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

    E-Print Network [OSTI]

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

    1994-06-06T23:59:59.000Z

    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.

  9. Improved Search for ??????e Oscillations in the MiniBooNE Experiment

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Aguilar-Arevalo, A. A.; Brown, B. C.; Bugel, L.; Cheng, G.; Church, E. D.; Conrad, J. M.; Dharmapalan, R.; Djurcic, Z.; Finley, D. A.; Ford, R.; Garcia, F. G.; Garvey, G. T.; Grange, J.; Huelsnitz, W.; Ignarra, C.; Imlay, R.; Johnson, R. A.; Karagiorgi, G.; Katori, T.; Kobilarcik, T.; Louis, W. C.; Mariani, C.; Marsh, W.; Mills, G. B.; Mirabal, J.; Moore, C. D.; Mousseau, J.; Nienaber, P.; Osmanov, B.; Pavlovic, Z.; Perevalov, D.; Polly, C. C.; Ray, H.; Roe, B. P.; Russell, A. D.; Shaevitz, M. H.; Spitz, J.; Stancu, I.; Tayloe, R.; Van de Water, R. G.; White, D. H.; Wickremasinghe, D. A.; Zeller, G. P.; Zimmerman, E. D.

    2013-04-01T23:59:59.000Z

    The MiniBooNE experiment at Fermilab reports results from an analysis of ?e appearance data from 11.2710? protons on target in the antineutrino mode, an increase of approximately a factor of 2 over the previously reported results. An event excess of 78.428.5 events (2.8?) is observed in the energy range 200QE????e, the best oscillation fit to the excess has a probability of 66% while the background-only fit has a ? probability of 0.5% relative to the best fit. The data are consistent with antineutrino oscillations in the 0.01

  10. Structure of Co-Mo/UPSILON-Al/sub 7/O/sub 3/ catalysts and relationship to HDS and hydrogenation activity. [Hydrodesulfurization (HDS)

    SciTech Connect (OSTI)

    Bennet, B.A. (Imperial Coll., London, England); Chadwick, D.; Jawahery, A.R.; Breysse, M.; Vrinat, M.

    1982-09-01T23:59:59.000Z

    From Mossbauer spectroscopy studies of catalysts of typical industrial compositions and activity measurements it was shown that catalysts containing the ''Co-Mo-S'' phase have relatively higher hydrodesulfurization (HDS) activities. It was also found that the use of Co in the first impregnation step favored the formation of Co/sub 9/S/sub 8/ (in addition to Co in alumina), while the reverse impregnation order produced mainly the ''Co-Mo-S'' phase. Avoiding Co/sub 3/O/sub 4/ formation in the oxide precursor was important for the formation of the ''Co-Mo-S'' phase and this was achieved by the impregnation of Mo before Co. There was also evidence that when Co was used in the second impregnation step, there was significant Mo, Co interaction. This interaction my produce a CoMo surface phase which is disordered and well dispersed and sulfides to the ''Co-Mo-S'' phase. (JMT)

  11. AMoRE: Collaboration for searches for the neutrinoless double-beta decay of the isotope of {sup 100}Mo with the aid of {sup 40}Ca{sup 100}MoO{sub 4} as a cryogenic scintillation detector

    SciTech Connect (OSTI)

    Khanbekov, N. D., E-mail: xanbekov@gmail.com [Institute of Theoretical and Experimental Physics (Russian Federation)

    2013-09-15T23:59:59.000Z

    The AMoRE (Advanced Mo based Rare process Experiment) Collaboration is planning to employ {sup 40}Ca{sup 100}MoO{sub 4} single crystals as a cryogenic Scintillation detector for studying the neutrinoless double-beta decay of the isotope {sup 100}Mo. A simultaneous readout of phonon and scintillation signals is performed in order to suppress the intrinsic background. The planned sensitivity of the experiment that would employ 100 kg of {sup 40}Ca{sup 100}MoO{sub 4} over five years of data accumulation would be T{sub 1/2}{sup 0{nu}} = 3 Multiplication-Sign 10{sup 26} yr, which corresponds to values of the effective Majorana neutrino mass in the range of Left-Pointing-Angle-Bracket m{sub {nu}} Right-Pointing-Angle-Bracket {approx} 0.02-0.06 eV.

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

    SciTech Connect (OSTI)

    Rich Johnson; Hyung Lee; Kimberlyn C. Mousseau

    2011-09-01T23:59:59.000Z

    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.

  13. Comment on "15O(alpha,gamma)19Ne Breakout Reaction and Impact on X-Ray Bursts"

    E-Print Network [OSTI]

    B. Davids

    2008-04-12T23:59:59.000Z

    A recently published letter reports a measurement of alpha decay from states in 19Ne at excitation energies below 4.5 MeV. The measured alpha decay branching ratios B_alpha are used to calculate the astrophysical rate of the 15O(alpha,gamma)19Ne reaction and to draw conclusions regarding the transition between steady state and unstable nuclear burning on accreting neutron stars. Here I show that the calculated astrophysical reaction rate is based on an unreliable value of B_alpha for the 4.03 MeV state and point out a serious internal inconsistency in the letter's treatment of low statistics alpha decay measurements.

  14. Investigation of complete and incomplete fusion dynamics of {sup 20}Ne induced reactions at energies above the Coulomb barrier

    SciTech Connect (OSTI)

    Singh, D., E-mail: dsinghiuac@gmail.com [Centre for Applied Physics, Central University of Jharkhand, Ranchi-835 205 (India); Ali, R. [Department of Physics, G.F.(P.G.), College, Shahjahanpur-242 001 (India); Kumar, Harish; Ansari, M. Afzal [Department of Physics, Aligarh Muslim University, Aligarh-202 002 (India); Rashid, M. H.; Guin, R. [Variable Energy Cyclotron Centre, 1/AF, Bidhan Nagar, Kolkata-700 064 (India)

    2014-08-14T23:59:59.000Z

    Experiment has been performed to explore the complete and incomplete fusion dynamics in heavy ion collisions using stacked foil activation technique. The measurement of excitation functions of the evaporation residues produced in the {sup 20}Ne+{sup 165}Ho system at projectile energies ranges ? 4-8 MeV/nucleon have been done. Measured cumulative and direct cross-sections have been compared with the theoretical model code PACE-2, which takes into account only the complete fusion process. The analysis indicates the presence of contributions from incomplete fusion processes in some ?-emission channels following the break-up of the projectile {sup 20}Ne in the nuclear field of the target nucleus {sup 165}Ho.

  15. Detailed microscopic calculation of stellar electron and positron capture rates on $^{24}$Mg for O+Ne+Mg core simulations

    E-Print Network [OSTI]

    Jameel-Un Nabi

    2014-08-15T23:59:59.000Z

    Few white dwarfs, located in binary systems, may acquire sufficiently high mass accretion rates resulting in the burning of carbon and oxygen under nondegenerate conditions forming a O+Ne+Mg core. These O+Ne+Mg cores are gravitationally less bound than more massive progenitor stars and can release more energy due to the nuclear burning. They are also amongst the probable candidates for low entropy r-process sites. Recent observations of subluminous Type II-P supernovae (e.g., 2005cs, 2003gd, 1999br, 1997D) were able to rekindle the interest in 8 -- 10 M$_{\\odot}$ which develop O+Ne+Mg cores. Microscopic calculations of capture rates on $^{24}$Mg, which may contribute significantly to the collapse of O+Ne+Mg cores, using shell model and proton-neutron quasiparticle random phase approximation (pn-QRPA) theory, were performed earlier and comparisons made. Simulators, however, may require these capture rates on a fine scale. For the first time a detailed microscopic calculation of the electron and positron capture rates on $^{24}$Mg on an extensive temperature-density scale is presented here. This type of scale is more appropriate for interpolation purposes and of greater utility for simulation codes. The calculations are done using the pn-QRPA theory using a separable interaction. The deformation parameter, believed to be a key parameter in QRPA calculations, is adopted from experimental data to further increase the reliability of the QRPA results. The resulting calculated rates are up to a factor of 14 or more enhanced as compared to shell model rates and may lead to some interesting scenario for core collapse simulators.

  16. Using MiniBooNE NCEL and CCQE cross section results to constrain 3+1 sterile neutrino models

    E-Print Network [OSTI]

    Callum Wilkinson; Susan Cartwright; Lee Thompson

    2014-12-01T23:59:59.000Z

    The MiniBooNE NCEL and CCQE cross-section measurements (neutrino running) are used to set 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 relativistic Fermi gas model, to relate $E_{\

  17. Brittle Fracture in a 50Mo-50Re alloy in static tensile testing

    SciTech Connect (OSTI)

    Xu, Jianhui [University of Kentucky, Lexington; Kenik, Edward A [ORNL; Zhai, Tongguang [University of Kentucky, Lexington

    2008-01-01T23:59:59.000Z

    Tensile tests were conducted on 50Mo-50Re alloys, in fully-recrystallized and recovery heat-treated conditions respectively, at a very low strain rate of 10-6 s-1 and room temperature in air. It was found that both these alloys exhibited predominantly cleavage fracture with significant intergranular secondary cracking, compared to the predominantly ductile fracture found in the alloys at a higher strain rate. Cracks were often initiated at grain boundary triple junctions at the low strain rate. Electron back scatter diffraction (EBSD) measurements revealed significantly high misorientation gradients at grain boundaries, especially in the vicinity of some grain boundary triple junctions in the deformed alloys. Transmission electron microscopic (TEM) results verified the existence of significant misorientation taking place at grain boundaries in these alloys. Stress-assisted dynamic embrittlement, possibly due to trace interstitials, was the possible cause for the occurrence of brittle fracture in the 50Mo-50Re alloys at the low strain rate.

  18. Spectroscopy of Double-Beta and Inverse-Beta Decays from 100Mo for Neutrinos

    E-Print Network [OSTI]

    H. Ejiri; J. Engel; R. Hazama; P. Krastev; N. Kudomi; R. G. H. Robertson

    2000-05-15T23:59:59.000Z

    Spectroscopic studies of two beta-rays from 100Mo are shown to be of potential interest for investigating both the Majorana neutrino mass by neutrinoless double beta-decay and low energy solar neutrino's by inverse beta-decay. With a multi-ton 100Mo detector, coincidence studies of correlated beta-beta from neutrinoless double beta-decay, together with the large Q value, permit identification of the neutrino-mass term with a sensitivity of ~ 0.03 eV. Correlation studies of the inverse beta and the successive beta-decay of 100Tc, together with the large capture rates for low energy solar neutrino's, make it possible to detect in realtime individual low energy solar neutrino in the same detector.

  19. Air damping of atomically thin MoS{sub 2} nanomechanical resonators

    SciTech Connect (OSTI)

    Lee, Jaesung; Wang, Zenghui; Feng, Philip X.-L., E-mail: philip.feng@case.edu [Department of Electrical Engineering and Computer Science, Case School of Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106 (United States); He, Keliang; Shan, Jie [Department of Physics, College of Arts and Sciences, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106 (United States)

    2014-07-14T23:59:59.000Z

    We report on experimental measurement of air damping effects in high frequency nanomembrane resonators made of atomically thin molybdenum disulfide (MoS{sub 2}) drumhead structures. Circular MoS{sub 2} nanomembranes with thickness of monolayer, few-layer, and multi-layer up to ?70?nm (?100 layers) exhibit intriguing pressure dependence of resonance characteristics. In completely covered drumheads, where there is no immediate equilibrium between the drum cavity and environment, resonance frequencies and quality (Q) factors strongly depend on environmental pressure due to bulging of the nanomembranes. In incompletely covered drumheads, strong frequency shifts due to compressing-cavity stiffening occur above ?200?Torr. The pressure-dependent Q factors are limited by free molecule flow (FMF) damping, and all the mono-, bi-, and tri-layer devices exhibit lower FMF damping than thicker, conventional devices do.

  20. Improved performance of U-Mo dispersion fuel by Si addition in Al matrix.

    SciTech Connect (OSTI)

    Kim, Y S; Hofman, G L [Nuclear Engineering Division

    2011-06-01T23:59:59.000Z

    The purpose of this report is to collect in one publication and fit together work fragments presented in many conferences in the multi-year time span starting 2002 to the present dealing with the problem of large pore formation in U-Mo/Al dispersion fuel plates first observed in 2002. Hence, this report summarizes the excerpts from papers and reports on how we interpreted the relevant results from out-of-pile and in-pile tests and how this problem was dealt with. This report also provides a refined view to explain in detail and in a quantitative manner the underlying mechanism of the role of silicon in improving the irradiation performance of U-Mo/Al.

  1. Oxidation Behavior and Chlorination Treatment to Improve Oxidation Resistance of Nb-Mo-Si-B Alloys

    SciTech Connect (OSTI)

    Vikas Behrani

    2004-12-19T23:59:59.000Z

    This thesis is written in an alternate format. The thesis is composed of a general introduction, two original manuscripts, and a general conclusion. References cited within each chapter are given at the end of each chapter. The general introduction starts with the driving force behind this research, and gives an overview of previous work on boron doped molybdenum silicides, Nb/Nb{sub 5}Si{sub 3} composites, boron modified niobium silicides and molybdenum niobium silicides. Chapter 2 focuses on the oxidation behavior of Nb-Mo-Si-B alloys. Chapter 3 contains studies on a novel chlorination technique to improve the oxidation resistance of Nb-Mo-Si-B alloys. Chapter 4 summarizes the important results in this study.

  2. Fission induced swelling and creep of UMo alloy fuel

    SciTech Connect (OSTI)

    Yeon Soo Kim; G. L. Hofman; J. S. Cheon; A. B. Robinson; D. M. Wachs

    2013-06-01T23:59:59.000Z

    Tapering of UMo alloy fuel at the end of plates is attributed to lateral mass transfer by fission induced creep, by which fuel mass is relocated away from the fuel end region where fission product induced fuel swelling is in fact the highest. This mechanism permits UMo fuel to achieve high burnup by effectively relieving stresses at the fuel end region, where peak stresses are otherwise expected because peak fission product induced fuel swelling occurs there. ABAQUS FEA was employed to examine whether the observed phenomenon can be simulated using physicalmechanical data available in the literature. The simulation results obtained for several plates with different fuel fabrication and loading scheme showed that the measured data were able to be simulated with a reasonable creep rate coefficient. The obtained creep rate constant lies between values for pure uranium and MOX, and is greater than all other ceramic uranium fuels.

  3. Induced codeposition. 1: An experimental investigation of Ni-Mo alloys

    SciTech Connect (OSTI)

    Podlaha, E.J.; Landolt, D. [Ecole Polytechnique Federale de Lausanne (Switzerland)

    1996-03-01T23:59:59.000Z

    The electrodeposition of nickel-molybdenum alloys was studied on rotating cylinder electrodes. The current density, electrode rotation rate, electrolyte temperature, and species concentrations were shown to influence alloy composition. The mass-transport limiting species were identified for different operating conditions and electrolyte compositions in order to study the rate-limiting steps of induced codeposition. If the concentration of nickel in the electrolyte was much larger than that of molybdate the molybdenum content in the alloy increased with rotation rate. On the other hand, if the concentration of molybdate in the electrolyte was larger than that of nickel the alloy composition was found to be independent of rotation rate. These results were applied to the deposition of compositionally modulated Ni-Mo alloys exhibiting larger periodic variations in Mo concentration than hitherto reported.

  4. Phase transitions in K-doped MoO{sub 2}

    SciTech Connect (OSTI)

    Alves, L. M. S., E-mail: leandro-fisico@hotmail.com; Lima, B. S. de; Santos, C. A. M. dos [Departamento de Engenharia de Materiais, Escola de Engenharia de Lorena-USP, Lorena, So Paulo 12602-810 (Brazil); Rebello, A.; Masunaga, S. H.; Neumeier, J. J. [Department of Physics, Montana State University, P.O. Box 173840, Bozeman, Montana 59717-3840 (United States); Leo, J. B. [NIST Center for Neutron Research, National Institute of Standards and Technology, 100 Bureau Dr. MS 6102, Gaithersburg, Maryland 20899-6102 (United States)

    2014-05-28T23:59:59.000Z

    K{sub 0.05}MoO{sub 2} has been studied by x-ray and neutron diffractometry, electrical resistivity, magnetization, heat capacity, and thermal expansion measurements. The compound displays two phase transitions, a first-order phase transition near room temperature and a second-order transition near 54?K. Below the transition at 54?K, a weak magnetic anomaly is observed and the electrical resistivity is well described by a power-law temperature dependence with exponent near 0.5. The phase transitions in the K-doped MoO{sub 2} compound have been discussed for the first time using neutron diffraction, high resolution thermal expansion, and heat capacity measurements as a function of temperature.

  5. Are oxygen and neon enriched in PNe and is the current solar Ne/O abundance ratio underestimated?

    E-Print Network [OSTI]

    W. Wang; X. -W. Liu

    2008-06-13T23:59:59.000Z

    A thorough critical literature survey has been carried out for reliable measurements of oxygen and neon abundances of planetary nebulae (PNe) and HII regions. By contrasting the results of PNe and of HII regions, we aim to address the issues of the evolution of oxygen and neon in the interstellar medium (ISM) and in the late evolutionary phases of low- and intermediate-mass stars (LIMS), as well as the currently hotly disputed solar Ne/O abundance ratio. Through the comparisons, we find that neon abundance and Ne/O ratio increase with increasing oxygen abundance in both types of nebulae, with positive correlation coefficients larger than 0.75. The correlations suggest different enrichment mechanisms for oxygen and neon in the ISM, in the sense that the growth of neon is delayed compared to oxygen. The differences of abundances between PNe and HII regions, are mainly attributed to the results of nucleosynthesis and dredge-up processes that occurred in the progenitor stars of PNe. We find that both these alpha-elements are significantly enriched at low metallicity (initial oxygen abundance oxygen in intermediate mass stars (IMS) of low initial metallicities and in more massive stars, a conjecture that requires verification by further theoretical studies. This result also strongly suggests that both the solar neon abundance and the Ne/O ratio should be revised upwards by ~0.22 dex from the Asplund, Grevesse & Sauval values or by ~0.14 dex from the Grevesse & Sauval values.

  6. LEXICAL DECISION IN A PHONOLOGICALLY SHALLOW ORTHOGRAPHY* G Lukatela+, Do Popadic+, P. Ognjenovic+, and Mo To Turvey++

    E-Print Network [OSTI]

    +, and Mo To Turvey++ Abstracto The Serbo-Croatian language is written in two alphabets, Roman and Cyrillic shallow writing systems of Serbo-Croatian, lex ical decision proceeds with reference to the phonology

  7. Performance of ZnMoO4 crystal as cryogenic scintillating bolometer to search for double beta decay of molybdenum

    E-Print Network [OSTI]

    L. Gironi; C. Arnaboldi; J. W. Beeman; O. Cremonesi; F. A. Danevich; V. Ya. Degoda; L. I. Ivleva; L. L. Nagornaya; M. Pavan; G. Pessina; S. Pirro; V. I. Tretyak; I. A. Tupitsyna

    2010-10-01T23:59:59.000Z

    Zinc molybdate (ZnMoO4) single crystals were grown for the first time by the Czochralski method and their luminescence was measured under X ray excitation in the temperature range 85-400 K. Properties of ZnMoO4 crystal as cryogenic low temperature scintillator were checked for the first time. Radioactive contamination of the ZnMoO4 crystal was estimated as <0.3 mBq/kg (228-Th) and 8 mBq/kg (226-Ra). Thanks to the simultaneous measurement of the scintillation light and the phonon signal, the alpha particles can be discriminated from the gamma/beta interactions, making this compound extremely promising for the search of neutrinoless Double Beta Decay of 100-Mo. We also report on the ability to discriminate the alpha-induced background without the light measurement, thanks to a different shape of the thermal signal that characterizes gamma/beta and alpha particle interactions.

  8. High yield production of inorganic graphene-like materials (MoS?, WS?, BN) through liquid exfoliation testing key parameters

    E-Print Network [OSTI]

    Pu, Fei, S.B. Massachusetts Institute of Technology

    2012-01-01T23:59:59.000Z

    Inorganic graphene-like materials such as molybdenum disulfide (MoS?), tungsten sulfide (WS?), and boron nitride (BN) are known to have electronic properties. When exfoliated into layers and casted onto carbon nanofilms, ...

  9. Two photon absorption and its saturation of WS2 and MoS2 monolayer and few-layer films

    E-Print Network [OSTI]

    Zhang, Saifeng; McEvoy, Niall; O'Brien, Maria; Winters, Sinad; Berner, Nina C; Yim, Chanyoung; Zhang, Xiaoyan; Chen, Zhanghai; Zhang, Long; Duesberg, Georg S; Wang, Jun

    2015-01-01T23:59:59.000Z

    The optical nonlinearity of WS2, MoS2 monolayer and few-layer films was investigated using the Z-scan technique with femtosecond pulses from the visible to the near infrared. The dependence of nonlinear absorption of the WS2 and MoS2 films on layer number and excitation wavelength was studied systematically. WS2 with 1~3 layers exhibits a giant two-photon absorption (TPA) coefficient. Saturation of TPA for WS2 with 1~3 layers and MoS2 with 25~27 layers was observed. The giant nonlinearity of WS2 and MoS2 is attributed to two dimensional confinement, a giant exciton effect and the band edge resonance of TPA.

  10. Quantitative Prediction of Surface Segregation in Bimetallic Pt-MAlloy Nanoparticles (M=Ni, Re, Mo)

    SciTech Connect (OSTI)

    Wang, Guofeng; Van Hove, Michel A.; Ross, Phil N.; Baskes,Michael I.

    2005-06-20T23:59:59.000Z

    This review addresses the issue of surface segregation inbimetallic alloy nanoparticles, which are relevant to heterogeneouscatalysis, in particular for electro-catalysts of fuel cells. We describeand discuss a theoretical approach to predicting surface segregation insuch nanoparticles by using the Modified Embedded Atom Method and MonteCarlo simulations. In this manner it is possible to systematicallyexplore the behavior of such nanoparticles as a function of componentmetals, composition, and particle size, among other variables. We choseto compare Pt75Ni25, Pt75Re25, and Pt80Mo20 alloys as example systems forthis discussion, due to the importance of Pt in catalytic processes andits high-cost. It is assumed that the equilibrium nanoparticles of thesealloys have a cubo-octahedral shape, the face-centered cubic lattice, andsizes ranging from 2.5 nm to 5.0 nm. By investigating the segregation ofPt atoms to the surfaces of the nanoparticles, we draw the followingconclusions from our simulations at T= 600 K. (1) Pt75Ni25 nanoparticlesform a surface-sandwich structure in which the Pt atoms are stronglyenriched in the outermost and third layers while the Ni atoms areenriched in the second layer. In particular, a nearly pure Pt outermostsurface layer can be achieved in those nanoparticles. (2) EquilibriumPt75Re25 nanoparticles adopt a core-shell structure: a nearly pure Ptshell surrounding a more uniform Pt-Re core. (3) In Pt80Mo20nanoparticles, the facets are fully occupied by Pt atoms, the Mo atomsonly appear at the edges and vertices, and the Pt and Mo atoms arrangethemselves in an alternating sequence along the edges and vertices. Oursimulations quantitatively agree with previous experimental andtheoretical results for the extended surfaces of Pt-Ni, Pt-Re, and Pt-Moalloys. We further discuss the reasons for the different types of surfacesegregation found in the different alloys, and some of theirimplications.

  11. Co-Rolled U10Mo/Zirconium-Barrier-Layer Monolithic Fuel Foil Fabrication Process

    SciTech Connect (OSTI)

    G. A. Moore; M. C. Marshall

    2010-01-01T23:59:59.000Z

    Integral to the current UMo fuel foil processing scheme being developed at Idaho National Laboratory (INL) is the incorporation of a zirconium barrier layer for the purpose of controlling UMo-Al interdiffusion at the fuel-meat/cladding interface. A hot co-rolling process is employed to establish a ~25-m-thick zirconium barrier layer on each face of the ~0.3-mm-thick U10Mo fuel foil.

  12. An internship with San Tomas hunting camp Freeport-McMoRan, Inc.

    E-Print Network [OSTI]

    Huggins, J. Grant

    1986-01-01T23:59:59.000Z

    An Internship with San Tomas Hunting Camp Freeport~NoRan, Inc. : A PRCFESSIQRAL PAPER by J. Grant Huggine Submitted to the College of Agriculture of Texas AN University in Rmrtial fulfillment of the requirements for the degree of NASTER GF... AGRICULTURE December 1986 Najor Subject: Wildlife Science Department of Wildife and Fisheries Sciences An Internship with San Tomas Hunting Camp Fr eeport-McMoRan, Inc. by J. Grant Huggins Approved as to style and content by: Wallace G. Klussmann...

  13. Continuing investigations for technology assessment of /sup 99/Mo production from LEU (low enriched Uranium) targets

    SciTech Connect (OSTI)

    Vandergrift, G.F.; Kwok, J.D.; Marshall, S.L.; Vissers, D.R.; Matos, J.E.

    1987-01-01T23:59:59.000Z

    Currently much of the world's supply of /sup 99m/Tc for medical purposes is produced from /sup 99/Mo derived from the fissioning of high enriched uranium (HEU). The need for /sup 99m/Tc is continuing to grow, especially in developing countries, where needs and national priorities call for internal production of /sup 99/Mo. This paper presents the results of our continuing studies on the effects of substituting low enriched Uranium (LEU) for HEU in targets for the production of fission product /sup 99/Mo. Improvements in the electrodeposition of thin films of uranium metal are reported. These improvements continue to increase the appeal for the substitution of LEU metal for HEU oxide films in cylindrical targets. The process is effective for targets fabricated from stainless steel or hastaloy. A cost estimate for setting up the necessary equipment to electrodeposit uranium metal on cylindrical targets is reported. Further investigations on the effect of LEU substitution on processing of these targets are also reported. Substitution of uranium silicides for the uranium-aluminum alloy or uranium aluminide dispersed fuel used in other current target designs will allow the substitution of LEU for HEU in these targets with equivalent /sup 99/Mo-yield per target and no change in target geometries. However, this substitution will require modifications in current processing steps due to (1) the insolubility of uranium silicides in alkaline solutions and (2) the presence of significant quantities of silicate in solution. Results to date suggest that both concerns can be handled and that substitution of LEU for HEU can be achieved.

  14. AutoMoDe - Model-Based Development of Automotive Software

    E-Print Network [OSTI]

    Ziegenbein, Dirk; Freund, Ulrich; Bauer, Andreas; Romberg, Jan; Schatz, Bernhard

    2011-01-01T23:59:59.000Z

    This paper describes first results from the AutoMoDe (Automotive Model-Based Development) project. The overall goal of the project is to develop an integrated methodology for model-based development of automotive control software, based on problem-specific design notations with an explicit formal foundation. Based on the existing AutoFOCUS framework, a tool prototype is being developed in order to illustrate and validate the key elements of our approach.

  15. Mo-Al{sub 2}O{sub 3} cermet research and development

    SciTech Connect (OSTI)

    Glass, S.J.; Monroe, S.L.; Stephens, J.J.; Moore, R.H. [and others

    1997-08-01T23:59:59.000Z

    This report describes the results to date of a program that was initiated to predict and measure residual stresses in Mo-Al{sub 2}O{sub 3} cermet-containing components and to develop new materials and processes that would lead to the reduction or elimination of the thermal mismatch stresses. The period of performance includes work performed CY95-97. Excessive thermal mismatch stresses had produced cracking in some cermet-containing neutron tube components. This cracking could lead to a loss of hermeticity or decreased tube reliability. Stress predictions were conducted using finite element models of the various components, along with the thermal coefficient of expansion (CTE), Young`s modulus, and strength properties. A significant portion of the program focused on the property measurements for the existing cermet materials, processing conditions, and the measurement technique. The effects of differences in the properties on the predicted residual stresses were calculated for existing designs. Several potential approaches were evaluated for reducing the residual stresses and cracking in cermet-containing parts including reducing the Mo content of the cermet, substituting a ternary alloy with a better CTE match with alumina, and substituting Nb for Mo. Processing modifications were also investigated for minimizing warpage that occurs during sintering due to differential sintering. These modifications include changing the pressing of the 94ND2 alumina and changing to a 96% alumina powder from AlSiMag.

  16. Effect of heat treatment on the mechanical properties of modified 9Cr-1Mo steel

    SciTech Connect (OSTI)

    Sultan F. Alsagabi; Triratna Shrestha; Indrajit Charit; Gabriel P. Potirniche; Michael V. Glazoff

    2014-09-01T23:59:59.000Z

    The modified 9Cr-1Mo steel (Grade 91) is a material of choice in fossil-fuel-fired power plants with increased efficiency, service life, and reduction in emission of greenhouse gases. It is also considered a prospective material for the Next Generation Nuclear Power Plant for application in reactor pressure vessels at temperatures up to 650C. In this paper, heat treatment of the modified 9Cr-1Mo steel was studied by normalizing and tempering the steel at various temperatures and times, with the ultimate goal of improving its creep resistance and optimizing material hardness. The microstructural evolution of the heat treated steels was correlated with the differential scanning calorimetric results. Optical microscopy, scanning and transmission electron microscopy in conjunction with microhardness profiles and calorimetric plots were used to understand the evolution of microstructure including precipitate structures in modified 9Cr-1Mo steel and relate it to the mechanical behavior of the steel. Thermo- CalcTM calculations were used to support experimental work and provide guidance in terms of the precipitate stability and microstructural evolution. Furthermore, the carbon isopleth and temperature dependencies of the volume fraction of different precipitates were constructed. The predicted and experimentally observed results were found to be in good agreement.

  17. Evolution of collectivity along the N=Z line: The {sup 84}Mo nucleus

    SciTech Connect (OSTI)

    Bucurescu, D.; Ur, C.A.; Marginean, N.; Ionescu-Bujor, M.; Iordachescu, A.; Petrache, C.M. [Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest (Romania)] [Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest (Romania); Ur, C.A; Bazzacco, D.; Lunardi, S.; Petrache, C.M.; Brandolini, F.; Falconi, G.; Lenzi, S.M.; Venturelli, R. [Dipartimento di Fisica dellUniversita and INFN, Sezione di Padova, Padova (Italy)] [Dipartimento di Fisica dellUniversita and INFN, Sezione di Padova, Padova (Italy); Napoli, D.R.; de Angelis, G.; Gadea, A.; Foltescu, D.; Farnea, E.; Podolyak, Zs.; De Poli, M. [INFN, Laboratori Nazionali di Legnaro, Legnaro (Italy)] [INFN, Laboratori Nazionali di Legnaro, Legnaro (Italy); Rao, M.N. [Universidade de Sao Paolo, Sao Paolo, Brasil (Brazil)] [Universidade de Sao Paolo, Sao Paolo, Brasil (Brazil)

    1997-11-01T23:59:59.000Z

    The reaction {sup 58}Ni({sup 28}Si,2n{gamma}) at 90 MeV incident energy has been used to populate the N=Z nucleus {sup 84}Mo. The GASP array was used together with the ISIS Silicon ball, which allowed a subtraction of the charged particle channels in the {gamma}-{gamma} coincidences. The only known transition 2{sub 1}{sup +}{r_arrow}0{sub 1}{sup +} of 443.8 keV in {sup 84}Mo has been found in coincidence with a {gamma} ray of 673.5{plus_minus}0.4 keV which was assigned as the second (4{sub 1}{sup +}{r_arrow}2{sub 1}{sup +}) yrast transition. The behavior of the resulting yrast line indicates that {sup 84}Mo is a transitional nucleus. The correlation between the excitation energies of the 2{sub 1}{sup +} and 4{sub 1}{sup +} levels of the N=Z nuclei reveals a systematic deviation from the average behavior defined by all collective even-even nuclei. {copyright} {ital 1997} {ital The American Physical Society}

  18. Superconducting and structural properties of {delta}-MoC{sub 0.681} cubic molybdenum carbide phase

    SciTech Connect (OSTI)

    Sathish, C.I. [Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Hokkaido 060-0810 (Japan) [Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Hokkaido 060-0810 (Japan); Superconducting Properties Unit, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan); Guo, Yanfeng, E-mail: GUO.Yanfeng@nims.go.jp [Superconducting Properties Unit, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan)] [Superconducting Properties Unit, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan); Wang, Xia [Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Hokkaido 060-0810 (Japan) [Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Hokkaido 060-0810 (Japan); Superconducting Properties Unit, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan); Tsujimoto, Yoshihiro [International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan)] [International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan); Li, Jun [Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Hokkaido 060-0810 (Japan) [Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Hokkaido 060-0810 (Japan); Superconducting Properties Unit, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan); Zhang, Shoubao [International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan)] [International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan); Matsushita, Yoshitaka [Synchrotron X-ray Station at SPring-8, National Institute for Materials Science, 1-1-1 Kouto, Sayo-cho, Hyogo 679-5148 (Japan)] [Synchrotron X-ray Station at SPring-8, National Institute for Materials Science, 1-1-1 Kouto, Sayo-cho, Hyogo 679-5148 (Japan); Shi, Youguo; Tian, Huanfang; Yang, Huaixin; Li, Jianqi [Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China)] [Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China); Yamaura, Kazunari, E-mail: YAMAURA.Kazunari@nims.go.jp [Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Hokkaido 060-0810 (Japan) [Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Hokkaido 060-0810 (Japan); Superconducting Properties Unit, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan)

    2012-12-15T23:59:59.000Z

    The superconducting and lattice properties of {delta}-MoC{sub 0.681} were studied by electromagnetic measurements, synchrotron X-ray diffraction, neutron diffraction, and electron diffraction. The superconducting properties (T{sub c}=12 K) of {delta}-MoC{sub 0.681} were well characterized by a weak coupling model. The carbon vacancies present in the host cubic structure were found to be robust, although the material was synthesized from stoichiometric carbon and Mo powder under a high-pressure of 6 GPa. A thermodynamically-stable structure with ordered vacancies did not account for the robust features of {delta}-MoC{sub 0.681} since the vacancies are unlikely to be ordered in long range in the host structure. A model based on inherent phonon instability theoretically predicted for a stoichiometric MoC phase might be responsible for the robust features of {delta}-MoC{sub 0.681}. - Graphical Abstract: The cubic molybdenum carbide shows an excellent superconductivity with robust carbon vacancies. Inherent phonon instability theoretically predicted for a stoichiometric MoC phase might be responsible for the vacancies rather than a thermodynamically-stable structure with vacancies ordering. Highlights: Black-Right-Pointing-Pointer The 12 K superconductivity is well characterized by a weakly coupling model. Black-Right-Pointing-Pointer Carbon vacancies are robust and disordered in the cubic host structure. Black-Right-Pointing-Pointer Inherent phonon instability might be responsible for the robust carbon vacancies in {delta}-MoC{sub 0.681}.

  19. Low-frequency 1/f noise in MoS{sub 2} transistors: Relative contributions of the channel and contacts

    SciTech Connect (OSTI)

    Renteria, J.; Jiang, C. [Nano-Device Laboratory, Department of Electrical Engineering, Bourns College of Engineering, University of California Riverside, Riverside, California 92521 (United States); Samnakay, R. [Materials Science and Engineering Program, Bourns College of Engineering, University of California Riverside, Riverside, California 92521 (United States); Rumyantsev, S. L. [Department of Electrical, Computer, and Systems Engineering, Center for Integrated Electronics, Rensselaer Polytechnic Institute, Troy, New York 12180 (United States); Ioffe Physical-Technical Institute, St. Petersburg 194021 (Russian Federation); Goli, P.; Balandin, A. A., E-mail: balandin@ee.ucr.edu [Nano-Device Laboratory, Department of Electrical Engineering, Bourns College of Engineering, University of California Riverside, Riverside, California 92521 (United States); Materials Science and Engineering Program, Bourns College of Engineering, University of California Riverside, Riverside, California 92521 (United States); Shur, M. S. [Department of Electrical, Computer, and Systems Engineering, Center for Integrated Electronics, Rensselaer Polytechnic Institute, Troy, New York 12180 (United States)

    2014-04-14T23:59:59.000Z

    We report on the results of the low-frequency (1/f, where f is frequency) noise measurements in MoS{sub 2} field-effect transistors revealing the relative contributions of the MoS{sub 2} channel and Ti/Au contacts to the overall noise level. The investigation of the 1/f noise was performed for both as fabricated and aged transistors. It was established that the McWhorter model of the carrier number fluctuations describes well the 1/f noise in MoS{sub 2} transistors, in contrast to what is observed in graphene devices. The trap densities extracted from the 1/f noise data for MoS{sub 2} transistors, are 2??10{sup 19}?eV{sup ?1}cm{sup ?3} and 2.5??10{sup 20}?eV{sup ?1}cm{sup ?3} for the as fabricated and aged devices, respectively. It was found that the increase in the noise level of the aged MoS{sub 2} transistors is due to the channel rather than the contact degradation. The obtained results are important for the proposed electronic applications of MoS{sub 2} and other van der Waals materials.

  20. Monte Carlo calculations for reference dosimetry of electron beams with the PTW Roos and NE2571 ion chambers

    SciTech Connect (OSTI)

    Muir, B. R., E-mail: bmuir@physics.carleton.ca; Rogers, D. W. O., E-mail: drogers@physics.carleton.ca [Physics Department, Carleton Laboratory for Radiotherapy Physics, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6 (Canada)] [Physics Department, Carleton Laboratory for Radiotherapy Physics, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6 (Canada)

    2013-12-15T23:59:59.000Z

    Purpose: To investigate recommendations for reference dosimetry of electron beams and gradient effects for the NE2571 chamber and to provide beam quality conversion factors using Monte Carlo simulations of the PTW Roos and NE2571 ion chambers. Methods: The EGSnrc code system is used to calculate the absorbed dose-to-water and the dose to the gas in fully modeled ion chambers as a function of depth in water. Electron beams are modeled using realistic accelerator simulations as well as beams modeled as collimated point sources from realistic electron beam spectra or monoenergetic electrons. Beam quality conversion factors are calculated with ratios of the doses to water and to the air in the ion chamber in electron beams and a cobalt-60 reference field. The overall ion chamber correction factor is studied using calculations of water-to-air stopping power ratios. Results: The use of an effective point of measurement shift of 1.55 mm from the front face of the PTW Roos chamber, which places the point of measurement inside the chamber cavity, minimizes the difference betweenR{sub 50}, the beam quality specifier, calculated from chamber simulations compared to that obtained using depth-dose calculations in water. A similar shift minimizes the variation of the overall ion chamber correction factor with depth to the practical range and reduces the root-mean-square deviation of a fit to calculated beam quality conversion factors at the reference depth as a function of R{sub 50}. Similarly, an upstream shift of 0.34 r{sub cav} allows a more accurate determination of R{sub 50} from NE2571 chamber calculations and reduces the variation of the overall ion chamber correction factor with depth. The determination of the gradient correction using a shift of 0.22 r{sub cav} optimizes the root-mean-square deviation of a fit to calculated beam quality conversion factors if all beams investigated are considered. However, if only clinical beams are considered, a good fit to results for beam quality conversion factors is obtained without explicitly correcting for gradient effects. The inadequacy of R{sub 50} to uniquely specify beam quality for the accurate selection of k{sub Q} factors is discussed. Systematic uncertainties in beam quality conversion factors are analyzed for the NE2571 chamber and amount to between 0.4% and 1.2% depending on assumptions used. Conclusions: The calculated beam quality conversion factors for the PTW Roos chamber obtained here are in good agreement with literature data. These results characterize the use of an NE2571 ion chamber for reference dosimetry of electron beams even in low-energy beams.

  1. Traces on ion yields and electron spectra of Ar inner-shell hollow states with Free-Electron Lasers

    E-Print Network [OSTI]

    Wallis, A O G; Emmanouilidou, A

    2015-01-01T23:59:59.000Z

    We explore the formation by Free-Electron-Laser radiation of Ar hollow states with two or three inner-shell holes. We find that even charged Ar ion states can be more populated than odd charged Ar ion states. This depends on the pulse intensity and the number of energetically accessible inner- shell holes. Fully accounting for fine structure, we demonstrate that one electron spectra bare the imprints of Ar hollow states with two inner-shell holes. Moreover, we show how the Auger spectra of these hollow states can be extracted from two-electron coincidence spectra.

  2. A practical grinding-assisted dry synthesis of nanocrystalline NiMoO{sub 4} polymorphs for oxidative dehydrogenation of propane

    SciTech Connect (OSTI)

    Chen Miao, E-mail: chenmiao@sinochem.com [Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, Shanghai 200433 (China); Zhejiang Chemical Industry Research Institute, Hangzhou 310023 (China); Wu Jialing; Liu Yongmei [Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, Shanghai 200433 (China); Cao Yong, E-mail: yongcao@fudan.edu.cn [Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, Shanghai 200433 (China); Guo Li [Zhejiang Chemical Industry Research Institute, Hangzhou 310023 (China); He Heyong; Fan Kangnian [Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, Shanghai 200433 (China)

    2011-12-15T23:59:59.000Z

    A practical two-stage reactive grinding-assisted pathway waste-free and cost-effective for the synthesis of NiMoO{sub 4} has been successfully developed. It was demonstrated that proper design in synthetic strategy for grinding plays a crucial role in determining the ultimate polymorph of NiMoO{sub 4}. Specifically, direct grinding (DG) of MoO{sub 3} and NiO rendered {alpha}-NiMoO{sub 4} after annealing, whereas sequential grinding (SG) of the two independently pre-ground oxides followed by annealing generated {beta}-NiMoO{sub 4} solid solution. Characterizations in terms of Raman and X-ray diffraction suggest the creation of {beta}-NiMoO{sub 4} precursor in the latter alternative is the key aspect for the formation of {beta}-NiMoO{sub 4}. The DG-derived {alpha}-NiMoO{sub 4} tested by oxidative dehydrogenation of propane exhibited superior activity in contrast to its analog synthesized via conventional coprecipitation. It is suggested that the favorable chemical composition facilely obtained via grinding in contrast to that by coprecipitation was essential for achieving a more selective production of propylene. - Graphical Abstract: Grinding-assisted synthesis of NiMoO{sub 4} offers higher and more reproducible activities in contrast to coprecipitation for oxidative dehydrogenation of propane, and both {alpha}- and {beta}-NiMoO{sub 4} can be synthesized. Highlights: Black-Right-Pointing-Pointer NiMoO{sub 4} was prepared through grinding-assisted pathway. Black-Right-Pointing-Pointer Direct/sequential grinding rendered {alpha}-, {beta}-NiMoO{sub 4}, respectively. Black-Right-Pointing-Pointer Grinding-derived {alpha}-NiMoO{sub 4} showed high and reproducible activity for oxidative dehydrogenation of propane.

  3. Calibration of an ultra-low-background proportional counter for measuring {sup 37}Ar

    SciTech Connect (OSTI)

    Seifert, A.; Aalseth, C. E.; Bonicalzi, R. M.; Bowyer, T. W.; Day, A. R.; Fuller, E. S.; Haas, D. A.; Hayes, J. C.; Hoppe, E. W.; Humble, P. H.; Keillor, M. E.; LaFerriere, B. D.; Mace, E. K.; McIntyre, J. I.; Merriman, J. H.; Miley, H. S.; Myers, A. W.; Orrell, J. L.; Overman, C. T.; Panisko, M. E. [Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington, 99352 (United States)] [Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington, 99352 (United States); and others

    2013-08-08T23:59:59.000Z

    An ultra-low-background proportional counter design has been developed at Pacific Northwest National Laboratory (PNNL) using clean materials, primarily electro-chemically-purified copper. This detector, along with an ultra-low-background counting system (ULBCS), was developed to complement a new shallow underground laboratory (30 meters water-equivalent) at PNNL. The ULBCS design includes passive neutron and gamma shielding, along with an active cosmic-veto system. This system provides a capability for making ultra-sensitive measurements to support applications like age-dating soil hydrocarbons with {sup 14}C/{sup 3}H, age-dating of groundwater with {sup 39}Ar, and soil-gas assay for {sup 37}Ar to support On-Site Inspection (OSI). On-Site Inspection is a key component of the verification regime for the Comprehensive Nuclear-Test-Ban Treaty (CTBT). Measurements of radionuclides created by an underground nuclear explosion are valuable signatures of a Treaty violation. For OSI, the 35-day half-life of {sup 37}Ar, produced from neutron interactions with calcium in soil, provides both high specific activity and sufficient time for inspection before decay limits sensitivity. This work describes the calibration techniques and analysis methods developed to enable quantitative measurements of {sup 37}Ar samples over a broad range of proportional counter operating pressures. These efforts, along with parallel work in progress on gas chemistry separation, are expected to provide a significant new capability for {sup 37}Ar soil gas background studies.

  4. Transmission electron microscopy of RSP Fe/Cr/Mn/Mo/C alloy. [Fe-3 wt % Cr-2 wt % Mn-0. 5 wt % Mo, -0. 3 wt % C

    SciTech Connect (OSTI)

    Rayment, J.J.; Thomas, G.

    1982-03-01T23:59:59.000Z

    Rapid solidification processing (RSP) has been carried out on an Fe/Cr/Mn/Mo/C alloy using both electron-beam melting and piston-and-anvil techniques. Preliminary TEM results show RSP produces a refined duplex microstructure of ferrite and martensite, with a typical ferrite grain size of 0.50 - 3.0 microns. This RSP microstructure is significantly different from that observed in the conventionally austenitized and quenched alloys - a lath martensitic microstructure with thin films of retained interlath austenite. The morphological change produced by RSP is accompanied by an increase in hardness from 48R/sub c/ to 61R/sub c/ (approx. 480 to 720 VHN). It is intended to use electron-beam specimens to examine the potential beneficial effect of RSP upon sliding wear resistance and, by careful TEM studies, it will be possible to characterize the microstructure and its role in the hardness and wear behavior of the RSP alloy.

  5. Effects of Potassium Doping on CO Hydrogenation Over MoS2 Catalysts: A First-Principles Investigation

    SciTech Connect (OSTI)

    Andersen, Amity; Kathmann, Shawn M.; Lilga, Michael A.; Albrecht, Karl O.; Hallen, Richard T.; Mei, Donghai

    2014-07-01T23:59:59.000Z

    Periodic density functional theory calculations were performed to explore the effects of doping potassium (K) on the reactivity of CO hydrogenation to mixed higher alcohols over MoS2 catalysts. We found that the doped K species over the model MoS2(100) catalyst surface acts as a unique site for CO adsorption where either the K-C or the K-O bonding is allowed. The charge transfer from the K 4s electron to the conduction band of the MoS2(100) surface slightly enhances CO adsorption at the edge Mo sites. Due to the large electropositive nature, the presence of the surface K species, however, will hinder the dissociative adsorption of hydrogen. As a result, the doping K species drive CO hydrogenation selectivity toward the C2+ alcohols instead of hydrocarbons by increasing CO and decreasing hydrogen coverages on the MoS2 catalysts. To further elucidate the effect of doping K on the shifting of the selectivity toward CO hydrogenation, we calculated several key reaction steps leading to the H2CCO precursor formation, i.e., CO hydrogenation, the C-O bond scission and the C-C coupling (CH2+CO). The C-C coupling step is favorable for both the Mo and S edges. However, the undoped S edge has an overall more thermodynamically favorable reaction profile up to C-O scission compared with the Mo edge. This work was funded by a CRADA project (No. PNNL/297) with Range Fuels. The research was performed using EMSL, a national scientific user facility sponsored by the Department of Energy's Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory. The work involving the results analysis and mansucript writing was supported by the US Department of Energy, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences & Biosciences.

  6. Linking Education R&D Institutes and IndustryLinking Education, R&D Institutes and Industry l ifi E b l AR)(examples are more specific to Egypt , but many apply to AR)

    E-Print Network [OSTI]

    Abdou, Mohamed

    and Industry l ifi E b l AR)(examples are more specific to Egypt , but many apply to AR) Mohamed A. Abdou goals. The overall assessment indicates that: Egypt's current S&T system has failed to substantially impactEgypt s current S&T system has failed to substantially impact socio-economic development which

  7. Service Description Unit Rate in $ Invoice Description Database Administration (1 to 600 MB) MB/Month 0.550 DATABASE 1-600 MB/MO

    E-Print Network [OSTI]

    Service Description Unit Rate in $ Invoice Description Database Administration (1 to 600 MB) MB/Month 0.550 DATABASE 1-600 MB/MO Database Administration (601 to 950 MB) MB/Month 0.290 DATABASE 601-950 MB/MO Database Administration (951 to 3,000 MB) MB/Month 0.200 DATABASE 951-3,000 MB/MO Database

  8. Service Description Unit Rate in $ Invoice Description Database Administration (1 to 600 MB) MB/Month 0.500 DATABASE 1-600 MB/MO

    E-Print Network [OSTI]

    Service Description Unit Rate in $ Invoice Description Database Administration (1 to 600 MB) MB/Month 0.500 DATABASE 1-600 MB/MO Database Administration (601 to 950 MB) MB/Month 0.265 DATABASE 601-950 MB/MO Database Administration (951 to 3,000 MB) MB/Month 0.175 DATABASE 951-3,000 MB/MO Database

  9. Investigation of thermonuclear $^{18}$Ne($?$,$p$)$^{21}$Na rate via resonant elastic scattering of $^{21}$Na+$p$

    E-Print Network [OSTI]

    L. Y. Zhang; J. J. He; A. Parikh; S. W. Xu; H. Yamaguchi; D. Kahl; S. Kubono; P. Mohr; J. Hu; P. Ma; S. Z. Chen; Y. Wakabayashi; H. W. Wang; W. D. Tian; R. F. Chen; B. Guo; T. Hashimoto; Y. Togano; S. Hayakawa; T. Teranishi; N. Iwasa; T. Yamada; T. Komatsubara; Y. H. Zhang; X. H. Zhou

    2014-03-19T23:59:59.000Z

    The $^{18}$Ne($\\alpha$,$p$)$^{21}$Na reaction is thought to be one of the key breakout reactions from the hot CNO cycles to the rp-process in type I x-ray bursts. In this work, the resonant properties of the compound nucleus $^{22}$Mg have been investigated by measuring the resonant elastic scattering of $^{21}$Na+$p$. An 89 MeV $^{21}$Na radioactive beam delivered from the CNS Radioactive Ion Beam Separator bombarded an 8.8 mg/cm$^2$ thick polyethylene (CH$_{2}$)$_{n}$ target. The $^{21}$Na beam intensity was about 2$\\times$10$^{5}$ pps, with a purity of about 70% on target. The recoiled protons were measured at the center-of-mass scattering angles of $\\theta_{c.m.}$$\\approx$175.2${^\\circ}$, 152.2${^\\circ}$, and 150.5${^\\circ}$ by three sets of $\\Delta E$-$E$ telescopes, respectively. The excitation function was obtained with the thick-target method over energies $E_x$($^{22}$Mg)=5.5--9.2 MeV. In total, 23 states above the proton-threshold in $^{22}$Mg were observed, and their resonant parameters were determined via an $R$-matrix analysis of the excitation functions. We have made several new $J^{\\pi}$ assignments and confirmed some tentative assignments made in previous work. The thermonuclear $^{18}$Ne($\\alpha$,$p$)$^{21}$Na rate has been recalculated based on our recommended spin-parity assignments. The astrophysical impact of our new rate has been investigated through one-zone postprocessing x-ray burst calculations. We find that the $^{18}$Ne($\\alpha$,$p$)$^{21}$Na rate significantly affects the peak nuclear energy generation rate, reaction fluxes, as well as the onset temperature of this breakout reaction in these astrophysical phenomena.

  10. Ion mass spectrometry investigations of the discharge during reactive high power pulsed and direct current magnetron sputtering of carbon in Ar and Ar/N{sub 2}

    SciTech Connect (OSTI)

    Schmidt, S.; Greczynski, G.; Jensen, J.; Hultman, L. [Thin Film Physics Div., Department of Physics (IFM), Linkoeping University, SE-581 83 (Sweden); Czigany, Zs. [Institute of Technical Physics and Materials Science, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Konkoly Thege Miklos ut 29-33. H-1121 Budapest (Hungary)

    2012-07-01T23:59:59.000Z

    Ion mass spectrometry was used to investigate discharges formed during high power impulse magnetron sputtering (HiPIMS) and direct current magnetron sputtering (DCMS) of a graphite target in Ar and Ar/N{sub 2} ambient. Ion energy distribution functions (IEDFs) were recorded in time-averaged and time-resolved mode for Ar{sup +}, C{sup +}, N{sub 2}{sup +}, N{sup +}, and C{sub x}N{sub y}{sup +} ions. An increase of N{sub 2} in the sputter gas (keeping the deposition pressure, pulse width, pulse frequency, and pulse energy constant) results for the HiPIMS discharge in a significant increase in C{sup +}, N{sup +}, and CN{sup +} ion energies. Ar{sup +}, N{sub 2}{sup +}, and C{sub 2}N{sup +} ion energies, in turn, did not considerably vary with the changes in working gas composition. The HiPIMS process showed higher ion energies and fluxes, particularly for C{sup +} ions, compared to DCMS. The time evolution of the plasma species was analyzed for HiPIMS and revealed the sequential arrival of working gas ions, ions ejected from the target, and later during the pulse-on time molecular ions, in particular CN{sup +} and C{sub 2}N{sup +}. The formation of fullerene-like structured CN{sub x} thin films for both modes of magnetron sputtering is explained by ion mass-spectrometry results and demonstrated by transmission electron microscopy as well as diffraction.

  11. Electron-Transfer from H-2 and Ar to Stored Multiply Charged Argon Ions Produced by Synchrotron Radiation

    E-Print Network [OSTI]

    Kravis, S. D.; Church, David A.; Johnson, B. M.; Meron, M.; Jones, K. W.; Levin, J. C.; Sellin, I. A.; Azuma, Y.; Berrahmansour, N.; Berry, H. G.; Druetta, M.

    1992-01-01T23:59:59.000Z

    -shell photoionization of Ar atoms, using broadband synchrotron x-ray radiation. K-electron removal resulted in vacancy cascading, yielding a distribution of argon-ion charge states peaked near Ar4+. The stored ion gas had an initial temperature near 480 K. The basic...

  12. Polymorphisms of the acid sensing histidine kinase gene arsS in Helicobacter pylori populations from anatomically distinct gastric sites

    E-Print Network [OSTI]

    Forsyth, Mark

    Polymorphisms of the acid sensing histidine kinase gene arsS in Helicobacter pylori populations 2012 Available online 30 August 2012 Keywords: Helicobacter pylori arsS Polymorphism Homopolymeric as environmental or host conditions change. Unusual among Helicobacter pylori phase variable or contingency genes

  13. Electron-Transfer from H-2 and Ar to Stored Multiply Charged Argon Ions Produced by Synchrotron Radiation

    E-Print Network [OSTI]

    Kravis, S. D.; Church, David A.; Johnson, B. M.; Meron, M.; Jones, K. W.; Levin, J. C.; Sellin, I. A.; Azuma, Y.; Berrahmansour, N.; Berry, H. G.; Druetta, M.

    1992-01-01T23:59:59.000Z

    -shell photoionization of Ar atoms, using broadband synchrotron x-ray radiation. K-electron removal resulted in vacancy cascading, yielding a distribution of argon-ion charge states peaked near Ar4+. The stored ion gas had an initial temperature near 480 K. The basic...

  14. Epitaxial TiN,,001... Grown and Analyzed In situ by XPS and UPS. II. Analysis of Ar

    E-Print Network [OSTI]

    Gall, Daniel

    Epitaxial TiN,,001... Grown and Analyzed In situ by XPS and UPS. II. Analysis of Ar Sputter Etched and UPS were used to study epitaxial TiN 001 layers grown in situ which were Ar sputter etched. The films Host Material: epitaxial TiN(001) thin film sputter etched Instrument: Physical Electronics, Inc. 5400

  15. Excitation functions for the reactions of Ar^+ with CH4, CD4, and CH2D2

    E-Print Network [OSTI]

    Wyatt, J. R.; Strattan, L. W.; Chivalak, S.; Hierl, Peter M.

    1975-01-01T23:59:59.000Z

    Integral reaction cross sections as a function of initial translational energy (0.430 eV c.m.) are reported for isotopic variants of the exoergic ion?molecule reaction Ar++CH4 ? ArH++CH3. The excitation functions, which maximize at about 5 e...

  16. Ar dating of Apollo 12 regolith: Implications for the age of Copernicus and the source of nonmare materials

    E-Print Network [OSTI]

    40 Ar/39 Ar dating of Apollo 12 regolith: Implications for the age of Copernicus and the source; accepted in revised form 20 September 2006 Abstract Twenty-one 2­4 mm rock samples from the Apollo 12 and source of nonmare materials at the Apollo 12 site. Among the samples analyzed are: 2 felsites, 11 KREEP

  17. Martensitic transformation behaviors of rapidly solidified TiNiMo powders

    SciTech Connect (OSTI)

    Kim, Yeon-wook, E-mail: ywk@kmu.ac.kr [Department of Advanced Materials, Keimyung University, 1000 Shindang-dong, Dalseo-gu, Daegu 704-701 (Korea, Republic of)] [Department of Advanced Materials, Keimyung University, 1000 Shindang-dong, Dalseo-gu, Daegu 704-701 (Korea, Republic of)

    2012-10-15T23:59:59.000Z

    For the fabrication of bulk near-net-shape shape memory alloys and porous metallic biomaterials, consolidation of TiNiMo alloy powders is more useful than that of elemental powders of Ti, Ni and Mo. Ti{sub 50}Ni{sub 49.9}Mo{sub 0.1} shape memory alloy powders were prepared by gas atomization, and transformation temperatures and microstructures of those powders were investigated as a function of powder size. XRD analysis showed that the B2RB19 martensitic transformation occurred in powders smaller than 150 ?m. According to DSC analysis of the as-atomized powders, the B2R transformation temperature (T{sub R}) of the 2550 ?m powders was 18.4 C. The T{sub R} decreased with increasing powder size, however, the difference in T{sub R} between 2550 ?m powders and 100150 ?m powders is only 1 C. Evaluation of powder microstructures was based on SEM examination of the surface and the polished and etched powder cross sections and the typical images of the rapidly solidified powders showed cellular morphology. Porous cylindrical foams of 10 mm diameter and 1.5 mm length were fabricated by spark plasma sintering (SPS) at 800 C and 5 MPa. Finally these porous TiNi alloy samples are heat-treated for 1 h at 850 C, and then quenched in ice water. The bulk samples have 23% porosity and 4.6 g/cm{sup 3} density and their T{sub R} is 17.8 C.

  18. Numerical analysis of similarity of barrier discharges in the 0.95 Ne/0.05 Xe mixture

    SciTech Connect (OSTI)

    Avtaeva, S. V.; Kulumbaev, E. B. [Kyrgyz-Russian Slavic University (Kyrgyzstan)

    2009-04-15T23:59:59.000Z

    Established dynamic regimes of similar (with a scale factor of 10) barrier discharges in the 0.95 Ne/0.05 Xe mixture are simulated in a one-dimensional drift-diffusion model. The similarity is examined of barrier discharges excited in gaps of lengths 0.4 and 4 mm at gas pressures of 350 and 35 Torr and dielectric layer thicknesses of 0.2 and 2 mm, the frequencies of the 400-V ac voltage applied to the discharge electrodes being 100 and 10 kHz, respectively.

  19. Using Qualified Energy Conservation Bonds (QECBs) to Fund a Residential Energy Efficiency Loan Program: Case Study on Saint Louis County, MO

    E-Print Network [OSTI]

    Zimring, Mark

    2012-01-01T23:59:59.000Z

    2011 Using Qualified Energy Conservation Bonds (QECBs) toCounty, MO Qualified Energy Conservation Bonds (QECBs) arerange of qualified energy conservation projects. QECBs offer

  20. COMBATING THE PURPLE BOTANICAL PLAGUE: EVALUATION OF COLLETOTRICHUM GLOEOSPORIOIDES F. SP. MICONIAE FOR BIOLOGICAL CONTROL OF MICONIA CALVESCENS IN MOOREA, FRENCH POLYNESIA

    E-Print Network [OSTI]

    Chen, Irene Y

    2009-01-01T23:59:59.000Z

    gloeosporioides, elevation, endophyte community, Moorea,occur upon contact: the endophyte fungus outcompeted theelevation gradient having 25 endophyte competition plates.

  1. Beta-decay properties of Zr and Mo neutron-rich isotopes

    E-Print Network [OSTI]

    P. Sarriguren; J. Pereira

    2010-06-08T23:59:59.000Z

    Gamow-Teller strength distributions, beta-decay half-lives, and beta-delayed neutron emission are investigated in neutron-rich Zr and Mo isotopes within a deformed quasiparticle random-phase approximation. The approach is based on a self-consistent Skyrme Hartree-Fock mean field with pairing correlations and residual separable particle-hole and particle-particle forces. Comparison with recent measurements of half-lives stresses the important role that nuclear deformation plays in the description of beta-decay properties in this mass region.

  2. Electronic structure of CdMoO{sub 4} using Compton scattering technique

    SciTech Connect (OSTI)

    Sharma, Khushboo, E-mail: khushboo.phy@gmail.com; Ahuja, B. L. [Department of Physics, University College of Science, M.L. Sukhadia University, Udaipur-313001 (India); Sahariya, Jagrati [Department of Physics, Manipal University, Jaipur-303007 (India)

    2014-04-24T23:59:59.000Z

    The first ever Compton profile of polycrystalline CdMoO{sub 4} has been measured using {sup 137}Cs spectrometer. The results are compared with theoretical Compton profiles deduced from free atom and linear combination of atomic orbitals (LCAO) methods. We have also computed the energy bands using density functional theory (DFT) within LCAO. The computed bands confirm the semiconducting behaviour of this compound. It is seen that the DFT theoretical profile (with local density approximation) gives a better agreement with the experimental Compton data than free atom Compton profile.

  3. FULL SIZE U-10MO MONOLITHIC FUEL FOIL AND FUEL PLATE FABRICATION-TECHNOLOGY DEVELOPMENT

    SciTech Connect (OSTI)

    G. A. Moore; J-F Jue; B. H. Rabin; M. J. Nilles

    2010-03-01T23:59:59.000Z

    Full-size U10Mo foils are being developed for use in high density LEU monolithic fuel plates. The application of a zirconium barrier layer too the foil is applied using a hot co-rolling process. Aluminum clad fuel plates are fabricated using Hot Isostatic Pressing (HIP) or a Friction Bonding (FB) process. An overview is provided of ongoing technology development activities, including: the co-rolling process, foil shearing/slitting and polishing, cladding bonding processes, plate forming, plate-assembly swaging, and fuel plate characterization. Characterization techniques being employed include, Ultrasonic Testing (UT), radiography, and microscopy.

  4. DOE - Office of Legacy Management -- St Louis Downtown Site - MO 02

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTableSelling Corp -K LeDowntown Site - MO 02 FUSRAP

  5. DOE - Office of Legacy Management -- St Louis University - MO 0-02

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTableSelling Corp -K LeDowntown Site - MO 02 FUSRAPSt Louis

  6. DOE - Office of Legacy Management -- United Nuclear Corp - MO 0-03

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTableSelling Corp -K LeDowntownUnited Nuclear Corp - MO 0-03

  7. Reply to the revised Comment [PRL 102, 139601; arXiv:0810.4791] on ''Dynamic Scaling of Non-Euclidean Interfaces''

    E-Print Network [OSTI]

    Carlos Escudero

    2009-06-05T23:59:59.000Z

    This is the Reply to the revised Comment [Phys. Rev. Lett. 102, 139601; arXiv:0810.4791] by Joachim Krug on our paper: C. Escudero, Phys. Rev. Lett. 100, 116101 (2008); arXiv:0804.1898.

  8. Single-crystal structure of vanadium-doped La{sub 2}Mo{sub 2}O{sub 9}

    SciTech Connect (OSTI)

    Alekseeva, O. A., E-mail: olalex@ns.crys.ras.ru; Antipin, A. M. [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation)] [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation); Gagor, A.; Pietraszko, A. [Polish Academy of Sciences, Trzebiatowski Institute of Low Temperature and Structure Research (Poland)] [Polish Academy of Sciences, Trzebiatowski Institute of Low Temperature and Structure Research (Poland); Novikova, N. E.; Sorokina, N. I. [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation)] [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation); Kharitonova, E. P.; Voronkova, V. I. [Moscow State University (Russian Federation)] [Moscow State University (Russian Federation)

    2013-11-15T23:59:59.000Z

    A high-precision X-ray diffraction study of single crystals of two compositions-La{sub 2}Mo{sub 1.78}V{sub 0.22}O{sub 8.89} and La{sub 2}Mo{sub 1.64}V{sub 0.36}O{sub 8.82}-was performed. In the vanadium-doped compounds, as in the structure of the metastable {beta}{sub ms} phase of pure La{sub 2}Mo{sub 2}O{sub 9}, the La and Mo atoms and one of the three oxygen atoms are displaced from the threefold axis, on which they are located in the high-temperature {beta} phase. The structure contains two partially occupied oxygen sites. It was shown that molybdenum atoms are partially replaced by vanadium atoms, which are not involved in the disordering, are located on the threefold axis, and are shifted toward one of the oxygen atoms. This is consistent with the temperature-induced changes in the structure of La{sub 2}Mo{sub 2}O{sub 9} and the changes in the properties of these crystals caused by the introduction of vanadium atoms into the structure.

  9. MO: ZL

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTableSelling7111AWell:F E ,"^ I ThisS11220Grand

  10. 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]

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

    2006-01-27T23:59:59.000Z

    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.

  11. 916 IEEE TRANSACTIONS ON AUDIO, SPEECH, AND LANGUAGE PROCESSING, VOL. 19, NO. 4, MAY 2011 AR-GARCH in Presence of Noise: Parameter

    E-Print Network [OSTI]

    Cohen, Israel

    916 IEEE TRANSACTIONS ON AUDIO, SPEECH, AND LANGUAGE PROCESSING, VOL. 19, NO. 4, MAY 2011 AR-GARCH (VAD) based on the autoregressive-generalized autore- gressive conditional heteroscedasticity (AR-GARCH) model. The speech signal is modeled as an AR-GARCH process in the time domain, and the likelihood ratio

  12. IEEE TRANS. AUDIO, SPEECH AND LANGUAGE PROCESSING, VOL. XX, NO. Y, MONTH 2010 1 AR-GARCH in Presence of Noise: Parameter

    E-Print Network [OSTI]

    Cohen, Israel

    IEEE TRANS. AUDIO, SPEECH AND LANGUAGE PROCESSING, VOL. XX, NO. Y, MONTH 2010 1 AR-GARCH (VAD) based on the autoregressive-generalized autore- gressive conditional heteroscedasticity (AR-GARCH) model. The speech signal is modeled as an AR-GARCH process in the time domain, and the likelihood ratio

  13. arXiv:hep-ph/0306282v127Jun2003 Neutrino Physics: an Update

    E-Print Network [OSTI]

    Washington at Seattle, University of - Department of Physics, Electroweak Interaction Research Group

    arXiv:hep-ph/0306282v127Jun2003 Neutrino Physics: an Update Wick C. Haxtona and Barry R. Holsteina recent didactic survey of neutrino physics, including new results from the Sudbury Neutrino Observatory;1 Introduction Several years ago, we authored a paper in this journal entitled "Neutrino Physics," hereafter

  14. arXiv:astro-ph/0305066v16May2003 High Energy Photons, Neutrinos and

    E-Print Network [OSTI]

    Zhang, Bing

    arXiv:astro-ph/0305066v16May2003 High Energy Photons, Neutrinos and Gravitational Waves from Gamma-Ray. of Physics Pennsylvania State University University Park, PA 16802, USA 1 Introduction A new era in Gamma-ray Burst (GRB) research opened in 1991 with the launch of the Compton Gamma-Ray Observatory (CGRO), whose

  15. arXiv:astro-ph/0009259v219Sep2000 How the Sun Shines

    E-Print Network [OSTI]

    Walter, Frederick M.

    arXiv:astro-ph/0009259v219Sep2000 How the Sun Shines John N. Bahcall What makes the sun shine? How does the sun produce the vast amount of energy necessary to support life on earth? These questions 1833 Treatise on Astronomy: The sun's rays are the ultimate source of almost every motion which takes

  16. arXiv:cond-mat/9707333v131Jul1997 Fingering Instability in Combustion

    E-Print Network [OSTI]

    Moses, Elisha

    arXiv:cond-mat/9707333v131Jul1997 Fingering Instability in Combustion O. Zik(1) , Z. Olami(2) and E quantitatively verify a model based on diffusion limited transport. Harnessing combustion is a basic element conflagrations is often determined by fundamental issues regarding the stability of combustion fronts. Although

  17. arXiv:astro-ph/0509571v119Sep2005 Gamma-Ray Burst Early Afterglows

    E-Print Network [OSTI]

    Zhang, Bing

    arXiv:astro-ph/0509571v119Sep2005 Gamma-Ray Burst Early Afterglows Bing Zhang Department of Physics's Swift Gamma-Ray Burst Explorer open a new era for the multi-wavelength study of the very early afterglow phase of gamma-ray bursts (GRBs). GRB early afterglow information is essential to explore the unknown

  18. MinErAl prEpArAtion EnginEEring

    E-Print Network [OSTI]

    Hartman, Chris

    MinErAl prEpArAtion EnginEEring College of Engineering and Mines Department of Mining 36 credits The mineral preparation engineering program offers specialization in the processes used to concentrate target minerals and remove undesir- able material from mined ore. Interdisciplinary study

  19. Sudden Lifetime Drop Phenomena and their Effective Cures in PF-ring and PF-AR

    SciTech Connect (OSTI)

    Tanimoto, Yasunori; Honda, Tohru; Uchiyama, Takashi; Nogami, Takashi [Accelerator Laboratory, High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki 305-0801 (Japan)

    2010-06-23T23:59:59.000Z

    In PF-ring and PF-AR, sudden drops in the electron beam lifetime, which are attributed to dust trapping, were frequently observed after extensive renewals of the storage rings. The reduced-lifetime state sometimes lasts for a few hours, and the mitigation of this problem was strongly demanded for stable user operations. Since a major source of dust particles was thought to be a distributed ion pump (DIP), we attempted switching the DIPs off during user operations in both the rings. As a result, occurrence of the lifetime drops was almost completely suppressed during single-bunch mode in PF-ring, while the occurrence frequency was reduced by only 38% in PF-AR. We found that the lifetime drops were sometimes accompanied by a transient increase in the vacuum pressure at some discharge-prone devices. Based on the hypothesis that the harmful dust could be generated by an electric discharge in vacuum, we attempted the conditioning of these devices in PF-AR by storing 25% higher current than usual. By combination of the DIP-OFF operation and the high-current conditioning, the occurrence frequency of the lifetime drops in PF-AR was reduced by no less than 67%.

  20. Topographie de surfaces Si(111) aprs bombardement d'ions Ar+ et recuit thermique

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    1161 Topographie de surfaces Si(111) aprs bombardement d'ions Ar+ et recuit thermique J. Faur, A du recuit ncessaire, ainsi que sur la topographie de la surface obtenue, a t mise en vidence. La de retrouver la topographie de la surface initiale : mme disposition et mme densit des marches