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1

Switching Kr/Xe Selectivity with Temperature in a Metal-Organic Framework  

Science Conference Proceedings (OSTI)

Krypton (Kr) and xenon (Xe) adsorption on two partially fluorinated metal-organic frameworks (FMOFCu and FMOFZn) with different cavity size and topologies were reported. FMOFCu shows an inversion in sorption selectivity toward Kr at temperatures below 0 C while FMOFZn does not. The 1D microtubes packed along the (101) direction connected through small bottleneck windows in FMOFCu appear to be the reason for this peculiar behavior. The FMOFCu shows an estimated Kr/Xe selectivity of 36 at 0.1 bar.

Fernandez, Carlos A.; Liu, Jian; Thallapally, Praveen K.; Strachan, Denis M.

2012-05-16T23:59:59.000Z

2

Removal of I, Rn, Xe and Kr from off gas streams using PTFE membranes  

DOE Patents (OSTI)

A process for removing I, R, Xe and Kr which involves the passage of the off gas stream through a tube-in-shell assembly, whereby the tubing is a PTFE membrane which permits the selective passages of the gases for removing and isolating the gases.

Siemer, Darryl D. (Idaho Falls, ID); Lewis, Leroy C. (Idaho Falls, ID)

1990-01-01T23:59:59.000Z

3

High-order harmonic generation in Xe, Kr, and Ar driven by a 2.1-?m source: High-order harmonic spectroscopy under macroscopic effects  

E-Print Network (OSTI)

We experimentally and numerically study the atomic response and pulse propagation effects of high-order harmonics generated in Xe, Kr, and Ar driven by a 2.1-?m infrared femtosecond light source. The light source is an ...

Hong, Kyung-Han

4

Measuring Diffusivity in Supercooled Liquid Nanoscale Films using Inert Gas Permeation: II. Diffusion of AR, KR, Xe, and CH4 through Methanol  

DOE Green Energy (OSTI)

We present an experimental technique to measure the diffusivity of supercooled liquids at temperatures near their Tg. The approach uses the permeation of inert gases through supercooled liquid overlayers as a measure of the diffusivity of the supercooled liquid itself. The desorption spectra of the probe gas is used to extract the low temperature supercooled liquid diffusivities. In the preceding companion paper, we derived equations using ideal model simulations from which the diffusivity could be extracted using the desorption peak times for isothermal or peak temperatures for TPD experiments. Here, we discuss the experimental conditions for which these equations are valid and demonstrate their utility using amorphous methanol with Ar, Kr, Xe, and CH4 as probe gases. The approach offers a new method by which the diffusivities of supercooled liquids can be measured in the experimentally challenging temperature regime near the glass transition temperature.

Matthiesen, Jesper; Smith, R. Scott; Kay, Bruce D.

2010-11-07T23:59:59.000Z

5

Experimental investigation of the chemistry of excited states of rare gases. First quarterly progress report, 15 October 1978--15 January 1979. [Kr* + Cl/sub 2/  

SciTech Connect

Analysis of XeF(B) and XeF(C) state quenching from photodissociation of XeF/sub 2/ was continued and progress was made on reactive quenching of the resonance states, Xe(/sup 3/P/sub 1/) and Kr(/sup 3/P/sub 1/). The study of the reactions of the resonance states of the rare gases was concentrated on the Kr* + Cl/sub 2/ reaction.

Setser, D.W.

1979-03-01T23:59:59.000Z

6

XeCl avalanche discharge laser employing Ar as a diluent  

DOE Patents (OSTI)

A XeCl avalanche discharge exciplex laser which uses a gaseous lasing starting mixture of: 0.2 to 0.4% chlorine donor/2.5% to 10% Xe/97.3% to 89.6% Ar) is provided. The chlorine donor normally comprises HCl but can also comprise CCl/sub 4/ BCl/sub 3/. Use of Ar as a diluent gas reduces operating pressures over other rare gas halide lasers to near atmospheric pressure, increases output lasing power of the XeCl avalanche discharge laser by 30% to exceed KrF avalanche discharge lasing outputs, and is less expensive to operate.

Sze, R.C.

1979-10-10T23:59:59.000Z

7

XeCl Avalanche discharge laser employing Ar as a diluent  

DOE Patents (OSTI)

A XeCl avalanche discharge exciplex laser which uses a gaseous lasing starting mixture of: (0.2%-0.4% chlorine donor/2.5%-10% Xe/97.3%-89.6% Ar). The chlorine donor normally comprises HCl but can also comprise CCl.sub.4 BCl.sub.3. Use of Ar as a diluent gas reduces operating pressures over other rare gas halide lasers to near atmospheric pressure, increases output lasing power of the XeCl avalanche discharge laser by 30% to exceed KrF avalanche discharge lasing outputs, and is less expensive to operate.

Sze, Robert C. (Santa Fe, NM)

1981-01-01T23:59:59.000Z

8

Cray XE6 Workshop  

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

Cray XE6 Workshop Cray XE6 Workshop February 7-8, 2011 Outline * About OpenMP * Parallel Regions * Using OpenMP on Hopper * Worksharing Constructs * Synchronization * Data Scope * Tasks * Hands-on Exercises 2 What is OpenMP * OpenMP is an industry standard API of C/C++ and Fortran for shared memory parallel programming. - OpenMP Architecture Review Board * Major compiler vendors: PGI, Cray, Intel, Oracle, HP, Fujitsu, Microsoft, AMD, IBM, NEC, Texas Instrument, ... * Research institutions: cOMPunity, DOE/NASA Labs, Universities... - Current standard: 3.0, released in 2008. - 3.1 draft just came out today for public comment. 3 OpenMP Components * Compiler Directives and Clauses - Interpreted when OpenMP compiler option is turned on. - Each directive applies to the succeeding

9

Xe-135 Production from Cf-252  

Science Conference Proceedings (OSTI)

135Xe is a good indicator that fission has occurred and is a valuable isotope that helps enforce the Comprehensive Test Ban Treaty. Due to its rather short half life and minimal commercial interest, there are no known sources where 135Xe can be purchased. Readily available standards of this isotope for calibrating collection and analytical techniques would be very useful. 135Xe can be produced in the fissioning of actinide isotopes, or by neutron capture on 134Xe. Since the neutron capture cross section of 134Xe is 3 mB, neutron capture is a low yield, though potentially useful, production route. 135Xe is also produced by spontaneous fission of 252Cf. 252Cf has a spontaneous fission rate of about 6 x 1011 s-1g-1. The cumulative yield from the spontaneous fission of 252Cf is 4.19%; and the competing neutron capture reaction that depletes 135Xe in thermal reactor systems is negligible because the neutron capture cross-section is low for fast fission neutrons. At the INL, scientists have previously transported fission products from an electroplated 252Cf thin source for the measurement of nuclear data of short-lived fission products using a technique called He-Jet collection. We have applied a similar system to the collection of gaseous 135Xe, in order to produce valuable standards of this isotope.

C. A. McGrath; T. P. Houghton; J. K. Pfeiffer; R. K. Hague

2012-03-01T23:59:59.000Z

10

High energy XeBr electric discharge laser  

DOE Patents (OSTI)

A high energy XeBr laser for producing coherent radiation at 282 nm. The XeBr laser utilizes an electric discharge as the excitation source to minimize formation of molecular ions thereby minimizing absorption of laser radiation by the active medium. Additionally, HBr is used as the halogen donor which undergoes harpooning reactions with Xe.sub.M * to form XeBr*.

Sze, Robert C. (Santa Fe, NM); Scott, Peter B. (Los Alamos, NM)

1981-01-01T23:59:59.000Z

11

Search for 2K(2?)-capture of Kr-78  

E-Print Network (OSTI)

Results of a search for Kr-78 double K-capture at the second stage of the experiment with high-pressure copper proportional counters are presented. The method is based on comparison of spectra measured with natural and enriched krypton. The total exposure of the low background measurements is for Kr-78 152 g*yr and for Kr-nat 106 g*yr. An excess of events was observed in the analysis of Kr-78 selected data collected during 2008-2010 years. This excess could correspond to a double K-capture of Kr-78 with the half-life of T_{1/2}(2K,2\

Ju. M. Gavriljuk; A. M. Gangapshev; V. V. Kazalov; V. V. Kuzminov; S. I. Panasenko; S. S. Ratkevich; D. A. Zhantudueva; S. P. Yakimenko

2011-12-05T23:59:59.000Z

12

High energy KrCl electric discharge laser  

SciTech Connect

A high energy KrCl laser for producing coherent radiation at 222 nm. Output energies on the order of 100 mJ per pulse are produced utilizing a discharge excitation source to minimize formation of molecular ions, thereby minimizing absorption of laser radiation by the active medium. Additionally, HCl is used as a halogen donor which undergoes a harpooning reaction with metastable Kr.sub.M * to form KrCl.

Sze, Robert C. (Santa Fe, NM); Scott, Peter B. (Los Alamos, NM)

1981-01-01T23:59:59.000Z

13

Formation and Incorporation Energies of Fission Gases He, Xe, and ...  

Science Conference Proceedings (OSTI)

Presentation Title, Formation and Incorporation Energies of Fission Gases He, Xe , ... nuclear fuels are bcc alloys of uranium that swell under fission conditions,...

14

Cray XE6 Architecture John Shalf NERSC XE6 User Training  

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

XE6 Architecture XE6 Architecture John Shalf NERSC XE6 User Training Feb 7, 2011 2 NERSC-6 Grace "Hopper" Cray XE6 Performance 1.2 PF Peak 1.05 PF HPL (#5) Processor AMD MagnyCours 2.1 GHz 12-core 8.4 GFLOPs/core 24 cores/node 32-64 GB DDR3-1333 per node System Gemini Interconnect (3D torus) 6392 nodes 153,408 total cores I/O 2PB disk space 70GB/s peak I/O Bandwidth Potential System Architectures What is Possible Systems 2009 2015 +1/-0 2018 +1/-0 System peak 2 Peta 100-300 Peta 1 Exa Power 6 MW ~15 MW ~20 MW System memory 0.3 PB 5 PB 64 PB (+) Node performance 125 GF 0.5 TF or 7 TF 2 TF or 10TF Node memory BW 25 GB/s 0.2TB/s or 0.5TB/s 0.4TB/s or 1TB/s Node concurrency 12 O(100) O(1k) or 10k Total Node Interconnect BW 3.5 GB/s 100-200 GB/s

15

Production I/O Characterization on the Cray XE6 | Argonne National...  

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

Production IO Characterization on the Cray XE6 Title Production IO Characterization on the Cray XE6 Publication Type Conference Paper Year of Publication 2013 Authors Carns, PH,...

16

(129)Xe NMR of Mesoporous Silicas  

DOE Green Energy (OSTI)

The porosities of three mesoporous silica materials were characterized with {sup 129}Xe NMR spectroscopy. The materials were synthesized by a sol-gel process with r = 0, 25, and 70% methanol by weight in an aqueous cetyltrimethylammonium bromide solution. Temperature dependent chemical shifts and spin lattice relaxation times reveal that xenon does not penetrate the pores of the largely disordered (r= 70%) silica. For both r = 0 and 25%, temperature dependent resonances corresponding to physisorbed xenon were observed. An additional resonance for the r = 25% sample was attributed to xenon between the disordered cylindrical pores. 2D NMR exchange experiments corroborate the spin lattice relaxation data which show that xenon is in rapid exchange between the adsorbed and the gas phase.

Anderson, M.T.; Asink, R.A.; Kneller, J.M.; Pietrass, T.

1999-04-23T23:59:59.000Z

17

Mercury: A second-generation KrF laser for inertial fusion research  

SciTech Connect

The ``Mercury`` KrF laser facility at Los Alamos is being built with the benefit of lessons learned from the Aurora KrF laser. An increased understanding of KrF laser engineering, and the designed implementation of system flexibility, will permit Mercury to serve as a testbed for a variety of advanced KrF technology concepts.

Bigio, I.J.; York, G.; McLeod, J.; Czuchlewski, J.; Rose, E.; Hanson, D.E.; Kurnit, N.A.; McCown, A.

1992-10-01T23:59:59.000Z

18

Mercury: A second-generation KrF laser for inertial fusion research  

SciTech Connect

The Mercury'' KrF laser facility at Los Alamos is being built with the benefit of lessons learned from the Aurora KrF laser. An increased understanding of KrF laser engineering, and the designed implementation of system flexibility, will permit Mercury to serve as a testbed for a variety of advanced KrF technology concepts.

Bigio, I.J.; York, G.; McLeod, J.; Czuchlewski, J.; Rose, E.; Hanson, D.E.; Kurnit, N.A.; McCown, A.

1992-01-01T23:59:59.000Z

19

Passive mode locking of a XeCl laser  

SciTech Connect

Passive mode locking of a 20-ns pulse duration XeCl laser was achieved. A modulation of 90% and less than 2-ns pulses are reported using Coumarin 1 and Auramine-0 dyes as saturable absorbers.

Efthimiopoulos, T.

1984-08-15T23:59:59.000Z

20

Driving photochemistry by clustering: The ICl-Xe case  

Science Conference Proceedings (OSTI)

We present slice imaging data demonstrating the influence of clustering on the photodissociation dynamics of a diatomic molecule: iodine monochloride (ICl) was dissociated at 235 nm in He and Xe seed gasses, probing both Cl and I photofragment energy and angular distributions. We observe that the kinetic energy releases of both Cl and I fragments change from He to Xe seeding. For Cl fragments, the seeding in Xe increases the kinetic energy release of some Cl fragments with a narrow kinetic energy distribution, and leads to some fragments with rather broad statistical distribution falling off exponentially from near-zero energies up to about 2.5 eV. Iodine fragment distribution changes even more dramatically from He to Xe seeding: sharp features essentially disappear and a broad distribution arises reaching to about 2.5 eV. Both these observations are rationalized by a simple qualitative cluster model assuming ICl dissociation inside larger xenon clusters and 'on surface' of smaller Xe species.

Glodic, Pavle [Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, Vassilika Vouton, 71110 Heraklion (Greece); Vinca Institute of Nuclear Sciences, P.O. Box 522, Belgrade 11001 (Serbia); Kartakoullis, Andreas; Kitsopoulos, Theofanis N. [Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, Vassilika Vouton, 71110 Heraklion (Greece); Department of Chemistry, University of Crete, Voutes, 71110 Heraklion (Greece); Farnik, Michal [J. Heyrovsky Institute of Physical Chemistry v.v.i., Academy of Sciences of the Czech Republic, Dolejskova 3, 18223 Prague (Czech Republic); Samartzis, Peter C. [Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, Vassilika Vouton, 71110 Heraklion (Greece)

2012-10-21T23:59:59.000Z

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


21

New Features of the Hopper XE6 - Differences from Franklin  

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

New Features of the Hopper XE6 New Features of the Hopper XE6 New Features of the Hopper XE6 - Differences from Franklin While the Franklin and Hopper systems are both have similar programming environments and user software, there are some key architectural differences between the two systems. This page describes those differences and how they may improve your productivity. More Cores per Node and Multiple Sockets per Node Hopper has a total of 24 cores on each node. With more cores per node, you may want to explore adding OpenMP to applications. Hopper also has two sockets on each compute node whereas Franklin only has one. Please see the Hopper mutli-core FAQ page for a discussion of effectively using all 24 cores per node and the Hopper configuration page for more system specification details.

22

Kr Ion Irradiation Study of the Depleted-Uranium Alloys  

SciTech Connect

Fuel development for the Reduced Enrichment Research and Test Reactor program is tasked with the development of new low-enriched uranium nuclear fuels that can be employed to replace existing highly enriched uranium fuels currently used in some research reactors throughout the world. For dispersion-type fuels, radiation stability of the fuel/cladding interaction product has a strong impact on fuel performance. Three depleted uranium alloys are cast for the radiation stability studies of the fuel/cladding interaction product using Kr ion irradiation to investigate radiation damage from fission products. SEM analysis indicates the presence of the phases of interest: U(Si, Al)3, (U, Mo)(Si, Al)3, UMo2Al20, U6Mo4Al43, and UAl4. Irradiations of TEM disc samples were conducted with 500 keV Kr ions at 200C to ion doses up to 2.5 1015 ions/cm2 (~ 10 dpa) with an Kr ion flux of 1012 ions/cm2-sec (~ 4.0 10-3 dpa/sec). Microstructural evolution of the phases relevant to fuel-cladding interaction products was investigated using transmission electron microscopy.

J. Gan; D. Keiser; B. Miller; M. Kirk; J. Rest; T. Allen; D. Wachs

2010-12-01T23:59:59.000Z

23

Kr ion irradiation study of the depleted-uranium alloys.  

Science Conference Proceedings (OSTI)

Fuel development for the reduced enrichment research and test reactor (RERTR) program is tasked with the development of new low enrichment uranium nuclear fuels that can be employed to replace existing high enrichment uranium fuels currently used in some research reactors throughout the world. For dispersion type fuels, radiation stability of the fuel-cladding interaction product has a strong impact on fuel performance. Three depleted-uranium alloys are cast for the radiation stability studies of the fuel-cladding interaction product using Kr ion irradiation to investigate radiation damage from fission products. SEM analysis indicates the presence of the phases of interest: U(Al, Si){sub 3}, (U, Mo)(Al, Si){sub 3}, UMo{sub 2}Al{sub 20}, U{sub 6}Mo{sub 4}Al{sub 43} and UAl{sub 4}. Irradiations of TEM disc samples were conducted with 500 keV Kr ions at 200 C to ion doses up to 2.5 x 10{sup 19} ions/m{sup 2} ({approx}10 dpa) with an Kr ion flux of 10{sup 16} ions/m{sup 2}/s ({approx}4.0 x 10{sup -3} dpa/s). Microstructural evolution of the phases relevant to fuel-cladding interaction products was investigated using transmission electron microscopy.

Gan, J.; Keiser, D. D.; Miller, B. D.; Kirk, M. A.; Rest, J.; Allen, T. R.; Wachs, D. M. (Materials Science Division); (INL); (Univ. of Wisconsin)

2010-12-01T23:59:59.000Z

24

Configuration of Hopper, NERSC's Cray XE6 System  

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

Configuration Configuration Configuration Hopper is NERSC's first peta-flop system, a Cray XE6, with a peak performance of 1.28 Petaflops/sec, 153,216 compute cores for running scientific applications, 217 Terabytes of memory, and 2 Petabytes of online disk storage. MC-proc.png Compute Nodes Hopper has 6,384 compute nodes made up of 2 twelve-core AMD 'MagnyCours'. Read More » login.jpg Login Nodes When you ssh to hopper.nersc.gov, you are connecting to a "login node." Read More » jaguar xt4 Interconnect A description of the custom Cray-designed network that Hopper uses for inter-node communication. Read More » xe6blade.png Support Nodes A description of other kinds of nodes included in Hopper for job launch, file systems, networking, and other services. Read More »

25

Electronic properties of Ar and Xe under pressure  

SciTech Connect

A simple model for calculating ground- and excited-state properties of molecular and rare-gas crystals is presented. The electrons are considered to be tightly bound to their molecular or atomic sites and the effects of the crystal potential, calculated with local-density functionals, are treated as a perturbation of the molecules or atoms. Results for Ar to 500 kbar show that the ground-state atoms compress as the pressure is increased and that there is a gradual increase in exciton energies. Preliminary results on ground-state Xe to 1.5 Mbar show that, to about 1 Mbar, the electronic distributions of the Xe atoms compress, but beyond that there is a slight expansion.

LeSar, R.

1983-01-01T23:59:59.000Z

26

NEUTRON REACTOR HAVING A Xe$sup 135$ SHIELD  

DOE Patents (OSTI)

Shielding for reactors of the type in which the fuel is a chain reacting liquid composition comprised essentially of a slurry of fissionable and fertile material suspended in a liquid moderator is discussed. The neutron reflector comprises a tank containing heavy water surrounding the reactor, a shield tank surrounding the reflector, a gamma ray shield surrounding said shield tank, and a means for conveying gaseous fission products, particularly Xe/sup 135/, from the reactor chamber to the shield tank, thereby serving as a neutron shield by capturing the thermalized neutrons that leak outwardly from the shield tank.

Stanton, H.E.

1957-10-29T23:59:59.000Z

27

CN He Ne Ar Kr Xe 4 0.90 :t 0.06 1.18 :t 0.02  

E-Print Network (OSTI)

t in understanding glass structures (e.g., Shackelford and Masaryk, 1978; Shackelford and Brown, 1981

Zhang, Youxue

28

Calibration of a liquid xenon detector with {sup 83}Kr{sup m}  

SciTech Connect

We report the preparation of a {sup 83}Kr{sup m} source and its use in calibrating a liquid xenon detector. {sup 83}Kr{sup m} atoms were produced through the decay of {sup 83}Rb and introduced into liquid xenon. Decaying {sup 83}Kr{sup m} nuclei were detected through liquid xenon scintillation. Conversion electrons with energies of 9.4 and 32.1 keV from the decay of {sup 83}Kr{sup m} were observed. This calibration source will allow the characterization of the response of noble liquid detectors at low energies. {sup 83}Kr{sup m} may also be useful for measuring fluid flow dynamics, both to understand purification in noble liquid-based particle detectors, as well as for studies of classical and quantum turbulence in superfluid helium.

Kastens, L. W.; Cahn, S. B.; Manzur, A.; McKinsey, D. N. [Department of Physics, Yale University, Post Office Box 208120, New Haven, CT 06520 (United States)

2009-10-15T23:59:59.000Z

29

A Search For Solar Hadronic Axions Using Kr-83  

E-Print Network (OSTI)

We introduce a new experimental method for solar hadronic axions search. It is suggested that these axions are created in the Sun during M1 transition between the first thermally excited level at 9.4 keV and the ground state in $^{83}Kr$. Our method is based on axion detection via resonant absorption process by the same nucleus in the laboratory. We use proportional gas counter filled with krypton to detect signals for axions. With this setup, target and detector are the same which increases the efficiency of the experiment. At present, an upper limit on hadronic axion mass of 5.5 keV at the 95% confidence level is obtained.

K. Jakovcic; Z. Krecak; M. Krcmar; A. Ljubicic

2004-02-23T23:59:59.000Z

30

A Search For Solar Hadronic Axions Using Kr-83  

E-Print Network (OSTI)

We introduce a new experimental method for solar hadronic axions search. It is suggested that these axions are created in the Sun during M1 transition between the first thermally excited level at 9.4 keV and the ground state in $^{83}Kr$. Our method is based on axion detection via resonant absorption process by the same nucleus in the laboratory. We use proportional gas counter filled with krypton to detect signals for axions. With this setup, target and detector are the same which increases the efficiency of the experiment. At present, an upper limit on hadronic axion mass of 5.5 keV at the 95% confidence level is obtained.

Jakovcic, K; Krcmar, M; Ljubicic, A

2004-01-01T23:59:59.000Z

31

Ba-ion extraction from a high pressure Xe gas for double-beta decay studies with EXO  

E-Print Network (OSTI)

An experimental setup is being developed to extract Ba ions from a high-pressure Xe gas environment. It aims to transport Ba ions from 10 bar Xe to vacuum conditions. The setup utilizes a converging-diverging nozzle in combination with a radio-frequency (RF) funnel to move Ba ions into vacuum through the pressure drop of several orders of magnitude. This technique is intended to be used in a future multi-ton detector investigating double-beta decay in $^{136}$Xe. Efficient extraction and detection of Ba ions, the decay product of Xe, would allow for a background-free measurement of the $^{136}$Xe double-beta decay.

T. Brunner; D. Fudenberg; A. Sabourov; V. L. Varentsov; G. Gratta; D. Sinclair; for the EXO collaboration

2013-02-27T23:59:59.000Z

32

A METHOD FOR DETERMINING THE CURIE LOADING OF Kr$sup 85$ IN NUCLEAR BATTERIES  

SciTech Connect

A calorimeter was developed for determining the amount of Kr/sup 85/ in a nuclear battery. The construction of the calorimeter is described. and a sample measurement is included. (auth)

Thom, A.

1960-01-01T23:59:59.000Z

33

Presentations from Using the Cray XE6 Training at NERSC February 7-8, 2011  

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

Presentations Presentations Presentations Video Compiling Code on the Cray XE6 Using the CrayPat Performance Tool at NERSC Performance Evaluatation Introduction to UPC Running Jobs on Hopper Downloads Gerber-HPC.pdf | Adobe Acrobat PDF file An introduction to HPC Systems. Presented by Richard Gerber, NERSC. ShalfXE6ArchitectureSM.pdf | Adobe Acrobat PDF file A description of the Cray XE6 architecture. Presented by John Shalf, NERSC. Compiling-Cunningham.pdf | Adobe Acrobat PDF file An introduction to compiling in the Cray XE6 environment. Presented by Rob Cunningham, Los Alamos National Laboratory Running-Turner.pdf | Adobe Acrobat PDF file An introduction to running parallel jobs on Hopper. Presented by David Turner, NERSC. UPC-Yelick.pdf | Adobe Acrobat PDF file An introduction to Unified Parallel C (UPC), a Partitioned Global Address

34

Study of gas flow dynamics in porous and granular media with laser-polarized ?Xe NMR  

E-Print Network (OSTI)

This thesis presents Nuclear Magnetic Resonance (NMR) studies of gas flow dynamics in porous and granular media by using laser-polarized ?Xe . Two different physical processes, the gas transport in porous rock cores and ...

Wang, Ruopeng, 1972-

2005-01-01T23:59:59.000Z

35

Web Documents for Using the Cray XE6 Training at NERSC February...  

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

directory: projectprojectstrainingXE6-feb-2011 Files is this directory can be browsed on the web at http:portal.nersc.govprojecttraining Last edited: 2011-04-01 07:36:44...

36

Progress towards an optimized ?Xe / He Zeeman maser and a test of boost symmetry  

E-Print Network (OSTI)

We report on a search for an annual variation of a daily sidereal modulation of the frequency difference between co-located ?Xe and He Zeeman masers that sets a stringent limit on boost-dependent Lorentz and CPT violation ...

Can, Federico

2006-01-01T23:59:59.000Z

37

Measurement of /sup 85/Kr concentrations in air using a cryogenic sampling technique  

Science Conference Proceedings (OSTI)

A new method to detect moderate concentrations (down to approximately 370 Bq/m/sup 3/ under actual field conditions) of /sup 85/Kr in air has been developed. This method employs a cryogenic sampler for collection of the air sample of interest and a Ge(Li) spectroscopy system to determine the concentration of /sup 85/Kr by detection of the 514-keV gamma photon. Data from experiments are presented.

Owens, M.E.; Berven, B.A.; Perdue, P.T.

1981-01-01T23:59:59.000Z

38

Description of Even-Even Xe isotopes in the transitional region of IBM  

E-Print Network (OSTI)

Properties of Xe isotopes isotopes are studied in the U(5)O(6) transitional region of Interacting Boson Model (IBM-1). The energy levels and B(E2)transition rates are calculated via the affine SU(1,1)Lie Algebra. The agreement with the most recent experimental is acceptable. The evaluated Hamiltonian control parameters suggest a spherical to (/gamma)-soft shape transition and propose the Xe(A=130)nucleus as the best candidate for the E(5)symmetry.

M. A. Jafarizadeh; N. Fouladi; H. Sabri

2012-05-01T23:59:59.000Z

39

Calibration of liquid argon and neon detectors with {sup 83}Kr{sup m}  

SciTech Connect

We report results from tests of {sup 83}Kr{sup m} as a calibration source in liquid argon and liquid neon. {sup 83}Kr{sup m} atoms are produced in the decay of {sup 83}Rb, and a clear {sup 83}Kr{sup m} scintillation peak at 41.5 keV appears in both liquids when filling our detector through zeolite coated with {sup 83}Rb. Based on this scintillation peak, we observe 6.0 photoelectrons/keV in liquid argon with a resolution of 8.2% (sigma/E) and 3.0 photoelectrons/keV in liquid neon with a resolution of 19% (sigma/E). The observed peak intensity subsequently decays with the {sup 83}Kr{sup m} half-life after stopping the fill, and we find evidence that the spatial location of {sup 83}Kr{sup m} atoms in the chamber can be resolved. {sup 83}Kr{sup m} will be a useful calibration source for liquid argon, neon dark matter, and solar neutrino detectors.

Lippincott, W. H.; Cahn, S. B.; Kastens, L. W.; McKinsey, D. N.; Nikkel, J. A. [Department of Physics, Yale University, New Haven, Connecticut 06511 (United States); Gastler, D.; Kearns, E. [Department of Physics, Boston University, Boston, Massachusetts 02215 (United States)

2010-04-15T23:59:59.000Z

40

Formation of XeI(B) in low pressure inductive radio frequency electric discharges sustained in mixtures of Xe and I2  

E-Print Network (OSTI)

in mixtures of Xe and I2 Paul N. Barnes Advanced Plasma Research Section (POOC-2), Wright Laboratory, Wright of the authors P.N.B. , and the Advanced Plasma Research Section of Wright- Patterson Air Force Base and NSF ERC

Kushner, Mark

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


41

Xe films on a decagonal Al-Ni-Co quasicrystal surface  

E-Print Network (OSTI)

The grand canonical Monte Carlo method is employed to study the adsorption of Xe on a quasicrystalline Al-Ni-Co surface. The calculation uses a semiempirical gas-surface interaction, based on conventional combining rules and the usual Lennard-Jones Xe-Xe interaction. The resulting adsorption isotherms and calculated structures are consistent with the results of LEED experimental data. In this paper we focus on five features not discussed earlier (Phys. Rev. Lett. 95, 136104 (2005)): the range of the average density of the adsorbate, the order of the transition, the orientational degeneracy of the ground state, the isosteric heat of adsorption of the system, and the effect of the vertical cell dimension.

Wahyu Setyawan; Nicola Ferralis; Renee D. Diehl; Milton W. Cole; Stefano Curtarolo

2006-08-08T23:59:59.000Z

42

Apparatus for improving the working time of the XeBr laser  

DOE Patents (OSTI)

In XeBr lasers which make use of HBr as the source of bromine, it has been found that the working life of the laser is limited because of dissociation of the HBr in the lasing region to form H/sub 2/ and Br/sub 2/. Accordingly, apparatus is disclosed for substantially improving the working time of the XeBr laser wherein means are provided for recombining H/sub 2/ and Br/sub 2/ into HBr and for continuously circulating the gaseous working medium from the lasing region through the recombination region.

Sander, R.K.; Balog, G.; Seegmiller, E.T.

1980-03-04T23:59:59.000Z

43

Apparatus for improving the working time of the XeBr laser  

SciTech Connect

In XeBr lasers which make use of HBr as the source of bromine, it has been found that the working life of the laser is limited because of dissociation of the HBr in the lasing region to form H.sub.2 and Br.sub.2. Accordingly, apparatus is disclosed for substantially improving the working time of the XeBr laser wherein means are provided for recombining H.sub.2 and Br.sub.2 into HBr and for continuously circulating the gaseous working medium from the lasing region through the recombination region. BACKGROUND OF THE INVENTION

Sander, Robert K. (Los Alamos, MN); Balog, George (Los Alamos, MN); Seegmiller, Emma T. (Los Alamos, MN)

1982-01-01T23:59:59.000Z

44

Observation of Two-Neutrino Double-Beta Decay in Xe-136 with EXO-200  

SciTech Connect

We report the observation of two-neutrino double-beta decay in {sup 136}Xe with T{sub 1/2} = 2.11 {+-} 0.04(stat) {+-} 0.21(syst) x 10{sup 21} yr. This second-order process, predicted by the standard model, has been observed for several nuclei but not for {sup 136}Xe. The observed decay rate provides new input to matrix element calculations and to the search for the more interesting neutrinoless double-beta decay, the most sensitive probe for the existence of Majorana particles and the measurement of the neutrino mass scale.

Ackerman, N.; /SLAC; Aharmim, B.; /Laurentian U.; Auger, M.; /Bern U.; Auty, D.J.; /Alabama U.; Barbeau, P.S.; Barry, K.; Bartoszek, L.; /Stanford U., Phys. Dept.; Beauchamp, E.; /Laurentian U.; Belov, V.; /Moscow, ITEP; Benitez-Medina, C.; /Colorado State U.; Breidenbach, M.; /SLAC; Burenkov, A.; /Moscow, ITEP; Cleveland, B.; /Laurentian U.; Conley, R.; Conti, E.; /SLAC; Cook, J.; /Massachusetts U., Amherst; Cook, S.; /Colorado State U.; Coppens, A.; /Carleton U.; Counts, I.; /Stanford U., Phys. Dept.; Craddock, W.; /SLAC; Daniels, T.; /Massachusetts U., Amherst /Moscow, ITEP /Maryland U. /Stanford U., Phys. Dept. /Alabama U. /Maryland U. /Moscow, ITEP /Stanford U., Phys. Dept. /Laurentian U. /Carleton U. /Colorado State U. /Laurentian U. /Munich, Tech. U. /Bern U. /SLAC /Bern U. /Carleton U. /Stanford U., Phys. Dept. /Carleton U. /Maryland U. /Colorado State U. /SLAC /Carleton U. /SLAC /Alabama U. /SLAC /Moscow, ITEP /Indiana U. /Stanford U., Phys. Dept. /Moscow, ITEP /Stanford U., Phys. Dept. /Massachusetts U., Amherst /Seoul U. /Carleton U. /Stanford U., Phys. Dept.; /more authors..

2012-09-14T23:59:59.000Z

45

Simultaneous imaging electron- and ion-feature Thomson scattering measurements of radiatively heated Xe  

Science Conference Proceedings (OSTI)

Uniform density and temperature Xe plasmas have been produced over >4 mm scale-lengths using x-rays generated in a cylindrical Pb cavity. The cavity is 750 {mu}m in depth and diameter, and is heated by a 300 J, 2 ns square, 1054 nm laser pulse focused to a spot size of 200 {mu}m at the cavity entrance. The plasma is characterized by simultaneous imaging Thomson scattering measurements from both the electron and ion scattering features. The electron feature measurement determines the spatial electron density and temperature profile, and using these parameters as constraints in the ion feature analysis allows an accurate determination of the charge state of the Xe ions. The Thomson scattering probe beam is 40 J, 200 ps, and 527 nm, and is focused to a 100 {mu}m spot size at the entrance of the Pb cavity. Each system has a spatial resolution of 25 {mu}m, a temporal resolution of 200 ps (as determined by the probe duration), and a spectral resolution of 2 nm for the electron feature system and 0.025 nm for the ion feature system. The experiment is performed in a Xe filled target chamber at a neutral pressure of 3-10 Torr, and the x-rays produced in the Pb ionize and heat the Xe to a charge state of 20{+-}4 at up to 200 eV electron temperatures.

Pollock, B. B. [Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, California 94550 (United States); University of California, San Diego, 9500 Gilman Dr., La Jolla, California 92093 (United States); Meinecke, J. [Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, California 94550 (United States); University of Oxford, Wellington Square, Oxford, OX1 2JD (United Kingdom); Kuschel, S.; Ross, J. S.; Divol, L.; Glenzer, S. H. [Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, California 94550 (United States); Shaw, J. L. [University of California, Los Angeles, 405 Hilgard Ave., Los Angeles, California 90095 (United States); Stoafer, C. [Columbia University, 116th Street and Broadway, New York, New York 10027 (United States); Tynan, G. R. [University of California, San Diego, 9500 Gilman Dr., La Jolla, California 92093 (United States)

2012-10-15T23:59:59.000Z

46

Q value for the double-{beta} decay of {sup 136}Xe  

Science Conference Proceedings (OSTI)

The high-resolution, deflection-type mass spectrometer, Manitoba II, has been used to determine directly the mass difference {sup 136}Xe-{sup 136}Ba to be 2639.6 (0.6) {mu}u, giving Q{sub {beta}{beta}}=2458.7 (0.6) keV.

McCowan, P. M.; Barber, R. C. [Department of Physics and Astronomy, University of Manitoba, Winnipeg MB R3T 2N2 (Canada)

2010-08-15T23:59:59.000Z

47

Investigating the Impact of the Cielo Cray XE6 Architecture on Scientific Application Codes  

Science Conference Proceedings (OSTI)

Cielo, a Cray XE6, is the Department of Energy NNSA Advanced Simulation and Computing (ASC) campaign's newest capability machine. Rated at 1.37 PFLOPS, it consists of 8,944 dual-socket oct-core AMD Magny-Cours compute nodes, linked using Cray's Gemini ...

Courtenay Vaughan; Mahesh Rajan; Richard Barrett; Doug Doerfler; Kevin Pedretti

2011-05-01T23:59:59.000Z

48

Bloom Energy -(Univ. Arizona), Dr. KR Sridhar ( Bloom Energy CEO) NASA  

E-Print Network (OSTI)

#12;Bloom Energy - (Univ. Arizona), Dr. KR Sridhar ( Bloom Energy CEO) NASA SOFC; Morgan Stanley SOFC Group, KIER #12;100 kW SOFC System 100 kW : 4 x 25 kW - Each module : 25 kW - OneW Module SOFC Group, KIER #12;Bloom Energy SOFC (kW) () (kWh) CO2 (/) Google 400kW, Jul. 2008

Hong, Deog Ki

49

Detection of $^{133}$Xe from the Fukushima nuclear power plant in the upper troposphere above Germany  

E-Print Network (OSTI)

After the accident in the Japanese Fukushima Dai-ichi nuclear power plant in March 2011 large amounts of radioactivity were released and distributed in the atmosphere. Among them were also radioactive noble gas isotopes which can be used as tracers to probe global atmospheric circulation models. This work presents unique measurements of the radionuclide $^{133}$Xe from Fukushima in the upper troposphere above Germany. The measurements involve air sampling in a research jet aircraft followed by chromatographic xenon extraction and ultra-low background gas counting with miniaturized proportional counters. With this technique a detection limit of the order of 100 $^{133}$Xe atoms in liter-scale air samples (corresponding to about 100 mBq/m$^3$) is achievable. Our results proof that the $^{133}$Xe-rich ground level air layer from Fukushima was lifted up to the tropopause and distributed hemispherically. Moreover, comparisons with ground level air measurements indicate that the arrival of the radioactive plume in Germany in high altitude is several days earlier than on ground.

Hardy Simgen; Frank Arnold; Heinfried Aufmhoff; Robert Baumann; Florian Kaether; Sebastian Lindemann; Ludwig Rauch; Hans Schlager; Clemens Schlosser; Ulrich Schumann

2013-09-06T23:59:59.000Z

50

Impact of Xe partial pressure on the production of excimer vacuum ultraviolet emission for plasma display panels  

SciTech Connect

In this work, the effect of the Xe partial pressure on the excimer vacuum ultraviolet (VUV) emission intensity of the plasma display panels is investigated, both by measuring the spectral emission directly and by two-dimensional simulations. Experimentally, we find that at the high Xe partial pressure levels, there is an supra-linear increase of excimer VUV radiation and that determines the strong increase of luminance at the high pressures and high voltage. Due to the increase of the luminance and the almost unchanged discharge current, the luminous efficacy strongly increases with the Xe partial pressure. In addition, we also investigated the dynamics of the VUV generation, by measuring the decay time of the excimer VUV light as a function of the gas pressure. It is found that the decay time decreases with the increase of gas pressure. The spatial characteristics of the excimer VUV emission are also discussed. Different from the Ne and near-infrared emission, the excimer VUV emission is generated near the surface of the electrodes and increases uniformly on both sides of the anode and cathode (i.e., the bulk plasma region). Most importantly, it is found that the VUV production occurs during the afterglow period, while it is almost zero at the moment of the discharge itself. From the simulations, it can be seen that the Xe{sub 2}*({sup 3}{Sigma}{sub u}{sup +}) excimer species, which are generated from Xe*(1s{sub 5}), play a dominant role in the excimer VUV emission output at the high Xe partial pressure. The two-dimensional simulations also show that the strong increase of Xe excimer excitation states in the case of high pressure is mainly the result of the high conversion efficiency of the Xe excimer states, especially in the afterglow period. Due to the high conversion efficiency of Xe excitation species to Xe excimer species by the high collision rate in the case of high pressure, there is a strong increase of excimer VUV production, especially from the cathode.

Zhu Di [Display R and D center, School of Electronic Science and Engineering, Southeast University, Nanjing (China); Graduate School of Advanced Science of Matter, Hiroshima University, Higashi-Hiroshima, Hiroshima (Japan); Zhang Xiong [Display R and D center, School of Electronic Science and Engineering, Southeast University, Nanjing (China); Kajiyama, Hiroshi [Graduate School of Advanced Science of Matter, Hiroshima University, Higashi-Hiroshima, Hiroshima (Japan)

2012-08-01T23:59:59.000Z

51

Weak interaction rates for Kr and Sr waiting-point nuclei under rp-process conditions  

E-Print Network (OSTI)

Weak interaction rates are studied in neutron deficient Kr and Sr waiting-point isotopes in ranges of densities and temperatures relevant for the rp-process. The nuclear structure is described within a microscopic model (deformed QRPA) that reproduces not only the half-lives but also the Gamow-Teller strength distributions recently measured. The various sensitivities of the decay rates to both density and temperature are discussed. Continuum electron capture is shown to contribute significantly to the weak rates at rp-process conditions.

P. Sarriguren

2009-10-06T23:59:59.000Z

52

Photofragment slice imaging studies of pyrrole and the Xe{center_dot}{center_dot}{center_dot}pyrrole cluster  

SciTech Connect

The photolysis of pyrrole has been studied in a molecular beam at wavelengths of 250, 240, and 193.3 nm, using two different carrier gases, He and Xe. A broad bimodal distribution of H-atom fragment velocities has been observed at all wavelengths. Near threshold at both 240 and 250 nm, sharp features have been observed in the fast part of the H-atom distribution. Under appropriate molecular beam conditions, the entire H-atom loss signal from the photolysis of pyrrole at both 240 and 250 nm (including the sharp features) disappear when using Xe as opposed to He as the carrier gas. We attribute this phenomenon to cluster formation between Xe and pyrrole, and this assumption is supported by the observation of resonance enhanced multiphoton ionization spectra for the (Xe{center_dot}{center_dot}{center_dot}pyrrole) cluster followed by photofragmentation of the nascent cation cluster. Ab initio calculations are presented for the ground states of the neutral and cationic (Xe{center_dot}{center_dot}{center_dot}pyrrole) clusters as a means of understanding their structural and energetic properties.

Rubio-Lago, L.; Zaouris, D.; Sakellariou, Y.; Sofikitis, D.; Kitsopoulos, T. N.; Wang, F.; Yang, X.; Cronin, B.; Devine, A. L.; King, G. A.; Nix, M. G. D.; Ashfold, M. N. R.; Xantheas, S. S. [Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, 71110 Heraklion, Crete (Greece); Department of Chemistry, University of Crete, 71110 Heraklion, Crete (Greece); State Key Laboratory for Molecular Reaction Dynamics, Dalian, 116023 Liaoning (China); School of Chemistry, University of Bristol, Bristol BS8 1TS (United Kingdom); Chemical and Materials Sciences Division, Pacific Northwest National Laboratory, 902 Battelle Boulevard, P.O. Box 999, MS K1-83, Richland, Washington 99352 (United States)

2007-08-14T23:59:59.000Z

53

Actinide production in /sup 136/Xe bombardments of /sup 249/Cf  

Science Conference Proceedings (OSTI)

The production cross sections for the actinide products from /sup 136/Xe bombardments of /sup 249/Cf at energies 1.02, 1.09, and 1.16 times the Coulomb barrier were determined. Fractions of the individual actinide elements were chemically separated from recoil catcher foils. The production cross sections of the actinide products were determined by measuring the radiations emitted from the nuclides within the chemical fractions. The chemical separation techniques used in this work are described in detail, and a description of the data analysis procedure is included. The actinide production cross section distributions from these /sup 136/Xe + /sup 249/Cf bombardments are compared with the production cross section distributions from other heavy ion bombardments of actinide targets, with emphasis on the comparison with the /sup 136/Xe + /sup 248/Cm reaction. A technique for modeling the final actinide cross section distributions has been developed and is presented. In this model, the initial (before deexcitation) cross section distribution with respect to the separation energy of a dinuclear complex and with respect to the Z of the target-like fragment is given by an empirical procedure. It is then assumed that the N/Z equilibration in the dinuclear complex occurs by the transfer of neutrons between the two participants in the dinuclear complex. The neutrons and the excitation energy are statistically distributed between the two fragments using a simple Fermi gas level density formalism. The resulting target-like fragment initial cross section distribution with respect to Z, N, and excitation energy is then allowed to deexcite by emission of neutrons in competition with fission. The result is a final cross section distribution with respect to Z and N for the actinide products. 68 refs., 33 figs., 6 tabs.

Gregorich, K.E.

1985-08-01T23:59:59.000Z

54

Model for projectile fragmentation: case study for Ni on Ta, Be and Xe on Al  

E-Print Network (OSTI)

For projectile fragmentation we work out details of a model whose origin can be traced back to the Bevalac era. The model positions itself between the phenomenological EPAX parametrization and microscopic transport models like "Heavy Ion Phase Space Exploration Model" (HIPSE) and antisymmetrised molecular dynamics(AMD). We apply the model to some recent data of projectile fragmentation of Ni on Ta and Be at beam energy 140 MeV/nucleon and some older data of Xe on Al at beam energy 790 MeV/nucleon. Reasonable values of cross-sections for various composites populated in the reactions are obtained.

S. Mallik; G. Chaudhuri; S. Das Gupta

2010-12-30T23:59:59.000Z

55

Electron 83 Rb / 83m Kr Source for the Energy Scale Monitoring in the KATRIN Experiment  

Science Conference Proceedings (OSTI)

The KATRIN (KArlsruhe TRItium Neutrino) experiment investigates the endpoint region of the tritium ??spectrum aiming for the sensitivity on the neutrino mass of 0.2 eV (90% C.L.). A spectrometer of the MAC?E filter (Magnetic Adiabatic Collimation with an Electrostatic filter) type will be used for a total time of at least 5 years. An unrecognized shift of the filtering potential would directly influence the resulting neutrino mass. To continuously monitor the filtering potential the high voltage (HV) will be simultaneously applied to an additional MAC?E filter spectrometer. In this monitor spectrometer suitable electron sources based on atomic/nuclear standards will be utilized. As one of such monitoring tools the solid 83 Rb / 83m Kr source is intended. It provides conversion electrons from 83m Kr (t 1/2 ?=?1.83? h ) which is continuously generated by 83 Rb (t 1/2 ?86? d ). The Calibration and Monitoring task of the KATRIN project demands the long?term energy stability ?E/E of the K?32 conversion electron line (E?=?17.8? keV ???=?2.7? eV ) of 1.6? ppm / month .

Miroslav Zbo?il; The KATRIN collaboration

2011-01-01T23:59:59.000Z

56

KrF laser path to high gain ICF (inertial confinement fusion) laboratory microfusion facility  

SciTech Connect

The krypton-fluoride laser has many desirable features for inertial confinement fusion. Because it is a gas laser capable of operation with high efficiency, it is the only known laser candidate capable of meeting the driver requirements for inertial fusion energy (IFE) production. Los Alamos National Laboratory has defined a program plan to develop KrF lasers for IFE production. This plan develops the KrF laser and demonstrates the target performance in single-pulse facilities. A 100-kJ Laser Target Test Facility (LTTF) is proposed as the next step, to be followed by a 3 to 10-MJ Laboratory Microfusion Facility (LMF). The LTTF will resolve many target physics issues and accurately define the driver energy required for the LMF. It is also proposed that the technology development for IFE, such as the high-efficiency, high-reliability, repetitively pulsed driver, the reactor, mass production of targets, and the mechanism of injecting targets be developed in parallel with the single-pulse facilities. 11 refs., 4 figs.

Harris, D.B.; Sullivan, J.A.; Figueiro, J.F.; Cartwright, D.C.; McDonald, T.E.; Hauer, A.A.; Coggeshall, S.V.; Younger, S.M.

1990-01-01T23:59:59.000Z

57

Probing the Geometry and Interconnectivity of Pores in Organic Aerogels Using Hyperpolarized 129Xe NMR Spectroscopy  

SciTech Connect

Aerogels represent a class of novel open-pore materials with high surface area and nanometer pore sizes. They exhibit extremely low mass densities, low thermal conductivity, good acoustic insulation, and low dielectric constants. These materials have potential applications in catalysis, advanced separation techniques, energy storage, environmental remediation, and as insulating materials. Organic aerogels are stiffer and stronger than silica aerogels and are better insulators with higher thermal resistance. Resorcinol-Formaldehyde (RF) aerogels are typically prepared through the base-catalyzed sol-gel polymerization of resorcinol with formaldehyde in aqueous solution to produce gels, which are then dried in supercritical CO2.1,2 The [resorcinol]/ [catalyst] (R/C) ratio of the starting sol-gel solution has been determined to be the dominant factor that affects the properties of RF aerogels. Since the unique microstructures of aerogels are responsible for their unusual properties, characterizing the detailed porous structures and correlating them with the processing parameters are vital to establish rational design principles for novel organic aerogels with tailored properties. In this communication we report the first use of hyperpolarized (HP) 129Xe NMR to probe the geometry and interconnectivity of pores in RF aerogels and to correlate these with synthetic conditions. Our work demonstrates that HP 129Xe NMR is so far the only method for accurately measuring the free volume-to-surface-area (Vg/S) ratios for soft mesoporous materials without using any geometric models.

Moudrakovski, Igor L.; Wang, Li Q.; Baumann, T.; Satcher, J. H.; Exarhos, Gregory J.; Ratcliffe, C. I.; Ripmeester, J. A.

2004-04-28T23:59:59.000Z

58

Gamma-ray decay schemes for $sup 93$Kr, $sup 93$Rb, and $sup 93$Sr  

SciTech Connect

A study of the gamma-ray de-excitation following the beta decays of $sup 93$Kr, $sup 93$Rb, and $sup 93$Sr using the TRISTAN on-line separator facility is reported. Gamma-ray singles and gamma-gamma coincidence measurements were made using Ge(Li) detectors. Of the 162 gamma rays observed in the decay of $sup 93$Sr, 143, representing more than 99 percent of the total gamma-ray intensity observed, were placed in a level scheme containing 36 levels. For the decay of $sup 93$Rb, 243 gamma rays were observed, of which 231 are placed in a level scheme consisting of 74 levels. This again represents a placement of over 99 percent of the total gamma-ray intensity measured. In the case of the $sup 93$Kr decay approximately 98.5 percent of the observed gamma-ray intensity has been accounted for by the proposed level scheme. This results from the placement of 203 of the 217 gamma rays assigned to this decay in a level scheme comprising 56 levels. Beta-branching for these decays were determined from transition intensity balances. Spin and parity assignments were proposed, whenever possible, on the basis of gamma-ray transition probabilities and deduced log ft values. A comparison is made with the available reaction data for the $sup 93$Y level scheme. In all cases an attempt has been made to explain some of the levels in terms of the nuclear shell model and decay systematics. 18 figures, 20 tables, 68 references. (auth)

Bischof, C.J.

1976-01-01T23:59:59.000Z

59

Lasing on the D lines of sodium pumped by free{yields}free transitions of Na-Xe collision pairs  

SciTech Connect

Lasing on the D{sub 1} and D{sub 2} lines of Na (589.6 and 589.0 nm, respectively) has been generated simultaneously by photoexciting free{yields}free transitions of thermal Na-Xe collision pairs. Pumping the blue satellite of the Na D{sub 2} line in Na/Xe mixtures ({lambda} Almost-Equal-To 560 nm) selectively interacts with Na-Xe pairs having an instantaneous internuclear separation of {approx}5 A and culminates in the population of both Na (3{sup 2}P{sub J}) fine structure levels. The spectral width of the laser excitation spectrum is 1.3 nm (centered at 560.1 nm) and the 3{sup 2}P{sub 3/2}{yields}3{sup 2}S{sub 1/2} (D{sub 2}) laser linewidth was measured to be 9.2 {+-} 0.6 GHz, which is consistent with a coefficient of 18.4 MHz/Torr for broadening of the D{sub 2} 589.0 nm transition by Xe.

Hewitt, J. D.; Eden, J. G. [Laboratory for Optical Physics and Engineering, Department of Electrical and Computer Engineering, University of Illinois, Urbana, Illinois 61801 (United States)

2012-12-10T23:59:59.000Z

60

Observation of Two-Neutrino Double-Beta Decay in [superscript 136]Xe with the EXO-200 Detector  

E-Print Network (OSTI)

We report the observation of two-neutrino double-beta decay in [superscript 136]Xe with T[subscript 1/2]=2.110.04(stat)0.21(syst)10[superscript 21]??yr. This second-order process, predicted by the standard model, has ...

Waldman, Samuel J.

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


61

Generation of strongly coupled Xe cluster nanoplasmas by low intensive soft x-ray laser irradiation  

Science Conference Proceedings (OSTI)

A seeding gas jet including Xe clusters was irradiated with a laser-driven plasma soft x-ray laser pulse ({lambda}=13.9 nm, {approx}7 ps, {<=}5 Multiplication-Sign 10{sup 9} W/cm{sup 2}), where the laser photon energy is high enough to ionize 4d core electrons. In order to clarify how the innershell ionization followed by the Auger electron emission is affected under the intense laser irradiation, the electron energy distribution was measured. Photoelectron spectra showed that the peak position attributed to 4d hole shifted to lower energy and the spectral width was broadened with increasing cluster size. Moreover, the energy distribution exhibited that a strongly coupled cluster nanoplasma with several eV was generated.

Namba, S.; Hasegawa, N.; Kishimoto, M.; Nishikino, M.; Kawachi, T. [Graduate School of Engineering, Hiroshima University,Kagamiyama 1-4-1, Higashi-Hiroshima, Hiroshima, 739-8527 (Japan); Quantum Beam Science Directorate, Japan Atomic Energy Agency, Umemidai 8-1, Kizugawa, Kyoto, 619-0215 (Japan)

2012-07-11T23:59:59.000Z

62

Molecular dynamic studies on anisotropic explosion of laser irradiated Xe cluster  

Science Conference Proceedings (OSTI)

A three dimensional molecular dynamic model is used to investigate the dynamics of Xe clusters of various radii irradiated by laser of moderate intensities ({approx}10{sup 14}-10{sup 16}W/cm{sup 2}). The FWHM pulse duration of the laser is varied from few laser cycles to hundreds of femtosecond. For cluster of radius 50 A irradiated by a laser of 170 fs pulse duration, it is observed that ion yield is more along the direction of laser polarization than perpendicular to it. This trend reverses (more ions are emitted along the direction perpendicular to laser polarization than parallel to it) when laser pulses of few cycles are used. This reversal of anisotropy is explained on the basis of spatial shielding of ions due to the oscillating inner electron cloud along direction of laser electric field. The nature of anisotropy remains same with variations in laser intensity and cluster size.

Mishra, Gaurav; Gupta, N. K. [Theoretical Physics Division, Bhabha Atomic Research Centre, Mumabi-400085 (India)

2012-09-15T23:59:59.000Z

63

Spectroscopy and lifetime measurements of states in {sup 76}Kr populated in {sup 76}Rb decay  

SciTech Connect

The properties of the excited states of {sup 76}Kr, populated in the decay of {sup 76}Rb produced at ISOLDE isotopic separator, have been investigated by using K-conversion electron, {gamma}-ray, and {gamma}-{gamma} coincidence measurements. The lifetimes of several levels have been measured by means of the advanced time-delayed {beta}{gamma}{gamma}(t) method. The identification of 19 new levels and 55 transitions and the information deduced on spin and/or parity of the observed states from K-conversion coefficients, log ft values and decay properties have led to an improved knowledge of the level scheme. In particular, six 1{sup -} states have been definitely identified and J{sup {pi}}=2{sup -} has been assigned to the 2227 keV level, on which a band proposed to have negative-parity and even-spin had been previously observed. The strengths of the E0 and E2 transitions deexciting the 0{sub 2}{sup +} and 0{sub 3}{sup +} states (the latter is here identified with the state at 1598 keV) have been measured. The experimental data concerning the 0{sub 2}{sup +} state have been analyzed in a simple two states mixing model and in the framework of the proton-neutron interacting boson model.

Giannatiempo, A.; Perego, A.; Sona, P.; Nannini, A.; Mach, H.; Fogelberg, B.; Borge, M.J.G.; Tengblad, O.; Fraile, L.M.; Aas, A.J.; Gulda, K. [Dipartimento di Fisica, Universita di Firenze and Istituto Nazionale di Fisica Nucleare, Florence (Italy); Istituto Nazionale di Fisica Nucleare, Florence (Italy); Department of Radiation Sciences, University of Uppsala, S-75121 Uppsala (Sweden); Instituto 'Estructura de la Materia' Consejo Superior de Investigaciones Cientificas, Madrid (Spain); McKinsey and Company, Oslo (Norway); Ministry of Economic Affairs and Labour Department of Innovation, Warsaw (Poland)

2005-10-01T23:59:59.000Z

64

The Nike electron-beam-pumped KrF laser amplifiers  

SciTech Connect

Nike is a recently completed multikilojoule krypton-fluoride (KrF) laser that has been built to study the physics of direct-drive inertial confinement fusion. The two final amplifiers of the Nike laser are both electron-beam-pumped systems. This paper describes these two amplifiers, with an emphasis on the pulsed power. The smaller of the two has a 20 x 20 cm aperture, and produces an output laser beam energy in excess of 100 J. This 20 cm Amplifier uses a single 12 kJ Marx generator to inject two 300 kV, 75 kA, 140 ns flat-top electron beams into opposite sides of the laser cell. The larger amplifier in Nike has a 60 x 60 cm aperture, and amplifies the laser beam up to 5 kJ. This 60 cm amplifier has two independent electron beam systems. Each system has a 170 kJ Marx generator that produces a 670 kV, 540 kA, 240 ns flat-top electron beam. Both amplifiers are complete, fully integrated into the laser, meet the Nike system requirements, and are used routinely for laser-target experiments.

Sethian, J.D.; Pawley, C.J.; Obenschain, S.P. [Naval Research Lab., Washington, DC (United States). Plasma Physics Div.] [and others

1997-04-01T23:59:59.000Z

65

Measurement of the Double-Beta Decay Half-life of {sup 136}Xe in KamLAND-Zen  

Science Conference Proceedings (OSTI)

We present results from the KamLAND-Zen double-beta decay experiment based on an exposure of 77.6 days with 129 kg of {sup 136}Xe. The measured two-neutrino double-beta decay half-life of {sup 136}Xe is T{sup 2{nu}}{sub 1/2} = 2:38 {+-}#6; 0:02(stat)#6;{+-}0.14(syst)#2;x10{sup 21} yr, consistent with a recent measurement by EXO-200. We also obtain a lower limit for the neutrinoless double-beta decay half-life, T{sup 0{nu}}{sub 1/2} > 5.7 x#2; 10{sup 24} yr at 90% C.L.

KamLAND-Zen Collaboration; Gando, A.; Gando, Y.; Hanakago, H.; Ikeda, H.; Inoue, K.; Kato, R.; Koga, M.; Matsuda, S.; Mitsui, T.; Nakada, T.; Nakamura, K.; Obata, A.; Oki, A.; Ono, Y.; Shimizu, I.; Shirai, J.; Suzuki, A.; Takemoto, Y.; Tamae, K.; Ueshima, K.; Watanabe, H.; Xu, B. D.; Yamada, S.; Yoshida, H.; Kozlov, A.; Yoshida, S.; Banks, T. I.; Detwiler, J. A.; Freedman, S. J.; Fujikawa, B. K.; Han, K.; O'Donnell, T.; Berger, B. E.; Efremenko, Y.; Karwowski, H. J.; Markoff, D. M.; Tornow, W.; Enomoto, S.; Decowski, M. P.

2012-01-23T23:59:59.000Z

66

Development of laser-based resonance ionization techniques for 81-Kr and 85-Kr measurements in the geosciences, II. December 1, 1994 through December 31, 2000 reporting period. Final technical report for Grant No. DE-FG05-95ER14497  

Science Conference Proceedings (OSTI)

A facility for measurement of rare Kr-81 and Kr-85 isotope concentration in hydrogeologic samples, and isotopic composition of minute quantities of krypton and xenon from extraterrestrial samples, was established, requiring refinement of an emerging mass spectrometric-based analytical technique and securing of laboratory space and equipment. The analytical process consists of (1) collecting a groundwater sample, (2) degassing the water, (3) separating Kr from the recovered gases, (4&5) two isotopic enrichments to reduce interfering isotopes by E9, and (6) detecting the rare krypton isotope in a unique time-of-flight mass spectrometer detecting as few as 100 Kr atoms. All equipment is installed and operating, with only some additional adjustment and testing of the last step (6, above) remaining to be completed. Collaborations have been established with a number of researchers and organizations world wide, and both groundwater and extraterrestrial samples have been collected. Completion of analyses awaits full operation of step 6.

Thonnard, Norbert; McKay, Larry D.; Labotka, Theodore C.

2001-02-05T23:59:59.000Z

67

Control of the UV flux of a XeCl dielectric barrier discharge excilamp through its current variation  

Science Conference Proceedings (OSTI)

The efficiency of the electrical power transfer to the gas mixture of a XeCl dielectric barrier discharge (DBD) exciplex lamp is analysed. An equivalent circuit model of the DBD is considered. It is shown that the excilamp power can be controlled by applying current to the lamp. This highly desired property is ensured by means of a specific power supply topology, whose concepts and design are discussed. The experimental prototype of a current-mode converter operating in the pulsed regime at pulse repetition rate of 50 kHz is presented and its capability to control the amount of energy transferred during each current pulse is demonstrated. The capability of this power supply to maintain specific operating conditions for the DBD lamp, with a very stable behaviour (even at a very low current, in the regime of a single discharge channel), is illustrated. The experimental results of a combined use of this converter and a XeCl excilamp are presented. The influence of the supply parameters on the 308-nm XeCl excilamp is analysed. The shape of the UV pulse of the lamp is experimentally shown to be similar to that of the current, which actually flows into the gas mixture. The UV radiation power is demonstrated to be tightly correlated to the current injected into the gas and controlled by the available degrees of freedom offered by the power supply. The measured UV output characteristics and performance of the system are discussed. Time resolved UV imaging of a XeCl DBD excilamp is used to analyse the mechanisms involved in the production of exciplexes at various power supply regimes. It is shown that a pulsed voltage source leads to formation of short high intensity UV peaks, while current pulses lead to formation of sustained discharge filaments. Based on the results of modelling of the above-mentioned operation conditions, the two power supply regimes are compared and analysed from the point of view of the UV power and radiative control.

Piquet, H; Bhosle, S; Diez, R; Cousineau, M; Djibrillah, M; Le Thanh, D; Dagang, A N; Zissis, G

2012-02-28T23:59:59.000Z

68

Distribution of the 83Rb/83mKr activity on vacuum evaporated samples examined with the Timepix position sensitive detector  

E-Print Network (OSTI)

Properties of vacuum evaporated 83Rb/83mKr sources of low-energy conversion electrons, which are under development for monitoring the energy scale stability of the Karlsruhe Tritium Neutrino experiment KATRIN, were examined by the Timepix pixel detector exhibiting the position resolution of at least 55 microm. No distinct local inhomogeneities in the surface distribution of 83Rb/83mKr were observed. The source diameter derived from the recorded image agrees within 5 % with that expected from evaporation geometry. More precise determination of the actual source diameter is complicated by Compton scattered electrons caused by 83Rb gamma-rays.

D. Venos; J. Jakubek; O. Dragoun; S. Pospisil

2007-12-22T23:59:59.000Z

69

Comparing the Performance of Blue Gene/Q with Leading Cray XE6 and InfiniBand Systems  

Science Conference Proceedings (OSTI)

AbstractThree types of systems dominate the current High Performance Computing landscape: the Cray XE6, the IBM Blue Gene, and commodity clusters using InfiniBand. These systems have quite different characteristics making the choice for a particular deployment difficult. The XE6 uses Crays proprietary Gemini 3-D torus interconnect with two nodes at each network endpoint. The latest IBM Blue Gene/Q uses a single socket integrating processor and communication in a 5-D torus network. InfiniBand provides the flexibility of using nodes from many vendors connected in many possible topologies. The performance characteristics of each vary vastly along with their utilization model. In this work we compare the performance of these three systems using a combination of micro-benchmarks and a set of production applications. In particular we discuss the causes of variability in performance across the systems and also quantify where performance is lost using a combination of measurements and models. Our results show that significant performance can be lost in normal production operation of the Cray XT6 and InfiniBand Clusters in comparison to Blue Gene/Q.

Kerbyson, Darren J.; Barker, Kevin J.; Vishnu, Abhinav; Hoisie, Adolfy

2013-01-21T23:59:59.000Z

70

Development of electron beam pumped KrF Lasers for fusion energy J. D. Sethian, M. Friedman, J. Giuliani, R.H. Lehmberg, M. Myers, S.P. Obenschain,  

E-Print Network (OSTI)

Plant study showed a KrF based system could lead to an economically attractive power plant [3]. In view drive targets; their short wavelength (248 nm), which mitigates the growth of plasma instabilities and transport; KrF kinetics and laser propagation; and pulsed power. The work will be cast in context of the two

71

Annual Summary Report Calendar Year 2000 for the 100-HR-3, 100-KR-4, and 100-NR-2 Operable Units and Pump-and-Treat Operations  

Science Conference Proceedings (OSTI)

This annual progress and performance evaluation report discusses the groundwater remedial actions in the 100 Area, including the interim actions at the 100-HR-3 and 100-KR-4 Operable Units, and also discusses the expedited response action in the 100-NR-2 operable unit.

G. B. Mitchem

2001-08-22T23:59:59.000Z

72

Absolutely Calibrated Vacuum Ultraviolet Spectra in the 150 nm to 250 nm Range from Plasmas Generated by the NIKE KrF Laser  

E-Print Network (OSTI)

Generated by the NIKE KrF Laser J. F. Seely Space Science Division, Naval Research Laboratory, Washington DC. Lehmberg Plasma Physics Division, Naval Research Laboratory, Washington DC 20375 Benjawan were recorded with a protective window between the target and the spectrometer slit

73

Mass transfer during the prefission step in the 17.0-MeV/u {sup 132}Xe+ {sup 238}U interaction  

SciTech Connect

The process of mass transfer is investigated occurring during the first of two steps of the 17.0-MeV/u {sup 132}Xe + {sup 238}U heavy-ion reaction. Mass of the projectile-like nucleus after the first reaction step has been determined by the Fokker-Planck equation. Results have been compared with previously reported measurements.

Savovic, S., E-mail: savovic@kg.ac.rs [Faculty of Science (Serbia); Djordjevich, A. [City University of Hong Kong (Hong Kong); Jokic, S. [Institute of Nuclear Science 'Vinca' (Serbia); Khan, E. U. [CIIT, Department of Physics (Pakistan)

2011-05-15T23:59:59.000Z

74

Report for Batch Leach Analyses on Sediments at 100-KR-4 Operable Unit, Boreholes C7684, C7688, and C7695  

Science Conference Proceedings (OSTI)

This is a data report for sediment samples received by CHPRC from the 100-KR-4 OU. Between December 17, 2010 and February 17, 2011 sediment samples were received from 100-KR-4 Operable Unit for geochemical studies. The analyses for this project were performed at the 331 building located in the 300 Area of the Hanford Site. The analyses were performed according to Pacific Northwest National Laboratory (PNNL) approved procedures and/or nationally recognized test procedures. The data sets include the sample identification numbers, analytical results, estimated quantification limits (EQL), and quality control data. The preparatory and analytical quality control requirements, calibration requirements, acceptance criteria, and failure actions are defined in the on-line QA plan 'Conducting Analytical Work in Support of Regulatory Programs' (CAW). This QA plan implements the Hanford Analytical Services Quality Assurance Requirements Documents (HASQARD) for PNNL.

Lindberg, Michael J.

2011-03-01T23:59:59.000Z

75

Preliminary results from E665 on cross-section ratios at low x sub bj using H sub 2 , D sub 2 and Xe targets  

DOE Green Energy (OSTI)

Fermilab experiment 665 has taken deep-inelastic muon scattering data at a beam energy of 490 GeV/c, on H{sub 2}, D{sub 2} and Xe targets. Two triggers have been used: a large scattering-angle trigger (LAT), sensitive to a minimum scattering angle of 3 mrad, and a small scattering-angle trigger which can accept a scattering angle down to 0.5 mrad. The neutron to proton ratio is reported for x{sub bj} above 0.002, and it shows consistency with 1 as x{sub bj} goes to 0. The Xe to D{sub 3} cross-section ratio is reported for x{sub bj} above 0.001 and it shows evidence of shadowing. 5 refs., 5 figs.

Aied, S. (Maryland Univ., College Park, MD (USA))

1990-06-01T23:59:59.000Z

76

Kinetics of the processes, plasma parameters, and output characteristics of a UV emitter operating on XeI molecules and iodine molecules and atoms  

SciTech Connect

A kinetic model of the processes occurring in the plasma of a high-power low-pressure gas-discharge lamp is presented, and the output characteristics of the lamp are described. The lamp is excited by a longitudinal glow discharge and emits the I{sub 2}(D Prime -A Prime ) 342-nm and XeI(B-X) 253-nm bands and the 206.2-nm spectral line of atomic iodine. When the emitter operates in a sealed-off mode on the p(He): p(Xe): p(I{sub 2}) = 400: 120: (100-200) Pa mixture, the fractions of the UV radiation power of iodine atoms, exciplex molecules of xenon iodide, and iodine molecules comprise 55, 10, and 35%, respectively. At the optimal partial pressure, the maximum total radiation power of the lamp reaches 37 W, the energy efficiency being about 15%.

Shuaibov, A. K.; Grabovaya, I. A.; Minya, A. I.; Homoki, Z. T. [Uzhgorod National University (Ukraine); Kalyuzhnaya, A. G.; Shchedrin, A. I. [National Academy of Sciences of Ukraine, Institute of Physics (Ukraine)

2011-03-15T23:59:59.000Z

77

Electric dipole moments of Hg, Xe, Rn, Ra, Pu, and TlF induced by the nuclear Schiff moment and limits on time-reversal violating interactions  

E-Print Network (OSTI)

We have calculated the atomic electric dipole moments (EDMs) induced in ^{199}Hg, ^{129}Xe, ^{223}Rn, ^{225}Ra, and ^{239}Pu by their respective nuclear Schiff moments S. The results are (in units 10^{-17}S(e {fm}^{3})^{-1}e cm): d(^{199}Hg)=-2.8, d(^{129}Xe)=0.38, d(^{223}Rn)=3.3, d(^{225}Ra)=-8.5, d(^{239}Pu)=-11. We have also calculated corrections to the parity- and time-invariance-violating (P,T-odd) spin-axis interaction constant in TlF. These results are important for the interpretation of atomic and molecular experiments on EDMs in terms of fundamental P,T-odd parameters.

V. A. Dzuba; V. V. Flambaum; J. S. M. Ginges; M. G. Kozlov

2002-03-21T23:59:59.000Z

78

Production of medium-mass neutron-rich nuclei in reactions induced by {sup 136}Xe projectiles at 1 A GeV on a beryllium target  

Science Conference Proceedings (OSTI)

Production cross sections of medium-mass neutron-rich nuclei obtained in the fragmentation of {sup 136}Xe projectiles at 1 A GeV have been measured with the FRagment Separator (FRS) at GSI. The measured cross sections are compared to {sup 238}U fission yields and model calculations to determine the optimum reaction mechanism to extend the limits of the chart of the nuclides around the r-process waiting point at N=82.

Benlliure, J.; Fernandez-Ordonez, M.; Casarejos, E.; Pereira, J. [Universidade de Santiago de Compostela, E-15782 Santiago de Compostela (Spain); Audouin, L.; Rejmund, F.; Stephan, C.; Tassan-Got, L. [IPN Orsay, Universite Paris-Sud 11, CNRS/IN2P3, F-91406 Orsay cedex (France); Boudard, A.; Ducret, J. E.; Leray, S.; Volant, C.; Villagrasa, C. [DAPNIA/SPhN, DSM-CEA, F-91191 Gif-sur-Yvette cedex (France); Enqvist, T.; Heinz, A.; Henzlova, D.; Henzl, V.; Kelic, A.; Ricciardi, M. V.; Schmidt, K.-H. [GSI, Planckstrasse 1, D-64291 Darmstadt (Germany)] (and others)

2008-11-15T23:59:59.000Z

79

Blue-green laser output from N(+2) and XeF. Final technical report, 1 Jan 77-31 Oct 81  

Science Conference Proceedings (OSTI)

The objective of this work was to determine the feasibility of developing, first the helium nitrogen charge transfer laser, and later the XeF laser into efficient scalable devices excited by preionized discharges for the production of blue-green outputs. The performance and scalability of the N2(+) laser pumped by charge transfer from He2(+) was determined in such a discharge environment. The gain and saturation parameters were measured and a regenerative amplifier capable of operation at 470.9 nm was constructed. A traveling wave device was built which at 427 nm produced peak powers of 5 MW in the forward direction and which had a front-to-back ratio of 10,000 to 1 for the pulse energies. Efforts were made to apply that technology to the problem of switching the output from a XeF laser into the C yields A transition at 480 nm. Gain and saturation parameters were examined and it was found that the relative gains between the stronger UV transition and the blue-green transition were greater than 30 to 1. These results implied that the blue-green transition of XeF was too weak to support the development of any practical device pumped by a preionized discharge.

Collins, C.B.

1981-12-30T23:59:59.000Z

80

Adsorption and desorption of noble gases on activated charcoal: I. sup 133 Xe studies in a monolayer and packed bed  

SciTech Connect

Detailed desorption studies using petroleum-based activated charcoals were conducted in monolayers and packed beds. Less extensive studies were conducted on several other types of charcoal. Kinetic studies, using {sup 133}Xe, demonstrated the existence of a micropore volume with entrance capillaries that together determined the response characteristics of charcoal to external concentration gradients of tracer gases. This new two-phase model, composed of micropores and entrance capillaries, describes the desorption dynamics of an adsorbed gas in the presence of water vapor. Condensed water vapor in the entrance capillaries of the charcoal reduced the effective pore radius and increased the diffusion half-time. Water could also adversely affect the integrating capability of the charcoal dramatically if the adsorbed water completely blocked the entrance capillaries. The amount of adsorbed water required to block the capillaries varied with the charcoal type and was termed here as the break-point. The desorption parameters measured in this work can be used to design an improved passive Rn monitor to effectively integrate during a 3-7 d exposure period by eliminating the adverse effects of water vapor. The improved canister design would provide more accurate and reproducible measurements of indoor Rn concentrations than are currently available.

Scarpitta, S.C.; Harley, N.H. (Department of Energy, New York, NY (USA))

1990-10-01T23:59:59.000Z

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


81

Fuel Modeling I  

Science Conference Proceedings (OSTI)

Mar 4, 2013 ... Integrated Computational Modeling of Materials for Nuclear Energy: Fuel ... in the incorporation of rare gas fission products such as Kr and Xe.

82

Atomistic Study of Interstitial Migration in the Proximity of a Helium ...  

Science Conference Proceedings (OSTI)

Coated bubbles, either depleted or enriched in solute, are also of interest and are ... and Incorporation Energies of Fission Gases He, Xe, and Kr in bcc Uranium.

83

A Novel Optical Technique for Rapid Detection of Neutrons  

Science Conference Proceedings (OSTI)

... The efficiency of the Xe, Kr, and Ar mixtures with 3 He was high: the nuclear reaction energy is converted to far-ultraviolet radiation with efficiencies ...

2012-06-27T23:59:59.000Z

84

Kinetic Lattice Monte Carlo Simulations of Radiation Induced ...  

Science Conference Proceedings (OSTI)

The simulations confirm that the enrichment or depletion of Cr at grain ... Formation and Incorporation Energies of Fission Gases He, Xe, and Kr in bcc Uranium.

85

Capture and Immobilization of Radionuclides  

Science Conference Proceedings (OSTI)

Oct 9, 2012 ... The conventional method to separate these two gases is cryogenic distillation which is an energy-intensive process. Separation of Xe and Kr by...

86

Compatibility of technologies with regulations in the waste management of H-3, I-129, C-14, and Kr-85. Part I. Initial information base  

SciTech Connect

This report summarizes the information base that was collected and reviewed in preparation for carrying out an analysis of the compatibility with regulations of waste management technologies for disposal of H-3, I-129, C-14, and Kr-85. Based on the review of this literature, summaries are presented here of waste-form characteristics, packaging, transportation, and disposal methods. Also discussed are regulations that might apply to all operations involved in disposal of the four nuclides, including the processing of irradiated fuel in a fuel reprocessing plant, packaging, storage, transport, and final disposal. The compliance assessment derived from this information is reported in a separate document. 309 references.

Trevorrow, L.E.; Vandegrift, G.F.; Kolba, V.M.; Steindler, M.J.

1983-08-01T23:59:59.000Z

87

Production of medium-mass neutron-rich nuclei in reactions induced by 136Xe projectiles at 1 A GeV on a beryllium target  

E-Print Network (OSTI)

Production cross sections of medium-mass neutron-rich nuclei obtained in the fragmentation of 136Xe projectiles at 1 A GeV have been measured with the FRagment Separator (FRS) at GSI. 125Pd was identified for the first time. The measured cross sections are compared to 238U fission yields and model calculations in order to determine the optimum reaction mechanism to extend the limits of the chart of the nuclides around the r-process waiting point at N=82.

Benlliure, J; Audouin, L; Boudard, A; Casarejos, E; Ducret, J E; Enqvist, T; Heinz, A; Henzlova, D; Henzl, V; Kelic, A; Leray, S; Napolitani, P; Pereira, J; Rejmund, F; Ricciardi, M V; Schmidt, K -H; Schmitt, C; Stphan, C; Tassan-Got, L; Volant, C; Villagrasa, C; Yordanov, O

2008-01-01T23:59:59.000Z

88

Ultra-stable implanted 83Rb/83mKr electron sources for the energy scale monitoring in the KATRIN experiment  

E-Print Network (OSTI)

The KATRIN experiment aims at the direct model-independent determination of the average electron neutrino mass via the measurement of the endpoint region of the tritium beta decay spectrum. The electron spectrometer of the MAC-E filter type is used, requiring very high stability of the electric filtering potential. This work proves the feasibility of implanted 83Rb/83mKr calibration electron sources which will be utilised in the additional monitor spectrometer sharing the high voltage with the main spectrometer of KATRIN. The source employs conversion electrons of 83mKr which is continuously generated by 83Rb. The K-32 conversion line (kinetic energy of 17.8 keV, natural line width of 2.7 eV) is shown to fulfill the KATRIN requirement of the relative energy stability of +/-1.6 ppm/month. The sources will serve as a standard tool for continuous monitoring of KATRIN's energy scale stability with sub-ppm precision. They may also be used in other applications where the precise conversion lines can be separated from the low energy spectrum caused by the electron inelastic scattering in the substrate.

M. Zbo?il; S. Bauer; M. Beck; J. Bonn; O. Dragoun; J. Jak\\rubek; K. Johnston; A. Kovalk; E. W. Otten; K. Schlsser; M. Slezk; A. palek; T. Thmmler; D. Vnos; J. emli?ka; C. Weinheimer

2012-12-20T23:59:59.000Z

89

Intel Inspector XE  

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

Recompile with Intel Compiler Use any build, any compiler Lower overhead Higher overhead Only finds pointer errors Finds multiple error types One error at a time GUI...

90

The Periodic Table of Elements C  

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

Atomic Number Chemical Symbol Atomic Weight Chemical Name = Solid at room temperature = Liquid at room temperature = Gas at room temperature = Radioactive = Artificially Made KEY METALS NON-METALS 12.011 http://education.jlab.org/ Last revised on April 3, 2013 [294] H Li Na K Be Mg Ca Sc Ti Rb Cs Fr Sr Y Ba Ra Zr Hf Rf V Nb Ta Db Cr Mo W Sg Mn Tc Re Bh Fe Ru Os Hs Co Rh Ir Mt Ni Pd Pt Ds Cu Ag Au Rg Zn Cd Hg Cn Ga In Tl Uut Ge Sn Pb Fl As Sb Bi Uup Se Te Po Lv Br I At Uus Kr Xe Rn Uuo La Ac Ce Th Pr Pa Nd U Pm Np Sm Pu Eu Am Gd Cm Tb Bk Dy Cf Ho Es Er Fm Tm Md Yb Yb No Lu Lr B Al C Si N P O S F Cl Ne He Ar HYDROGEN LITHIUM SODIUM POTASSIUM BERYLLIUM MAGNESIUM CALCIUM SCANDIUM TITANIUM RUBIDIUM CESIUM FRANCIUM STRONTIUM YTTRIUM BARIUM RADIUM ZIRCONIUM HAFNIUM RUTHERFORDIUM VANADIUM NIOBIUM TANTALUM DUBNIUM CHROMIUM MOLYBDENUM TUNGSTEN SEABORGIUM MANGANESE TECHNETIUM RHENIUM BOHRIUM IRON RUTHENIUM OSMIUM HASSIUM

91

The Periodic Table of Elements C  

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

.011 .011 Atomic Number Chemical Symbol Atomic Weight Chemical Name = Solid at room temperature = Liquid at room temperature = Gas at room temperature = Radioactive = Artificially Made KEY METALS NON-METALS http://education.jlab.org/ Last revised on April 3, 2013 [294] H Li Na K Be Mg Ca Sc Ti Rb Cs Fr Sr Y Ba Ra Zr Hf Rf V Nb Ta Db Cr Mo W Sg Mn Tc Re Bh Fe Ru Os Hs Co Rh Ir Mt Ni Pd Pt Ds Cu Ag Au Rg Zn Cd Hg Cn Ga In Tl Uut Ge Sn Pb Fl As Sb Bi Uup Se Te Po Lv Br I At Uus Kr Xe Rn Uuo La Ac Ce Th Pr Pa Nd U Pm Np Sm Pu Eu Am Gd Cm Tb Bk Dy Cf Ho Es Er Fm Tm Md Yb Yb No Lu Lr B Al C Si N P O S F Cl Ne He Ar HYDROGEN LITHIUM SODIUM POTASSIUM BERYLLIUM MAGNESIUM CALCIUM SCANDIUM TITANIUM RUBIDIUM CESIUM FRANCIUM STRONTIUM YTTRIUM BARIUM RADIUM ZIRCONIUM HAFNIUM RUTHERFORDIUM VANADIUM NIOBIUM TANTALUM DUBNIUM CHROMIUM MOLYBDENUM TUNGSTEN SEABORGIUM MANGANESE TECHNETIUM RHENIUM BOHRIUM IRON RUTHENIUM OSMIUM HASSIUM COBALT

92

Decay of excited nuclei produced in $^{78,82}$Kr + $^{40}$Ca reactions at 5.5 MeV/nucleon  

E-Print Network (OSTI)

Decay modes of excited nuclei are investigated in $^{78,82}$Kr + $^{40}$Ca reactions at 5.5 MeV/nucleon. Charged products were measured by means of the $4\\pi$ INDRA array. Kinetic-energy spectra and angular distributions of fragments with atomic number 3 $\\le Z \\le$ 28 indicate a high degree of relaxation and are compatible with a fission-like phenomenon. Persistence of structure effects is evidenced from elemental cross-sections ($\\sigma_{Z}$) as well as a strong odd-even-staggering (o-e-s) of the light-fragment yields. The magnitude of the staggering does not significantly depend on the neutron content of the emitting system. Fragment-particle coincidences suggest that the light partners in very asymmetric fission are emitted either cold or at excitation energies below the particle emission thresholds. The evaporation residue cross-section of the $^{78}$Kr + $^{40}$Ca reaction is slightly higher than the one measured in $^{82}$Kr + $^{40}$Ca reaction. The fission-like component is larger by $\\sim$ 25% for the reaction having the lowest neutron-to-proton ratio. These experimental features are confronted to the predictions of theoretical models. The Hauser-Feshbach approach including the emission of fragments up to $Z$ = 14 in their ground states as well as excited states does not account for the main features of $\\sigma_{Z}$. For both reactions, the transition-state formalism reasonably reproduces the $Z$-distribution of the fragments with charge 12 $\\le Z \\le$ 28. However, this model strongly overestimates the light-fragment cross-sections and does not explain the o-e-s of the yields for 6 $\\le Z \\le$ 10. The shape of the whole $Z$-distribution and the o-e-s of the light-fragment yields are satisfactorily reproduced within the dinuclear system framework which treats the competition between evaporation, fusion-fission and quasifission processes. The model suggests that heavy fragments come mainly from quasifission while light fragments are predominantly populated by fusion. An underestimation of the cross sections for 16 $\\le Z \\le$ 22 could signal a mechanism in addition to the capture process.

G. Ademard; J. P. Wieleczko; J. Gomez Del Campo; M. La Commara; E. Bonnet; M. Vigilante; A. Chbihi; J. D. Frankland; E. Rosato; G. Spadaccini; Sh. A. Kalandarov; C. Beck; S. Barlini; B. Borderie; R. Bougault; R. Dayras; G. De Angelis; J. De Sanctis; V. L. Kravchuk; P. Lautesse; N. Le Neindre; J. Moisan; A. D'onofrio; M. Parlog; D. Pierroutsakou; M. F. Rivet; M. Romoli; R. Roy; G. G. Adamian; N. V. Antonenko

2011-04-20T23:59:59.000Z

93

RtS>-l-2437 Utilization of the Isotoplc Composition of  

E-Print Network (OSTI)

RtS«>-l»-2437 3*- if, -. Utilization of the Isotoplc Composition of Xe and Kr in Fission Gas 4* #12;RIS?-M-2437 UTILIZATION OF THE ISOTOPIC COMPOSITION OF Xe AND Kr IN FISSION GAS RELEASE Computerized Man- Machine Communication, Hotel Alexandra, Loen, May 23rd-28th, 1983 ISBN 87-550-1018-0 ISSN

94

Study of a plate-electrode XeCl laser with a pulse repetition rate up to 5 kHz  

SciTech Connect

The results of the study of a repetitively pulsed XeCl laser with a high rate of pulse repetition and the electrode assembly based on a multi-section discharge gap with inductance-capacitance stabilisation of the discharge are presented. The multi-section discharge gap is formed by 25 pairs of anode - cathode plates. The discharge formed in the interelectrode gap had the dimensions 250 Multiplication-Sign 12 Multiplication-Sign 2 mm. The studies were performed using the HCl - Xe - Ne laser mixture at the total pressure up to 3.5 atm. The limit value of the radiation pulse repetition rate was equal to 5 kHz. The meansquare deviation of the pulse energy increased from 0.8 % to 1.6 % in the range of repetition rates from 1 to 4.5 kHz and did not exceed 2.4 % at the frequency 5 kHz. The maximal energy of the laser pulse and the efficiency coefficient were equal to 7.9 mJ and 1.6 %, respectively. The maximal power of laser radiation (31 W) was obtained at the repetition rate 5 kHz. A new technique of measuring the gas flow velocity in the interelectrode gap is proposed. The velocity of gas circulation at the maximal pressure of the mixture did not exceed 18 m s{sup -1}. Optical inhomogeneities were observed, caused by a high concentration of electrons in the discharge plasma, by the acoustic wave, arising in the discharge gap, and by the heating of the gas in the discharge. (lasers)

Voevodin, Denis D; Vysotskii, Andrei V; Lazhintsev, Boris V; Pisetskaya, Anastasiya V [Russian Federal Nuclear Center 'All-Russian Research Institute of Experimental Physics', Sarov, Nizhnii Novgorod region (Russian Federation)

2012-11-30T23:59:59.000Z

95

Large-Scale Calculations of the Double-Beta Decay of 76Ge, 130Te, 136Xe, and 150Nd in the Deformed Self-Consistent Skyrme Quasiparticle Random-Phase Approximation  

E-Print Network (OSTI)

We use the axially-deformed Skyrme Quasiparticle Random-Phase Approximation (QRPA) together with the SkM* energy-density functional, both as originally presented and with the time-odd part adjusted to reproduce the Gamow-Teller resonance energy in 208Pb, to calculate the matrix elements governing the neutrinoless double-beta decay of 76Ge, 130Te, 136Xe, and 150Nd. Our matrix elements in 130Te and 136Xe are significantly smaller than those of previous QRPA calculations, primarily because of the difference in pairing or deformation between the initial and final nuclei. In 76Ge and 150Nd our results are similar to those of less computationally intensive QRPA calculations. We suspect the 76Ge result, however, because we are forced to use a spherical ground-state, even though the HFB indicates a deformed minimum.

M. T. Mustonen; J. Engel

2013-01-29T23:59:59.000Z

96

Mechanism and computational model for Lyman-{alpha}-radiation generation by high-intensity-laser four-wave mixing in Kr-Ar gas  

SciTech Connect

We present a theoretical model combined with a computational study of a laser four-wave mixing process under optical discharge in which the non-steady-state four-wave amplitude equations are integrated with the kinetic equations of initial optical discharge and electron avalanche ionization in Kr-Ar gas. The model is validated by earlier experimental data showing strong inhibition of the generation of pulsed, tunable Lyman-{alpha} (Ly-{alpha}) radiation when using sum-difference frequency mixing of 212.6 nm and tunable infrared radiation (820-850 nm). The rigorous computational approach to the problem reveals the possibility and mechanism of strong auto-oscillations in sum-difference resonant Ly-{alpha} generation due to the combined effect of (i) 212.6-nm (2+1)-photon ionization producing initial electrons, followed by (ii) the electron avalanche dominated by 843-nm radiation, and (iii) the final breakdown of the phase matching condition. The model shows that the final efficiency of Ly-{alpha} radiation generation can achieve a value of {approx}5x10{sup -4} which is restricted by the total combined absorption of the fundamental and generated radiation.

Louchev, Oleg A.; Saito, Norihito; Wada, Satoshi [Advanced Science Institute, RIKEN, 2-1 Hirosawa, Wako, Saitama, 351-0198 (Japan); Bakule, Pavel [STFC, ISIS Facility, Rutherford Appleton Laboratory, Chilton, Oxfordshire OX11 0QX (United Kingdom); Yokoyama, Koji [Advanced Science Institute, RIKEN, 2-1 Hirosawa, Wako, Saitama, 351-0198 (Japan); Advanced Meson Science Laboratory, RIKEN Nishina Center, RIKEN, Wako, Saitama 351-0198 (Japan); Ishida, Katsuhiko; Iwasaki, Masahiko [Advanced Meson Science Laboratory, RIKEN Nishina Center, RIKEN, Wako, Saitama 351-0198 (Japan)

2011-09-15T23:59:59.000Z

97

Charge correlations and isotopic distributions of projectile fragmentation events in {sup 124}Xe+{sup 112}Sn at E/A=50 MeV  

Science Conference Proceedings (OSTI)

Ternary breakup of an excited projectile-like fragment produced in mid-peripheral collisions of {sup 124}Xe projectiles with {sup 112}Sn nuclei at E/A=50 MeV is examined. Charge correlations reveal that symmetric breakups occur with significant probability. By selecting on the parallel velocity of the heaviest fragment we minimize the entrance channel dynamics. Calculations with the statistical decay code GEMINI failed to reproduce the experimental charge correlations for any suitable combination of excitation energy and spin considered. A statistical multifragmentation model (SMM) in which breakup of low-density nuclear matter is assumed was able to reproduce the observed charge correlations. The /Z and isotope distributions of fragments were compared to the results of the SMM calculations. Describing the /Z of heavy fragments (Z>6) within SMM suggests that a reduction of the symmetry energy parameter from {gamma}=25 to 14 MeV is necessary. We observe that the yield of neutron-rich isotopes of heavy fragments is particularly sensitive to the symmetry energy.

Hudan, S.; McIntosh, A. B.; Black, J.; Mercier, D.; Metelko, C. J.; Yanez, R.; Souza, R. T. de; Chbihi, A.; Famiano, M.; Fregeau, M. O.; Gauthier, J.; Moisan, J.; Roy, R.; Bianchin, S.; Schwarz, C.; Trautmann, W.; Botvina, A. S. [Department of Chemistry and Indiana University Cyclotron Facility, 2401 Milo B. Sampson Lane, Bloomington, Indiana 47405 (United States); GANIL, Caen (France); Western Michigan University, Kalamazoo, Michigan (United States); Universite Laval, Quebec (Canada); GSI Helmholtzzentrum GmbH, Planckstrasse 1, D-64291 Darmstadt (Germany); Institute for Nuclear Research, Russian Academy of Sciences, RU-117312 Moscow (Russian Federation)

2009-12-15T23:59:59.000Z

98

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

SciTech Connect

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

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

2012-04-01T23:59:59.000Z

99

EBIT EUV MEASUREMENTS OF KR XXI KR XXXV AND ...  

Science Conference Proceedings (OSTI)

... Krypton is one of the elements proposed for use with the ITER tokamak, the fusion reactor under construction in Cadarache, France. ...

100

Why the xE distribution triggered by a leading particle does not measure the fragmentation function but does measure the ratio of the transverse momenta of the away-side jet to the trigger-side jet  

E-Print Network (OSTI)

Hard-scattering of point-like constituents (or partons) in p-p collisions was discovered at the CERN-ISR in 1972 by measurements utilizing inclusive single or pairs of hadrons with large transverse momentum ($p_T$). It was generally assumed, following Feynman, Field and Fox, as shown by data from the CERN-ISR experiments, that the $p_{T_a}$ distribution of away side hadrons from a single particle trigger [with $p_{T_t}$], corrected for of fragmentation would be the same as that from a jet-trigger and follow the same fragmentation function as observed in $e^+ e^-$ or DIS. PHENIX attempted to measure the fragmentation function from the away side $x_E\\sim p_{T_a}/p_{T_t}$ distribution of charged particles triggered by a $\\pi^0$ in p-p collisions at RHIC and showed by explicit calculation that the $x_E$ distribution is actually quite insensitive to the fragmentation function. Illustrations of the original arguments and ISR results will be presented. Then the lack of sensitivity to the fragmentation function will be explained, and an analytic formula for the $x_E$ distribution given, in terms of incomplete Gamma functions, for the case where the fragmentation function is exponential. The away-side distribution in this formulation has the nice property that it both exhibits $x_E$ scaling and is directly sensitive to the ratio of the away jet $\\hat{p}_{T_a}$ to that of the trigger jet, $\\hat{p}_{T_t}$, and thus can be used, for example, to measure the relative energy loss of the two jets from a hard-scattering which escape from the medium in A+A collisions. Comparisons of the analytical formula to RHIC measurements will be presented, including data from STAR and PHENIX, leading to some interesting conclusions.

M. J. Tannenbaum

2007-02-16T23:59:59.000Z

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

XE6_Tips_022011.pptx  

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

For For m ost u sers a nd a pplica1ons, u sing d efault s e5ngs w ork very well  For users who want to experiment to get the best performance t hey c an, t he f ollowing p resenta1on g ives y ou some informa1on on compilers and se5ngs to try  While i t d oesn't c over a bsolutely e verything, t he p resenta7on tries t o a ddress s ome o f t he t unable p arameters w hich w e h ave found t o p rovide i ncreased p erformance i n t he s itua7ons discussed 2 xtpe---mc12 If n o m odule i s l oaded, a nd n o ' arch' s pecified i n the c ompiler o p;ons, t he c ompilers d efault t o the n ode t ype o n w hich t he c ompiler i s r unning: Which m ay n ot b e t he s ame a s t he c ompute nodes ! 3 The best compiler is not the same for every applica1on 4  PGI - V ery g ood F ortran, o kay C a nd C ++  Good v ectoriza7on 

102

Systematic Method for Evaluating Extraction and Injection Flow Rates for 100-KR-4 and 100-HR-3 Groundwater Operable Unit Pump-and-Treat Interim Actions for Hydraulic Containment  

Science Conference Proceedings (OSTI)

This document describes a systematic method to develop flow rate recommendations for Pump-and-Treat (P&T) extraction and injection wells in 100-KR-4 and 100-HR-3 Groundwater Operable Units (OU) of the Hanford Site. Flow rate recommendations are developed as part of ongoing performance monitoring and remedy optimization of the P&T interim actions to develop hydraulic contairnnent of the dissolved chromium plume in groundwater and protect the Columbia River from further discharges of groundwater from inland. This document details the methodology and data required to infer the influence of individual wells near the shoreline on hydraulic containment and river protection and develop flow rate recommendations to improve system performance and mitigate potential shortcomings of the system configuration in place.

Spiliotopoulos, Alexandros A.

2013-03-20T23:59:59.000Z

103

Fission Product Monitoring and Release Data for the Advanced Gas Reactor -1 Experiment  

SciTech Connect

The AGR-1 experiment is a fueled multiple-capsule irradiation experiment that was irradiated in the Advanced Test Reactor (ATR) from December 26, 2006 until November 6, 2009 in support of the Very High Temperature Reactor (VHTR) Technology Development Office (TDO) Fuel Development and Qualification program. An important measure of the fuel performance is the quantification of the fission product releases over the duration of the experiment. To provide this data for the inert fission gasses(Kr and Xe), a fission product monitoring system (FPMS) was developed and implemented to monitor the individual capsule effluents for the radioactive species. The FPMS continuously measured the concentrations of various krypton and xenon isotopes in the sweep gas from each AGR-1 capsule to provide an indicator of fuel irradiation performance. Spectrometer systems quantified the concentrations of Kr-85m, Kr-87, Kr-88, Kr-89, Kr-90, Xe-131m, Xe-133, Xe 135, Xe 135m, Xe-137, Xe-138, and Xe-139 accumulated over repeated eight hour counting intervals.-. To determine initial fuel quality and fuel performance, release activity for each isotope of interest was derived from FPMS measurements and paired with a calculation of the corresponding isotopic production or birthrate. The release activities and birthrates were combined to determine Release-to-Birth ratios for the selected nuclides. R/B values provide indicators of initial fuel quality and fuel performance during irradiation. This paper presents a brief summary of the FPMS, the release to birth ratio data for the AGR-1 experiment and preliminary comparisons of AGR-1 experimental fuels data to fission gas release models.

Dawn M. Scates; John B. Walter; Jason M. Harp; Mark W. Drigert; Edward L. Reber

2010-10-01T23:59:59.000Z

104

Summary Report on the Volatile Radionuclide and Immobilization Research for FY2011 at PNNL  

Science Conference Proceedings (OSTI)

The materials development summarized here is in support of the Waste Forms campaign, Volatile Radionuclide task. Specifically, materials are being developed for the removal and immobilization of iodine and krypton, specifically 129I and 85Kr. During FY 2011, aerogel materials were investigated for removal and immobilization of 129I. Two aerogel formulations were investigated, one based on silica aerogels and the second on chalcogen-based aerogels (i.e., chalcogels). A silica aerogel was tested at ORNL for total I2 sorption capacity. It was determined to have 48 mass% capacity while having little physisorbed I2 (I2 not taken up in the aerogel pores). For 85Kr, metal organic framework (MOF) structures were investigated and a new MOF with about 8 mass% capacity for Xe and Kr. The selectivity can be changed from Xe > Kr to Xe < Kr simply by lowering the temperature below 0 C. A patent disclosure has been filed. Lastly, silicon carbide (SiC) was loaded with Kr. The diffusion of Kr in SiC was found to be less than detectable at 500 C.

Strachan, Denis M.; Chun, Jaehun; Matyas, Josef; Lepry, William C.; Riley, Brian J.; Ryan, Joseph V.; Thallapally, Praveen K.

2011-09-01T23:59:59.000Z

105

Demonstrate the removal efficiency and capacity of MOF materials for krypton recovery  

Science Conference Proceedings (OSTI)

Metal organic framework materials (MOFs) were developed and tested in support of the U.S. Department of Energy Office of Nuclear Energy, Fuel Cycle Technology Separations and Waste Forms Campaign. Specifically, materials are being developed for the removal of xenon (Xe) and krypton (Kr) from gaseous products of nuclear fuel reprocessing unit operations. Two metal organic framework structures were investigated in greater detail to demonstrate the removal efficiency and capacity of MOF materials for krypton recovery. Our two bed breakthrough measurements on NiDOBDC and FMOFCu indicate these materials can capture and separate parts per million levels of Xe and Kr from air. The removal efficiency and adsorption capacity for Kr on these two MOFs were further increased upon removal of Xe upfront.

Thallapally, Praveen K.; Liu, Jian; Strachan, Denis M.

2013-08-23T23:59:59.000Z

106

Oil & Natural Gas Technology  

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

8 FXe 0.1 1 10 100 1000 FNeFKr 0.001 0.01 0.1 1 10 Air-Like XeKr Enrichment from GasOil source Material Solubility Fractionation Hydrate Fractionation (Non-thermogenic source)...

107

Monitoring, Verifi  

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

O, C, H, N, and S; noble gases Kr, Ne, argon (Ar), He, xenon (Xe) and their isotopes; and radioactive isotopes (e.g., 3 H, 14 C, 36 Cl, 125 I, 129 I, 131 I) can be used to assess...

108

Experimental investigation of the chemistry of excited states of rare gases. Third quarterly progress report, April 15, 1979-July 15, 1979  

SciTech Connect

Photosensitized studies of Xe(/sup 3/P/sub 1/) and Kr(/sup 3/P/sub 1/) reactions with fluorine, chlorine, bromine, and iodine donors have been very productive. Work on the laser excitation methods for generating selected states of the rare gas atoms lying above the np/sup 5/,n + 1s set of levels continued.

Setser, D.W.

1979-07-01T23:59:59.000Z

109

REACTOR FUEL ELEMENTS TESTING CONTAINER  

DOE Patents (OSTI)

This patent shows a method for detecting leaks in jacketed fuel elements. The element is placed in a sealed tank within a nuclear reactor, and, while the reactor operates, the element is sparged with gas. The gas is then led outside the reactor and monitored for radioactive Xe or Kr. (AEC)

Whitham, G.K.; Smith, R.R.

1963-01-15T23:59:59.000Z

110

Facile xenon capture and release at room temperature using a metal-organic framework: a comparison with activated charcoal  

SciTech Connect

Two well known Metal organic frameworks (MOF-5, NiDOBDC) were synthesized and studied for facile xenon capture and separation. Our results indicate the NiDOBDC adsorbs significantly more xenon than MOF-5, releases it more readily than activated carbon, and is more selective for Xe over Kr than activated carbon.

Thallapally, Praveen K.; Grate, Jay W.; Motkuri, Radha K.

2012-01-11T23:59:59.000Z

111

Nielsen, Mads Pagh; Kr, Sren Knudsen; Korsgaard, Anders Published in  

E-Print Network (OSTI)

one year. Three scenarios are analyzed ranging from heat following only (grid compensation combined heat and power fuel cell system. International Journal of Hydrogen Energy, 33(7), 1921: Control of a novel HTPEM-based micro combined heat and power fuel cell system Anders R. Korsgaard?, Mads P

Nielsen, Mads Pagh

112

Gas phase 129Xe NMR imaging and spectroscopy  

E-Print Network (OSTI)

5 l l Dynamic NMR microscopy of gas phase Poiseuille flowmetal vapors and noble gases can be used to efficientlypolarize the nuclei ofthe noble-gas atoms. As a result, the

Kaiser, Lana G.

2010-01-01T23:59:59.000Z

113

XIN CAO LOI, A HET CHO AU XE  

Science Conference Proceedings (OSTI)

... i ROBERT J. FLORES Ch? Th??ng Nghi?p LUCILLE KRING ... ngn kho?n ? trong ti nguyn c?a ti?u ... 66-Cc Gi?i H?n V? Lu?t "Ba L?n Ph?m ...

2010-03-22T23:59:59.000Z

114

Gas phase 129Xe NMR imaging and spectroscopy  

E-Print Network (OSTI)

Kuethe, A. Caprihan, E. Fukushima, and R. A. Waggoner, Magn.Press, Oxford (1987) 6. E. Fukushima and S. B. W. Roeder,

Kaiser, Lana G.

2010-01-01T23:59:59.000Z

115

Grace Hopper Powers Science on NERSC's New Cray XE6  

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

Hopper created the first compiler. She was a champion for increasing the usability of computers, understanding that their power and reach would be limited unless they were made to...

116

Method of detecting leakage of reactor core components of liquid metal cooled fast reactors  

DOE Patents (OSTI)

A method of detecting the failure of a sealed non-fueled core component of a liquid-metal cooled fast reactor having an inert cover gas. A gas mixture is incorporated in the component which includes Xenon-124; under neutron irradiation, Xenon-124 is converted to radioactive Xenon-125. The cover gas is scanned by a radiation detector. The occurrence of 188 Kev gamma radiation and/or other identifying gamma radiation-energy level indicates the presence of Xenon-125 and therefore leakage of a component. Similarly, Xe-126, which transmutes to Xe-127 and Kr-84, which produces Kr-85.sup.m can be used for detection of leakage. Different components are charged with mixtures including different ratios of isotopes other than Xenon-124. On detection of the identifying radiation, the cover gas is subjected to mass spectroscopic analysis to locate the leaking component.

Holt, Fred E. (Richland, WA); Cash, Robert J. (Richland, WA); Schenter, Robert E. (Richland, WA)

1977-01-01T23:59:59.000Z

117

Mound Facility activities in chemical and physical research: July-December 1979  

DOE Green Energy (OSTI)

Research is reported in the following fields: isotope separation (Ar, C, He, Kr, Ne, O, Xe), low-temperature research (H intermolecular potential functions, gas analysis in trennschaukel), separation chemistry (/sup 229/Th, /sup 231/Pa, /sup 230/Th, /sup 234/U), separation research (liquid thermal diffusion, Ca isotope separation, molecular beam scattering, mutual diffusion of noble gas mixtures, lithium chemical exchange with cryptands), and calculations in plutonium chemistry (algorithms, valence in natural water). (DLC)

Not Available

1980-06-18T23:59:59.000Z

118

On the possible noble gas deficiency of Pluto's atmosphere  

E-Print Network (OSTI)

We use a statistical-thermodynamic model to investigate the formation and composition of noble-gas-rich clathrates on Pluto's surface. By considering an atmospheric composition close to that of today's Pluto and a broad range of surface pressures, we find that Ar, Kr and Xe can be efficiently trapped in clathrates if they formed at the surface, in a way similar to what has been proposed for Titan. The formation on Pluto of clathrates rich in noble gases could then induce a strong decrease in their atmospheric abundances relative to their initial values. A clathrate thickness of order of a few centimeters globally averaged on the planet is enough to trap all Ar, Kr and Xe if these noble gases were in protosolar proportions in Pluto's early atmosphere. Because atmospheric escape over an extended period of time (millions of years) should lead to a noble gas abundance that either remains constant or increases with time, we find that a potential depletion of Ar, Kr and Xe in the atmosphere would best be explained ...

Mousis, Olivier; Mandt, Kathleen E; Schindhelm, Eric; Weaver, Harold A; Stern, S Alan; Waite, J Hunter; Gladstone, Randy; Moudens, Audrey

2013-01-01T23:59:59.000Z

119

Computational investigation of noble gas adsorption and separation by nanoporous materials.  

SciTech Connect

Molecular simulations are used to assess the ability of metal-organic framework (MOF) materials to store and separate noble gases. Specifically, grand canonical Monte Carlo simulation techniques are used to predict noble gas adsorption isotherms at room temperature. Experimental trends of noble gas inflation curves of a Zn-based material (IRMOF-1) are matched by the simulation results. The simulations also predict that IRMOF-1 selectively adsorbs Xe atoms in Xe/Kr and Xe/Ar mixtures at total feed gas pressures of 1 bar (14.7 psia) and 10 bar (147 psia). Finally, simulations of a copper-based MOF (Cu-BTC) predict this material's ability to selectively adsorb Xe and Kr atoms when present in trace amounts in atmospheric air samples. These preliminary results suggest that Cu-BTC may be an ideal candidate for the pre-concentration of noble gases from air samples. Additional simulations and experiments are needed to determine the saturation limit of Cu-BTC for xenon, and whether any krypton atoms would remain in the Cu-BTC pores upon saturation.

Allendorf, Mark D. (Sandia National Laboratories, Livermore, CA); Sanders, Joseph C.; Greathouse, Jeffery A.

2008-10-01T23:59:59.000Z

120

Multiple Electron Stripping of Heavy Ion Beams  

DOE Green Energy (OSTI)

One approach being explored as a route to practical fusion energy uses heavy ion beams focused on an indirect drive target. Such beams will lose electrons while passing through background gas in the target chamber, and therefore it is necessary to assess the rate at which the charge state of the incident beam evolves on the way to the target. Accelerators designed primarily for nuclear physics or high energy physics experiments utilize ion sources that generate highly stripped ions in order to achieve high energies economically. As a result, accelerators capable of producing heavy ion beams of 10 to 40 Mev/amu with charge state 1 currently do not exist. Hence, the stripping cross-sections used to model the performance of heavy ion fusion driver beams have, up to now, been based upon theoretical calculations. We have investigated experimentally the stripping of 3.4 Mev/amu Kr 7+ and Xe +11 in N2; 10.2 MeV/amu Ar +6 in He, N2, Ar and Xe; 19 MeV/amu Ar +8 in He, N2, Ar and Xe; 30 MeV He 1 + in He, N2, Ar and Xe; and 38 MeV/amu N +6 in He, N2, Ar and Xe. The results of these measurements are compared with the theoretical calculations to assess their applicability over a wide range of parameters.

D. Mueller; L. Grisham; I. Kaganovich; R. L. Watson; V. Horvat; K. E. Zaharakis; Y. Peng

2002-06-25T23:59:59.000Z

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


121

MARMOT Enhanced | Department of Energy  

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

MARMOT Enhanced MARMOT Enhanced MARMOT Enhanced January 29, 2013 - 10:23am Addthis Lower-length-scale Model Development To develop mechanistic models for fuel thermal conductivity, the Fuel team used supercells up to 55 nm long to determine the thermal conductivity of UO2 with Xe incorporated. Atomistic simulations were used to determine thermal resistance values for four different types of grain boundaries, and these values have been used in meso-scale simulations of heat transport through representative fuel microstructures. [LANL] Density functional theory techniques, previously applied to diffusion of Xe in UO2, have now been extended to Kr. Thus, both major gaseous fission products are now included in the simulations, which have identified the transport mechanism as being vacancy mediated. Activation energies have

122

UTICA 4, NEW YORK COFIPOR~TION  

Office of Legacy Management (LM)

DROf fORGE & TOOL DROf fORGE & TOOL UTICA 4, NEW YORK COFIPOR~TION PHONE 3- 2331 July 5, 1955 ?:r. E. J. Block Director of Production Division United Staton Atomic ::norgy Commission Yiashington, D. C. Dear Xr. 1310~1~: Xe had a visit last Thursday from Kr. R. C. Sale11 of the: Atomic Energy Commission who inspected our vacuum melting facilities. EIz suggested that we should get in touch with you and that you r+ht be interested in the use of our facilities for the i>roduction of uranium fuel elements. Xe have at the present time the largest coxnercial vacuum installation in the country and m have been producin; high tc~poraturc alloys for the aircraft industry for over txro 'years. ;Is have produced to date Over 400,000 pounds of mtal. Our present rate of production is of the order

123

Analysis of fission gas release kinetics by on-line mass spectrometry  

SciTech Connect

The release of fission gas (Xe and Kr) and helium out of nuclear fuel materials in normal operation of a nuclear power reactor can constitute a strong limitation of the fuel lifetime. Moreover, radioactive isotopes of Xe and Kr contribute significantly to the global radiological source term released in the primary coolant circuit in case of accidental situations accompanied by fuel rod loss of integrity. As a consequence, fission gas release investigation is of prime importance for the nuclear fuel cycle economy, and is the driven force of numerous R and D programs. In this domain, for solving current fuel behavior understanding issues, preparing the development of new fuels (e.g. for Gen IV power systems) and for improving the modeling prediction capability, there is a marked need for innovations in the instrumentation field, mainly for: . Quantification of very low fission gas concentrations, released from fuel sample and routed in sweeping lines. Monitoring of quick gas release variations by quantification of elementary release during a short period of time. Detection of a large range of atomic masses (e.g. H{sub 2}, HT, He, CO, CO{sub 2}, Ne, Ar, Kr, Xe), together with a performing separation of isotopes for Xe and Kr elements. Coupling measurement of stable and radioactive gas isotopes, by using in parallel mass spectrometry and gamma spectrometry techniques. To fulfill these challenging needs, a common strategy for analysis equipment implementation has been set up thanks to a recently launched collaboration between the CEA and the Univ. of Provence, with the technological support of the Liverpool Univ.. It aims at developing a chronological series of mass spectrometer devices based upon mass filter and 2D/3D ion traps with Fourier transform operating mode and having increasing levels of performances to match the previous challenges for out-of pile and in-pile experiments. The final objective is to install a high performance online mass spectrometer coupled to a gamma spectrometer in the fission product laboratory of the future Jules Horowitz Material Test Reactor. An intermediate step will consist of testing first equipment on an existing experimental facility in the LECA-STAR Hot Cell Laboratory of the CEA Cadarache. This paper presents the scientific and operational stakes linked to fission gas issues, resumes the current state of art for analyzing them in nuclear facilities, then presents the skills gathered through this collaboration to overcome technological bottlenecks. Finally it describes the implementation strategy in nuclear research facilities of the CEA Cadarache. (authors)

Zerega, Y.; Reynard-Carette, C. [Univ. of Provence, Laboratoire Chimie Provence, UMR 6264, Avenue escadrille Normandie - Niemen, F-13397 Marseille (France); Parrat, D. [CEA, Nuclear Energy Div. DEN, CEA Cadarache, F-13108 Saint-Paul-lez-Durance (France); Carette, M. [Univ. of Provence, Laboratoire Chimie Provence, UMR 6264, Avenue escadrille Normandie - Niemen, F-13397 Marseille (France); Brkic, B. [Univ. of Liverpool, Dept. of Electrical Engineering and Electronics, Liverpool L69 3BX (United Kingdom); Lyoussi, A.; Bignan, G. [CEA, Nuclear Energy Div. DEN, CEA Cadarache, F-13108 Saint-Paul-lez-Durance (France); Janulyte, A.; Andre, J. [Univ. of Provence, Laboratoire Chimie Provence, UMR 6264, Avenue escadrille Normandie - Niemen, F-13397 Marseille (France); Pontillon, Y.; Ducros, G. [CEA, Nuclear Energy Div. DEN, CEA Cadarache, F-13108 Saint-Paul-lez-Durance (France); Taylor, S. [Univ. of Liverpool, Dept. of Electrical Engineering and Electronics, Liverpool L69 3BX (United Kingdom)

2011-07-01T23:59:59.000Z

124

Numerical study and validation of one swirling flame , Sren K. Kr, Chungen Yin  

E-Print Network (OSTI)

. This is of great importance in simulating swirling non-premixed combustion. As widely using in industry, unsteady in diameter, surrounded by a ceramic faced bluff-body with 50 mm in diameter. Swirling flow comes out

Yin, Chungen

125

Krypton Fluoride (KrF) Laser Driver for Inertial Fusion Energy  

Science Conference Proceedings (OSTI)

IFE / Proceedings of the Twentieth Topical Meeting on the Technology of Fusion Energy (TOFE-2012) (Part 1), Nashville, Tennessee, August 27-31, 2012

Matthew F. Wolford; John D. Sethian; Matthew C. Myers; Frank Hegeler; John L. Giuliani; Stephen P. Obenschain

126

Mean K-R Relationships: Practical Results for Typical Weather Radar Wavelengths  

Science Conference Proceedings (OSTI)

Total attenuation cross sections of raindrops derived from the Mie theory for wavelengths of 3.2, 5.6, and 10 cm and temperatures of ?10, 0, 10, and 20C have been calculated and compared to the results of the Rayleigh approximation. The ...

G. Delrieu; J. D. Creutin; I. Saint-Andre

1991-08-01T23:59:59.000Z

127

Processes for Removal and Immobilization of 14C, 129I, and 85Kr  

SciTech Connect

This is a white paper covering the results of a literature search and preliminary experiments on materials and methods to remove and immobilize gaseous radionuclided that come from the reprocessing of spent nuclear fuel.

Strachan, Denis M.; Bryan, Samuel A.; Henager, Charles H.; Levitskaia, Tatiana G.; Matyas, Josef; Thallapally, Praveen K.; Scheele, Randall D.; Weber, William J.; Zheng, Feng

2009-10-05T23:59:59.000Z

128

The interactions of high-energy, highly charged Xe ions with buckyballs  

SciTech Connect

Ionization and fragmentation have been measured for C{sub 60} molecules bombarded by highly charged (up to 35+) xenon ions with energies ranging up to 625 MeV. The observed mass distribution of positively charged fragments is explained in terms of a theoretical model indicating that the total interaction cross section contains roughly equal contributions from (a) excitation of the giant plasmon resonance, and (b) large-energy-transfer processes that lead to multiple fragmentation of the molecule. Preliminary results of measurements on VUV photons emitted in these interactions are also presented.

Ali, R.; Berry, H.G.; Cheng, S. [and others

1994-12-31T23:59:59.000Z

129

Liquid-Gas Coexistence Region in Central Xe+Sn Reactions  

E-Print Network (OSTI)

Charge partitions and distributions of fragments emitted in multifragmentation of fused systems produced in central collisions are studied over the incident energy range 32-50 MeV per nucleon. Most of the charged products are well identified thanks to the high performances of the INDRA 4pi array. Supported by dynamical calculations, charge correlations are used t$ evidence, or not, spinodal instabilities and consequently the liquid-gas coexistence region over the considered incident energy range. It was claimed in the last few years that mass/charge distributions should follow a power law behavior in the coexistence region. The Z distributions measured are discussed. A first attempt is made to derive in which Z region the border between liquid and gas parts is located.

B. Borderie; M. F Rivet; G. Tabacaru; M. Colonna; P. Desesquelles; M. Parlog; the Indra collaboration

2001-06-06T23:59:59.000Z

130

New Tools for Chemically Directed Glycoproteomics and Xe-based MRI Contrast Agents  

E-Print Network (OSTI)

While this method facilitated the rapid dissolution of xenonWhile this method facilitated the rapid dissolution of xenonWhile this method facilitated the rapid dissolution of xenon

Palaniappan, Krishnan K.

2012-01-01T23:59:59.000Z

131

Exploiting atomic operations for barrier on cray XE/XK systems  

Science Conference Proceedings (OSTI)

Barrier is a collective operation used by many scientific applications and parallel libraries for synchronization. Typically, a Barrier operation is implemented by exchanging a short data message that requires demultiplexing, thereby adding ... Keywords: MPI, atomic operations, barrier, collectives, cray, gemini

Manjunath Gorentla Venkata; Richard L. Graham; Joshua S. Ladd; Pavel Shamis; Nathan T. Hjelm; Samuel K. Gutierrez

2012-09-01T23:59:59.000Z

132

Thermal Conductivity Measurement of Xe-Implanted Uranium Dioxide Thick Films using Multilayer Laser Flash Analysis  

SciTech Connect

The Fuel Cycle Research and Development program's Advanced Fuels campaign is currently pursuing use of ion beam assisted deposition to produce uranium dioxide thick films containing xenon in various morphologies. To date, this technique has provided materials of interest for validation of predictive fuel performance codes and to provide insight into the behavior of xenon and other fission gasses under extreme conditions. In addition to the structural data provided by such thick films, it may be possible to couple these materials with multilayer laser flash analysis in order to measure the impact of xenon on thermal transport in uranium dioxide. A number of substrate materials (single crystal silicon carbide, molybdenum, and quartz) containing uranium dioxide films ranging from one to eight microns in thickness were evaluated using multilayer laser flash analysis in order to provide recommendations on the most promising substrates and geometries for further investigation. In general, the uranium dioxide films grown to date using ion beam assisted deposition were all found too thin for accurate measurement. Of the substrates tested, molybdenum performed the best and looks to be the best candidate for further development. Results obtained within this study suggest that the technique does possess the necessary resolution for measurement of uranium dioxide thick films, provided the films are grown in excess of fifty microns. This requirement is congruent with the material needs when viewed from a fundamental standpoint, as this length scale of material is required to adequately sample grain boundaries and possible second phases present in ceramic nuclear fuel.

Nelson, Andrew T. [Los Alamos National Laboratory

2012-08-30T23:59:59.000Z

133

Xe adsorption on metal surfaces: First-principles investigations Juarez L. F. Da Silva,1,  

E-Print Network (OSTI)

a kinetic-energy cutoff for the plane wave basis of Ewf max 18 Ry. This is a rather high value and makes value for Ewf max was manda- tory to ensure good numerical accuracy. Details of the calculations

134

Energy Levels and Observed Spectral Lines of Xenon, XeI ...  

Science Conference Proceedings (OSTI)

... Spectrosc. USSR 68, 10 1990. 99MOH PJ Mohr and BN Taylor, J. Phys. Chem. ... 60, 1302 1970. 71CHE M. Chenevier and TD Nguyen, Phys. Lett. ...

2008-06-09T23:59:59.000Z

135

Using the Cray XE6 Training at NERSC February 7-8, 2011  

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

X line of supercomputers. It is intended for those who already have some High Performance Computing experience. The ability to use Linux, Fortran, C, andor C++, and exposure...

136

PuXe, UXe, UPb chronology and isotope systematics of ancient zircons from Western Australia  

E-Print Network (OSTI)

; 137 Cs; plutonium; Changjiang River 1. Introduction The East China Sea (ECS) is a marginal sea over- tory and distribution of fallout plutonium. Nature 241, 444^ 445. Hsueh, Y., Wang, J., Chern, C.-M., 1996. Lead- 210 and plutonium fallout in Taiwan as recorded at a sub- alpine lake. J. Southeast Asian

137

A quantum calculation of multipole relaxation and transfer cross sections in collisions of Na with Xe  

Science Conference Proceedings (OSTI)

Well?established quantum mechanical methods were used to calculate multipole cross sections in sodiumxenon collisions. The cross sections were opacity analyzed to determine the relative importance of various angular momenta; the relaxation of the alignment was found to be the multipole most dependent upon low angular momenta (e.g.

Paul L. DeVries

1984-01-01T23:59:59.000Z

138

Distinguishing multiple chemotaxis Y protein conformations with laser-polarized 129Xe NMR  

E-Print Network (OSTI)

al. 1998. Crystallography & NMR system: A new software suiteand Pelton, J.G. 2000. NMR Structure of Activated CheY. J.hyperpolarized xenon-129 NMR. J. Am. Chem. Soc. 121: 9370

Lowery, Thomas J.; Doucleff, Michealeen; Ruiz, E. Janette; Rubin, Seth M.; Pines, Alexander; Wemmer, David E.

2005-01-01T23:59:59.000Z

139

High-resolution spectroscopic diagnostics of very high-temperature plasmas in the hard x-ray regime  

SciTech Connect

Motivated by the need for establishing a reliable database useful for the application of x-ray spectroscopic tools for the diagnostic of very high temperature plasmas, high-resolution crystal spectrometer measurements have been performed investigating the characteristic K-shell radiation of highly charged krypton and xenon. The measurements, which have been performed at the Electron-Beam-Ion-Trap (EBIT) facility of the Lawrence Livermore National Laboratory, include the investigation of the n = 2 {yields} 1 transitions in heliumlike krypton (Kr{sup 34+}) and innershell excited lithiumlike krypton (Kr{sup 33+}) utilizing a conventional reflection-type crystal spectrometer of von Hamos geometry. The electron-excitation-energy selective measurements map the contribution of the dielectronic recombination lines providing the means of accurate interpretation of the line profiles of the characteristic K{alpha} x-ray emission of plasmas. The high-resolution measurements of the n = 2 {yields} 1 transitions in heliumlike xenon (Xe{sup 52+}) and hydrogenlike xenon (Xe{sup 53+}) were based on a new transmission-type crystal spectrometer of DuMond geometry. The resolving power of the developed spectrometer was sufficient for charge state specific observation allowing the determination of the electron-impact excitation cross section for the hydrogen- and heliumlike K{alpha} transitions. The disagreement with theoretically predicted values is a measure of the magnitude of the Breit interaction for the highly charged high-Z ions.

Widmann, K

1999-12-06T23:59:59.000Z

140

First-principles calculations of the stability and incorporation of helium, xenon and krypton in uranium  

SciTech Connect

While metallic fuels have a long history of reactor use, their fundamental physical and thermodynamic properties are not well understood. Many metallic nuclear fuels are body-centered cubic alloys of uranium that swell under fission conditions, creating fission product gases such as helium, xenon and krypton. In this paper, helium, xenon, and krypton point defects are investigated in the a and ? phases of metallic uranium using first principles calculations. A density functional theory (DFT) framework is utilized with projector augmented-wave (PAW) pseudopotentials. Formation and incorporation energies of He, Xe, and Kr are calculated at various defect positions for the prediction of fission gas behavior in uranium. In most cases, defect energies follow a size effect, with helium incorporation and formation energies being the smallest. The most likely position for the larger Xe and Kr atoms in uranium is the substitutional site. Helium atoms are likely to be found in a wide variety of defect positions due to the comparable formation energies of all defect configurations analyzed. This is the first detailed study of the stability and incorporation of fission gases in uranium.

B. Beeler; B. Good; S. Rashkeev; M. Baskes; M. Okuniewski

2012-06-01T23:59:59.000Z

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


141

Vibrational relaxation of matrix-isolated CH/sub 3/F and HCl  

SciTech Connect

Kinetic and spectroscopic studies have been performed on CH/sub 3/F and HCl as a function of host matrix and temperature. Temporally and spectrally resolved infrared fluorescence was used to monitor the populations of both the initially excited state and the lower lying levels which participate in the relaxation process. For CH/sub 3/F, relaxation from any of the levels near 3.5 ..mu.., i.e. the CH stretching fundamentals or bend overtones, occurs via rapid (< 5 ns) V ..-->.. V transfer to 2..nu../sub 3/ with subsequent relaxation of the ..nu../sub 3/ (CF stretch) manifold. Lifetimes of 2..nu../sub 3/ and ..nu../sub 3/ were determined through overtone, ..delta..V = 2, and fundamental fluorescence. These lifetimes show a dramatic dependence on host lattice, an increase of two orders of magnitude in going from Xe and Ar matrices. Lifetimes depend only weakly on temperature. The relaxation of 2..nu../sub 3/ and ..nu../sub 3/ is consistent with a model in which production of a highly rotationally excited guest via collisions with the repulsive wall of the host is the rate limiting step. For HCl, lifetimes of v = 1,2,3 have been determined. In all hosts, the relaxation is non-radiative. For a given vibrational state, v, the relaxation rate increases in the series k(Ar) < k(Kr) < k(Xe). The dependence of the relaxation rate; on v is superlinear in all matrices, the deviation from linearity increasng in the order Ar < Kr < Xe. The relaxation rates become more strongly temperature dependent with increasing vibrational excitation. The results are consistent with a mechanism in which complex formation introduces the anisotropy necessary to induce a near resonant V ..-->.. R transition in the rate limiting step.

Young, L.

1981-08-01T23:59:59.000Z

142

---Home Yahoo! Help My Yahoo! http://asia.news.yahoo.com/041102/kyodo/d863kr500.html  

E-Print Network (OSTI)

November 2, 17:04 PM Japan, EU, others to discuss nuclear fusion reactor next week Japan, the European where they will build the world's first prototype nuclear fusion reactor, Japan's science ministry said are believed to have said the European Union should go it alone in building a nuclear fusion reactor

143

To whom correspondence should be addressed. Fax: 82-2-886-8516. E-mail: mpsuh@snu.ac.kr.  

E-Print Network (OSTI)

Nandini Swarup MUPP Dec-04 Kristen Hoschouer MUPP May-06 Sonali Tandon MUPP May-06 Benoy Jacob PA-PhD May

Paik Suh, Myunghyun

144

PHYSICAL REVIEW VOLUME i 88, NUMBER 3 15 DECEM B ER 1969 Diffusion of Kr Isotopes in Solid Ar)  

E-Print Network (OSTI)

A'usion, the crystal is annealed until grain growth ceases (1--15 h). The effective surface area A for diffusion in equi- librium with the crystal is replaced, at constant pres- sure, by Ar vapor containing a low Energy of Canada Ltd. , Chalk River Nuclear Laboratories, Chalk River, Ontario, Canada. ' D. L. Losee

Glyde, Henry R.

145

ANGULAR MOMENTUM TRANSFER AND PARTITION IN THE DEEP-INELASTIC REACTION: 664 MeV 84kr + natAg.  

E-Print Network (OSTI)

angles (with an in-plane projection approximately coincidingdistribution for the projection (K) of the angular momentumemission. The in-plane projection of the out-of-plane angles

Sobotka, L.G.

2013-01-01T23:59:59.000Z

146

Near-Field Nonuniformities in Angularly-Multiplexed KrF Fusion Lasers with Induced Spatial Incoherence  

E-Print Network (OSTI)

Incoherence R. H. Lehmberg and Y. Chan Plasma Physics Division, U. S. Naval Research Laboratory Washington, DC beyond the 6 meter focusing lenses, so the geometrical beamwidths at the windows are DW = 5/6DC = 12.5 cm zAC. The collimated beam of geometrical optics width DC

147

Electra: An Electron Beam Pumped KrF Rep-Rate Laser System for Inertial Fusion Energy  

Science Conference Proceedings (OSTI)

High Average Power Laser and Other IFE R&D / Eighteenth Topical Meeting on the Technology of Fusion Energy (Part 1)

P. M. Burns et al.

148

Characterization of a medium size Xe/TMA TPC instrumented with microbulk Micromegas, using low-energy \\gamma-rays  

E-Print Network (OSTI)

NEXT-MM is a general-purpose high pressure (10 bar, $\\sim25$ l active volume) Xenon-based TPC, read out in charge mode with an 8 cm $\\times$8 cm-segmented 700 cm$^2$ plane (1152 ch) of the latest microbulk-Micromegas technology. It has been recently commissioned at University of Zaragoza as part of the R&D of the NEXT $0\

Alvarez, V; Carcel, S; Castel, J; Cebrian, S; Cervera, A; Conde, C A N; Dafni, T; Dias, T H V T; Diaz, J; Egorov, M; Esteve, R; Evtoukhovitch, P; Fernandes, L M P; Ferrario, P; Ferreira, A L; Freitas, E D C; Gehman, V M; Gil, A; Goldschmidt, A; Gomez, H; Gomez-Cadenas, J J; Gonzalez-Diaz, D; Gutierrez, R M; Hauptman, J; Morata, J A Hernando; Herrera, D C; Iguaz, F J; Irastorza, I G; Jinete, M A; Labarga, L; Laing, A; Liubarsky, I; Lopes, J A M; Lorca, D; Losada, M; Luzon, G; Mari, A; Martin-Albo, J; Martinez, A; Martinez-Lema, G; Miller, T; Moiseenko, A; Monrabal, F; Monteiro, C M B; Mora, F J; Moutinho, L M; Vidal, J Munoz; da Luz, H Natal; Navarro, G; Nebot-Guinot, M; Nygren, D; Oliveira, C A B; Palma, R; Perez, J; Aparicio, J L Perez; Renner, J; Ripoll, L; Rodriguez, A; Rodriguez, J; Santos, F P; Santos, J M F dos; Segui, L; Serra, L; Shuman, D; Simon, A; Sofka, C; Sorel, M; Toledo, J F; Tomas, A; Torrent, J; Tsamalaidze, Z; Vazquez, D; Veloso, J F C A; Villar, J A; Webb, R C; White, J T; Yahlali, N; Aznar, F; Calvet, D; Druillole, F; Ferrer-Ribas, E; Garcia, J A; Giomataris, I; Gracia, J; Coguie, A Le; Mols, J P; Pons, P; Ruiz, E

2013-01-01T23:59:59.000Z

149

Measurement of the Double-Beta Decay Half-life of 136Xe in KamLAND-Zen  

E-Print Network (OSTI)

with con- tamination by fallout from the Fukushima-I reactormaterials by Fukushima fallout, which include 110m Ag. OnePo- tential backgrounds from fallout nuclei with half-lives

Gando, A.

2013-01-01T23:59:59.000Z

150

Measurement of the Double-Beta Decay Half-life of 136Xe in KamLAND-Zen  

E-Print Network (OSTI)

by fallout from the Fukushima-I reactor accident in Marchof detector materials by Fukushima fallout, which includeCo are not detected near Fukushima or our soil samples, we

Gando, A.

2013-01-01T23:59:59.000Z

151

Microsoft Word - Final CSERD Ch 7.doc  

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

7-1 7-1 7.0 GLOSSARY AND ACRONYMS ACRONYM OR TERM DEFINITION µg/m 3 microgram per cubic meter µg/mL microgram per milliliter 132 Xe Xenon 132 1-hour average ozone concentrations the EPA air quality standard for ozone is 0.12 part per million for a 1-hour average 20 Ne Neon 20 36 Ar Argon 36 84 Kr Krypton 84 8-hour average ozone concentrations the EPA air quality standard for ozone, designed to protect public health with an adequate margin of safety, is 0.085 parts per million (ppm), averaged over 8 hours ac acres ACHP Advisory Council on Historic Preservation AEP American Electric Power afforestation the conversion of bare or cultivated land into forest AGR acid gas removal AHPA Archeological and Historic Preservation Act AIH American Institute of Hydrology

152

Noble Gas Geochemistry In Thermal Springs | Open Energy Information  

Open Energy Info (EERE)

Geochemistry In Thermal Springs Geochemistry In Thermal Springs Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Noble Gas Geochemistry In Thermal Springs Details Activities (1) Areas (1) Regions (0) Abstract: The composition of noble gases in both gas and water samples collected from Horseshoe Spring, Yellowstone National Park, was found to be depth dependent. The deeper the sample collection within the spring, the greater the enrichment in Kr, Xe, radiogenic 4He, and 40Ar and the greater the depletion in Ne relative to 36Ar. The compositional variations are consistent with multi-component mixing. The dominant component consists of dissolved atmospheric gases acquired by the pool at the surface in contact with air. This component is mixed in varying degree with two other

153

Detecting Weak Interactions between Au- and Gas Molecules: A Photoelectron Spectroscopic and Ab Initio Study  

DOE Green Energy (OSTI)

In this communication, we report a joint experimental and theoretical study of the interactions between gold anion, Au-, and an NG atom (NG ) Ne, Ar, Kr, Xe) or a molecule of O2, CH4, or H2O. Except for the Au- H2O interaction, which is comparable to strong hydrogen bonding, all of these are weak charge-induced intermolecular interactions. The observation of a weakly bound Au(O2)- complex shows the inertness of Au- toward O2, in line with the previous observation of the odd-even effect in the reactions of Aun - clusters and O2. By comparing with results of high-level ab initio calculations, we demonstrate that anion PES is a good technique for probing weak charge-induced intermolecular interactions.

Gao, Yi; Huang, Wei; Woodford, Jeffrey; Wang, Lai S.; Zeng, Xiao Cheng

2009-06-19T23:59:59.000Z

154

Health Behaviour in School-aged Children (HSBC) Study: International Report from the 2009/2010 Survey Health Policy for Children and Adolescents, No. 6  

E-Print Network (OSTI)

Blevins KR, eds. Taking stock: the status of criminologicalBlevins KR, eds. Taking stock: the status of criminological

WHO

2012-01-01T23:59:59.000Z

155

Utilization of the noble gases in studies of underground nuclear detonations  

SciTech Connect

From symposium on noble gases; Las Vegas, Nevada, USA (24 Sep 1973). The Livermore Gas Diagnostics Program employs a number of rare gas isotopes, both stable and radioactive, in its investigations of the phenomenology of underground nuclear detonations. Radioactive gases in a sample are radiochemically purified by elution chromatography, and the separated gases are radioassayed by gamma-ray spectrometry and by internal or thin-window beta proportional counting. Concentrations of the stable gases are determined by mass-spectrometry, following chemical removal of the reactive gases in the sample. The most general application of the noble gases is as device fraction indicators to provide a basis for estimating totals of chimney-gas components. All of the stable rare gases except argon have been used as tracers, as have /sup 127/Xe and /sup 85/Kr. /sup 37/Ar and /sup 85/Kr have proven to be of particular value in the absence of a good tracer material as reference species for studies of chimney-gas chemistry. The rate of mixing of chimney gases and the degree to which the sampled gas truly represents the underground gas mixture can be studied with the aid of the fission- product gases. /sup 222/Ra and He are released to the cavity from the surrounding rock and are therefore useful in studies of the interaction of the detonation with the surrounding medium. (auth)

Smith, C.F.

1973-09-17T23:59:59.000Z

156

Exclusive License: AGMT-XXXX  

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

5.20.2011 UU.S. DEPARTMENT OF ENERGY UNATIONAL ENERGY TECHNOLOGY LABORATORY UEXCLUSIVE PATENT LICENSE AGREEMENT This Agreement is by and between the United States Department of...

157

EVIDENCE FOR RIGID ROTATION AND LARGE DEFORMATIONS IN THE DEEP INELASTIC REACTION: 664 MeV 84kr + natAg  

E-Print Network (OSTI)

so that its in-plane projection approximately coincided withis the root-mean-square projection of the angular momentumindicates their in-plane projection and a dashed arc their

Sobotka, L.G.

2013-01-01T23:59:59.000Z

158

Image & Video Galleries  

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

Systems NERSC Systems Edison-phase-I.jpg Edison, Phase I 16.jpg Hopper Cray XE6 supercomputer 14.jpg Hopper Cray XE6 supercomputer 18.jpg Hopper Cray XE6 supercomputer...

159

Strong-Field Excitation of Liquid and Solid Xe Using Intense Femtosecond Pulses M. Pettersson, R. Zadoyan, J. Eloranta, N. Schwentner,| and V. A. Apkarian*  

E-Print Network (OSTI)

-driven molecular centrifuge.10 There are important differences between such applications in the gas phase versus

Apkarian, V. Ara

160

Radiochemistry as a (rho)R Diagnostic with the RAGS Gas Collection System  

SciTech Connect

Radiochemical diagnostic techniques such as gas-phase capsule debris analysis may prove to be successful methods for establishing the success or failure of ignition experiments at the National Ignition Facility (NIF). Samples in the gas phase offer the most direct method of collection by simply pumping out the large target chamber following a NIF shot. The target capsules will be prepared with dopants which will produce radioactive noble gas isotopes upon activation with neutrons. We have designed and constructed the Radchem Apparatus for Gas Sampling (RAGS) in order to collect post-shot gaseous samples for NIF capsule diagnostics. The design of RAGS incorporates multiple stages intended to purify, transfer, and count the radioactive decays from gaseous products synthesized in NIF experiments. At the moment the dopant of choice is {sup 124}Xe, which will undergo (n,{gamma}) and (n, 2n) reactions to produce {sup 125}Xe and {sup 123}Xe. The half-lives of each are on the order of multiple hours and are suitable for long-term gamma-counting. These isotopes and the rest of the gases evolved in a NIF shot will be drawn through the NIF turbo pumps, past the temporarily shuttered cryo pumps (to aid our collection efficiency), and towards the first main portion of the RAGS system: the pre-cleaner. The pre-cleaner will consist of a water removal system, a series of heated getter cartridges to remove most other impurities such as N{sub 2}, O{sub 2}, CO{sub 2}, etc., and a residual gas analyzer (RGA) to monitor vacuum quality. The noble gases will flow through the precleaner and into the second stage of the system: the cryo collector. This cryo collector consists of a main cryo head for noble gas collection which will operate for approximately five minutes post-shot. Afterwards a valve will close and isolate the pre-cleaner, while the cryo head warms to release the Xe gas to one of two locations - either a second cryo station for in-situ gamma counting, or to a small cooled gas bottle for removal and counting. Additional capabilities of the RAGS system include a noble gas calibration apparatus attached to the NIF target chamber, which will be operated hours pre-shot to determine collection efficiency through the whole RAGS system via the signal detected from the RGA. Also it is possible there will be the addition of a helium puff system to drive the Xe through the pre-cleaner and collection stations. It is also likely that multiple cryo collection stations will be built into the system in the future to fractionate and collect other noble gases such as Kr, Ar, and possibly Ne. A prototype pre-cleaner has been built at Lawrence Berkeley National Laboratory (LBNL) and is in the testing phases. The information learned in this testing will help collaborators at Sandia National Laboratory that are building and delivering the systems that will be deployed at NIF. The LBNL testing so far has demonstrated that radioactive fission gases can be flowed through the system with and without carrier gases of air and/or He, and the activity can be collected on an activated charcoal sample. Further testing in the upcoming months will hopefully yield more information about any presence of Xe in the water removed from the system, and commissioning of a small cryo cooler as well.

Nelson, S L; Shaughnessy, D A; Schneider, D H; Stoeffl, W; Moody, K J; Cerjan, C; Stoyer, M A; Bernstein, L A; Bleuel, D L; Hoffman, R

2010-05-21T23:59:59.000Z

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


161

Environmental application of stable xenon and radioxenon monitoring  

E-Print Network (OSTI)

1969) Atlantic Richfield Hanford Company, Richland WA. [8]Batches Processed through Hanford Separations Plants, 1944Locations Ref iso = Xe Ave. Hanford Fuel Xe) 216-Z-1A Pu

2008-01-01T23:59:59.000Z

162

Microfluidic gas flow profiling using remote detection NMR  

E-Print Network (OSTI)

using remote detection NMR Christian Hilty* , Eringas mixture containing 0.3% NMR active 129 Xe (1% Xe atNuclear Magnetic Resonance (NMR) to obtain spatially and

Hilty, Christian; McDonnell, Erin; Granwehr, Josef; Pierce, Kimberly; Han, Song-I Han; Pines, Alexander

2005-01-01T23:59:59.000Z

163

MUTUAL CHARGE NEUTRALIZATION OF GASEOUS IONS (thesis)  

DOE Green Energy (OSTI)

The problem of the bimolecular rate constant, alpha , for the mutual charge neutralization reaction (ion-ion recombination) for ions formed by the vacuum ultraviolet photolysis of nitric oxide is considered. The pressure dependence of alpha over a pressure range of 10 to 600 torr for mixtures of a few hundred microns of NO with He, Ar, Kr, Xe, H/sub 2/, D/sub 2/, and N/sub 2/ was measured. From the low-pressure limit of alpha , the rate constant for charge neutralization in the absence of a third body was found to be k/sub o/ = 2.1 plus or minus 0.4 x 10/sup -7/ cm/sup 3// sec. The high-pressure limit of alpha was estimated to be 2.0 plus or minus 0.5 x 10/sup -6/ cm/sup 3//sec. The third-body efficiencies for promoting the charge-neutralization reaction were measured. The results, relative to He as the third-body gas, are H/sub 2/= 1.4 plus or minus 0.4, D/sub 2/= 1.5 plus or minus 0.4, Ar =3.6 plus or minus 0.8, Kr =4.3 plus or min11.0, N/sub 2/ = 5.2 plus or minus 1.1, and Xe = 6.8 plus or minus 1.5. The average ionic mobility in the gas mixtures is estimated, and the mobilities indicate that at least some of the ions must be present as ion clusters. It is shown that the addition of NO/sub 2/ or H/sub 2/O further lowers the mobility. A detailed calculation of the three-body charge-neutralization process was made using a computer. This calculation considers that the rate of charge neutralization is the rate at which ion pairs are deactivated by collision with the neutral gas molecules to form ion pairs that cannot separate to large distances. The potential between the ions and the neutrals is assumed to be an ion-induced dipole potential with a hard-sphere core. The calculation involves an average over the various angles in the collisions. The predicted values of alpha depend on a parameter of the calculation, but over a wide range of this parameter the predicted relative third-body efficiencies are in reasonable agreement with the experimental values. (auth)

Person, J C

1963-07-11T23:59:59.000Z

164

Actinide Production in the Reaction of Heavy Ions withCurium-248  

Science Conference Proceedings (OSTI)

Chemical experiments were performed to examine the usefulness of heavy ion transfer reactions in producing new, neutron-rich actinide nuclides. A general quasi-elastic to deep-inelastic mechanism is proposed, and the utility of this method as opposed to other methods (e.g. complete fusion) is discussed. The relative merits of various techniques of actinide target synthesis are discussed. A description is given of a target system designed to remove the large amounts of heat generated by the passage of a heavy ion beam through matter, thereby maximizing the beam intensity which can be safely used in an experiment. Also described is a general separation scheme for the actinide elements from protactinium (Z = 91) to mendelevium (Z = 101), and fast specific procedures for plutonium, americium and berkelium. The cross sections for the production of several nuclides from the bombardment of {sup 248}Cm with {sup 18}O, {sup 86}Kr and {sup 136}Xe projectiles at several energies near and below the Coulomb barrier were determined. The results are compared with yields from {sup 48}Ca and {sup 238}U bombardments of {sup 248}Cm. Simple extrapolation of the product yields into unknown regions of charge and mass indicates that the use of heavy ion transfer reactions to produce new, neutron-rich above-target species is limited. The substantial production of neutron-rich below-target species, however, indicates that with very heavy ions like {sup 136}Xe and {sup 238}U the new species {sup 248}Am, {sup 249}Am and {sup 247}Pu should be produced with large cross sections from a {sup 248}Cm target. A preliminary, unsuccessful attempt to isolate {sup 247}Pu is outlined. The failure is probably due to the half life of the decay, which is calculated to be less than 3 minutes. The absolute gamma ray intensities from {sup 251}Bk decay, necessary for calculating the {sup 251}Bk cross section, are also determined.

Moody, K.J.

1983-07-01T23:59:59.000Z

165

Browse by Discipline -- E-print Network Subject Pathways: Environmenta...  

Office of Scientific and Technical Information (OSTI)

Kammen, Daniel M. (Daniel M. Kammen) - Renewable and Appropriate Energy Laboratory, University of California at Berkeley Kr, Sren Knudsen (Sren Knudsen Kr) - Department of...

166

It's Elemental - The Periodic Table of Elements - Elements Listed by Atomic  

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

Atomic Number Atomic Number 1 Hydrogen H 2 Helium He 3 Lithium Li 4 Beryllium Be 5 Boron B 6 Carbon C 7 Nitrogen N 8 Oxygen O 9 Fluorine F 10 Neon Ne 11 Sodium Na 12 Magnesium Mg 13 Aluminum Al 14 Silicon Si 15 Phosphorus P 16 Sulfur S 17 Chlorine Cl 18 Argon Ar 19 Potassium K 20 Calcium Ca 21 Scandium Sc 22 Titanium Ti 23 Vanadium V 24 Chromium Cr 25 Manganese Mn 26 Iron Fe 27 Cobalt Co 28 Nickel Ni 29 Copper Cu 30 Zinc Zn 31 Gallium Ga 32 Germanium Ge 33 Arsenic As 34 Selenium Se 35 Bromine Br 36 Krypton Kr 37 Rubidium Rb 38 Strontium Sr 39 Yttrium Y 40 Zirconium Zr 41 Niobium Nb 42 Molybdenum Mo 43 Technetium Tc 44 Ruthenium Ru 45 Rhodium Rh 46 Palladium Pd 47 Silver Ag 48 Cadmium Cd 49 Indium In 50 Tin Sn 51 Antimony Sb 52 Tellurium Te 53 Iodine I 54 Xenon Xe 55 Cesium Cs 56 Barium Ba 57 Lanthanum La 58 Cerium Ce

167

AtomicNuclear Properties  

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

HTML_PAGES HTML_PAGES This AtomicNuclearProperties page is under intermittent development. Suggestions and comments are welcome. Please report errors. Chemical elements: For entries in red, a pull-down menu permits selection of the physical state. Cryogenic liquid densties are at the boiling point at 1 atm. 0n 1Ps 1H 2He 3Li 4Be 5B 6C 7N 8O 9F 10Ne 11Na 12Mg 13Al 14Si 15P 16S 17Cl 18Ar 19K 20Ca 21Sc 22Ti 23V 24Cr 25Mn 26Fe 27Co 28Ni 29Cu 30Zn 31Ga 32Ge 33As 34Se 35Br 36Kr 37Rb 38Sr 39Y 40Zr 41Nb 42Mo 43Tc 44Ru 45Rh 46Pd 47Ag 48Cd 49In 50Sn 51Sb 52Te 53I 54Xe 55Cs 56Ba 57La 72Hf 73Ta 74W 75Re 76Os 77Ir 78Pt 79Au 80Hg 81Tl 82Pb 83Bi 84Po 85At 86Rn 87Fr 88Ra 89Ac 104Rf 105Db 106Sg 107Bh 108Hs 109Mt 110Ds 111Rg 112 113 114 115 116 mt 118

168

BNL NASA Space Radiation Laboratory  

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

Ion Species and Energies Used Previously at NSRL Ion Species and Energies Used Previously at NSRL Ion Species [1] Energy [2] (MeV/nucleon) Maximum Intensity [3] (ions per spill) LET [4] (keV/m) H-1 50 - 2500 6.4 x 1011 1.26 - 0.21 He-4 50 - 1000 0.88 x 1010 5.01 - 0.89 C-12 65 - 1000 1.2 x 1010 36.79 - 8.01 O-16 50 - 1000 0.4 x 1010 80.50 - 14.24 Ne-20 70 - 1000 0.10 x 1010 96.42 - 22.25 Si-28 93 - 1000 0.3 x 1010 151 - 44 Cl-35 500 - 1000 0.2 x 1010 80 - 64 Ar-40 350 0.02 x 1010 105.8 Ti-48 150 - 1000 0.08 x 1010 265 - 108 Fe-56 50 - 1000 0.2 x 1010 832 - 150 Kr-84 383 403 Xe-131 228 1204 Ta-181 292 - 313 1827 - 1896 Au-197 76 - 165 1 x 107 4828 - 3066 Sequential Field (Fe/H) 1000 Various 150/0.2 Solar Particle Event [5] 30 - 180 Various 1.26 - 0.21 [1] Different isotopes of some ions are also available. With the

169

Atomic processes in plasmas under ultra-intense laser irradiation  

Science Conference Proceedings (OSTI)

Lasers delivering subpicosecond pulses with energies of a fraction of a Joule have made it possible to generate irradiance levels approaching 10{sup 20} W/cm{sup 2}. We presently operate two such systems, a KrF based excimer laser capable of producing a few 10{sup 17} W/cm{sup 2} at 248 nm with a repetition rate of 3--5 Hz and a XeCl based excimer laser capable of producing mid 10{sup 19} W/cm{sup 2} at 308 nm and 1 Hz. We will discuss some experimental results and the theory and modeling of the interaction of such intense laser pulses with aluminum. Because of a small ASE prepulse the high intensity interaction is not at the solid surface but rather at the n{sub e} = 2 {times} 10{sup 22} cm{sup {minus}3} critical density of the blowoff plasma generated by the ASE. The transient behavior of the plasma following the energy deposition by the intense subpicosecond pulse can be viewed as the energy-impulse response of the plasma. Experimental results and modeling of the x-ray emission from this plasma will be presented. 15 refs., 8 figs.

Schappert, G.T.; Casperson, D.E.; Cobble, J.A.; Comly, J.C.; Jones, L.A.; Kyrala, G.A.; LaGattuta, K.J.; Lee, P.H.Y.; Olson, G.L.; Taylor, A.J.

1989-11-01T23:59:59.000Z

170

Analytical Chemistry Laboratory (ACL) procedure compendium. Volume 3, Inorganic instrumental methods  

Science Conference Proceedings (OSTI)

The methods cover: C in solutions, F (electrode), elements by atomic emission spectrometry, inorganic anions by ion chromatography, Hg in water/solids/sludges, As, Se, Bi, Pb, data calculations for SST (single shell tank?) samples, Sb, Tl, Ag, Pu, O/M ratio, ignition weight loss, pH value, ammonia (N), Cr(VI), alkalinity, U, C sepn. from soil/sediment/sludge, Pu purif., total N, water, C and S, surface Cl/F, leachable Cl/F, outgassing of Ge detector dewars, gas mixing, gas isotopic analysis, XRF of metals/alloys/compounds, H in Zircaloy, H/O in metals, inpurity extraction, reduced/total Fe in glass, free acid in U/Pu solns, density of solns, Kr/Xe isotopes in FFTF cover gas, H by combustion, MS of Li and Cs isotopes, MS of lanthanide isotopes, GC operation, total Na on filters, XRF spectroscopy QC, multichannel analyzer operation, total cyanide in water/solid/sludge, free cyanide in water/leachate, hydrazine conc., ICP-MS, {sup 99}Tc, U conc./isotopes, microprobe analysis of solids, gas analysis, total cyanide, H/N{sub 2}O in air, and pH in soil.

Not Available

1993-08-01T23:59:59.000Z

171

Treatment of high-level wastes from the IFR fuel cycle  

SciTech Connect

The Integral Fast Reactor (IFR) is being developed as a future commercial power source that promises to have important advantages over present reactors, including improved resource conservation and waste management. The spent metal alloy fuels from an IFR will be processed in an electrochemical cell operating at 500{degree}C with a molten chloride salt electrolyte and cadmium metal anode. After the actinides have been recovered from several batches of core and blanket fuels, the salt cadmium in this electrorefiner will be treated to separate fission products from residual transuranic elements. This treatment produces a waste salt that contains the alkali metal, alkaline earth, and halide fission products; some of the rare earths; and less than 100 nCi/g of alpha activity. The treated metal wastes contain the rest of the fission products (except T, Kr, and Xe) small amounts of uranium, and only trace amounts of transuranic elements. The current concept for the salt waste form is an aluminosilicate matrix, and the concept for the metal waste form is a corrosion-resistant metal alloy. The processes and equipment being developed to treat and immobilize the salt and metal wastes are described.

Johnson, T.R.; Lewis, M.A.; Newman, A.E.; Laidler, J.J.

1992-01-01T23:59:59.000Z

172

Treatment of high-level wastes from the IFR fuel cycle  

Science Conference Proceedings (OSTI)

The Integral Fast Reactor (IFR) is being developed as a future commercial power source that promises to have important advantages over present reactors, including improved resource conservation and waste management. The spent metal alloy fuels from an IFR will be processed in an electrochemical cell operating at 500{degree}C with a molten chloride salt electrolyte and cadmium metal anode. After the actinides have been recovered from several batches of core and blanket fuels, the salt cadmium in this electrorefiner will be treated to separate fission products from residual transuranic elements. This treatment produces a waste salt that contains the alkali metal, alkaline earth, and halide fission products; some of the rare earths; and less than 100 nCi/g of alpha activity. The treated metal wastes contain the rest of the fission products (except T, Kr, and Xe) small amounts of uranium, and only trace amounts of transuranic elements. The current concept for the salt waste form is an aluminosilicate matrix, and the concept for the metal waste form is a corrosion-resistant metal alloy. The processes and equipment being developed to treat and immobilize the salt and metal wastes are described.

Johnson, T.R.; Lewis, M.A.; Newman, A.E.; Laidler, J.J.

1992-08-01T23:59:59.000Z

173

The Fuel Accident Condition Simulator (FACS) furnace system for high temperature performance testing of VHTR fuel  

SciTech Connect

The AGR-1 irradiation of TRISO-coated particle fuel specimens was recently completed and represents the most successful such irradiation in US history, reaching peak burnups of greater than 19% FIMA with zero failures out of 300,000 particles. An extensive post-irradiation examination (PIE) campaign will be conducted on the AGR-1 fuel in order to characterize the irradiated fuel properties, assess the in-pile fuel performance in terms of coating integrity and fission metals release, and determine the fission product retention behavior during high temperature safety testing. A new furnace system has been designed, built, and tested to perform high temperature accident tests. The Fuel Accident Condition Simulator furnace system is designed to heat fuel specimens at temperatures up to 2000 degrees C in helium while monitoring the release of volatile fission metals (e.g. Cs, Ag, Sr, and Eu), iodine, and fission gases (Kr, Xe). Fission gases released from the fuel to the sweep gas are monitored in real time using dual cryogenic traps fitted with high purity germanium detectors. Condensable fission products are collected on a plate attached to a water-cooled cold finger that can be exchanged periodically without interrupting the test. Analysis of fission products on the condensation plates involves dry gamma counting followed by chemical analysis of selected isotopes. This paper will describe design and operational details of the Fuel Accident Condition Simulator furnace system and the associated fission gas monitoring system, as well as preliminary system calibration results.

Paul A. Demkowicz; David V. Laug; Dawn M. Scates; Edward L. Reber; Lyle G. Roybal; John B. Walter; Jason M. Harp; Robert N. Morris

2012-10-01T23:59:59.000Z

174

Improved Ion Resistance for III-V Photocathodes in High Current Guns  

SciTech Connect

The two photocathode test systems were modified, baked and recommissioned. The first system was dedicated to ion studies and the second to electron stimulated recovery (ESR) work. The demonstration system for the electron beam rejuvenation was set up, tested and demonstrated to one of the SSRL team (Dr. Kirby) during a site visit. The requisite subsystems were transferred to SSRL, installed and photoemission studies conducted on activated surfaces following electron beam exposure. Little surface chemistry change was detected in the photoemission spectra following the ESR process. The yield mapping system for the ion (and later, the electron beam rejuvenation) studies was implemented and use made routine. Ion species and flux measurements were performed for H, He, Ne, Ar, Kr and Xe ions at energies of 0.5, 1.0 and 2.0 kV. Gas induced photoyield measurements followed each ion exposure measurement. These data permit the extraction of photoyield induced change per ion (by species) at the measured energies. Electron beam induced rejuvenation was first demonstrated in the second chamber with primary electron beam energy and dependency investigations following. A Hiden quadrupole mass spectrometer for the electron stimulated desorption (ESD) measurements was procured. The UHV test systems needed for subsequent measurements were configured, baked, commissioned and utilized for their intended purposes. Measurements characterizing the desorption products from the ESD process and secondary electron (SE) yield at the surfaces of negative electron affinity GaAs photocathodes have been performed. One US Utility Patent was granted covering the ESR process.

Mulhollan, Gregory, A.

2012-11-16T23:59:59.000Z

175

Highly ionized atoms in tokamak discharges  

DOE Green Energy (OSTI)

Tokamak discharges are characterized by electron densities usually approximately 0.3 to 1.0 x 10/sup 14/ cm/sup -3/ and temperatures from a few hundred eV to several keV. In addition to the working gas (H or He), the plasma normally contains some light impurities (approximately 10/sup 12/ cm/sup -3/ O or C) that are completely stripped except at the outer periphery, and heavier elements from the vacuum wall and current-aperture limiter (Fe, Cr, Ni, W, Mo and others, approximately 10/sup 10/-10/sup 11/ cm/sup -3/) that remain partly stripped, hence relatively strongly radiating, throughout the discharge. Other elements, especially noble gases, may be deliberately added for diagnostic purposes. Resonance lines of Fe and Ar in the beryllium and lithium sequences, of Fe, Kr, and Mo in the magnesium and sodium sequences, and of Mo and Xe in the zinc and copper sequences have been used for rough determination of plasma composition. Since crucial plasma characteristics such as temperature and confinement time are sensitively affected by the local composition, it is essential to improve the available atomic data necessary for more accurate analysis: wavelengths, transition probabilities, excitation, ionization and recombination rates, especially for the heavier elements.

Hinnov, E.

1976-05-01T23:59:59.000Z

176

Selection of Isotopes and Elements for Fuel Cycle Analysis  

Science Conference Proceedings (OSTI)

Fuel cycle system analysis simulations examine how the selection among fuel cycle options for reactors, fuel, separation, and waste management impact uranium ore utilization, waste masses and volumes, radiotoxicity, heat to geologic repositories, isotope-dependent proliferation resistance measures, and so forth. Previously, such simulations have tended to track only a few actinide and fission product isotopes, those that have been identified as important to a few criteria from the standpoint of recycled material or waste, taken as a whole. After accounting for such isotopes, the residual mass is often characterized as fission product other or actinide other. However, detailed assessment of separation and waste management options now require identification of key isotopes and residual mass for Group 1A/2A elements (Rb, Cs, Sr, Ba), inert gases (Kr, Xe), halogens (Br, I), lanthanides, transition metals, transuranic (TRU), uranium, actinide decay products. The paper explains the rationale for a list of 81 isotopes and chemical elements to better support separation and waste management assessment in dynamic system analysis models such as Verifiable Fuel Cycle Simulation (VISION)

Steven J. Piet

2009-04-01T23:59:59.000Z

177

Design of an Online Fission Gas Monitoring System for Post-irradiation Examination Heating Tests of Coated Fuel Particles for High-Temperature Gas-Cooled Reactors  

Science Conference Proceedings (OSTI)

A new Fission Gas Monitoring System (FGMS) has been designed at the Idaho National Laboratory (INL) for use of monitoring online fission gas-released during fuel heating tests. The FGMS will be used with the Fuel Accident Condition Simulator (FACS) at the Hot Fuels Examination Facility (HFEF) located at the Materials and Fuels Complex (MFC) within the INL campus. Preselected Advanced Gas Reactor (AGR) TRISO (Tri-isotropic) fuel compacts will undergo testing to assess the fission product retention characteristics under high temperature accident conditions. The FACS furnace will heat the fuel to temperatures up to 2,000C in a helium atmosphere. Released fission products such as Kr and Xe isotopes will be transported downstream to the FGMS where they will accumulate in cryogenically cooledcollection traps and monitored with High Purity Germanium (HPGe) detectors during the heating process. Special INL developed software will be used to monitor the accumulated fission products and will report data in near real-time. These data will then be reported in a form that can be readily available to the INL reporting database. This paper describes the details of the FGMS design, the control and acqusition software, system calibration, and the expected performance of the FGMS. Preliminary online data may be available for presentation at the High Temperature Reactor (HTR) conference.

Dawn Scates

2010-10-01T23:59:59.000Z

178

224 -2011 11 THESE EN CO-  

E-Print Network (OSTI)

) Doctor Johannes Krämer (Phast, Germany) Equipe de Recherche Technologique « Conception, Ingenerie et

179

Improved Coupled Z?R and k?R Relations and the Resulting Ambiguities in the Determination of the Vertical Distribution of Rain from the Radar Backscatter and the Integrated Attenuation  

Science Conference Proceedings (OSTI)

Several algorithms to calculate a rain-rate profile from a single-frequency air- or spaceborne radar backscatter profile and a given path-integrated attenuation have been proposed. The accuracy of any such algorithm is limited by the ambiguities ...

Z. S. Haddad; A. R. Jameson; E. Im; S. L. Durden

1995-12-01T23:59:59.000Z

180

THE MECHANICS OF LUNG TISSUE UNDER HIGH-FREQUENCY VENTILATION  

E-Print Network (OSTI)

Pi(5.11) Ur = Wr(5.12) Ui = Wi(5.13) Wr = CrKi + CiKr |C|2|K|2 - Cr |C|2 Vr + CrKr - CiKi |C|2|K|2 + Ci |C|2 Vi(5.14) + CiKi - CrKr |C|2|K|2 + Ci |C|2 + Ci |C|2 Ur - CrKi + CiKr |C|2|K|2 + Cr |C|2 + Cr |C|2 Ui Wi = CrKr - CiKi |C|2|K|2 + Ci |C|2 Vr + CrKi + CiKr |C|2|K|2 - Cr |C|2 Vi(5.15) - Cr

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181

Physik IV: Integrierter Kurs Dozenten: Prof. Dr. Georg Maret  

E-Print Network (OSTI)

.922 Thulium (Tm) [Xe]4f13 6s2 0.880 0,04 Mendelevium (Md) [Rn]5f13 7s2 0.912 Ytterbium (Yb) [Xe]4f14 6s2 0

182

Quantum Mechanics Lecture Notes for  

E-Print Network (OSTI)

.922 Thulium (Tm) [Xe]4f13 6s2 0.880 0,04 Mendelevium (Md) [Rn]5f13 7s2 0.912 Ytterbium (Yb) [Xe]4f14 6s2 0

Bittner, Eric R.

183

Bulk and surface controlled diffusion of fission gas atoms  

Science Conference Proceedings (OSTI)

Fission gas retention and release impact nuclear fuel performance by, e.g., causing fuel swelling leading to mechanical interaction with the clad, increasing the plenum pressure and reducing the gap thermal conductivity. All of these processes are important to understand in order to optimize operating conditions of nuclear reactors and to simulate accident scenarios. Most fission gases have low solubility in the fuel matrix, which is especially pronounced for large fission gas atoms such as Xe and Kr, and as a result there is a significant driving force for segregation of gas atoms to extended defects such as grain boundaries or dislocations and subsequently for nucleation of gas bubbles at these sinks. Several empirical or semi-empirical models have been developed for fission gas release in nuclear fuels, e.g. [1-6]. One of the most commonly used models in fuel performance codes was published by Massih and Forsberg [3,4,6]. This model is similar to the early Booth model [1] in that it applies an equivalent sphere to separate bulk UO{sub 2} from grain boundaries represented by the sphere circumference. Compared to the Booth model, it also captures trapping at grain boundaries, fission gas resolution and it describes release from the boundary by applying timedependent boundary conditions to the circumference. In this work we focus on the step where fission gas atoms diffuse from the grain interior to the grain boundaries. The original Massih-Forsberg model describes this process by applying an effective diffusivity divided into three temperature regimes. In this report we present results from density functional theory calculations (DFT) that are relevant for the high (D{sub 3}) and intermediate (D{sub 2}) temperature diffusivities of fission gases. The results are validated by making a quantitative comparison to Turnbull's [8-10] and Matzke's data [12]. For the intrinsic or high temperature regime we report activation energies for both Xe and Kr diffusion in UO{sub 2{+-}x}, which compare favorably to available experiments. This is an extension of previous work [13]. In particular, it applies improved chemistry models for the UO{sub 2{+-}x} nonstoichiometry and its impact on the fission gas activation energies. The derivation of these models follows the approach that used in our recent study of uranium vacancy diffusion in UO{sub 2} [14]. Also, based on the calculated DFT data we analyze vacancy enhanced diffusion mechanisms in the intermediate temperature regime. In addition to vacancy enhanced diffusion we investigate species transport on the (111) UO{sub 2} surface. This is motivated by the formation of small voids partially filled with fission gas atoms (bubbles) in UO{sub 2} under irradiation, for which surface diffusion could be the rate-limiting transport step. Diffusion of such bubbles constitutes an alternative mechanism for mass transport in these materials.

Andersson, Anders D. [Los Alamos National Laboratory

2012-08-09T23:59:59.000Z

184

Microstructural Analysis of Irradiated U-Mo Fuel Plates: Recent Results  

Science Conference Proceedings (OSTI)

Microstructural characterization of irradiated dispersion and monolithic RERTR fuel plates using scanning electron microscopy (SEM) is being performed in the Electron Microscopy Laboratory at the Idaho National Laboratory. The SEM analysis of samples from U-Mo dispersion fuel plates focuses primarily on the behavior of the Si that has been added to the Al matrix to improve the irradiation performance of the fuel plate and on the overall behavior of fission gases (e.g., Xe and Kr) that develop as bubbles in the fuel microstructure. For monolithic fuel plates, microstructural features of interest, include those found in the U-Mo foil and at the U-Mo/Zr and Zr/6061 Al cladding interfaces. For both dispersion and monolithic fuel plates, samples have been produced using an SEM equipped with a Focused Ion Beam (FIB). These samples are of very high quality and can be used to uncover some very unique microstructural features that are typically not observed when characterizing samples produced using more conventional techniques. Overall, for the dispersion fuel plates with matrices that contained Si, narrower fuel/matrix interaction layers are typically observed compared to the fuel plates with pure Al matrix, and for the monolithic fuel plates microstructural features have been observed in the U-10Mo foil that are similar to what have been observed in the fuel particles found in U-Mo dispersion fuels. Most recently, more prototypic monolithic fuel samples have been characterized and this paper describes the microstructures that have been observed in these samples.

D. D. Keiser, Jr.; J. Jue; B. D. Miller; J. Gan; A. B. Robinson; P. V. Medvedev

2012-03-01T23:59:59.000Z

185

A class of ejecta transport test problems  

Science Conference Proceedings (OSTI)

Hydro code implementations of ejecta dynamics at shocked interfaces presume a source distribution function ofparticulate masses and velocities, f{sub 0}(m, v;t). Some of the properties of this source distribution function have been determined from extensive Taylor and supported wave experiments on shock loaded Sn interfaces of varying surface and subsurface morphology. Such experiments measure the mass moment of f{sub o} under vacuum conditions assuming weak particle-particle interaction and, usually, fully inelastic capture by piezo-electric diagnostic probes. Recently, planar Sn experiments in He, Ar, and Kr gas atmospheres have been carried out to provide transport data both for machined surfaces and for coated surfaces. A hydro code model of ejecta transport usually specifies a criterion for the instantaneous temporal appearance of ejecta with source distribution f{sub 0}(m, v;t{sub 0}). Under the further assumption of separability, f{sub 0}(m,v;t{sub 0}) = f{sub 1}(m)f{sub 2}(v), the motion of particles under the influence of gas dynamic forces is calculated. For the situation of non-interacting particulates, interacting with a gas via drag forces, with the assumption of separability and simplified approximations to the Reynolds number dependence of the drag coefficient, the dynamical equation for the time evolution of the distribution function, f(r,v,m;t), can be resolved as a one-dimensional integral which can be compared to a direct hydro simulation as a test problem. Such solutions can also be used for preliminary analysis of experimental data. We report solutions for several shape dependent drag coefficients and analyze the results of recent planar dsh experiments in Ar and Xe.

Hammerberg, James E [Los Alamos National Laboratory; Buttler, William T [Los Alamos National Laboratory; Oro, David M [Los Alamos National Laboratory; Rousculp, Christopher L [Los Alamos National Laboratory; Morris, Christopher [Los Alamos National Laboratory; Mariam, Fesseha G [Los Alamos National Laboratory

2011-01-31T23:59:59.000Z

186

Dissolver Off-gas Hot Operations Authorization (AFCI CETE Milestone Report)  

SciTech Connect

The head-end processing of the Coupled-End-to-End (CETE) Demonstration includes fuel receipt, fuel disassembly, exposure of fuel (e.g., by segmenting the fuel pins), voloxidation of the fuel to separate tritium, and fuel dissolution. All of these processing steps with the exception of the dissolution step will be accomplished in the Irradiated Fuels Examination Laboratory (IFEL) (Building 3525). The final headend step will be performed in the Radiochemical Engineering Development Center (Building 7920). The primary purpose of the fuel dissolution step is to prepare the solid fuel for subsequent liquid separations steps. This is accomplished by dissolving the fuel solids using nitric acid. During the dissolution process gases are evolved. Oxides of nitrogen are the primary off-gas components generated by the reactions of nitric acid and the fuel oxides however, during the dissolution and sparging of the resulting solution, iodine, C-14 as carbon dioxide, xenon, and krypton gasses are also released to the off-gas stream. The Dissolver Off-gas treatment rack provides a means of trapping these volatile fission products and other gases via various trapping media. Specifically the rack will recover iodine on a solid sorbent bed, scrub NOx in a water/acid column, scrub CO{sub 2} in a caustic scrubber column, remove moisture with solid sorbent drier beds and recover Xe and Kr using solid absorbent beds. The primary purpose of this experimental rack and the off-gas rack associated with the voloxidation equipment located at IFEL is to close the material balances around the volatile gases and to provide an understanding of the impacts of specific processing conditions on the fractions of the volatile components released from the various head-end processing steps.

Jubin, Robert Thomas [ORNL

2009-06-01T23:59:59.000Z

187

International Reserves Management and Capital Mobility in a Volatile World: Policy Considerations and a Case Study of Korea  

E-Print Network (OSTI)

process, the Bank of Korea incurs the high quasi-fiscal costSupervisory Service of Korea, http://www.fss.or.kr. SEDdata are from Bank of Korea, http://www.bok.or.kr, unless

Aizenman, Joshua; Lee, Yeonho; Rhee, Yeongseop

2004-01-01T23:59:59.000Z

188

International reserves management and capital mobility in a volatile world: Policy considerations and a case study of Korea  

E-Print Network (OSTI)

process, the Bank of Korea incurs the high quasi-fiscal costSupervisory Service of Korea, http://www.fss.or.kr. SEDdata are from Bank of Korea, http://www.bok.or.kr, unless

Aizenman, Joshua; Lee, Yeonho; Rhee, Yeongseop

2004-01-01T23:59:59.000Z

189

Plant Communities, Soil Carbon, and Soil Nitrogen Properties in a ...  

Science Conference Proceedings (OSTI)

Brye KR, Kucharik CJ (2003) Carbon and nitrogen sequestration in two prairie topochronosequences on contrasting soils in Southern. Wisconsin. American...

190

APPLIED AND ENVIRONMENTAL MICROBIOLOGY, Aug. 2007, p. 53475353 Vol. 73, No. 16 0099-2240/07/$08.00 0 doi:10.1128/AEM.00804-07  

E-Print Network (OSTI)

.J.W. Gleadow, Bundoora, Vic. K.R. Ludwig, Berkeley, Calif. I. Wendt, Potsdam R. Gonfiantini, Vienna I. Mc

Lovley, Derek

191

Photon burst mass spectrometry--ultrasensitive detection of rare isotopes  

SciTech Connect

Progress is reported on the development of a new technique for measurement of trace levels of radioisotopes which is based on fluorescence detection of output from a mass spectrometer. Significant achievements include the observation of fluorescence and burst signals from Kr isotopes, including enriched samples of {sup 85}Kr with a 4-collector system. An abundance sensitivity is demonstrated with {sup 83}Kr and {sup 85}Kr.

Hansen, C.S.; Pan, X.J.; Fairbank, W.M. Jr. [Colorado State Univ., Fort Collins, CO (United States). Physics Dept.; Oona, H.; Chamberlin, E.P.; Nogar, N.S.; Fearey, B.L. [Los Alamos National Lab., NM (United States)

1995-02-01T23:59:59.000Z

192

High Power Lasers... Another approach to  

E-Print Network (OSTI)

Research Laboratory Washington, DC #12;2 Main points of the talk Fusion Energy based on lasers and direct employees, (900 PhDs + 400 MSc) · $800 M /year budget ·Field sites: · Washington DC (Main site) · Stennis (Hibachi) Amplifier Window Electron Beam Cathode Pulsed Power System Energy + ( Kr+ F2) ( KrF)* + F Kr

193

Low-cost distributed solar-thermal-electric power generation  

E-Print Network (OSTI)

Symmetry Ulrich Kr¨ahmer University of Glasgow RI Masterclass Stirling 2013 Ulrich Kr¨ahmer (University of Glasgow) Symmetry RI Masterclass Stirling 2013 1 / 23 #12;Problem 1: geometry Given two points Kr¨ahmer (University of Glasgow) Symmetry RI Masterclass Stirling 2013 2 / 23 #12;Problem 2: algebra

Sanders, Seth

194

ACEEE Int. J. on Communication, Vol. 02, No. 03, Nov2011 DOI:01.IJCOM.02.03.524  

E-Print Network (OSTI)

's classification of the cone C(R) of orderings of a formally r* *eal field is effectively tight, that is: For any s we have an approximation As to A and approximations xe,i,s, ye,i,sand ze,i,sto some of the numbers xe,i,sis undefined, set xe,i,s= s. e.i.2) If xe,i,sand 'e,s(xe,i,s) are defined but ye,i,sis not, choose a valu

195

Krypton-85 in the atmosphere  

E-Print Network (OSTI)

Measurement results are presented on 85Kr content in the atmosphere over the European part of Russia in 1971-1995 based on the analysis of the commercial krypton, which is separated from air by industrial plants. Our results are by 15 per cent lower then 85Kr activites observed over West Europe. According our prediction by 2030 85Kr content in the atmosphere over Europe will amount to 1,5-3 Bq in m3 air. Average 85Kr release to the atmosphere from regeneration of spent nuclear fuel (SNF) is estimated, some 180 TBq per a ton SNF. It is advisable to recommence monitoring of 85Kr content within Russia.

A. T. Korsakov; E. G. Tertyshnik

2013-07-09T23:59:59.000Z

196

Krypton-85 in the atmosphere  

E-Print Network (OSTI)

Measurement results are presented on 85Kr content in the atmosphere over the European part of Russia in 1971-1995 based on the analysis of the commercial krypton, which is separated from air by industrial plants. Our results are by 15 per cent lower then 85Kr activites observed over West Europe. According our prediction by 2030 85Kr content in the atmosphere over Europe will amount to 1,5-3 Bq in m3 air. Average 85Kr release to the atmosphere from regeneration of spent nuclear fuel (SNF) is estimated, some 180 TBq per a ton SNF. It is advisable to recommence monitoring of 85Kr content within Russia.

Korsakov, A T

2013-01-01T23:59:59.000Z

197

technical report and journal articles  

Science Conference Proceedings (OSTI)

Objective: This project seeks to improve the application of noble gas isotope studies to multiphase fluid processes in the Earth's crust by (1) identifying the important noble gas carrier phases in sediments to address the processes that have led to the observed enrichment and depletion patterns in sedimentary rocks and fluids, (2) examine the mechanisms by which such noble gas patterns are acquired, trapped and subsequently released to mobile crustal fluids, and (3) evaluate the time and length scales for the transport of noble gas components, such as radiogenic 4He, through the continental crust.. Project Description: Sedimentary rocks and oil field gases typically are enriched in heavy noble gases: Xe/Ar ratios of ~10-10,000 times the ratio in air have been observed that cannot be explained by adsorption hypotheses. Laboratory experiments designed to isolate sedimentary phases for noble gas analysis are conducted to identify the carrier phase(s). It has been observed that radiogenic 4He accumulates in confined aquifer waters at rates that exceed the rate of local production and approaching the whole crustal production rate. A literature evaluation of 4He, 3He crustal fluxes is being conducted to evaluate crustal scale mass transport in terms of the rate, mechanisms, temporal and spatial variability and the role played by tectonic processes. Results: The laboratory study has concentrated on noble gas abundances in a variety of sedimentary silica samples. We have found that, in general, samples of inorganic silica have noble gas abundances that are consistent with occlusion of air-saturated water in fluid inclusions and lack requisite enrichment/depletion factors needed to explain the noble gas inventory in oil field fluids. However, numerous replicate analyses of noble gases extracted from silica spicules from live sponges (Calyxnicaeensis) show significantly enriched Ar, Kr, and Xe concentrations ([iNg]sample/[iNg]asw > 1), but with very little if any mass dependence in the acquisition and trapping of Ar, Kr and Xe. Noble gases in silica samples from the (diatomaceous) Monterey Formation (Elk Hills oil field, CA) and an Atlantic box core were found to be somewhat depleted with respect to the sponge spicule, fractionated in a fashion favoring the heavy noble gases, and approach the compositions that have been observed in bulk deep sea sediments. We suspect that the differences in noble gas absolute and relative abundances between the sponge spicule samples and the more evolved diatomaceous samples are related to either (1) fundamental differences in the biologically controlled mineralization or (2) postdepositional effects related to the progressive crystallization of amorphous silica (e.g. opal-A) to more ordered structures. Laboratory cultured diatoms and box core sea sediment samples collected as a function of depth within the sediment column have been processed for analysis of the silica phases to address these questions. Through a statistical evaluation using a global data base covering many geologic environments, we have determined that the log normal mean of the radiogenic 4He flux across the Earth??s continental crust is 4.18 x 1010 4He atoms m-2 s-1. Furthermore, it was found that the range of the continental 4He degassing flux increases with decreasing time and space scales. The statistics can be interpreted as reflecting natural variability and suggest that the mechanisms transporting the crustal helium degassing flux contain a high degree of both spatial and temporal variability. This estimate of the log normal mean of the continental degassing flux of 4He is approximately equivalent to the radiogenic production rate for 4He in the whole crust. Large scale vertical mass transport in continental crust is estimated as scaled values of the order 10-5 cm2s-1 for helium (over 2Byr and 40km vertically) vs. 10-2 cm2s-1 for heat. This rate of mass transport requires not only release of He from the solid phase via diffusion, fracturing or comminution; but also an enhanced rate of mass transport facili

Thomas Torgersen and others

2011-03-25T23:59:59.000Z

198

Multi-Scale Modeling of Fission Gas Evolution in UO2  

Science Conference Proceedings (OSTI)

Fission gases in uranium dioxide (UO2) nuclear fuels, of which Xe is one of the most prominent, influence fuel performance during reactor operation and have...

199

UO 2 fission gas release rates from atomistic calculations of intrinsic ...  

Science Conference Proceedings (OSTI)

Based on DFT and empirical potential calculations, the diffusivity of fission gas atoms (Xe) in UO2 nuclear fuel has been calculated for a range of ...

200

A Characteristics-Based Approach to Radioactive Waste Classification in Advanced Nuclear Fuel Cycles  

E-Print Network (OSTI)

Konrad Mine, TRU waste in WIPP. Low Long-?Term short lived waste ix WAC WIPP Xe YMR yr Zr Isolation Pilot Plant (WIPP), the former Yucca

Djokic, Denia

2013-01-01T23:59:59.000Z

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


201

NERSC-6 Benchmarks  

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

Benchmarks NERSC-6 Benchmarks The NERSC-6 application benchmarks were used in the acquisition process that resulted in the NERSC Cray XE6 ("Hopper") system. A technical report...

202

Nuclear magnetic resonance of laser-polarized noble gases in molecules, materials and organisms  

E-Print Network (OSTI)

r I- t of silica aerogels by Xe-129 NMR spectroscopy andcatalysts, ceramics, aerogels, food products, and antiquatedxenon penetration within an aerogel sample as a function of

Goodson, B.M.

2010-01-01T23:59:59.000Z

203

Multiphase imaging of gas flow in a nanoporous material using remote detection NMR  

E-Print Network (OSTI)

determinations of silica aerogels by 129 Xe NMR spectroscopyapplications of silica aerogels, J. Non-Cryst. Solids ,analysis of silica aerogels, J. Non-Cryst. Solids , 186,

Harel, Elad; Granwehr, Josef; Seeley, Juliette A.; Pines, Alex

2005-01-01T23:59:59.000Z

204

Triple Coincidence Radioxenon Detector  

Science Conference Proceedings (OSTI)

The Automated Radioxenon Sampler/Analyzer (ARSA) built by Pacific Northwest National Laboratory (PNNL) is on e of the worlds most sensitive systems for monitoring the four radioxenon isotopes 133Xe, 133mXE, 131mXe and 135Xe. However, due to size, weight and power specifications appropriate to meet treaty-monitoring requirements; the ARSA is unsuitable for rapid deployment using modest transportation means. To transition this technology to a portable unit can be easily and rapidly deployed can be achieved by significant reductions in size, weight and power consumption if concentration were not required. As part of an exploratory effort to reduce both the size of the air sample and the gas processing requirement PNNL has developed an experimental nuclear detector to test and qualify the use of triple coincidence signatures (beta, conversion electron, x-ray) from two of the radioxenon isotopes (135Xe and 133Xe) as well as the more traditional beta-gamma coincidence signatures used by the ARSA system. The additional coincidence requirement allows for reduced passive shielding, and makes it possible for unambiguous detection of 133Xe and 153Xe in the presence of high 222Rn backgrounds. This paper will discuss the experimental setup and the results obtained for a 133Xe sample with and without 222Rn as an interference signature.

McIntyre, Justin I.; Aalseth, Craig E.; Bowyer, Ted W.; Hayes, James C.; Heimbigner, Tom R.; Morris, Scott J.; Reeder, Paul L.

2004-09-22T23:59:59.000Z

205

Data Archiving and Moving Data to/from NERSC Training March 8...  

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

User Feedback Using the Cray XE6 Joint NERSCOLCFNICS Cray XT5 Workshop NERSC User Group Training Remote Setup Online Tutorials Courses NERSC Training Accounts Request Form...

206

Nuclear magnetic resonance studies of quadrupolar nuclei and dipolar field effects  

E-Print Network (OSTI)

263 5.2 Nuclear and atomic265 5.2.1 Thermal equilibrium nuclearatomic magnetometer used for detecting Xe-129 nuclear magne-

Urban, Jeffry Todd

2004-01-01T23:59:59.000Z

207

Aerial Measurement of Radioxenon Concentration off the West Coast of Vancouver Island following the Fukushima Reactor Accident  

E-Print Network (OSTI)

In response to the Fukushima nuclear reactor accident, on March 20th, 2011, Natural Resources Canada conducted aerial radiation surveys over water just off of the west coast of Vancouver Island. Dose-rate levels were found to be consistent with background radiation, however a clear signal due to Xe-133 was observed. Methods to extract Xe-133 count rates from the measured spectra, and to determine the corresponding Xe-133 volumetric concentration, were developed. The measurements indicate that Xe-133 concentrations on average lie in the range of 30 to 70 Bq/m3.

L. E. Sinclair; H. C. J. Seywerd; R. Fortin; J. M. Carson; P. R. B. Saull; M. J. Coyle; R. A. Van Brabant; J. L. Buckle; S. M. Desjardins; R. M. Hall

2011-06-20T23:59:59.000Z

208

Environmental application of stable xenon and radioxenon monitoring  

E-Print Network (OSTI)

materials. Introduction Nuclear weapon and nuclear energyand potentially, nuclear weapons testing. Xe (5.243 day halfat most nuclear waste sites. Weapons-grade plutonium

2008-01-01T23:59:59.000Z

209

Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine...  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Balqon - XE-20 Balqon - 200-hp, 230V, AC induction motor with 215kWh, 312V, lithium-ion batteries...

210

Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine...  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

XE-30 Application: Tractor Fuel Type: Electricity Power Source(s): Balqon - 200-hp, 230V, AC induction motor with 215kWh, 600V, lithium...

211

Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine...  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Balqon - XE-30 Balqon - 200-hp, 230V, AC induction motor with 215kWh, 600V, lithium-ion batteries...

212

Progress in short period multilayer coatings for water windowapplications  

Science Conference Proceedings (OSTI)

Absolute photoionization cross-section measurements for amixture of ground and metastable states of Xe4+, Xe5+, and Xe6+ arereported in the photon energy range of 4d-nf transitions, which occurwithin or adjacent to the 13.5 nm window for extreme ultravioletlithography light source development. The reported values allow thequantification of opacity effects in xenon plasmas due to these 4d-4fautoionizing states. The oscillator strengths for the 4d-4f and 4d-5ftransitions in Xeq+ (q=1-6) ions are calculated using nonrelativisticHartree-Fock and random phase approximations. These are compared withpublished experimental values for Xe+ to Xe3+ and with the valuesobtained from the present experimental cross-section measurements forXe4+ to Xe6+. The calculations assisted in the determination of themetastable content in the ion beams for Xe5+T and Xe6+. The experimentswere performed by merging a synchrotron photon beam generated by anundulator beamline of the Advanced Light Source with an ion beam producedby an electron cyclotron resonance ion source.

Gullikson, E.M.; Salmassi, F.; Aquila, A.L.; Dollar, F.

2006-05-20T23:59:59.000Z

213

Radioactive Background Evaluation by Atom Counting  

SciTech Connect

We propose a new method of measuring 85Kr background levels by direct counting of impurity atoms. The beta-decay of 85Kr is a significant radioactive background for experiments that use liquified noble gases to search for dark matter and measure the low-energy solar neutrino flux. While there are several proposed methods for reducing Kr levels in these experiments, an independent technique is needed for measuring very low Kr levels. By selectively exciting Kr atoms to a metastable state, capturing them in a magneto-optical trap (MOT), and detecting fluorescence from the trapped atoms, individual Kr atoms can be counted with a high signal-to-noise ratio. This approach offers both higher sensitivity and shorter measurement times than more conventional techniques, with an estimated sensitivity of 3 x 10-14 in only 3 hours of integration.

Orzel, Chad [Department of Physics and Astronomy, Union College, Schenectady, NY 12308 (United States); McKinsey, Daniel [Yale University, New Haven, CT 06511 (United States)

2005-09-08T23:59:59.000Z

214

Structure-property relationship of metal-organic frameworks (MOFs) and physisorbed off-gas radionuclides.  

Science Conference Proceedings (OSTI)

We report on the host-guest interactions between metal-organic frameworks (MOFs) with various profiles and highly polarizable molecules (iodine), with emphasis on identifying preferential sorption sites in these systems. Radioactive iodine 129I, along with other volatile radionuclides (3H, 14C, Xe and Kr), represents a relevant component in the off-gas resulted during nuclear fuel reprocessing. Due to its very long half-life, 15.7 x 106 years, and potential health risks in humans, its efficient capture and long-term storage is of great importance. The leading iodine capture technology to date is based on trapping iodine in silver-exchanged mordenite. Our interests are directed towards improving existent capturing technologies, along with developing novel materials and alternative waste forms. Herein we report the first study that systematically monitors iodine loading onto MOFs, an emerging new class of porous solid-state materials. In this context, MOFs are of particular interest as: (i) they serve as ideal high capacity storage media, (ii) they hold potential for the selective adsorption from complex streams, due to their high versatility and tunability. This work highlights studies on both newly developed in our lab, and known highly porous MOFs that all possess distinct characteristics (specific surface area, pore volume, pore size, and dimension of the window access to the pore). The materials were loaded to saturation, where elemental iodine was introduced from solution, as well as from vapor phase. Uptakes in the range of {approx}125-150 wt% I2 sorbed were achieved, indicating that these materials outperform all other solid adsorbents to date in terms of overall capacity. Additionally, the loaded materials can be efficiently encapsulated in stable waste forms, including as low temperature sintering glasses. Ongoing studies are focused on gathering qualitative information with respect to localizing the physisorbed iodine molecules within the frameworks: X-ray single-crystal analyses, in conjunction with high pressure differential pair distribution function (d-PDF) studies aimed to identify preferential sites in the pores, and improve MOFs robustness. Furthermore, durability studies on the iodine loaded MOFs and subsequent waste forms include thermal analyses, SEM/EDS elemental mapping, and leach-durability testing. We anticipate for this in-depth analysis to further aid the design of advanced materials, capable to address major hallmarks: safe capture, stability and durability over extended timeframes.

Nenoff, Tina Maria; Chupas, Peter J. (Argonne National Laboratory); Garino, Terry J.; Rodriguez, Mark Andrew; Chapman, Karena W. (Argonne National Laboratory); Sava, Dorina Florentina

2010-11-01T23:59:59.000Z

215

Policy modeling for industrial energy use  

E-Print Network (OSTI)

blee@kogas.or.kr Mr. John W. Lee President, ExxonMobil GasMarketing, ExxonMobil Korea Inc. Kang Nam P. O. Box 1900

2003-01-01T23:59:59.000Z

216

Uncertainity and Error Analysis  

Science Conference Proceedings (OSTI)

... "Detection of Uranium from Cosmos-1402 in the Stratosphere," Science, Vol. 238, pp. 512-514. Eberhardt, KR and Mee, RW (1987). ...

217

An Integer Programming Approach to the Path Selection Problems  

E-Print Network (OSTI)

*Corresponding author. E-mail address: sspark@kaist.ac.kr ...... (1996) to reflect the characteristics of real-world networks. Given the number of nodes, we...

218

Numerical Stability of Path Tracing in Polyhedral Homotopy ...  

E-Print Network (OSTI)

supported by Kosef R004-000-2002-00200. skim@ewha.ac.kr. ...... (Arjeh M Cohen, Xiao-Shan Gao and Nobuki Takakayama, Editors), World Scientific,.

219

Publications Portal  

Science Conference Proceedings (OSTI)

... Impact of a Rooftop Photovoltaic System Published: 8/1/2003 Authors: A. Hunter Fanney, ER Weise, KR Henderson Abstract: A 35-kilowatt roof top ...

2012-09-17T23:59:59.000Z

220

Nanotechnology - HSE Considerations  

Science Conference Proceedings (OSTI)

Nanomaterials. An HSE Overview. K.R. McDonald. HSE - Product Safety & Regulatory Affairs. Bayer MaterialScience LLC kimberlymcdonald@bayerbms. com...

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


221

Ludwig Ganghofer [ERSTER BAND  

E-Print Network (OSTI)

Durst in den nu?- braunen Augen. Sein schlankes, kräftiges Körperchen streckte sich, als wäre auch

Wagner, Stephan

222

PAPERS PAPERS  

Science Conference Proceedings (OSTI)

Dec 31, 2012... bsyou@kims.re.kr. William Tumas, National Renewable Energy Laboratory, bill.tumas@nrel.gov. Advanced High-Temperature Structural.

223

U-138: Cisco IOS IPSec IKE Unspecified Denial of Service Vulnerability |  

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

8: Cisco IOS IPSec IKE Unspecified Denial of Service 8: Cisco IOS IPSec IKE Unspecified Denial of Service Vulnerability U-138: Cisco IOS IPSec IKE Unspecified Denial of Service Vulnerability April 2, 2012 - 7:00am Addthis PROBLEM: A vulnerability has been reported in Cisco IOS, which can be exploited by malicious people to cause a DoS (Denial of Service). PLATFORM: Cisco IOS XE 2.1.x Cisco IOS XE 2.2.x Cisco IOS XE 2.3.x Cisco IOS XE 2.4.x Cisco IOS XE 2.5.x Cisco IOS XE 2.6.x Cisco IOS XE 3.1.x Cisco IOS XE 3.3.x ABSTRACT: The IKEv1 feature of Cisco IOS Software contains a vulnerability that could allow an unauthenticated, remote attacker to cause a reload of an affected device. REFERENCE LINKS: Vendor Advisory Secunia Advisory SA48607 CVE-2012-0381 iMPACT ASSESSMENT: High discussion: The March 28, 2012, Cisco IOS Software Security Advisory bundled

224

Exploring Surfaces and Cavities in Lipoxygenase and Other Proteins by Hyperpolarized Xenon-129 NMR  

E-Print Network (OSTI)

Exploring Surfaces and Cavities in Lipoxygenase and Other Proteins by Hyperpolarized Xenon-129 NMR different proteins in the solution and solid states using both conventional and hyperpolarized 129Xe NMR of magnitude of its NMR signal. As a result, it is possible to observe Xe directly bound to the surface

Ronquist, Fredrik

225

Qtac Product PresentationQtac Product PresentationQtac Product PresentationQtac Product Presentation ION-TOF GmbH  

E-Print Network (OSTI)

and Marketing Manager #12;LEIS Technique Principle of Low Energy Ion Scattering (LEIS) He+, Ne+, Ar+, Kr+ 1 - 8-high surface sensitivity, top atomic layer analysis Static depth profiling information (up to 10 nm) Reliable at higher energies (e.g. 84Kr @ 8 keV) Static analysis requires a very sensitive detection system 192 193

Gilchrist, James F.

226

Selectivity Estimation for Spatio-Temporal Queries to Moving Objects  

E-Print Network (OSTI)

omni@islab.kaist.ac.kr chungcw@cs.kaist.ac.kr Divisionof ComputerScience Department of Electrical of selection queries: one for historical positions of moving objects and the other for future positions the selection query efficiently, an accu- rate estimation of the selectivity is required. The selectivity

Chung, Chin-Wan

227

Inr. J. Pres. Ves. & Piping 62 (1995)C-W 0199s Elsevier Science Limited  

E-Print Network (OSTI)

to Slovenian KrSko nuclear power plant is analyzed in Section 4. The results obtained show variations of stress in the analysis represent steam generators installed in Slovenian KrSko Nuclear Power Plant.4 The plant is assumed between the primary and secondary loop and the thermal loading. In the vicinity of the tube sheet

Cizelj, Leon

228

Versatile High-Fidelity Photovoltaic Module Emulation Woojoo Lee, Younghyun Kim, Yanzhi Wang, Naehyuck Chang, Massoud Pedram,  

E-Print Network (OSTI)

}@elpl.snu.ac.kr, shhan@konkuk.ac.kr ABSTRACT Photovoltaic (PV) cells are promising endurable renewable power sourcesVersatile High-Fidelity Photovoltaic Module Emulation System Woojoo Lee, Younghyun Kim, Yanzhi Wang. The proposed PV module emulation system includes a pilot PV cell, temperature sensors, an accelerometer

Pedram, Massoud

229

Determining the Specificity of Terms based on Information Theoretic Pum-Mo Ryu and Key-Sun Choi  

E-Print Network (OSTI)

Determining the Specificity of Terms based on Information Theoretic Measures Pum-Mo Ryu and Key@world.kaist.ac.kr, kschoi@world.kaist.ac.kr Abstract This paper introduces new specificity determining methods for terms based on information theoretic measures. The specificity of terms represents the quantity of domain

230

Environmental Management Operations Environmental Management...  

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

-. est m en cs4 0 00 Tr til ON ON .--. E .0 I s1 o o * est m 0 to o I s1 - kr, to <6 cv czt o * kr; o6 tri A fvs-; en en .7 re) .1- .1- * V:: k*O VI 0 eN1 0 , 2 2 --. es.1 en V...

231

Distillation purification and radon assay of liquid xenon  

Science Conference Proceedings (OSTI)

We succeeded to reduce the Kr contamination in liquid xenon by a factor of 1/1000 with a distillation system in Kamioka mine. Then, the remaining radioactivities (Radon and Kr) in purified liquid xenon were measured with the XMASS prototype detector. In this talk, the distillation system and the remaining internal radioactivity levels are reported.

Takeuchi, Yasuo [Kamioka Observatory, ICRR, Univ. of Tokyo, Kamioka-cho, Hida-shi, Gifu 506-1205 (Japan)

2005-09-08T23:59:59.000Z

232

Alternative Bench Standards: Sample Production Report  

SciTech Connect

The INL has prepared four standards representing krypton concentrations of 1.1X, 1.54X, 10X and 100X the reported atmospheric value of 70 dpm 85Kr per cubic centimeter of Kr gas at 25 degrees C (ie. 1.1X is 1.1 x 70, or 77 dpm 85Kr per cubic centimeter of Kr gas at 25 degrees C). A t-zero date and time of January 1, 2012 at 1200 Zulu was used for all standards. The Alternative Bench Standards (ABS) of 1.1X, 1.54X, 10X and 100X, are designated by titles of ABS-A, ABS-B, ABS C and ABS-D, respectively. The concentration of Kr in air is 1.14 ppm.

N. R. Mann; T. P. Houghton; M. G. Watrous; J. G. Eisenmenger; R. K. Hague

2012-09-01T23:59:59.000Z

233

Radioxenon production through neutron irradiation of stable xenon gas  

Science Conference Proceedings (OSTI)

The Spectral Deconvolution Analysis Tool (SDAT) software was developed to improve counting statistics and detection limits for nuclear explosion radionuclide measurements. SDAT utilizes spectral deconvolution spectroscopy techniques and can analyze both ?-? coincidence spectra for radioxenon isotopes and high-resolution HPGe spectra from aerosol monitors. The deconvolution algorithm of the SDAT requires a library of ?-? coincidence spectra of individual radioxenon isotopes to determine isotopic ratios in a sample. In order to get experimentally produced spectra of the individual isotopes we have irradiated enriched samples of 130Xe, 132Xe, and 134Xe gas with a neutron beam from the TRIGA reactor at The University of Texas. The samples produced were counted in an Automated Radioxenon Sampler/Analyzer (ARSA) style ?-? coincidence detector. The spectra produced show that this method of radioxenon production yields samples with very high purity of the individual isotopes for 131mXe and 135Xe and a sample with a substantial 133mXe to 133Xe ratio.

Haas, Derek A.; Biegalski, Steven R.; Foltz Biegalski, Kendra M.

2009-12-01T23:59:59.000Z

234

Monitoring radioactive xenon gas in room air using activated charcoal  

SciTech Connect

A method for monitoring room air for radioactive xenon gas is described. It uses activated charcoal vials, a vacuum source and a well-type scintillation counter. The method may be adapted for detection and identification of any radioactive gas excluding those with ultra-short half-lives. Sampling room air during xenon-133 ({sup 133}Xe) ventilation lung studies was performed using this technique. The results show that low concentrations of {sup 133}Xe in room air can be reliably detected and that staff exposure to {sup 133}Xe at this institution was within ICRP recommendations.

Langford, J.; Thompson, G. (Princess Margaret Hospital for Children, Perth (Australia) Sir Charles Gairdner Hospital, Perth (Australia))

1990-03-01T23:59:59.000Z

235

Laser Beams  

E-Print Network (OSTI)

Community needs to work together to provide the technical case for funding an IFE program. IFE program should nurture competition, with judgments made on the basis of technical progress and the potential of the various approaches to IFE. Direct-drive with lasers looks very attractive for IFE, the physics and needed technologies are mature and advancing. KrF provides physics advantages for direct drive. KrFs demonstrated performance is competitive with solid state lasers as a high-rep-rate durable, efficient IFE driver. (on several important parameters KrF technology leads) Direct Laser Drive is a better choice for Energy

Steve Obenschain

2010-01-01T23:59:59.000Z

236

Metal hydrides: Relevant Materials for Lithium-ion Batteries ...  

Science Conference Proceedings (OSTI)

Reactivity of MgH2 with lithium is a reversible conversion reaction (reversible capacity of 1500 mAh/g) generalized to many hydrides as: MHx + xLi+ + xe- ? M +...

237

DPD Presentation Template based on New Intel Foil Format  

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

Xeon Phi(tm) coprocessor So... * Use Intel Inspector XE on your code with offload disabled (on host) to identify correctness errors (e.g., deadlocks, races) - Once fixed, then...

238

Multiphase imaging of gas flow in a nanoporous material using remote detection NMR  

E-Print Network (OSTI)

pore structure on gas flow and dispersion with 129 Xe as thedominates the free gas flow, and dispersion is mainly due toinlet data. B. Dispersion of occluded gas in the center of

Harel, Elad; Granwehr, Josef; Seeley, Juliette A.; Pines, Alex

2005-01-01T23:59:59.000Z

239

MARMOT Enhanced  

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

To develop mechanistic models for fuel thermal conductivity, the Fuel team used supercells up to 55 nm long to determine the thermal conductivity of UO2 with Xe incorporated.

240

Absolute Branching Fraction Measurements for D{sup +} and D{sup 0} Inclusive Semileptonic Decays  

SciTech Connect

We present measurements of the inclusive branching fractions for the decays D{sup +}{yields}Xe{sup +}{nu}{sub e} and D{sup 0}{yields}Xe{sup +}{nu}{sub e}, using 281 pb{sup -1} of data collected on the {psi}(3770) resonance with the CLEO-c detector. We find B(D{sup 0}{yields}Xe{sup +}{nu}{sub e})=(6.46{+-}0.17{+-}0.13)% and B(D{sup +}{yields}Xe{sup +}{nu}{sub e})=(16.13{+-}0.20{+-}0.33)%. Using the known D meson lifetimes, we obtain the ratio {gamma}{sub D{sup +}}{sup sl}/{gamma}{sub D{sup 0}}{sup sl}=0.985{+-}0.028{+-}0.015, confirming isospin invariance at the level of 3%. The positron momentum spectra from D{sup +} and D{sup 0} have consistent shapes.

Adam, N. E.; Alexander, J. P.; Berkelman, K.; Cassel, D. G.; Duboscq, J. E.; Ecklund, K. M.; Ehrlich, R.; Fields, L.; Gibbons, L.; Gray, R.; Gray, S. W.; Hartill, D. L.; Heltsley, B. K.; Hertz, D.; Jones, C. D.; Kandaswamy, J.; Kreinick, D. L.; Kuznetsov, V. E.; Mahlke-Krueger, H.; Meyer, T. O. [Cornell University, Ithaca, New York 14853 (United States)] (and others)

2006-12-22T23:59:59.000Z

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


241

--No Title--  

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

Cray XE6, was at number 20. All of the systems share the laboratory's state-of-the-art, LEED-certified half acre high-performance computing facility, making ORNL home to the...

242

A :netao '?X,S vrtttcn (XX-x-162) to ;,r+ allison dascrllltnPr...  

Office of Legacy Management (LM)

XeJuction an& nurification methods for the metal should be sou&t ano the 12 usefulnas? oiL:stillation should be Determined. Sneddiw' s work on' 9e reduct.Zoa and- : castin? 2nd...

243

Darshan  

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

on the IBM Blue GeneP series of computers deployed at the Argonne Leadership Computing Facility, but it is portable across a wide variety of systems include the Cray XE6...

244

Ab initio study of MXe{sub n}{sup +} (M=Cu, Ag, and Au; n=1,2)  

SciTech Connect

The equilibrium geometries, vibrational frequencies, dissociation energies, and populations of the title species were studied at Hartree-Fock (HF), second-order Moeller-Plesset (MP2), and coupled-cluster singles-doubles (triples) [CCSD(T)] levels. The electron correlation effects and relativistic effects on the geometry and stability were investigated at the CCSD(T) level. Both effects stabilize title species. The populations analyses show that M-Xe bonding is dominated by electrostatic interactions and the best theoretical estimate of the dissociation energies are 1.104 and 2.260 eV for AuXe{sup +} and AuXe{sub 2}{sup +}, respectively. The Cu and Ag are weakly bonded to Xe compared to Au.

Li Xinying; Cao Xue [School of Physics and Electronics, Henan University, Kaifeng 475004 (China)

2008-02-15T23:59:59.000Z

245

HPC_Perf_via_IPM_2011.pptx  

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

vs. concurrency (M work on N tasks) How to use IPM : XE basics 1) Do "module load ipm", link with IPM, then run normally 2) Upon completion you get Maybe that's enough. If so...

246

HPC_AppPerf_2011.pptx  

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

in production 7 Using the right tool One tool example: IPM on XE 1) Do "module load ipm", link with IPM, then run normally 2) Upon completion you get Maybe that's enough. If so...

247

Gas Adsorption on Heterogeneous Single-Walled Carbon Nanotube...  

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

the adsorption of C, Xe, and Ar onto bundles of closed-ended SWNTs. The Single-walled carbon nanotubes (SWNTs) are of inter- est as gas adsorbents because of their unique...

248

Newsletter Fall 1992  

E-Print Network (OSTI)

What Do \\Xe Do with Nuclear Weapons mw? (15 pp. , 1990).The Future of U.S. Nuclear Weapons Policy. (87 pp. , 1990).cuts in tactical nuclear weapons, followed by similar Soviet

1992-01-01T23:59:59.000Z

249

Semiconductor processing with excimer lasers  

DOE Green Energy (OSTI)

The advantages of pulsed excimer lasers for semiconductor processing are reviewed. Extensive comparisons of the quality of annealing of ion-implanted Si obtained with XeCl and ruby lasers have been made. The results indicate that irrespective of the large differences in the optical properties of Si at uv and visible wavelengths, the efficiency of usage of the incident energy for annealing is comparable for the two lasers. However, because of the excellent optical beam quality, the XeCl laser can provide superior control of the surface melting and the resulting junction depth. Furthermore, the concentrations of electrically active point defects in the XeCl laser annealed region are 2 to 3 orders of magnitude lower than that obtained from ruby or Nd:YAG lasers. All these results seem to suggest that XeCl lasers should be suitable for fabricating not only solar cells but also the more advanced device structures required for VLSI or VHSIC applications.

Young, R.T.; Narayan, J.; Christie, W.H.; van der Leeden, G.A.; Rothe, D.E.; Cheng, L.J.

1983-01-01T23:59:59.000Z

250

Multiphase imaging of gas flow in a nanoporous material using remote detection NMR  

E-Print Network (OSTI)

D.P. Weitekamp, Zero field NMR and NQR, J. Chem. Phys.Amplification of xenon NMR and MRI by remote detection,of silica aerogels by 129 Xe NMR spectroscopy and imaging,

Harel, Elad; Granwehr, Josef; Seeley, Juliette A.; Pines, Alex

2005-01-01T23:59:59.000Z

251

NMR analysis on microfluidic devices by remote detection  

E-Print Network (OSTI)

hyperpolarized xenon (0.3% of NMR-active 129 Xe in a mixtureNMR analysis on microfluidic devices by remote detectionto perform high-sensitivity NMR imaging and spectroscopic

McDonnell, Erin E.; Han, SongI; Hilty, Christian; Pierce, Kimberly; Pines, Alexander

2005-01-01T23:59:59.000Z

252

Alternative Fuels Data Center: Heavy-Duty Vehicle and Engine...  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Balqon - XE-20 Application: Tractor Fuel Type: Electricity Power Source(s): Balqon - 200-hp, 230V, AC induction motor with 215kWh, 312V, lithium-ion batteries...

253

Shell model estimate of electric dipole moment in medium and heavy nuclei  

SciTech Connect

The nuclear electric dipole moment (EDM) and the nuclear Schiff moment for the lowest 1/2{sup +} state of {sup 129}Xe are investigated in terms of the nuclear shell model. We estimate the upper limit for the EDM of neutral {sup 129}Xe atom using the Schiff moment. We also estimate the upper limit of the nuclear EDM, which may be directly measured through ionic atoms.

Yoshinaga, Naotaka [Department of Physics, Saitama University, Saitama City 338-8570 (Japan); Higashiyama, Koji [Department of Physics, Chiba Institute of Technology, Narashino, Chiba 275-0023 (Japan)

2011-05-06T23:59:59.000Z

254

Appendix 69 Bull Trout Draft Recovery Plan. Chapter 3: Clark Fork Recovery Unit  

E-Print Network (OSTI)

.S., Schwartz, M.K., McKelvey, K.S., Foresman, K.R., Pilgrim, K.L., Giddings, B.J., and Lofroth, E.C. 2006. When

255

TransCom3 Data Set Released, October 2008  

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

TransCom3 Data Set Released, October 2008 The ORNL DAAC announces the release of "TransCom3: Annual Mean CO2 Flux Estimates from Atmospheric Inversion (Level 1)", prepared by K.R....

256

Algae Tile Data: 2004-2007, BPA-51; Preliminary Report, October 28, 2008.  

DOE Green Energy (OSTI)

Multiple files containing 2004 through 2007 Tile Chlorophyll data for the Kootenai River sites designated as: KR1, KR2, KR3, KR4 (Downriver) and KR6, KR7, KR9, KR9.1, KR10, KR11, KR12, KR13, KR14 (Upriver) were received by SCS. For a complete description of the sites covered, please refer to http://ktoi.scsnetw.com. To maintain consistency with the previous SCS algae reports, all analyses were carried out separately for the Upriver and Downriver categories, as defined in the aforementioned paragraph. The Upriver designation, however, now includes three additional sites, KR11, KR12, and the nutrient addition site, KR9.1. Summary statistics and information on the four responses, chlorophyll a, chlorophyll a Accrual Rate, Total Chlorophyll, and Total Chlorophyll Accrual Rate are presented in Print Out 2. Computations were carried out separately for each river position (Upriver and Downriver) and year. For example, the Downriver position in 2004 showed an average Chlorophyll a level of 25.5 mg with a standard deviation of 21.4 and minimum and maximum values of 3.1 and 196 mg, respectively. The Upriver data in 2004 showed a lower overall average chlorophyll a level at 2.23 mg with a lower standard deviation (3.6) and minimum and maximum values of (0.13 and 28.7, respectively). A more comprehensive summary of each variable and position is given in Print Out 3. This lists the information above as well as other summary information such as the variance, standard error, various percentiles and extreme values. Using the 2004 Downriver Chlorophyll a as an example again, the variance of this data was 459.3 and the standard error of the mean was 1.55. The median value or 50th percentile was 21.3, meaning 50% of the data fell above and below this value. It should be noted that this value is somewhat different than the mean of 25.5. This is an indication that the frequency distribution of the data is not symmetrical (skewed). The skewness statistic, listed as part of the first section of each analysis, quantifies this. In a symmetric distribution, such as a Normal distribution, the skewness value would be 0. The tile chlorophyll data, however, shows larger values. Chlorophyll a, in the 2004 Downriver example, has a skewness statistic of 3.54, which is quite high. In the last section of the summary analysis, the stem and leaf plot graphically demonstrates the asymmetry, showing most of the data centered around 25 with a large value at 196. The final plot is referred to as a normal probability plot and graphically compares the data to a theoretical normal distribution. For chlorophyll a, the data (asterisks) deviate substantially from the theoretical normal distribution (diagonal reference line of pluses), indicating that the data is non-normal. Other response variables in both the Downriver and Upriver categories also indicated skewed distributions. Because the sample size and mean comparison procedures below require symmetrical, normally distributed data, each response in the data set was logarithmically transformed. The logarithmic transformation, in this case, can help mitigate skewness problems. The summary statistics for the four transformed responses (log-ChlorA, log-TotChlor, and log-accrual ) are given in Print Out 4. For the 2004 Downriver Chlorophyll a data, the logarithmic transformation reduced the skewness value to -0.36 and produced a more bell-shaped symmetric frequency distribution. Similar improvements are shown for the remaining variables and river categories. Hence, all subsequent analyses given below are based on logarithmic transformations of the original responses.

Holderman, Charles

2009-02-10T23:59:59.000Z

257

Budgets of Divergent and Rotational Kinetic Energy during Two Periods of Intense Convection  

Science Conference Proceedings (OSTI)

Budgets of divergent and rotational components of kinetic energy (KD and KR) are investigated for two periods of intense convection. Derivations of the budget equations are presented for limited volumes in terms of VD and VR. The two periods ...

Dennis E. Buechler; Henry E. Fuelberg

1986-01-01T23:59:59.000Z

258

833.ps.gz - Optimization Online  

E-Print Network (OSTI)

sphong@cau.ac.kr). Research of this author was performed while visiting ...... SIAM J. Discrete Mathematics. 3 (1990) 411{430. [28] H. D. Sherali and W. P....

259

Automatic, Vol. 12, pp. 497506. Pergamon Press, 1976. Printed in Great Britain Minimal Stable Partial Realization*?  

E-Print Network (OSTI)

* = [A~A~... A?1' are defined as follows q­l a­l p?=k~oRi+knt,A!=~ Ci+kr (3.2) k -O where { Oif the jth

Moore, John Barratt

260

CD8+ Cell Anti-HIV Activity Rapidly Increases Upon Discontinuation of Early Antiretroviral Therapy  

E-Print Network (OSTI)

S. Killian : J. Roop : S. Ng : F. M. Hecht : J. A. Levy (*)90090-X. 34. Bonneau KR, Ng S, Foster H, et al. DerivationKillian & Jeremy Roop & Sharon Ng & Frederick M. Hecht & Jay

Killian, M. Scott; Roop, Jeremy; Ng, Sharon; Hecht, Frederick M.; Levy, Jay A.

2009-01-01T23:59:59.000Z

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


261

An atom trap system for practical 81 Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 and Physics Department,  

E-Print Network (OSTI)

. In paleoclimate research, 14 C dating is used to deter- mine the age of polar ice, which provides valuable informa krypton isotope, 85 Kr, which is a fission product of Uranium-235 and Plutonium-239, and is released

262

Active Travel Behavior  

E-Print Network (OSTI)

Evenson, K.R. , A.H. Herring, and S.L. Huston. (2005). quasi-longitudinal study Evenson, Herring, and Huston (2005)household. Although Evenson, Herring, and Huston noted that

Burbidge, Shaunna K; Goulias, Konstadinos G.

2008-01-01T23:59:59.000Z

263

Nurture over nature: Summer germinating Lupinus nanus are a result of anthropogenic germination cues and are not an independently evolving population  

E-Print Network (OSTI)

395, Goodman KR, Morris VRF, Welter SC, Roderick GK (2008)Moore AJ, Moore WL, Morris VRF, Baldwin BG (2009) Molecular90, 378-387. Morris VRF and Dodd RS (2006) Characterization

Morris, Veronica Ruth Franco

2009-01-01T23:59:59.000Z

264

SIGNATURES  

E-Print Network (OSTI)

Installations for monitoring and controlling radioactive discharges and for surveillance of the environment in Slovenia during normal operations of the Krko nuclear power plant site; monitoring network

Krko; Nuclear Power Plant; C. Gitzinger (team Leader; V. Tanner; A. Godeanu-metz; M. Betti (jrc-karlsruhe; C. Gitzinger; V. Tanner; E. Henrich; A. Godeanu-metz; M. Betti

2007-01-01T23:59:59.000Z

265

Content Sharing between Home Networks by using Personal Information and Associated Fuzzy Vault  

E-Print Network (OSTI)

[1]-[3]. Ordinary people have become producers of contents as well as consumers so called "prosumers (e-mail: yro@icu.ac.kr) Prof. Konstantinos N. Plataniotis is a professor of Electrical and Computer

Ro, Yong Man

266

Browse by Discipline -- E-print Network Subject Pathways: Engineering...  

Office of Scientific and Technical Information (OSTI)

S | T | U | V | W | X | Y | Z Naval Research Laboratory, Plasma Physics Division, Electra KrF Laser Program Naval Research Laboratory, Plasma Physics Division, Laser-Plasma Branch...

268

Pre-clinical Measures of Eye Damage (Lens Opacity), Case-control Study of Tuberculosis, and Indicators of Indoor Air Pollution from Biomass Smoke  

E-Print Network (OSTI)

Indoor air pollution from biomass fuels and respiratoryTuberculosis and Indoor Biomass and Kerosene Use in Nepal: AR.D. Retherford, and K.R. Smith, Biomass cooking fuels and

Pokhrel, Amod Kumar

2010-01-01T23:59:59.000Z

269

Atom Trap Trace Analysis at ANL | U.S. DOE Office of Science...  

Office of Science (SC) Website

atoms of the more common isotope found in nature. The device has uses for dating ice and water for geological studies, or monitoring nuclear waste in the environment. 81Kr...

270

RADIOLOGICAL HEALTH AND RELATED STANDARDS FOR NUCLEAR POWER PLANTS. VOLUME 2 OF HEALTH AND SAFETY IMPACTS OF NUCLEAR, GEOTHERMAL, AND FOSSIL-FUEL ELECTRIC GENERATION IN CALIFORNIA  

E-Print Network (OSTI)

2000. Total fuel mix is 11% MOX + 89% U0 fuel with PuRadionuclide H U0 Fuel U0 + MOX Fuel 14C Kr I llO Other

Nero, A.V.

2010-01-01T23:59:59.000Z

271

Persistence and Java - A Balancing Act  

E-Print Network (OSTI)

Atkinson,M.P. Proceedings of Objects and Databases, International Symposium at ECOOP 2000. Sophia Antipolis, France, June 2000. Published as Lecture Notes in Computer Science, (Dittrich, KR et al Eds). Volume No. 1944. pp 1-31 Springer

Atkinson, M.P.

272

Sobolev seminorm of quadratic functions with applications to ...  

E-Print Network (OSTI)

Fowler, K.R., Reese, J.P., Kees, C.E., Dennis Jr, J.E., Kelley, C.T., Miller, C.T., ... Hemker, T., Fowler, K., Von Stryk, O.: Derivative-free optimization methods for...

273

CHEMICAL TRANSPORT IN A FISSURED BOCK: VERIFICATION OF A NUMERICAL MODEL  

E-Print Network (OSTI)

H. c. , Migration of radionuclide chains through anI. , Migration of radionuclides in fissured rock-- theAd decay constant of radionuclide T v 2D e; /Kr p p T

Rasmuson, A.

2013-01-01T23:59:59.000Z

274

Microsoft PowerPoint - Investigation of Kinetic Parameters Determinati...  

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

Simulation August 27, 2012. K.R. Kim. T.J. Kim, S. Paek & H.S. Lee Korea Atomic Energy Research Institute 2012 IPRC 2 Outline Motivation & challenges Theory &...

275

table of contents  

Science Conference Proceedings (OSTI)

K.R. Robilliard, B.W. Lightfoot and C.M. Ng. Treatment of Industrial Waste Material in Reverberatory Furnace at Onahama Smelter [pp. 19-27] N. Kikumoto, K.

276

Energy Analysis of Convectively Induced Wind Perturbations  

Science Conference Proceedings (OSTI)

Budgets of divergent and rotational components of kinetic energy (KD and KR) are examined for four upper level wind speed maxima that develop during the fourth Atmospheric Variability Experiment (AVE IV) and the first AVE-Severe Environmental ...

Henry E. Fuelberg; Dennis E. Buechler

1989-04-01T23:59:59.000Z

277

National Infrastructure Protection Plan  

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

Infrastructure Infrastructure Protection Plan 2006 Preface Preface i The ability to protect the critical infrastructure and key resources (CI/KR) of the United States is vital to our national security, public health and safety, economic vitality, and way of life. U.S. policy focuses on the importance of enhancing CI/KR protection to ensure that essential governmental missions, public services, and economic functions are maintained in the event of a

278

A U.S. Department of Energy Office of Science Laboratory  

E-Print Network (OSTI)

of Science U.S. Department of Energy PDF from powder diffraction (neutrons, x-rays) ! I = fiei r Q" r ri i=1.e. wavelength: ! "R # $min 4 = 2% 4kmax = % 2kmax ! k = 2" # De Broglie ! kmax " # 2$R #12;Pioneering Science and Technology Office of Science U.S. Department of Energy Spatial Resolution R R ! sin2kR + sin[2k(R + "R

Haskel, Daniel

279

Summary Report for the Development of Materials for Volatile Radionuclides  

Science Conference Proceedings (OSTI)

The materials development summarized here is in support of the Waste Forms campaign, Volatile Radionuclide task. Specifically, materials are being developed for the removal and immobilization of iodine and krypton, specifically 129I and 85Kr. During FY 2010, aerogel materials were investigated for removal and immobilization of 129I. Two aerogel formulations were investigated, one based on silica aerogels and the second on chalcogenides. For 85Kr, metal organic framework (MOF) structures were investigated.

Strachan, Denis M.; Chun, Jaehun; Henager, Charles H.; Matyas, Josef; Riley, Brian J.; Ryan, Joseph V.; Thallapally, Praveen K.

2010-11-22T23:59:59.000Z

280

Polarizability tensor Vector relation  

E-Print Network (OSTI)

" # $ $ $ % & ' ' ' = (x 0 0 0 (y 0 0 0 (z " # $ $ $ % & ' ' ' Eix Eiy Eiz " # $ $ $ % & ' ' ' ! r p = "x Eix ^x + "y Eiy ^y + "z Eiz ^z ! "x = V#0 (#r $1) 1+ Lx (#r $1) ! fa,b,c (") = k2 abc 3 #r $1 1+ La,b,c (#r $1) sin[ ] amn bmn " # $ % & ' ! r Ei( r r) = amn (M ) Rg r Mmn (kr,",#) + bmn (N ) Rg r Nmn (kr,",#)[ ]m,n $ ! r

Zhang, Guifu

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


281

DOE-Imaging grant FG02-06ER15829, entitled "Developing Laser-Induced Re-Collision Electron Self-Diffraction" Brief summary of accomplishments  

DOE Green Energy (OSTI)

Our principal goal was the experimental demonstration of Laser-Induced Electron Diffraction (LIED). Key steps along the development of this experimental technique have been accomplished and reported in the publications listed in this brief report. We started with measuring 3D electron momenta spectra in aligned nitrogen and oxygen molecules. Chakra Maharjan (Ph.D. student of Lew Cocke) was a lead researcher on this project. Although Chakra succeeded in obtaining those spectra, we were scooped by the publication of identical results in Science by the NRC Ottawa group. Our results were never published as a refereed article, but became a part of Chakra's Ph.D. dissertation. That Science paper was the first experimental demonstration of Laser-Induced Electron Diffraction (LIED). Chakra also worked on wavelength dependence of 3D ATI spectra of atoms and molecules using tunable OPA pulses. Another Ph.D. student, Maia Magrakvelidze (her GRA was funded by the grant), started working on COLTRIMS experiments using OPA pulses (1800 nm wavelength). After some initial experiments it became apparent that COLTRIMS did not yield sufficient count rates of electrons in the high-energy part of the spectrum to see diffraction signatures with acceptable statistics (unfavorable scaling of the electron yield with laser wavelength was partly to blame). Nevertheless, Maia managed to use COLTRIMS and OPA to measure the angular dependence of the tunneling ionization rate in D{sub 2} molecules. Following the initial trial experiments, the decision was made to switch from COLTRIMS to VMI in order to increase the count rates by a factor of {approx}100, which may have given us a chance to see LIED. Research Associate Dr. Sankar De (his salary was funded by the grant), in collaboration with Matthias Kling's group (then at MPQ Garching), proceeded to design a special multi-electrode VMI spectrometer for capturing high-energy ATI electrons and to install it in place of COLTRIMS inside our experimental chamber. That apparatus was later used for the first demonstration of field-free orientation in CO using two-color laser pulses as well as for a series of other experiments, such as pump-probe studies of molecular dynamics with few-cycle laser pulses, control of electron localization in dissociating hydrogen molecules using two-color laser pulses, and ATI spectra of Xe ionized by two-color laser pulses. In parallel, Dipanwita Ray (Ph.D. student of Lew Cocke) worked on measuring angle-resolved ATI spectra of noble gases using a stereo-ATI phasemeter as a TOF electron spectrometer. She observed the angular diffraction structures in 3D ATI spectra of Ar, Kr and Xe, which were interpreted in terms of the Quantitative Rescattering theory newly developed by C.D. Lin. We also attempted to use a much more powerful OPA (five times more energy per pulse than the one we had at JRML) available at the Advanced Laser Light Source (ALLS) in Montreal to observe LIED. Two visits to ALLS by the PI, Igor Litvinyuk, and one visit by the PI's Ph.D. student (Irina Bocharova) were funded by the grant. Though we failed to observe LIED (the repetition rate of the ALLS OPA was too low at only 100 Hz), this international collaboration resulted in several publications on other related subjects, such as the wavelength dependence of laser Coulomb explosion of hydrogen, the wavelength dependence of non-sequential double ionization of neon and argon, the demonstration of charge-resonance enhanced ionization in CO{sub 2}, and the study of non-elastic scattering processes in H{sub 2}. Theoretical efforts to account for the hydrogen Coulomb explosion experiment resulted in another paper by Maia Magrakvelidze as lead author. Although for various reasons we failed to achieve our main goal of observing LIED, we salute the recent success in this endeavor by Lou DiMauro's group (with theoretical support from our KSU colleague C.D. Lin) published in Nature, which validates our approach.

Igor V. Litvinyuk, and Itzik Ben-Itzhak

2012-04-01T23:59:59.000Z

282

Atomistic Simulations of Mass and Thermal Transport in Oxide Nuclear Fuels  

SciTech Connect

In this talk we discuss simulations of the mass and thermal transport in oxide nuclear fuels. Redistribution of fission gases such as Xe is closely coupled to nuclear fuel performance. Most fission gases have low solubility in the fuel matrix, specifically the insolubility is most pronounced for large fission gas atoms such as Xe, and as a result there is a significant driving force for segregation of gas atoms to grain boundaries or dislocations and subsequently for nucleation of gas bubbles at these sinks. The first step of the fission gas redistribution is diffusion of individual gas atoms through the fuel matrix to existing sinks, which is governed by the activation energy for bulk diffusion. Fission gas bubbles are then formed by either separate nucleation events or by filling voids that were nucleated at a prior stage; in both cases their formation and latter growth is coupled to vacancy dynamics and thus linked to the production of vacancies via irradiation or thermal events. In order to better understand bulk Xe behavior (diffusion mechanisms) in UO{sub 2{+-}x} we first calculate the relevant activation energies using density functional theory (DFT) techniques. By analyzing a combination of Xe solution thermodynamics, migration barriers and the interaction of dissolved Xe atoms with U, we demonstrate that Xe diffusion predominantly occurs via a vacancy-mediated mechanism, though other alternatives may exist in high irradiation fields. Since Xe transport is closely related to diffusion of U vacancies, we have also studied the activation energy for this process. In order to explain the low value of 2.4 eV found for U migration from independent damage experiments (not thermal equilibrium) the presence of vacancy clusters must be included in the analysis. Next a continuum transport model for Xe and U is formulated based on the diffusion mechanisms established from DFT. After combining this model with descriptions of the interaction between Xe and grain boundaries derived from separate atomistic calculations, we simulate Xe redistribution for a few simple microstructures using finite element methods (FEM), as implemented in the MOOSE framework from Idaho National Laboratory. Thermal transport together with the power distribution determines the temperature distribution in the fuel rod and it is thus one of the most influential properties on nuclear fuel performance. The fuel thermal conductivity changes as function of time due to microstructure evolution (e.g. fission gas redistribution) and compositional changes. Using molecular dynamics simulations we have studied the impact of different types of grain boundaries and fission gas bubbles on UO{sub 2} thermal conductivity.

Andersson, Anders D. [Los Alamos National Laboratory; Uberuaga, Blas P. [Los Alamos National Laboratory; Du, Shiyu [Los Alamos National Laboratory; Liu, Xiang-Yang [Los Alamos National Laboratory; Nerikar, Pankaj [IBM; Stanek, Christopher R. [Los Alamos National Laboratory; Tonks, Michael [Idaho National Laboratory; Millet, Paul [Idaho National Laboratory; Biner, Bulent [Idaho National Laboratory

2012-06-04T23:59:59.000Z

283

Nuclear Magnetic Resonance Studies of Resorcinol-Formaldehyde Aerogels  

Science Conference Proceedings (OSTI)

In this article we report a detailed study of resorcinol-formaldehyde (RF) aerogels prepared under different processing conditions, [resorcinol]/[catalyst] (R/C) ratios in the starting sol-gel solutions, using continuous flow hyperpolarized 129Xe NMR in combination with solid-state 13C and two-dimensional wide-line separation (2D-WISE) NMR techniques. The degree of polymerization and the mobility of the cross-linking functional groups in RF aerogels are examined and correlated with the R/C ratios. The origin of different adsorption regions is evaluated using both co-adsorption of chloroform and 2D EXSY 129Xe NMR. A hierarchical set of Xe exchange processes in RF aerogels is found using 2D EXSY 129Xe NMR. The exchange of Xe gas follows the sequence (from fastest to slowest): mesopores with free gas, gas in meso- and micro-pores, free gas with micropores, and, finally, among micropore sites. The volume-to-surface-area (Vg/S) ratios for aerogels are measured for the first time without the use of geometric models. The Vg/S parameter, which is related both to the geometry and the interconnectivity of the pore space, has been found to correlate strongly with the R/C ratio and exhibits an unusually large span: an increase in the R/C ratio from 50 to 500 results in about a 5-fold rise in Vg/S.

Moudrakovski, Igor L.; Ratcliffe, C I.; Ripmeester, J A.; Wang, Li Q.; Exarhos, Gregory J.; Baumann, T; Satcher, J H.

2005-06-09T23:59:59.000Z

284

In-situ gamma spectrometry measurements of time-dependent Xenon-135 inventory in the TRIGA Mark II reactor Vienna  

E-Print Network (OSTI)

In this work, it has been shown that the time dependent Xe-135 inventory in the TRIGA Mark II reactor in Vienna, Austria can be measured via gamma spectrometry even in the presence of strong background radiation. It is focussing on the measurement of (but not limited to) the nuclide Xe-135. The time dependent Xe-135 inventory of the TRIGA Mark II reactor Vienna has been measured using a temporary beam line between one fuel element of the core placed onto the thermal column after shutdown and a detector system located just above the water surface of the reactor tank. For the duration of one week, multiple gamma ray spectra were recorded automatically, starting each afternoon after reactor shutdown until the next morning. One measurement series has been recorded over the weekend. The Xe-135 peaks were extracted from a total of 1227 recorded spectra using an automated peak search algorithm and analyzed for their time-dependent properties. Although the background gamma radiation present in the core after shutdown was large especially in the lower energy range, the Xe-135 peak located at 249.8 keV could be extracted from the most spectra where present and could be compared to theoretical calculations.

Julia Riede; Helmuth Boeck

2013-07-29T23:59:59.000Z

285

CUG2011_Hopper2  

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

Cray User Group 2011 Proceedings 1 of 13 Cray User Group 2011 Proceedings 1 of 13 Transitioning Users from the Franklin XT4 System to the Hopper XE6 System Katie Antypas and Yun (Helen) He, National Energy Research Scientific Computing Center ABSTRACT: The Hopper XE6 system, NERSC's first peta-flop system with over 153,000 cores has increased the computing hours available to the Department of Energy's Office of Science users by more than a factor of 4. As NERSC users transition from the Franklin XT4 system with 4 cores per node to the Hopper XE6 system with 24 cores per node, they have had to adapt to a lower amount of memory per core and on- node I/O performance which does not scale up linearly with the number of cores per node. This paper will discuss Hopper's usage during the "early user period" and

286

Large area liquid argon detectors for interrogation systems  

SciTech Connect

Measurements of the efficiency, pulse shape, and energy and time resolution of liquid argon (LAr) detectors are presented. Liquefied noble gas-based (LNbG) detectors have been developed for the detection of dark matter and neutrinoless double-beta decay. However, the same qualities that make LNbG detectors ideal for these applications, namely their size, cost, efficiency, pulse shape discrimination and resolution, make them promising for portal screening and the detection of Special Nuclear Materials (SNM). Two 18-liter prototype detectors were designed, fabricated, and tested, one with pure LAr and the other doped with liquid Xe (LArXe). The LArXe detector presented the better time and energy resolution of 3.3 ns and 20% at 662 KeV, respectively. The total efficiency of the detector was measured to be 35% with 4.5% of the total photons detected in the photopeak.

Gary, Charles; Kane, Steve; Firestone, Murray I.; Smith, Gregory [Adelphi Technology LLC, Purdue Technology Center, 5225 Exploration Drive, Indianapolis, IN 46241 (United States); Gozani, Tsahi; Brown, Craig; Kwong, John; King, Michael J. [Rapiscan Laboratories, 520 Almanor Avenue, Sunnyvale, CA 94085 (United States); Nikkel, James A.; McKinsey, Dan [Physics Department, Yale University, New Haven, CT 06520 (United States)

2013-04-19T23:59:59.000Z

287

NMR Detection Using Laser-Polarized Xenon as a DipolarSensor  

Science Conference Proceedings (OSTI)

Hyperpolarized Xe-129 can be used as a sensor to indirectly detect NMR spectra of heteronuclei that are neither covalently bound nor necessarily in direct contact with the Xe atoms, but coupled through long-range intermolecular dipolar couplings. In order to reintroduce long-range dipolar couplings the sample symmetry has to be broken. This can be done either by an asymmetric sample arrangement, or by breaking the symmetry of the spin magnetization with field gradient pulses. Experiments are performed where only a small fraction of the available Xe-129 magnetization is used for each point, so that a single batch of xenon suffices for the point-by-point acquisition of a heteronuclear NMR spectrum. Examples with H-1 as analyte nucleus show that these methods have the potential to obtain spectra with a resolution that is high enough to determine homonuclear J couplings. The applicability of this technique with remote detection is discussed.

Granwehr, Josef; Urban, Jeffry T.; Trabesinger, Andreas H.; Pines, Alexander

2005-02-28T23:59:59.000Z

288

Xenon ion laser-induced fluorescence using a visible tunable diode laser near 680 nm  

SciTech Connect

Laser-induced fluorescence (LIF) measurements have been performed for the first time in a low temperature (T{sub e}{approx_equal}0.6 eV) Xe plasma using a tunable diode laser in the visible range of wavelengths. The transition in Xe II involved the ({sup 3}P{sub 1})5d[3]{sub 7/2} metastable state and the excitation wavelength was found to be 680.570{+-}0.001 nm (air). LIF measurements of I{sub 2} in a room temperature iodine gas cell were used to monitor the wavelength of the laser during the measurements.

Severn, Greg; Lee, Dongsoo; Hershkowitz, Noah [Department of Physics, University of San Diego, San Diego, California 92110 (United States); Department of Engineering Physics, University of Wisconsin at Madison, Madison, Wisconsin 53706 (United States)

2007-11-15T23:59:59.000Z

289

Gamma-soft Analog of the Confined Beta-soft Rotor Model  

E-Print Network (OSTI)

A gamma-soft analog of the confined beta-soft (CBS) rotor model is developed, by using a gamma-independent displaced infinite well beta-potential in the Bohr Hamiltonian, for which exact separation of variables is possible. Level schemes interpolating between the E(5) critical point symmetry (with R(4/2)=E(4)/E(2)= 2.20) and the O(5) gamma-soft rotor (with R(4/2)=2.50) are obtained, exhibiting a crossover of excited 0+ bandheads which leads to agreement with the general trends of first excited 0+ states in this region and is observed experimentally in 128-Xe and 130-Xe.

D. Bonatsos; D. Lenis; N. Pietralla; P. A. Terziev

2006-09-19T23:59:59.000Z

290

Status and physics potential of NEXT-100  

E-Print Network (OSTI)

The NEXT-100 time projection chamber, currently under construction, will search for neutrinoless double beta decay (bb0nu) using 100-150 kg of high-pressure xenon gas enriched in the Xe-136 isotope to ~91%. The detector possesses two important features for bb0nu searches: very good energy resolution (better than 1% FWHM at the Q value of Xe-136) and event topological information for the distinction between signal and background. Furthermore, the technique can be extrapolated to the ton-scale, thus allowing the full exploration of the inverted hierarchy of neutrino masses.

J. Martin-Albo; J. J. Gomez-Cadenas; for the NEXT Collaboration

2013-01-14T23:59:59.000Z

291

Method of locating a leaking fuel element in a fast breeder power reactor  

DOE Patents (OSTI)

Leaking fuel elements in a fast reactor are identified by measuring the ratio of .sup.134 Xe to .sup.133 Xe in the reactor cover gas following detection of a fuel element leak, this ratio being indicative of the power and burnup of the failed fuel element. This procedure can be used to identify leaking fuel elements in a power breeder reactor while continuing operation of the reactor since the ratio measured is that of the gases stored in the plenum of the failed fuel element. Thus, use of a cleanup system for the cover gas makes it possible to identify sequentially a multiplicity of leaking fuel elements without shutting the reactor down.

Honekamp, John R. (Downers Grove, IL); Fryer, Richard M. (Idaho Falls, ID)

1978-01-01T23:59:59.000Z

292

National Infrastructure Protection Plan | Department of Energy  

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

Infrastructure Protection Plan Infrastructure Protection Plan National Infrastructure Protection Plan Protecting the critical infrastructure and key resources (CI/KR) of the United States is essential to the Nation's security, public health and safety, economic vitality, and way of life. Attacks on CI/KR could significantly disrupt the functioning of government and business alike and produce cascading effects far beyond the targeted sector and physical location of the incident. Direct terrorist attacks and natural, manmade, or technological hazards could produce catastrophic losses in terms of human casualties, property destruction, and economic effects, as well as profound damage to public morale and confidence. Attacks using components of the Nation's CI/KR as weapons of mass destruction could have even more

293

Breaking through the Glass Ceiling: The Correlation Between the Self-Diffusivity in and Krypton Permeation through Deeply Supercooled Liquid Nanoscale Methanol Films  

DOE Green Energy (OSTI)

Molecular beam techniques, temperature-programmed desorption (TPD), and reflection absorption infrared spectroscopy (RAIRS) are used to explore the relationship between krypton permeation through and the self-diffusivity of supercooled liquid methanol at temperatures near (100-115 K) the glass transition temperature, Tg (103 K). Layered films, consisting of CH3OH and CD3OH, are deposited ontop of a monolayer of Kr on a graphene covered Pt(111) substrate at 25 K. Concurrent Kr TPD and RAIRS spectra are acquired during the heating of the composite film to temperatures above Tg. The CO vibrational stretch is sensitive to the local molecular environment and is used to determine the supercooled liquid diffusivity from the intermixing of the isotopic layers. We find that the Kr permeation and the diffusivity of the supercooled liquid are directly and quantitatively correlated. These results validate the rare gas permeation technique as a tool for probing the diffusivity of supercooled liquids.

Smith, R. Scott; Matthiesen, Jesper; Kay, Bruce D.

2010-03-28T23:59:59.000Z

294

Energy Critical Infrastructure and Key Resources Sector-Specific  

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

Energy Energy Critical Infrastructure and Key Resources Sector-Specific Plan as input to the National Infrastructure Protection Plan (Redacted) May 2007 Department of Energy Energy Sector Government Coordinating Council Letter of Support i ii Energy Sector-Specific Plan (Redacted) Energy Sector Coordinating Councils Letter of Concurrence The National Infrastructure Protection Plan (NIPP) provides the unifying structure for the integration of federal critical infrastructures and key resources (CI/KR) protection efforts into a single national program. The NIPP includes an overall framework integrating federal programs and activities that are currently underway in the various sectors, as well as new and developing CI/KR protection efforts. The Energy

295

Conversion electrons used to monitor the energy scale of electron spectrometer near tritium endpoint - a simulation study  

E-Print Network (OSTI)

Measurements of the endpoint region of the tritium beta-decay spectrum provides good possibility to determine neutrino mass. This, however, needs a perfect monitoring of the spectrometer energy scale. A parallel measurement of electron line of known energy - in particular the 83mKr conversion K-line - may serve well to this purpose. The 83Rb decaying to 83mKr seems to be a very suitable radioactive source due to its halflife of 86.2 day. In this work, we determine the amount of 83Rb which is necessary for a successful monitoring.

M. Rysavy

2006-01-15T23:59:59.000Z

296

OSIRIS and SOMBRERO Inertial Fusion Power Plant Designs, Volume 2: Designs, Assessments, and Comparisons  

Science Conference Proceedings (OSTI)

This is a comprehensive design study of two Inertial Fusion Energy (IFE) electric power plants. Conceptual designs are presented for a fusion reactor (called Osiris) using an induction-linac heavy-ion beam driver, and another (called SOMBRERO) using a KrF laser driver. The designs covered all aspects of IFE power plants, including the chambers, heat transport and power conversion systems, balance-of-plant facilities, target fabrication, target injection and tracking, as well as the heavy-ion and KrF drivers. The point designs were assessed and compared in terms of their environmental & safety aspects, reliability and availability, economics, and technology development needs.

Meier, W. R.; Bieri, R. L.; Monsler, M. J.; Hendricks, C. D.; Laybourne, P.; Shillito, K. R.

1992-03-01T23:59:59.000Z

297

PHYS 551 Lecture #27 Title: Tight-Binding  

E-Print Network (OSTI)

PHYS 551 Lecture #27 Title: Tight-Binding Now that we have shown that (~k;~r) = P ~R ei~k~RA(~r ~R-function (~k;~r) must be normalized. Thus Z dV = 1 = j j2 X R X R0 ei~k~R ~R0 Z A(~r ~R0)A(~r ~R)dV Now for each ~R0, the sum over ~R must be the same since the crystal has the same distribution of neighbors

Winokur, Michael

298

Xenon in Mercury-Manganese Stars  

E-Print Network (OSTI)

Previous studies of elemental abundances in Mercury-Manganese (HgMn) stars have occasionally reported the presence of lines of the ionized rare noble gas Xe II, especially in a few of the hottest stars with Teff ~ 13000--15000 K. A new study of this element has been undertaken using observations from Lick Observatory's Hamilton Echelle Spectrograph. In this work, the spectrum synthesis program UCLSYN has been used to undertake abundance analysis assuming LTE. We find that in the Smith & Dworetsky sample of HgMn stars, Xe is vastly over-abundant in 21 of 22 HgMn stars studied, by factors of 3.1--4.8 dex. There does not appear to be a significant correlation of Xe abundance with Teff. A comparison sample of normal late B stars shows no sign of Xe II lines that could be detected, consistent with the expected weakness of lines at normal abundance. The main reason for the previous lack of widespread detection in HgMn stars is probably due to the strongest lines being at longer wavelengths than the photographic blue. The lines used in this work were 4603.03A, 4844.33A and 5292.22A.

M. M. Dworetsky; J. L. Persaud; K. Patel

2008-01-16T23:59:59.000Z

299

Status of EXO-200  

Science Conference Proceedings (OSTI)

EXO-200 is the first phase of the Enriched Xenon Observatory (EXO) experiment, which searches for neutrinoless double beta decay in {sup 136}Xe to measure the mass and probe the Majorana nature of the neutrino. EXO-200 consists of 200 kg of liquid Xe enriched to 80% in {sup 136}Xe in an ultra-low background TPC. Energy resolution is enhanced through the simultaneous collection of scintillation light using Large Area Avalanche Photodiodes (LAAPD's) and ionization charge. It is being installed at the WIPP site in New Mexico, which provides a 2000 meter water-equivalent overburden. EXO-200 will begin taking data in 2009, with the expected two-year sensitivity to the half-life for neutrinoless double beta decay of 6.4 x 10{sup 25} years. According to the most recent nuclear matrix element calculations, this corresponds to an effective Majorana neutrino mass of 0.13 to 0.19 eV. It will also measure the two neutrino mode for the first time in {sup 136}Xe.

Ackerman, Nicole; /SLAC

2011-12-06T23:59:59.000Z

300

Semester Project FS 2014 Focus on Energy, Flow  

E-Print Network (OSTI)

to the chamber for liquefied Xe. Liquid nitrogen will be used as a coolant. The major challenge with this projectSemester Project ­ FS 2014 Focus on Energy, Flow and Processes Cryogenic Feed System for liquefied temperatures to keep the fuel in a liquefied state (

Daraio, Chiara

Note: This page contains sample records for the topic "uus kr xe" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
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301

In Situ Samplings and Remote Sensing Measurements to Characterize Aerosol Properties over Southeast Italy  

Science Conference Proceedings (OSTI)

Ground-based particulate matter (PM) samplers, an XeF Raman lidar operating in the framework of the European Aerosol Research Lidar Network (EARLINET), and a sun/sky radiometer operating in the framework of the Aerosol Robotic Network (AERONET) ...

V. Bellantone; I. Carofalo; F. De Tomasi; M. R. Perrone; M. Santese; A. M. Tafuro; A. Turnone

2008-08-01T23:59:59.000Z

302

"!# $&%(')0' 1324 5 4768)9@ AB!C6A9760806 'D' EFHGD8A9IQP CRH'D  

E-Print Network (OSTI)

$PyD&HxoD$r5H)H$notpµpo8$¯«oup¯pnzC $oRps$noRqoD$nuoR«oRSzpt`vu #pxoD&%$so y $U"op²pow&g$ y{ 9IHI(o¤xe9oRp2QH

Paris-Sud XI, Université de

303

Kinetics of nonisothermal adsorption by biporous adsorbents. Communication 5. Analytical description of the temperature curves and determination of mass- and heat-transfer parameters  

SciTech Connect

The authors have presented an analytical description of the temperature and kinetic curves for adsorbent granules in the form of plates, and they have proposed methods for the determination of the mass- and heat-transfer parameters based on experimental temperature curves. In the case of the Xe-CaA system the adsorption process is controlled by the external heat transfer.

Bezus, A.G.; Voloshchuk, A.M.; Gorlov, V.A.; Dubinin, M.M.; Zikanova, A.; Kochirzhik, M.

1987-01-10T23:59:59.000Z

304

Atomic probes of surface structure and dynamics. Technical progress report, September 15, 1991--September 14, 1992  

DOE Green Energy (OSTI)

The following were studied: New semiclassical method for scattering calculations, He atom scattering from defective Pt surfaces, He atom scattering from Xe overlayers, thermal dissociation of H{sub 2} on Cu(110), spin flip scattering of atoms from surfaces, and Car-Parrinello simulations of surface processes.

Heller, E.J.; Jonsson, H.

1992-12-31T23:59:59.000Z

305

Microfluidic gas-flow profiling using remote-detection NMR  

E-Print Network (OSTI)

and dispersion measurements. A pres- surized hyperpolarized xenon gas mixture containing 0.3% NMR-active 129Xe [1. The amount of axial dispersion as the gas flows within the enlarged section of the chip is immediately shown in A over all travel times. (C) Three dispersion curves for gas originating at different z

Pines, Alexander

306

Labeling of indocyanine green with carrier-free iodine-123  

DOE Patents (OSTI)

The method of labeling indocyanine green (ICG) with carrier-free iodine-123 comprising the steps of condensing xenon-123 on crystals of ICG followed by permitting decay of the .sup.123 Xe a sufficient length of time to produce .sup.123 I-electronically excited ions and atoms which subsequently label ICG.

Ansari, Azizullah N. (Mount Sinai, NY); Lambrecht, Richard M. (East Quogue, NY); Redvanly, Carol S. (Upton, NY); Wolf, Alfred P. (East Setauket, NY)

1976-01-01T23:59:59.000Z

307

Vibrational relaxation in COHe collisions: Sensitivity to interaction potential and details of quantum calculations  

E-Print Network (OSTI)

that have kinetic energies less than some particular cutoff energy, Ewf , and for the potential rep work we used Ewf =18.40 Ry, 14.06 Ry, 14.06 Ry, 16.73 Ry, 14.06 Ry, and 16.73 Ry were used to study Xe

Krems, Roman

308

Improved ?-? Coincidence Detector For Radioxenon Detection  

Science Conference Proceedings (OSTI)

The Automated Radio-xenon Analyzer/Sampler (ARSA), built by Pacific Northwest National Laboratory (PNNL), can collect and detect several radioxenon isotopes. ARSA is very sensitive to 133Xe, 131mXe, 133mXe and 135Xe due to the compact high efficiency ?-? coincidence detector it uses. For this reason it is an excellent treaty monitoring and environmental sampling device. Although the system is shown to be both robust and reliable, based on several field tests, it is also complex due to a detailed photomultiplier tube gain matching regime. This complexity is a problem from a maintenance and quality assurance/quality control (QA/QC) standpoint. To reduce these issues a simplified ??? coincident detector has been developed. A comparison of three different well detectors has been completed. In addition, a new plastic scintillator gas cell was constructed. The new simplified detector system has been demonstrated to equal or better performance compared with the original ARSA design in spectral resolution and efficiency and significantly easier to setup and calibrate.

Cooper, Matthew W.; Carman, April J.; Hayes, James C.; Heimbigner, Tom R.; Hubbard, Charles W.; Litke, Kevin E.; McIntyre, Justin I.; Morris, Scott J.; Ripplinger, Michael D.; Suarez, Reynold

2005-08-31T23:59:59.000Z

309

Slow waves in fractures ?lled with viscous ?uid  

1 e x P1 2 z 1e kx P1 2 z eikxx, 15 1 1 B 1 e kx S1 2 z xe x 1 2 z eikx 16 insidethelayerand x 2 A 2e kx sign z 1 P2 2 eikx, 17 2 kB 2e x sign z 1 S2 2 eikxx 18 ...

310

ARGONNE NATIONAL LABORATORY 9700 South Cass Avenue, Argonne Illinois 60439  

E-Print Network (OSTI)

. Reference herein to any specific commercial product, process, or service by trade name, trademark, and condensation and deposition due to various heat sources: direct laser/particle beam, debris and target for the rarefied chamber gas (0.21 torr Xe). 5 #12;3. Calculation Methods Hydrodynamic calculations were performed

Harilal, S. S.

311

Performance Characterization for Fusion Co-design Applications  

E-Print Network (OSTI)

fusion is a long-term solution for producing electrical power for the world, and the large thermonuclear international device (ITER) being constructed will produce net energy and a path to fusion energy provided solvers. Our evaluation on a petascale Cray XE6 platform focuses on profiling these simulations at scale

Oliker, Leonid

312

Symbols for the Chemical Elements  

Science Conference Proceedings (OSTI)

...Ag Sodium Na Strontium Sr Sulfur S Tantalum Ta Technetium Tc Tellurium Te Terbium Tb Thallium Tl Thorium Th Thulium Tm Tin Sn Titanium Ti Tungsten W Uranium U Vanadium V Xenon Xe Ytterbium Yb Yttrium Y Zinc Zn Zirconium Zr...

313

Preprint (December 8, 2012), to be published in the Eur. Phys. J. D. Multiple echoes due to distant dipolar fields in NMR of hyperpolarized  

E-Print Network (OSTI)

in solid 3 He, numerous experiments exploring the effects of distant dipolar fields in liquids have been rePreprint (December 8, 2012), to be published in the Eur. Phys. J. D. Multiple echoes due to distant temperatures as low as 10 mK for 129 Xe or 10 µK for 3 He, and the echoes originate from the distant dipolar

314

Preprint (January 20, 2013), to be published in the Eur. Phys. J. D. Multiple echoes due to distant dipolar fields in NMR of hyperpolarized  

E-Print Network (OSTI)

in solid 3 He, numerous experiments exploring the effects of distant dipolar fields in liquids have been rePreprint (January 20, 2013), to be published in the Eur. Phys. J. D. Multiple echoes due to distant temperatures as low as 10 mK for 129 Xe or 10 µK for 3 He, and the echoes originate from the distant dipolar

Paris-Sud XI, Université de

315

ccsd00002995, NMR instabilities and spectral clustering in laser-polarized liquid xenon  

E-Print Network (OSTI)

ccsd­00002995, version 1 ­ 3 Oct 2004 NMR instabilities and spectral clustering in laser in NMR experiments, we have performed low #12;eld NMR on laser-polarized liquid 129 Xe, with nuclear polarization of up to 6%. Contrary to conven- tional NMR results, we #12;nd that instabilities develop after

316

Status of EXO-200  

E-Print Network (OSTI)

EXO-200 is the first phase of the Enriched Xenon Observatory (EXO) experiment, which searches for neutrinoless double beta decay in 136Xe to measure the mass and probe the Majorana nature of the neutrino. EXO-200 consists of 200 kg of liquid Xe enriched to 80% in 136Xe in an ultra-low background TPC. Energy resolution is enhanced through the simultaneous collection of scintillation light using Large Area Avalanche Photodiodes (LAAPD's) and ionization charge. It is being installed at the WIPP site in New Mexico, which provides a 2000 meter water-equivalent overburden. EXO-200 will begin taking data in 2009, with the expected two-year sensitivity to the half-life for neutrinoless double beta decay of 6.4 10^25 years. According to the most recent nuclear matrix element calculations, this corresponds to an effective Majorana neutrino mass of 0.13 to 0.19 eV. It will also measure the two neutrino mode for the first time in 136Xe.

Ackerman, Nicole

2009-01-01T23:59:59.000Z

317

Status of EXO-200  

E-Print Network (OSTI)

EXO-200 is the first phase of the Enriched Xenon Observatory (EXO) experiment, which searches for neutrinoless double beta decay in 136Xe to measure the mass and probe the Majorana nature of the neutrino. EXO-200 consists of 200 kg of liquid Xe enriched to 80% in 136Xe in an ultra-low background TPC. Energy resolution is enhanced through the simultaneous collection of scintillation light using Large Area Avalanche Photodiodes (LAAPD's) and ionization charge. It is being installed at the WIPP site in New Mexico, which provides a 2000 meter water-equivalent overburden. EXO-200 will begin taking data in 2009, with the expected two-year sensitivity to the half-life for neutrinoless double beta decay of 6.4 10^25 years. According to the most recent nuclear matrix element calculations, this corresponds to an effective Majorana neutrino mass of 0.13 to 0.19 eV. It will also measure the two neutrino mode for the first time in 136Xe.

Nicole Ackerman

2009-09-09T23:59:59.000Z

318

NMR-Based Biosensing with Optimized Delivery of Polarized 129  

E-Print Network (OSTI)

to handle the sample to refresh LE 129Xe after an observation pulse depletes polarization. With this new can be opened and closed in a programmable way for flow control. Here, pneumatically actuated pinch detection can be addressed in a fundamental manner by means of the recently developed NMR remote detection

Pines, Alexander

319

Oak Ridge 25URC Tandem Accelerator 2008 SNEAP Lab Report  

Science Conference Proceedings (OSTI)

During FY 2008, the 25URC operated for slightly over 3,000 research hours. The radioactive species {sup 80}Ge and {sup 17,18}F accounted for 763 of these hours. This included an experiment using {sup 17}F which was only possible due to an improvement of a factor of 50 in beam intensity over our previous facility record. Twenty stable beam species were provided this year. Operation for the experimental program was at terminal potentials from 2.02 to 23.8 MV. Approximately 200 hours of conditioning were done to return the machine to operation after tank openings. There were six tank openings during the year: three scheduled for general maintenance and three unscheduled. Two of the unscheduled openings were required to correct shorting rod issues and the other was to reestablish communication with one of the major dead sections. On July 28, an event happened that caused all accelerators at the Holifield Radioactive Ion Beam Facility (HRIBF) to suspend operation. At approximately 8 AM on that Monday, during operations with approximately 12 {micro}A of 50-MeV protons on a uranium carbide target, delivering neutron-rich {sup 81}Zn beam to the new Low-energy Radioactive Ion Beam Spectroscopy Station (LeRIBSS), a radiological control technician (RCT) reported higher than normal radiation levels just outside the shield door to the IRIS1 vault (the room in which RIBs are produced at HRIBF). The measured dose rate equivalent was 4 mrem/hr. The presence of radiological contamination on the floor just outside the shield door was subsequently noted, as was the possible presence of airborne radioactivity. These observations were reported to facility management. Accelerators were put in standby immediately and the building evacuated. The event was subsequently declared a laboratory operational emergency. Parts of the building were cleared for reentry to collect belongings on Monday afternoon. The entire building was cleared for reoccupation on Tuesday morning after a detailed radiological survey found no contamination outside the shielded vaults. No decontamination was required. No individual received any detectable radiological dose as a result of this event. The 25URC tandem accelerator was given permission to resume operation with stable beams in early September, but radioactive ion production is still not allowed. Subsequent analysis indicated a release that consisted entirely of noble gasses (Xe and Kr isotopes). We believe we have identified two unrelated failures, one associated with the HVAC system and the other with the roughing system exhaust which accounts for both the escape of noble gasses into the IRIS1 vault and their migration outside the vault. An investigation team report is expected by October 24. At that time, corrective actions will be determined and the path to future radioactive ion beam production will be known. The break from operations allowed a few upgrades to be implemented. The most notable was the installation and commissioning of a SNICS ion source purchased from National Electrostatics Corporation (NEC). The SNICS replaced the old Alton/Aarhus source that we have used for many years. An ANU style gas cathode holder was purchased also but has not yet been implemented. The first beams have been produced by the source and the biggest problem encountered was reducing the beam for very low current experiments. A new power supply for the injection magnet was installed during this period also. Radioactive ion beam (RIB) development at the High Power Target Laboratory (HPTL) has been delayed this year while installing the platforms, conduits and equipment for the second Injector for Radioactive Ion Species (IRIS2) which is co-located with the HPTL facility. Therefore, the majority of development activities have been performed at the two off-line ion source test facilities (ISTF1 and ISTF2) and the On-Line Test Facility (OLTF). Both test facilities have been developing systems which will eventually be used with IRIS2. Two new tunable Ti:Sapphire lasers have been ordered for continuing development of an ion source

Meigs, Martha J [ORNL; Juras, Raymond C [ORNL

2011-01-01T23:59:59.000Z

320

Automatic Test Case Generation Using Multi-protocol Test Method Soo-in Lee, Yongbum Park, and Myungchul Kim  

E-Print Network (OSTI)

Automatic Test Case Generation Using Multi-protocol Test Method Soo-in Lee, Yongbum Park, mckim}@icu.ac.kr Abstract - A method for testing multi-protocol implementation under test (IUT) with a single test suite has been proposed in the literature. It tests a multi-protocol IUT in an integrated way

Lee, Ben

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


321

COLOR CONSTANCY How Temporal Cues Can Aid  

E-Print Network (OSTI)

Sciences Re- search Council; Contract grant number: S08656; Centro de Fi´sica da Universidade do Minho. Perception 1996;25S:104. 27. Ru¨ttiger L, Braun DI, Gegenfurtner KR, Petersen D, Scho¨nle P, Sharpe LT

Foster, David H.

322

NOAA ARL Monthly Activity Report Richard S. Artz, Acting Director  

E-Print Network (OSTI)

.S. Climate Reference Network 12. Urban Dispersion -- New York City Program 13. Air Quality Forecast Model as well as real-time air quality index conditions for over 300 cities across the United States generated by nuclear fission and released into the atmosphere in fuel rod reprocessing. Concentrations of Kr

323

SITE SURVEILLANCE AND MAINTENANCE PROGRAM FOR PALOS PARK  

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

N *ct I I rs '4) k0 In In P.1 0% 0% 03 oN I ON In kr) CO ON I ON ON .4 In CO '43 CO 0 tcl 140 co co No 43 Its %o Aft NNNNNNNN rNi IN " -13 It% 3.. N N . N 4 N. IN 4-4 C4 113...

324

Academic GuidebookAcademic Guidebook Graduate StudentsGraduate Students  

E-Print Network (OSTI)

: http://graduate.yonsei.ac.kr February 2013 #12;CONTENTS Academic Calendar for Spring 2013 1 General/12 ~ 2/18 Course Enrollment & Miscellaneous Fee Payment Period 2/18 Deadline for Re-admission Application 2013-1 2/21 ~ 2/28 Current Graduate Students Registration 2/25 February 2013 Graduation Ceremony 2

Lee, In-Kwon

325

Oblique, Stratified Winds about a Shelter Fence. Part I: Measurements  

Science Conference Proceedings (OSTI)

Wind statistics were measured using cup and sonic anemometers, placed upwind and downwind from a porous plastic windbreak fence (height h = 1.25 m, length Y = 114 m, resistance coefficient kr0 = 2.4, and porosity p = 0.45) standing on otherwise ...

John D. Wilson

2004-08-01T23:59:59.000Z

326

Electromagnetic interferences from plasmas generated in meteoroids impacts  

E-Print Network (OSTI)

Submitted to Europhysics Letters. It is shown that the plasma, generated during an impact of a meteoroid with an artificial satellite, can produce electromagnetic radiations below the microwave frequency range. These interferences can disturb the regular satellite operations. Pacs 96.50.Kr: Meteors and meteoroids. Pacs 52.50.Lp: Plasma production and heating by shock waves and compression.

Luigi Foschini

1998-01-01T23:59:59.000Z

327

Pulsed power considerations for electron beam pumped krypton fluoride lasers for inertial confinement fusion applications  

SciTech Connect

The Los Alamos National Laboratory inertial confinement fusion (ICF) program is developing the krypton-fluoride excimer laser for use as an ICF driver. The KrF laser has a number of inherent characteristics that make it a promising driver candidate, such as short wavelength (0.25 {mu}m), broad bandwidth to target (>100 cm{sup {minus}1}), pulse-shaping with high dynamic range, and the potential for high overall efficiency (>5%) and repetitive operation. The large KrF laser amplifiers needed for ICF drivers are electron-beam pumped. A key issue for all laser ICF drivers is cost, and a leading cost component of a KrF laser driver is associated with the pulsed power and electron diode. Therefore, the efficient generation of electron beams is a high priority. The Los Alamos ICF program is investigating pulsed-power and diode designs and technologies to further the development of affordable KrF laser ICF drivers. 12 refs., 8 figs.

Rose, E.A.; McDonald, T.E.; Rosocha, L.A.; Harris, D.B.; Sullivan, J.A. (Los Alamos National Lab., NM (USA)); Smith, I.D. (Pulse Sciences, Inc., San Leandro, CA (USA))

1991-01-01T23:59:59.000Z

328

Objectively measured physical activity in pregnancy: a study in obese and overwieght women.  

E-Print Network (OSTI)

:543-548. 25. Borodulin KM, Evenson KR, Wen F, Herring AH, Benson AM: Physical Activity Patterns during Pregnancy. Medicine and Science in Sports and Exercise 2008, 40:1901-1908. 26. Lof M, Forsum E: Activity pattern and energy expenditure due to physical...

McParlin, Catherine; Robson, Stephen C; Tennant, Peter W G; Besson, Herve; Rankin, Judith; Adamson, Ashley J; Pearce, Mark S; Bell, Ruth

2010-11-29T23:59:59.000Z

329

K'-Theory of a Local Ring of Finite Cohen-Macaulay Type.  

E-Print Network (OSTI)

We study the K'-theory of a CM Henselian local ring R of finite Cohen-Macaulay type. We first describe a long exact sequence involving the groups $K_i'(R)$ and the K-groups of certain other rings, including the Auslander algebra. By examining the terms and maps in the sequence, we obtain information about K'(R).

Viraj Navkal

330

Qualitative spatiotemporal representation and reasoning: a computational perspective  

Science Conference Proceedings (OSTI)

Although there has always been a temptation in KR to set the sights either too low (and provide only a data structuring facility with little or no inference) or too high (and provide a full theorem proving facility), this paper argues for the rich world ...

Frank Wolter; Michael Zakharyaschev

2003-01-01T23:59:59.000Z

331

Dynamic Reconfiguration of Photovoltaic Energy Harvesting System in Hybrid Electric Vehicles  

E-Print Network (OSTI)

Dynamic Reconfiguration of Photovoltaic Energy Harvesting System in Hybrid Electric Vehicles Yanzhi, xuelin, pedram}@usc.edu, 2 {naehyuck}@elpl.snu.ac.kr ABSTRACT Photovoltaic (PV) energy harvesting system is a promising energy source for battery replenishment in hybrid electric vehicles (HEVs.) The PV cell array

Pedram, Massoud

332

Capital Cost-Aware Design and Partial Shading-Aware Architecture Optimization of a Reconfigurable Photovoltaic System  

E-Print Network (OSTI)

Photovoltaic System Yanzhi Wang, Xue Lin, and Massoud Pedram University of Southern California Los Angeles, CA Seoul, Korea 151-744 {jmkim, naehyuck}@elpl.snu.ac.kr Abstract-- Photovoltaic (PV) systems are often to the current partial shading pattern. The reconfigurable PV panel architecture integrates every PV cell

Pedram, Massoud

333

Near-Optimal, Dynamic Module Reconfiguration in a Photovoltaic System to Combat Partial Shading Effects  

E-Print Network (OSTI)

Near-Optimal, Dynamic Module Reconfiguration in a Photovoltaic System to Combat Partial Shading}@elpl.snu.ac.kr, pedram@usc.edu ABSTRACT Partial shading is a serious obstacle to effective utilization of photovoltaic-parallel connected cells. This paper presents modified PV cell structures with integrated switches, imbalanced cell

Pedram, Massoud

334

Online Fault Detection and Tolerance for Photovoltaic Energy Harvesting Systems  

E-Print Network (OSTI)

Online Fault Detection and Tolerance for Photovoltaic Energy Harvesting Systems Xue Lin 1 , Yanzhi, yanzhiwa, dizhu, pedram}@usc.edu, 2 naehyuck@elpl.snu.ac.kr ABSTRACT Photovoltaic energy harvesting systems (PV systems) are subject to PV cell faults, which decrease the efficiency of PV systems and even

Pedram, Massoud

335

New Reactor Neutrino Experiments besides Double-CHOOZ  

E-Print Network (OSTI)

Several new reactor neutrino experiments are being considered to measure the parameter theta-13. The current plans for Angra, Braidwood, Daya Bay, KASKA and KR2DET are reviewed. A case is made that, together with Double-CHOOZ, a future world program should include at least three such experiments.

Maury Goodman

2005-01-21T23:59:59.000Z

336

New Reactor Neutrino Experiments besides Double-CHOOZ  

E-Print Network (OSTI)

Several new reactor neutrino experiments are being considered to measure the parameter ?13. The current plans for Angra, Braidwood, Daya Bay, KASKA and KR2DET are reviewed. A case is made that, together with Double-CHOOZ, a future world program should include at least three such experiments. 1. Introduction and Remarks

M. Goodman A

2005-01-01T23:59:59.000Z

337

Ortho n+1 - Optimization Online  

E-Print Network (OSTI)

Oct 12, 2012 ... [22] K.R. Fowler, J.P. Reese, C.E. Kees, J.E. Dennis Jr., C.T. Kelley, C.T. Miller, C. Audet, A.J.. Booker, G. Couture, R.W. Darwin, M.W. Farthing,...

338

Association for Students and Postdocs at BNL, ASAP  

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

CrossTalks Sign up here if you would like to present a CrossTalk: https:docs.google.comformsd1ln4jyX4SkdyhAs4BFlJ6H1Jmy2fdHCAKCumr-qKr0Boviewform "Designing and Giving a Good...

339

Resonance Raman Study of I2 -Intercalated Single-Walled Carbon Nanotubes  

Science Conference Proceedings (OSTI)

We conducted resonance Raman studies on the iodine-intercalated bundles of single-walled carbon nanotubes (SWNTs). The Raman spectra obtained using the 647.1-nm line of a Kr-ion laser indicate that I2 intercalation affects the electronic ... Keywords: I $_2$-intercalation, Raman spectroscopy, resonance Raman, single-walled carbon nanotubes

V. M. Nguyen; I. S. Yang; Y. Jung; S. -J. Kim; J. Oh; W. Yi

2007-01-01T23:59:59.000Z

340

Electronic structure of aluminum nitride: Theory and experiment S. Loughin and R. H. French  

E-Print Network (OSTI)

. Slack General Electric Corporate Research & Development Center, I River Road, Schenectudy, New York of a vacuum ultraviolet (VIJV) study of single crystal and polycrystalline AlN over the range 4-40 e crystal (W201), with a thermal conductivity of 275 W m -' K-r grown by a modified Bridgman tech- nique,r6

French, Roger H.

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


341

Electronic energy transfer between state selected metastable argon atoms and ground state krypton atoms  

E-Print Network (OSTI)

1007 Electronic energy transfer between state selected metastable argon atoms and ground state that the relative populations of the N2 (C, 3nu) product vibrational and rotational substates were dependent,0) atoms to ground state Kr atoms, which also shows large differences between the two metastable Ar states

Paris-Sud XI, Université de

342

Ocean Turbulence. Part II: Vertical Diffusivities of Momentum, Heat, Salt, Mass, and Passive Scalars  

Science Conference Proceedings (OSTI)

A Reynolds stressbased model is used to derive algebraic expressions for the vertical diffusivities K?(? = m, h, s) for momentum, heat, and salt. The diffusivities are expressed as K?(R?, N, RiT, ?)in terms of the density ratio R? = ?s?S/?z(...

V. M. Canuto; A. Howard; Y. Cheng; M. S. Dubovikov

2002-01-01T23:59:59.000Z

343

A-2007 Site environmental report appenDiX a: GloSSarY  

E-Print Network (OSTI)

Kr kryptonite kwH kilowatt hours LDR Land Disposal Restriction LED light emitting diode LEED and Operations Compliance Assurance Process TCE* trichloroethylene TCLP toxicity characteristic leaching) ­ Growing public awareness and concern for controlling water pollution led to enactment of the Federal Water

Homes, Christopher C.

344

A-2006 Site environmental report appenDiX a: GloSSarY  

E-Print Network (OSTI)

Kr kryptonite kwH kilowatt hours LDR Land Disposal Restriction LED light emitting diode LEED and Operations Compliance Assurance Process TCE* trichloroethylene TCLP toxicity characteristic leaching) ­ Growing public awareness and concern for controlling water pollution led to enactment of the Federal Water

Homes, Christopher C.

345

A-2005 Site environmental report appenDiX a: GloSSarY  

E-Print Network (OSTI)

(thousand)electronvolts Kr kryptonite kwH kilowatthours LDR LandDisposalRestriction LED lightemittingdiode LEED Leadershipin,1,1-trichloroethane TCAP TransportationSafetyandOperations ComplianceAssuranceProcess TCE* trichloroethylene TCLP) ­ Growing public awareness and concern for controlling water pollution led to enactment of the Federal Water

Homes, Christopher C.

346

Characterization of the Kootenai River Algae Community and Primary Productivity Before and After Experimental Nutrient Addition, 20042007 [Chapter 2, Kootenai River Algal Community Characterization, 2009 KTOI REPORT].  

DOE Green Energy (OSTI)

The Kootenai River ecosystem (spelled Kootenay in Canada) has experienced numerous ecological changes since the early 1900s. Some of the largest impacts to habitat, biological communities, and ecological function resulted from levee construction along the 120 km of river upstream from Kootenay Lake, completed by the 1950s, and the construction and operation of Libby Dam on the river near Libby Montana, completed in 1972. Levee construction isolated tens of thousands of hectares of historic functioning floodplain habitat from the river channel downstream in Idaho and British Columbia (B.C.) severely reducing natural biological productivity and habitat diversity crucial to large river-floodplain ecosystem function. Libby Dam greatly reduces sediment and nutrient transport to downstream river reaches, and dam operations cause large changes in the timing, duration, and magnitude of river flows. These and other changes have contributed to the ecological collapse of the post-development Kootenai River ecosystem and its native biological communities. In response to large scale loss of nutrients, experimental nutrient addition was initiated in the North Arm of Kootenay Lake in 1992, in the South Arm of Kootenay Lake in 2004, and in the Kootenai River at the Idaho-Montana border during 2005. This report characterizes baseline chlorophyll concentration and accrual (primary productivity) rates and diatom and algal community composition and ecological metrics in the Kootenai River for four years, one (2004) before, and three (2005 through 2007) after nutrient addition. The study area encompassed a 325 km river reach from the upper Kootenay River at Wardner, B.C. (river kilometer (rkm) 445) downstream through Montana and Idaho to Kootenay Lake in B.C. (rkm 120). Sampling reaches included an unimpounded reach furthest upstream and four reaches downstream from Libby Dam affected by impoundment: two in the canyon reach (one with and one without nutrient addition), a braided reach, and a meandering reach. The study design included 14 sampling sites: an upstream, unimpounded reference site (KR-14), four control (non-fertilized) canyon sites downstream from Libby Dam, but upstream from nutrient addition (KR-10 through KR-13), two treatment sites referred to collectively as the nutrient addition zone (KR-9 and KR-9.1, located at and 5 km downstream from the nutrient addition site), two braided reach sites (KR-6 and KR-7), and four meander reach sites (KR-1 through KR-4). A series of qualitative evaluations and quantitative analyses were used to assess baseline conditions and effects of experimental nutrient addition treatments on chlorophyll, primary productivity, and taxonomic composition and metric arrays for the diatom and green algae communities. Insufficient density in the samples precluded analyses of bluegreen algae taxa and metrics for pre- and post-nutrient addition periods. Chlorophyll a concentration (mg/m{sup 2}), chlorophyll accrual rate (mg/m{sup 2}/30d), total chlorophyll concentration (chlorophyll a and b) (mg/m{sup 2}), and total chlorophyll accrual rate (mg/m{sup 2}/30d) were calculated. Algal taxa were identified and grouped by taxonomic order as Cyanophyta (blue-greens), Chlorophyta (greens), Bacillariophyta (diatoms), Chrysophyta (goldens), and dominant species from each sample site were identified. Algal densities (number/ml) in periphyton samples were calculated for each sample site and sampling date. Principal Component Analysis (PCA) was performed to reduce the dimension of diatom and algae data and to determine which taxonomic groups and metrics were contributing significantly to the observed variation. PCA analyses were tabulated to indicate eigenvalues, proportion, and cumulative percent variation, as well as eigenvectors (loadings) for each of the components. Biplot graphic displays of PCA axes were also generated to characterize the pattern and structure of the underlying variation. Taxonomic data and a series of biological and ecological metrics were used with PCA for diatoms and algae. Algal metrics included

Holderman, Charlie [Kootenai Tribe of Idaho; Bonners Ferry, ID; Anders, Paul [Cramer Fish Sciences; Moscow, ID; Shafii, Bahman [Statistical Consulting Services; Clarkston, WA

2009-07-01T23:59:59.000Z

347

Publications  

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

Acceleration of Porous Media Applications on the Cray XE6 Platform Acceleration of Porous Media Applications on the Cray XE6 Platform Author(s): Kirsten M. Fagnan, Michael Lijewski, George Pau, Nicholas J. Wright | Download File: kfagnancug2011.pdf | pdf | 1.3 MB Petascale Pos-doc Program Reports and Slides Author(s): Alice Koniges | Download File: LBL-postdocsJune2010.pdf | pdf | 10 MB Download File: ARRA-Koniges-030316.ppt | ppt | 3.1 MB Calculation of RI-MP2 Gradient using Fermi GPUs May 24, 2010 | Author(s): J. Kim, A. Koniges, B. Smit, M. Head-Gordon | Source: 2010 MQM Conference | A numerical scheme for including surface tension effects in hydrodynamic simulation: a full Korteweg type model without parasitic flows Author(s): Wangyi Liu, John Barnard, Alice Koniges, David Eder, Nathan Masters, Aaron Fisher, Alex Friedman | Source: APS DPP 2012 |

348

Microsoft PowerPoint - 01XEPO-0_SystemOverview.pptx  

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

and Cray XE and Cray XE y y System Overview Customer Documentation and Training Overview Topics * System Overview - Cabinets, Chassis, and Blades - Compute and Service Nodes - Components of a Node Opteron Processor Opteron Processor SeaStar ASIC * Portals API Design Gemini ASIC * System Networks * Interconnection Topologies 10/18/2010 2 Cray Private Cray XT System 10/18/2010 3 Cray Private System Overview GigE X Y Z 10 GigE GigE Fibre SMW RAID Subsystem Channels Compute node Login node g Network node Boot /Syslog/Database nodes I/O and Metadata nodes 10/18/2010 4 Cray Private Cabinet - The cabinet contains three chassis, a blower for cooling, a power distribution unit (PDU), a control system (CRMS), and the compute and service blades (modules) - All components of the system are air cooled A blower in the bottom of the

349

Scintillation Response of Liquid Xenon to Low Energy Nuclear Recoils  

E-Print Network (OSTI)

Liquid Xenon (LXe) is expected to be an excellent target and detector medium to search for dark matter in the form of Weakly Interacting Massive Particles (WIMPs). Knowledge of LXe ionization and scintillation response to low energy nuclear recoils expected from the scattering of WIMPs by Xe nuclei is important for determining the sensitivity of LXe direct detection experiments. Here we report on new measurements of the scintillation yield of Xe recoils with kinetic energy as low as 10 keV. The dependence of the scintillation yield on applied electric field was also measured in the range of 0 to 4 kV/cm. Results are in good agreement with recent theoretical predictions that take into account the effect of biexcitonic collisions in addition to the nuclear quenching effect.

E. Aprile; K. L. Giboni; P. Majewski; K. Ni; M. Yamashita; R. Hasty; A. Manzur; D. N. McKinsey

2005-03-29T23:59:59.000Z

350

NERSC's Hopper Breaks Petaflops Barrier  

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

NERSC's Hopper Breaks NERSC's Hopper Breaks Petaflops Barrier NERSC's Hopper Breaks Petaflops Barrier Ranks 5th in the World November 14, 2010 Media Contact: Jon Bashor, jbashor@lbl.gov, 510-486-5849 hopper1.jpg NERSC's Cray XE6-Hopper BERKELEY, Calif.-The Department of Energy's National Energy Research Scientific Computing Center (NERSC), already one of the world's leading centers for scientific productivity, is now home to the fifth most powerful supercomputer in the world and the second most powerful in the United States, according to the latest edition of the TOP500 list, the definitive ranking of the world's top computers NERSC's newest supercomputer, a 153,408 processor-core Cray XE6 system, posted a performance of 1.05 petaflops (quadrillions of calculations per second) running the Linpack benchmark. In keeping with NERSC's tradition of

351

The NEXT experiment: A high pressure xenon gas TPC for neutrinoless double beta decay searches  

E-Print Network (OSTI)

Neutrinoless double beta decay is a hypothetical, very slow nuclear transition in which two neutrons undergo beta decay simultaneously and without the emission of neutrinos. The importance of this process goes beyond its intrinsic interest: an unambiguous observation would establish a Majorana nature for the neutrino and prove the violation of lepton number. NEXT is a new experiment to search for neutrinoless double beta decay using a radiopure high-pressure xenon gas TPC, filled with 100 kg of Xe enriched in Xe-136. NEXT will be the first large high-pressure gas TPC to use electroluminescence readout with SOFT (Separated, Optimized FuncTions) technology. The design consists in asymmetric TPC, with photomultipliers behind a transparent cathode and position-sensitive light pixels behind the anode. The experiment is approved to start data taking at the Laboratorio Subterr\\'aneo de Canfranc (LSC), Spain, in 2014.

D. Lorca; J. Martn-Albo; F. Monrabal; for the NEXT Collaboration

2012-10-15T23:59:59.000Z

352

Physics of Hall-effect thruster by particle model  

SciTech Connect

A realistic three-dimensional fully kinetic particle simulation of a Hall-effect thruster discharge has been developed. The model consists of a Particle-in-Cell methodology tracking electrons, Xe{sup +} and Xe{sup ++} ions in their selfconsistent electric field. A detailed secondary electron emission from lateral walls is also implemented in addition with electron-atom and electron-ion volume collisions. The model is able to capture the most relevant features of axial, radial and azimuthal behaviors of the start-up transient and steady state phases detecting inverted sheaths and azimuthal modulation in the acceleration region. The model has the potentiality to investigate the driving mechanisms at the origin of the electron anomalous cross-field transport.

Taccogna, Francesco; Minelli, Pierpaolo; Capitelli, Mario; Longo, Savino [Istituto di Metodologie Inorganiche e dei Plasmi (IMIP), CNR, via Amendola 122/D 70126 Bari (Italy); Dipartimento di Chimica, Universita degli Studi di Bari Aldo Moro, via Orabona 4 70126 Bari (Italy)

2012-11-27T23:59:59.000Z

353

Method for production of an isotopically enriched compound  

Science Conference Proceedings (OSTI)

A method is presented for producing and isolating an isotopically enriched compound of a desired isotope from a parent radionuclide. The method includes forming, or placing, a precipitate containing a parent radionuclide of the desired daughter isotope in a first reaction zone and allowing sufficient time for the parent to decay into the desired gaseous daughter radioisotope. The method further contemplates collecting the desired daughter isotope as a solid in a second reaction zone through the application of temperatures below the freezing point of the desired isotope to a second reaction zone that is connected to the first reaction zone. Specifically, a method is presented for producing isotopically enriched compounds of xenon, including the radioactive isotope Xe-131m and the stable isotope Xe-131.

Watrous, Matthew G.

2012-12-11T23:59:59.000Z

354

Trapping and diffusion of fission products in ThO2 and CeO2  

Science Conference Proceedings (OSTI)

The trapping and diffusion of Br, Rb, Cs and Xe in ThO2 and CeO{sub 2} have been studied using an Ab Initio total energy method in the local-density approximation of density functional theory. Fission products incorporated in cation mono-vacancy, cation-anion di-vacancy and Schottky defect sites are found to be stable, with the cation mono-vacancy being the preferred site in most cases. In both oxides, Rb and Cs are the most likely to be trapped, and Xe is more difficult to incorporate than other fission products. The energy barriers for migration of each species in ThO{sub 2} and CeO{sub 2} are also calculated. Alkali metals are relatively more mobile than other fission products, and bromine is the least mobile.

Xiao, Haiyan [University of Tennessee, Knoxville (UTK); Zhang, Yanwen [ORNL; Weber, William J [ORNL

2011-01-01T23:59:59.000Z

355

Dudley Herschbach: Chemical Reactions and Molecular Beams  

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

Dudley Herschbach: Dudley Herschbach: Chemical Reactions and Molecular Beams Resources with Additional Information Dudley Herschbach Courtesy of Texas A&M University As a co-recipient of the 1986 Nobel Prize in Chemistry, 'Dudley Herschbach was cited for "providing a much more detailed understanding of how chemical reactions take place". Using molecular beams, he studied elementary reactions such as K + CH3I and K + Br2, where it became possible to correlate reaction dynamics with the electronic structures of reactants and products. Exchanges proceeded through a persistent complex that lasted for many rotational periods, with product angular distributions reflecting the degree of reagent entanglement. Later this work was extended to H + Cl2, Cl + HI, halogen substitution reactions with vinyl and allyl halides, as well as such systems as Xe + Ar2 → XeAr + Ar. Herschbach has been a pioneer in the measurement and theoretical interpretation of vector properties of reaction dynamics, a field known as "molecular stereodynamics".

356

Spark protected ion source control and monitoring system at 1. 5 MV  

SciTech Connect

The Heavy Ion Fusion Program at Argonne National Laboratory utilizes a 1.5 Mv Xe ion preaccelerator. Reliable beam transport requires accurate measurements and precise control of various ion source parameters. A discussion is presented of the use of a multiplexed fiber optic data transmission system and low cost digital stepper motors for control functions. Techniques are discussed which allow TTL and CMOS semiconductor circuits to survive the destructive sparks which can occur in the 1.5 Mv preaccelerator. 5 refs.

Bogaty, J.M.; Zolecki, R.

1981-06-01T23:59:59.000Z

357

! "# $ % &' % # ()00 123 ...  

Science Conference Proceedings (OSTI)

... 8H425HtHiB eePPPe hufhE huF ve hFEfE 8HpHt 194B Phwu PwEE xE xu 8HpW2H4B hxf hEu Pv wu y751p416Y0H16)2H6 Spp4RQ576 UA cr sr ...

2005-02-10T23:59:59.000Z

358

Diffusive separation of noble gases and noble gas abundance patterns in sedimentary rocks  

SciTech Connect

The mechanisms responsible for noble gas concentrations, abundance patterns, and strong retentivity in sedimentary lithologies remain poorly explained. Diffusion-controlled fractionation of noble gases is modeled and examined as an explanation for the absolute and relative abundances of noble gases observed in sediments. Since the physical properties of the noble gases are strong functions of atomic mass, the individual diffusion coefficients, adsorption coefficients and atomic radii combine to impede heavy noble gas (Xe) diffusion relative to light noble gas (Ne) diffusion. Filling of lithic grains/half-spaces by diffusive processes thus produces Ne enrichments in the early and middle stages of the filling process with F(Ne) values similar to that observed in volcanic glasses. Emptying lithic grains/half-spaces produces a Xe-enriched residual in the late (but not final) stages of the process producing F(Xe) values similar to that observed in shales. 'Exotic but unexceptional' shales that exhibit both F(Ne) and F(Xe) enrichments can be produced by incomplete emptying followed by incomplete filling. This mechanism is consistent with literature reported noble gas abundance patterns but may still require a separate mechanism for strong retention. A system of labyrinths-with-constrictions and/or C-, Si-nanotubes when combined with simple adsorption can result in stronger diffusive separation and non-steady-state enrichments that persist for longer times. Enhanced adsorption to multiple C atoms inside C-nanotubes as well as dangling functional groups closing the ends of nanotubes can provide potential mechanisms for 'strong retention'. We need new methods of examining noble gases in rocks to determine the role and function of angstrom-scale structures in both the diffusive enrichment process and the 'strong retention' process for noble gas abundances in terrestrial rocks.

Torgersen, T.; Kennedy, B.M.; van Soest, M.C.

2004-06-14T23:59:59.000Z

359

The Chemical Elements  

Science Conference Proceedings (OSTI)

Table 1   Names and symbols for the elements (in alphabetical order)...Sodium (j) Na Strontium Sr Sulfur S Tantalum Ta Technetium Tc Tellurium Te Terbium Tb Thallium Tl Thorium Th Thulium Tm Tin (k) Sn Titanium Ti Tungsten (l) W Ununnilium Uun Unununium Uuu Uranium U Vanadium V Xenon Xe Ytterbium Yb Yttrium Y Zinc Zn Zirconium Zr (a) Symbol based on the Latin

360

A uGNI-Based Asynchronous Message-driven Runtime System for Cray Supercomputers with Gemini Interconnect  

SciTech Connect

Gemini as the network for new Cray XE/XT systems features low latency, high bandwidth and strong scalability. Its hardware support for remote direct memory access enables efficient implementation of the global address space programming languages. Although the Generic Network Interface (GNI) is designed to support message-passing applications, it is still challenging to attain good performance for applications written in alternative programming models, such as the message-driven programming model. In our earlier work we showed that CHARM++, an object-oriented message-driven programming model, scales up to the full Jaguar Cray machine. In this paper, we describe a general and light-weight asynchronous Low-level RunTime System (LRTS) for CHARM+, and its implementation on the uGNI software stack for Cray XE systems. Several techniques are presented to exploit the uGNI capability by reducing memory copy and registration overhead, taking advantage of persistent communication, and improving intra-node communication. Our micro-benchmark results demonstrate that the uGNI-based runtime system outperforms the MPI-based implementation by up to 50% in terms of message latency. For communication intensive applications such as N-Queens, this implementation scales up to 15,360 cores of a Cray XE6 machine and is 70% faster than an MPI-based implementation. In molecular dynamics application NAMD, the performance is also considerably improved by as high as 18%.

Sun, Yanhua [University of Illinois, Urbana-Champaign; Zheng, Gengbin [University of Illinois, Urbana-Champaign; Olson, Ryan M [Cray, Inc.; Jones, Terry R [ORNL; Kale, Laxmikant V [University of Illinois, Urbana-Champaign

2012-01-01T23:59:59.000Z

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


361

Primordial helium recombination III: Thomson scattering, isotope shifts, and cumulative results  

E-Print Network (OSTI)

Upcoming precision measurements of the temperature anisotropy of the cosmic microwave background (CMB) at high multipoles will need to be complemented by a more complete understanding of recombination, which determines the damping of anisotropies on these scales. This is the third in a series of papers describing an accurate theory of HeI and HeII recombination. Here we describe the effect of Thomson scattering, the $^3$He isotope shift, the contribution of rare decays, collisional processes, and peculiar motion. These effects are found to be negligible: Thomson and $^3$He scattering modify the free electron fraction $x_e$ at the level of several $\\times 10^{-4}$. The uncertainty in the $2^3P^o-1^1S$ rate is significant, and for conservative estimates gives uncertainties in $x_e$ of order $10^{-3}$. We describe several convergence tests for the atomic level code and its inputs, derive an overall $C_\\ell$ error budget, and relate shifts in $x_e(z)$ to the changes in $C_\\ell$, which are at the level of 0.5% at $\\ell =3000$. Finally, we summarize the main corrections developed thus far. The remaining uncertainty from known effects is $\\sim 0.3%$ in $x_e$.

Eric R. Switzer; Christopher M. Hirata

2007-02-06T23:59:59.000Z

362

Effects of surface chemistry on the porous structure of coal. Quarterly technical progress report, October 1995--December 1995  

SciTech Connect

The primary objective of this work is to use {sup 129}Xe NMR to characterize the microporous structure of coals. As an aide in this characterization, which is by no means straightforward, another objective is to combine this technique with volumetric adsorption techniques and track the effect of controlled opening of the micropores in a microporous carbon by oxygen chemisorption/desorption. The primary goal of the NMR work is to measure the micropore sizes in coal; more broadly, it is to better tailor the {sup 129}Xe NMR method for use with coal, and to investigate other ways it may be used to describe pore structure in coal, with emphasis on determining whether micropores in coal are connected or isolated. In terms of the primary objectives of the project, the {sup 129}Xe NMR spectra with pressure variation have been obtained for two more coals, completing this task for the sample set of six coals. In terms of the broad objectives of the project, examination of the influence on the xenon signal of packing the powdered coal has been undertaken. These data are of potential value for the determination of whether the porosity is open or closed. Results of powder density and related experiments will be used in the final interpretation of our current data, including the determination of whether, in the NMR of loose powdered, the chemical shift is indicative of the ``true`` gas-solid interaction.

Anderson, S.A.; Radovic, L.R.; Hatcher, P.G.

1995-12-31T23:59:59.000Z

363

The Radiochemical Analysis of Gaseous Samples (RAGS) apparatus for nuclear diagnostics at the National Ignition Facility (invited)  

SciTech Connect

The Radiochemical Analysis of Gaseous Samples (RAGS) diagnostic apparatus was recently installed at the National Ignition Facility (NIF). Following a NIF shot, RAGS is used to pump the gas load from the NIF chamber for purification and isolation of the noble gases. After collection, the activated gaseous species are counted via gamma spectroscopy for measurement of the capsule areal density and fuel-ablator mix. Collection efficiency was determined by injecting a known amount of {sup 135}Xe into the NIF chamber, which was then collected with RAGS. Commissioning was performed with an exploding pusher capsule filled with isotopically enriched {sup 124}Xe and {sup 126}Xe added to the DT gas fill. Activated xenon species were recovered post-shot and counted via gamma spectroscopy. Results from the collection and commissioning tests are presented. The performance of RAGS allows us to establish a noble gas collection method for measurement of noble gas species produced via neutron and charged particle reactions in a NIF capsule.

Shaughnessy, D. A.; Velsko, C. A.; Jedlovec, D. R.; Yeamans, C. B.; Moody, K. J.; Tereshatov, E.; Stoeffl, W.; Riddle, A. [Lawrence Livermore National Laboratory, PO Box 808, L-236, Livermore, California 94551 (United States)

2012-10-15T23:59:59.000Z

364

The Radiochemical Analysis of Gaseous Samples (RAGS) Apparatus for Nuclear Diagnostics at the National Ignition Facility  

SciTech Connect

The RAGS (Radiochemical Analysis of Gaseous Samples) diagnostic apparatus was recently installed at the National Ignition Facility. Following a NIF shot, RAGS is used to pump the gas load from the NIF chamber for purification and isolation of the noble gases. After collection, the activated gaseous species are counted via gamma spectroscopy for measurement of the capsule areal density and fuel-ablator mix. Collection efficiency was determined by injecting a known amount of {sup 135}Xe into the NIF chamber, which was then collected with RAGS. Commissioning was performed with an exploding pusher capsule filled with isotopically enriched {sup 124}Xe and {sup 126}Xe added to the DT gas fill. Activated xenon species were recovered post-shot and counted via gamma spectroscopy. Results from the collection and commissioning tests are presented. The performance of RAGS allows us to establish a noble gas collection method for measurement of noble gas species produced via neutron and charged particle reactions in a NIF capsule.

Shaughnessy, D A; Velsko, C A; Jedlovec, D R; Yeamans, C B; Moody, K J; Tereshatov, E; Stoeffl, W; Riddle, A

2012-05-11T23:59:59.000Z

365

Method for the simultaneous preparation of radon-211, xenon-125, xenon-123, astatine-211, iodine-125 and iodine-123  

DOE Patents (OSTI)

The invention relates to a practical method for commercially producing radiopharmaceutical activities and, more particularly, relates to a method for the preparation of about equal amount of Radon-211 (/sup 211/Rn) and Xenon-125 (/sup 125/Xe) including a one-step chemical procedure following an irradiation procedure in which a selected target of Thorium (/sup 232/Th) or Uranium (/sup 238/U) is irradiated. The disclosed method is also effective for the preparation in a one-step chemical procedure of substantially equal amounts of high purity /sup 123/I and /sup 211/At. In one preferred arrangement of the invention almost equal quantities of /sup 211/Rn and /sup 125/Xe are prepared using a onestep chemical procedure in which a suitably irradiated fertile target material, such as thorium-232 or uranium-238, is treated to extract those radionuclides from it. In the same one-step chemical procedure about equal quantities of /sup 211/At and /sup 123/I are prepared and stored for subsequent use. In a modified arrangement of the method of the invention, it is practiced to separate and store about equal amounts of only /sup 211/Rn and /sup 125/Xe, while preventing the extraction or storage of the radionuclides /sup 211/At and /sup 123/I.

Mirzadeh, S.; Lambrecht, R.M.

1985-07-01T23:59:59.000Z

366

HiR Thermal Testing Results  

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

4 4 position specimen # specimen description (test conditions: cold side -18°C, warm side 21°C) date + time 100 mm from head TC center of glass TC 100 mm from sill TC upper IR line average lower IR line average complete IR line average left 6 triple, 2 sputtered low-e glass layers, uncoated acrylic center layer in grooved spacer, Kr 3/11/05 11:40 18.10 17.80 18.13 17.44 17.82 right 7 triple, 2 sputtered low-e glass layers, uncoated acrylic center layer top angled toward cold side, Kr 17.80 13.74 16.90 14.44 15.77 - Back to Summary - - Back to Summary - - Back to Summary - delta T line average delta T 100mm from head delta T center of glass delta T 100mm from sill ambient high ambient low ambient average six surface average

367

Tracing Noble Gas Radionuclides in the Environment  

E-Print Network (OSTI)

Trace analysis of radionuclides is an essential and versatile tool in modern science and technology. Due to their ideal geophysical and geochemical properties, long-lived noble gas radionuclides, in particular, 39Ar (t1/2 = 269 yr), 81Kr (t1/2 = 2.3x10^5 yr) and 85Kr (t1/2 = 10.8 yr), have long been recognized to have a wide range of important applications in Earth sciences. In recent years, significant progress has been made in the development of practical analytical methods, and has led to applications of these isotopes in the hydrosphere (tracing the flow of groundwater and ocean water). In this article, we introduce the applications of these isotopes and review three leading analytical methods: Low-Level Counting (LLC), Accelerator Mass Spectrometry (AMS) and Atom Trap Trace Analysis (ATTA).

P. Collon; W. Kutschera; Z. -T. Lu

2004-02-11T23:59:59.000Z

368

HiR Thermal Testing Results  

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

5 5 position specimen # specimen description (test conditions: cold side -18°C, warm side 21°C) date + time 100 mm from head TC center of glass TC 100 mm from sill TC upper IR line average lower IR line average complete IR line average left 6 triple, 2 sputtered low-e glass layers, uncoated acrylic center layer in grooved spacer, Kr 3/15/05 13:40 18.08 17.75 17.91 16.84 17.43 right 8 triple/quad, 2 sputtered low-e layers, 2 layer teflon center insert clinging in center, Kr 18.26 17.58 18.05 17.23 17.67 - Back to Summary - - Back to Summary - - Back to Summary - delta T line average delta T 100mm from head delta T center of glass delta T 100mm from sill ambient high ambient low ambient average six surface average

369

Deciphering the genetic basis for polyketide variation among mycobacteria producing mycolactones  

E-Print Network (OSTI)

of MlsB from pMUM003. To test this hypothesis, we performed South- ern hybridisation analysis of BACs containing either mlsA or mlsB from pMUM001, pMUM002 and pMUM003 with probes for either the KR-A or KR-B domain, and as pre- dicted, Southern analysis... . For example, the 15 KS domains share > 99.1% nucleotide identity over 1257 nts, which translates to only nine variable amino acid residues among 419 aa. There are three types of domains (LM-KS, AT-I and AT-II) that have 100% intra-species nucleotide identity...

Pidot, Sacha J; Hong, Hui; Seemann, Torsten; Porter, Jessica L; Yip, Marcus J; Men, Artem; Johnson, Matthew; Wilson, Peter; Davies, John K; Leadlay, Peter F; Stinear, Timothy P

2008-10-07T23:59:59.000Z

370

Total scattering cross sections and interatomic potentials for neutral hydrogen and helium on some noble gases  

DOE Green Energy (OSTI)

Measurements of energy-dependent scattering cross sections for 30 to 1800 eV D incident on He, Ne, Ar, and Kr, and for 40 to 850 eV He incident on He, Ar, and Kr are presented. They are determined by using the charge-exchange efflux from the Princeton Large Torus tokamak as a source of D or He. These neutrals are passed through a gas-filled scattering cell and detected by a time-of-flight spectrometer. The cross section for scattering greater than the effective angle of the apparatus (approx. =20 mrad) is found by measuring the energy-dependent attenuation of D or He as a function of pressure in the scattering cell. The interatomic potential is extracted from the data.

Ruzic, D.N.; Cohen, S.A.

1985-04-01T23:59:59.000Z

371

The Role of Standards in MHK Modeling and Testing  

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

TC - 114 Summary TC - 114 Summary Neil Rondorf NREL Sensors and Measurement Workshop - July2012 Energy | Environment | National Security | Health | Critical Infrastructure IEC/TC - 114 Member Countries Energy | Environment | National Security | Health | Critical Infrastructure Project Teams Project Team Title Convener PT62600-1 Terminology Mr. Ghanashyam Ranjitkar (CA) PT62600-2 Design requirements for marine energy systems Dr Robert Paasch (Interim) (US) PT62600-10 Assessment of mooring system for marine energy converters Mr. Mann-Eung Kim (KR) PT62600-20 Guideline for design assessment of Ocean Thermal Energy Conversion (OTEC) system Mr. Mann-Eung Kim (KR) PT62600-30 Electrical power quality requirements for wave, tidal and other water current energy converters

372

Dr. Jacob R. "Solid oxide fuel cells from a  

E-Print Network (OSTI)

#12;Bloom Energy - (Univ. Arizona), Dr. KR Sridhar ( Bloom Energy CEO) NASA SOFC; Morgan Stanley SOFC Group, KIER #12;100 kW SOFC System 100 kW : 4 x 25 kW - Each module : 25 kW - OneW Module SOFC Group, KIER #12;Bloom Energy SOFC (kW) () (kWh) CO2 (/) Google 400kW, Jul. 2008

New South Wales, University of

373

Phosphorus doping of 4H SiC by liquid immersion excimer laser irradiation  

SciTech Connect

Phosphorus doping of 4H SiC is performed by KrF excimer laser irradiation of 4H SiC immersed in phosphoric acid. Phosphorus is incorporated to a depth of a few tens of nanometers at a concentration of over 10{sup 20}/cm{sup 3} without generating significant crystal defects. Formation of a pn junction diode with an ideality factor of 1.06 is demonstrated.

Ikeda, Akihiro; Nishi, Koji; Ikenoue, Hiroshi; Asano, Tanemasa [Graduate School of Information Science and Electrical Engineering, Kyushu University, Fukuoka 819-0395 (Japan)] [Graduate School of Information Science and Electrical Engineering, Kyushu University, Fukuoka 819-0395 (Japan)

2013-02-04T23:59:59.000Z

374

Chemical Science  

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

Chemical Science Chemical Science Compton double ionization of helium in the region of the cross-section maximum B. Krässig, R.W. Dunford, D.S. Gemmell, S. Hasegawa, E.P. Kanter, H. Schmidt-Böcking, W. Schmitt, S.H. Southworth, Th. Weber, and L. Young Crystal structure analysis of microporous Na16Nb12.8Ti3.2O44.8(OH)3.2l8H2O and Na/Nb/Zr/O/H2O phases A. Tripathi, J. Parise, M. Nyman, T.M. Nenoff, and W. Harrison Double K-photoionization of heavy atoms R.W. Dunford, D.S. Gemmell, E.P. Kanter, B. Krässig, and S.H. Southworth Forward-backward asymmetries of atomic photoelectrons S.H. Southworth, B. Krässig, E.P. Kanter, J.C. Bilheux, R.W. Dunford, D.S. Gemmell, S. Hasegawa, and L. Young In situreduction of various iron oxides to form high-surface-area Fe-metal catalysts as studied by high-resolution powder diffraction

375

Fission modes of mercury isotopes  

E-Print Network (OSTI)

Background: Recent experiments on beta-delayed fission in the mercury-lead region and the discovery of asym- metric fission in 180 Hg [1] have stimulated theoretical interest in the mechanism of fission in heavy nuclei. Purpose: We study fission modes and fusion valleys in 180 Hg and 198 Hg to reveal the role of shell effects in pre-scission region and explain the experimentally observed fragment mass asymmetry and its variation with A. Methods: We use the self-consistent nuclear density functional theory employing Skyrme and Gogny energy density functionals. Results: The potential energy surfaces in multi-dimensional space of collective coordinates, including elongation, triaxiality, reflection-asymmetry, and necking, are calculated for 180 Hg and 198 Hg. The asymmetric fission valleys - well separated from fusion valleys associated with nearly spherical fragments - are found in in both cases. The density distributions at scission configurations are studied and related to the experimentally observed mass splits. Conclusions: The energy density functionals SkM\\ast and D1S give a very consistent description of the fission process in 180 Hg and 198 Hg. We predict a transition from asymmetric fission in 180 Hg towards more symmetric distribution of fission fragments in 198 Hg. For 180 Hg, both models yield 100 Ru/80 Kr as the most probable split. For 198 Hg, the most likely split is 108 Ru/90 Kr in HFB-D1S and 110 Ru/88 Kr in HFB-SkM\\ast.

M. Warda; A. Staszczak; W. Nazarewicz

2012-05-25T23:59:59.000Z

376

Fission Modes of Mercury Isotopes  

Science Conference Proceedings (OSTI)

Background: Recent experiments on -delayed fission in the mercury-lead region and the discovery of asymmetric fission in 180Hg [A. N. Andreyev et al., Phys. Rev. Lett. 105, 252502 (2010)] have stimulated theoretical interest in the mechanism of fission in heavy nuclei. Purpose: We study fission modes and fusion valleys in 180Hg and 198Hg to reveal the role of shell effects in the prescission region and explain the experimentally observed fragment mass asymmetry and its variation with A. Methods: We use the self-consistent nuclear density functional theory employing Skyrme and Gogny energy density functionals. Results: The potential energy surfaces in multidimensional space of collective coordinates, including elongation, triaxiality, reflection-asymmetry, and necking, are calculated for 180Hg and 198Hg. The asymmetric fission valleys well separated from fusion valleys associated with nearly spherical fragments are found in both cases. The density distributions at scission configurations are studied and related to the experimentally observed mass splits. Conclusions: The energy density functionals SkM and D1S give a very consistent description of the fission process in 180Hg and 198Hg. We predict a transition from asymmetric fission in 180Hg toward a more symmetric distribution of fission fragments in 198Hg. For 180Hg, both models yield 100Ru/80Kr as the most probable split. For 198Hg, the most likely split is 108Ru/90Kr in HFB-D1S and 110Ru/88Kr in HFB-SkM .

Warda, M. [Maria Curie-Sk?odowska University-Poland; Staszczak, A. [Maria Curie-Sklodowska University; Nazarewicz, Witold [UTK/ORNL/University of Warsaw

2012-01-01T23:59:59.000Z

377

Nuclear Data Sheets for A = 71  

SciTech Connect

The evaluated spectroscopic data are presented for experimentally known nuclides of mass 71 (Mn,Fe,Co,Ni,Cu,Zn,Ga,Ge,As,Se,Br,Kr). Excited-state data are nonexistent for {sup 71}Mn, {sup 71}Fe, {sup 71}Co and {sup 71}Kr. Significant new data have been added since the last evaluation of A=71 nuclides by M. Bhat (1993Bh02). Excited states are now known in {sup 71}Ni and {sup 71}Cu, and enhanced information about high-spin excitations is available for {sup 71}Ga, {sup 71}As and {sup 71}Br. The decay schemes of radioactive isotopes {sup 71}Mn and {sup 71}Fe are not known at all, and those for {sup 71}Co, {sup 71m}Ni and {sup 71}Kr are not known well. For the decay of {sup 71}Cu, {sup 71g}Ni, and {sup 71}Br, extensive data are available, but in the opinion of the evaluators the decay schemes still seem incomplete. This work supersedes earlier full evaluations of A=71 published by 1988Bh01, 1979Ke06 and 1973Al33, and the last one published in 'update' mode by 1993Bh02.

Abusaleem, Khalifeh [Physics Department, University of Jordan, Amman, Jordan 11942 (Jordan); Singh, Balraj [Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1 (Canada)

2011-01-15T23:59:59.000Z

378

Higgs Boson Mass and Electroweak-Gravity Hierarchy from Dynamical Gauge-Higgs Unification in the Warped Spacetime  

E-Print Network (OSTI)

Dynamical electroweak symmetry breaking by the Hosotani mechanism in the Randall-Sundrum warped spacetime is examined, relations among the W-boson mass (m_W), the Kaluza-Klein mass scale (M_{KK}), and the Higgs boson mass (m_H) being derived. It is shown that M_{KK}/m_W = (2 pi kR)^{1/2} (pi/theta_W) and m_H /m_W = 0.058 kR (pi/theta_W), where k^2, R, and theta_W are the curvature and size of the extra-dimensional space and the Wilson line phase determined dynamically. For typical values kR = 12 and theta_W = (0.2 to 0.4) pi, one finds that M_{KK} = (1.7 to 3.5) TeV, k = (1.3 to 2.6) x 10^{19} GeV, and m_H = (140 to 280) GeV.

Yutaka Hosotani; Mitsuru Mabe

2005-03-02T23:59:59.000Z

379

Optical isotope shift and hyperfine structure measurements in preparation of the ultra-sensitive detection of krypton atoms using stepwise laser excitation and field ionization  

E-Print Network (OSTI)

Within the scope of the ultra sensitive detection project the operation of the collinear fast beam laser spectroscopy apparatus and data acquisition was learned and optimized with respect to the reduction of stray laser light and the charge exchange process. Major contributions to fluctuations and drifts in the measurements have been investigated. The present data is evaluated using only the relativistically correct expressions with Microcal ORIGIN and the IMSL subroutines to perform a least squares fit to the hyperfine structure data when evaluating the hyperfine structure constants A and B. The results are the hyperfinestructure constants and isotope shifts in two transitions from the 5s'[1/2]0' , IS3 , and three transitions from the 5s[3/212' , I S5 , metastable state of krypton. The results of the isotope shift measurements in the 892 nm line of Kr have not been published previously. For the further development of the trace detection of Kr isotopes the work resulted in the construction and installation of the necessary ion-optics and detectors. Changes have been prepared as a result of the ongoing measurements. These are quasicollinear excitation of the Kr beam, avoiding optical pumping and stark shifts, shortening the distance between optical excitation and field ionization and foremost a two order of magnitude improvement of the vacuum conditions in the region the Rydberg atoms traverse by differential pumping. The overall project goal of two step resonant excitation and field ionization seems to be in close reach .

Lassen, Jens

1996-01-01T23:59:59.000Z

380

HiR Thermal Testing Results  

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

Drawings Drawings specimen number made by description layer 1 layer 2 layer 3 gas gap (in) spacer height (in) overall thickness (in) glass (mm) center layer (mm) gap (mm) calc. thick (mm) 1 Alpen 9/16" double with two pyrolytic low-e coatings, Ar 0.125" pyro none 0.125" pyro Ar 0.563 0.563 0.81 3.18 none 14.29 20.6 4 Alpen low-e suspended film with two pyrolytic low-e coatings 0.125" pyro TC88 0.125" pyro Kr 0.344 2 X 0.344 0.94 3.18 0.10 8.73 23.8 6 LBL parallel acrylic center layer in grooved spacer 0.118" card170 0.06" acrylic 0.118" card170 Kr 0.375 0.813 1.05 3 1.60 9.53 26.6 7 LBL angled acrylic center layer in groved spacer 0.118" card170 0.06" acrylic 0.118" card170 Kr variable 0.813 1.05 3 1.60 variable 26.6

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381

Density Functional Theory Calculations of Mass Transport in UO2  

SciTech Connect

In this talk we present results of density functional theory (DFT) calculations of U, O and fission gas diffusion in UO{sub 2}. These processes all impact nuclear fuel performance. For example, the formation and retention of fission gas bubbles induce fuel swelling, which leads to mechanical interaction with the clad thereby increasing the probability for clad breach. Alternatively, fission gas can be released from the fuel to the plenum, which increases the pressure on the clad walls and decreases the gap thermal conductivity. The evolution of fuel microstructure features is strongly coupled to diffusion of U vacancies. Since both U and fission gas transport rates vary strongly with the O stoichiometry, it is also important to understand O diffusion. In order to better understand bulk Xe behavior in UO{sub 2{+-}x} we first calculate the relevant activation energies using DFT techniques. By analyzing a combination of Xe solution thermodynamics, migration barriers and the interaction of dissolved Xe atoms with U, we demonstrate that Xe diffusion predominantly occurs via a vacancy-mediated mechanism. Since Xe transport is closely related to diffusion of U vacancies, we have also studied the activation energy for this process. In order to explain the low value of 2.4 eV found for U migration from independent damage experiments (not thermal equilibrium) the presence of vacancy clusters must be included in the analysis. Next we investigate species transport on the (111) UO{sub 2} surface, which is motivated by the formation of small voids partially filled with fission gas atoms (bubbles) in UO{sub 2} under irradiation. Surface diffusion could be the rate-limiting step for diffusion of such bubbles, which is an alternative mechanism for mass transport in these materials. As expected, the activation energy for surface diffusion is significantly lower than for bulk transport. These results are further discussed in terms of engineering-scale fission gas release models. Finally, oxidation of UO{sub 2} and the importance of cluster formation for understanding thermodynamic and kinetic properties of UO{sub 2+x} are investigated.

Andersson, Anders D. [Los Alamos National Laboratory; Dorado, Boris [CEA; Uberuaga, Blas P. [Los Alamos National Laboratory; Stanek, Christopher R. [Los Alamos National Laboratory

2012-06-26T23:59:59.000Z

382

Macroinvertebrate Abundance and Biomass: 2007 Data, BPA-51; Preliminary Report, February 10, 2009..  

DOE Green Energy (OSTI)

Four Excel files containing information on the 2007 macroinvertebrate data were initially provided to Statistical Consulting Services (SCS) by EcoAnalysts on 1/27/2009. These data files contained information on abundance and biomass data at the level of taxonomic groups. The data were subsequently reformatted and compiled, and aggregated for analysis by SCS. All descriptions and analyses below relate to this compiled data. Computations were carried out separately for each site over all sample periods. Basic summary information for both the abundance and biomass data is presented in Print Out No.2. The 14 sites varied widely in their minimum, mean, maximum and variance values. The number of observations ranged from 10 to 18. Some large abundance values (abundance > 40,000) were noted for sites KR6 and KR13. A more detailed summary of each site is given in Print Out No.3. Site KR3, for example, had a mean abundance of 6914 with a sample size of 17. The variance was 4591991 and the standard error of the mean was 1643. The skewness value, a measure of symmetry for the frequency distribution, was moderately large at 1.29 indicating an asymmetric distribution. Biomass for KR3 had a mean value of 0.87 g/m{sup 2} with 17 observations. The variance was 0.8872 and the standard error was 0.228 g/m{sup 2}. Skewness for biomass was also high at 1.29. Further examination of the quantiles and frequency plots for abundance and biomass also indicate considerable skewness. The stem and leaf diagram (frequency plot) for abundance in KR3 shows most of the data centered on smaller values with a few very large counts. The distribution for biomass has a similar pattern. Statistical tests for normality are significant for both response variables in KR3, thus, the hypothesis that the data originates from a symmetric normal distribution is rejected. Because sample size estimation and statistical inference assume normally distributed data, a transformation of the data is required prior to further analysis. As was the case for previous years, the natural logarithm was chosen as a transformation to mitigate distributional skewness. Abundance and biomass for the remaining sites were also notably skewed, therefore, these data were also log transformed prior to analysis. Summary information for the transformed data (referred to as L-abun and L-bio for abundance and biomass, respectively) are given in Print Out No.4. For site KR3, the logarithmic transformation reduced skewness value for biomass to -0.66. The distributions of abundance and biomass in the other sites also generally showed improvement as well. Hence, all subsequent statistical analyses reported here will be based on the log transformed data.

Holderman, Charles

2009-02-10T23:59:59.000Z

383

bxxx025-tab.dvi  

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

BARYONS BARYONS Σ BARYONS Σ BARYONS Σ BARYONS (S = -1, I = 1) (S = -1, I = 1) (S = -1, I = 1) (S = -1, I = 1) Σ + = uus, Σ 0 = uds, Σ - = dds Σ + Σ + Σ + Σ + I (J P ) = 1( 1 2 + ) Mass m = 1189.37 ± 0.07 MeV (S = 2.2) Mean life τ = (0.8018 ± 0.0026) × 10 -10 s cτ = 2.404 cm (τ Σ + - τ Σ - ) / τ Σ + = (- 0.6 ± 1.2) × 10 -3 Magnetic moment µ = 2.458 ± 0.010 µ N (S = 2.1) (µ Σ + + µ Σ - ) µ Σ + = 0.014 ± 0.015 Γ Σ + → n ℓ + ν /Γ Σ - → n ℓ - ν < 0.043 Decay parameters Decay parameters Decay parameters Decay parameters p π 0 α 0 = - 0.980 + 0.017 - 0.015 " φ 0 = (36 ± 34) ◦ " γ 0 = 0.16 [a] " ∆ 0 = (187 ± 6) ◦ [a] n π + α + = 0.068 ± 0.013 " φ + = (167 ± 20) ◦ (S = 1.1) " γ + = - 0.97 [a] " ∆ + = (- 73 + 133 - 10 ) ◦ [a] p γ α γ = - 0.76 ± 0.08 p Σ + DECAY MODES Σ + DECAY MODES Σ + DECAY MODES Σ + DECAY MODES Fraction (Γ i /Γ) Confidence level (MeV /c) p π 0 (51.57± 0.30) % 189 n π + (48.31± 0.30) % 185 p γ ( 1.23±

384

TITAN'S BULK COMPOSITION CONSTRAINED BY CASSINI-HUYGENS: IMPLICATION FOR INTERNAL OUTGASSING  

SciTech Connect

In the present report, by using a series of data gathered by the Cassini-Huygens mission, we constrain the bulk content of Titan's interior for various gas species (CH{sub 4}, CO{sub 2}, CO, NH{sub 3}, H{sub 2}S, Ar, Ne, Xe), and we show that most of the gas compounds (except H{sub 2}S and Xe) initially incorporated within Titan are likely stored dissolved in the subsurface water ocean. CO{sub 2} is likely to be the most abundant gas species (up to 3% of Titan's total mass), while ammonia should not exceed 1.5 wt%. We predict that only a moderate fraction of CH{sub 4}, CO{sub 2}, and CO should be incorporated in the crust in the form of clathrate hydrates. By contrast, most of the H{sub 2}S and Xe should be incorporated at the base of the subsurface ocean, in the form of heavy clathrate hydrates within the high-pressure ice layer. Moreover, we show that the rocky phase of Titan, assuming a composition similar to CI carbonaceous chondrites, is a likely source for the noble gas isotopes ({sup 40}Ar, {sup 36}Ar, {sup 22}Ne) that have been detected in the atmosphere. A chondritic core may also potentially contribute to the methane inventory. Our calculations show that a moderate outgassing of methane containing traces of neon and argon from the subsurface ocean would be sufficient to explain the abundance estimated by the Gas Chromatograph Mass Spectrometer. The extraction process, implying partial clathration in the ice layers and exsolvation from the water ocean, may explain why the {sup 22}Ne/{sup 36}Ar ratio in Titan's atmosphere appears higher than the ratio in carbonaceous chondrites.

Tobie, G. [Universite de Nantes, LPGNantes, UMR 6112, F-44322 Nantes (France); Gautier, D. [LESIA, Observatoire de Paris, F-92195 Meudon Cedex (France); Hersant, F. [Universite Bordeaux, LAB, UMR 5804, F-33270, Floirac (France)

2012-06-20T23:59:59.000Z

385

Fortran MPI/OpenMP example output  

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

Getting Started Getting Started Configuration Programming Running Jobs Overview Interactive Jobs Batch Jobs Example Batch Scripts Using aprun Queues and Policies Monitoring Jobs Using OpenMP with MPI Memory Considerations Runtime Tuning Options Running Large Scale Jobs Trouble Shooting and Error Messages Completed Jobs How Usage Is Charged File Storage and I/O Software and Tools Debugging and profiling Performance and Optimization Cray XE Documentation Cluster Compatibility Mode Carver PDSF Genepool Testbeds Retired Systems Data & File Systems Network Connections Queues and Scheduling Job Logs & Analytics Training & Tutorials Software Accounts & Allocations Policies Data Analytics & Visualization Data Management Policies Science Gateways User Surveys NERSC Users Group User Announcements

386

Sequential fissions of heavy nuclear systems  

E-Print Network (OSTI)

In Xe+Sn central collisions from 12 to 20 MeV/A measured with the INDRA 4$\\pi$ multidetector, the three-fragment exit channel occurs with a significant cross section. In this contribution, we show that these fragments arise from two successive binary splittings of a heavy composite system. Strong Coulomb proximity effects are observed in the three-fragment final state. By comparison with Coulomb trajectory calculations, we show that the time scale between the consecutive break-ups decreases with increasing bombarding energy, becoming compatible with quasi-simultaneous multifragmentation above 18 MeV/A.

Diego Gruyer; J. D. Frankland; E. Bonnet; M. Boisjoli; A. Chbihi; L. Manduci; P. Marini; K. Mazurek; P. N. Nadtochy

2013-08-24T23:59:59.000Z

387

I  

Gasoline and Diesel Fuel Update (EIA)

I 0'^TM^^^^^^^^^^^^^^^^^BBn~fi^H(iA w _ __--^^^^^^^^^^r I A ^^^^^^H^^^^fnffA^ ^^^^^^^^^^5!ii53^^^^^^^^^H~~~~f ^^^^^^^^^^^*^^^^^^^^^^^^^1~~~~A ^^^^^^^^^^^^^j^^^^^^^^^^^^^^^^^ ^^^^^^^^^HB|^B^^BI^^^^^^^^^H ^^^^^^^^^^^^^^^H xe^ ^^^^^^A^ This publication is available from the Superintendent of Documents, U.S. Government Printing Office (GPO). Ordering information and purchase of this and other Energy Information Administration (EIA) publications may be obtained from the GPO or the EIA's National Energy Information Center (NEIC). Questions on energy statistics should be directed to the NEIC. Addresses and telephone numbers appear below. National Energy Information Center, El-20 Energy Information Administration Forrestal Building Room 1 F-048 Washington, D C 20585

388

Using Hybrid MPI and OpenMP on Hopper and Franklin  

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

Running Jobs Running Jobs Overview Interactive Jobs Batch Jobs Example Batch Scripts Using aprun Queues and Policies Monitoring Jobs Using OpenMP with MPI Memory Considerations Runtime Tuning Options Running Large Scale Jobs Trouble Shooting and Error Messages Completed Jobs How Usage Is Charged File Storage and I/O Software and Tools Debugging and profiling Performance and Optimization Cray XE Documentation Cluster Compatibility Mode Carver PDSF Genepool Testbeds Retired Systems Data & File Systems Network Connections Queues and Scheduling Job Logs & Analytics Training & Tutorials Software Accounts & Allocations Policies Data Analytics & Visualization Data Management Policies Science Gateways User Surveys NERSC Users Group User Announcements Help Operations for: Passwords &

389

Dedicated Supernova Detection by a Network of Neutral Current Spherical TPC's  

E-Print Network (OSTI)

Supernova neutrinos can easily be detected by a spherical gaseous TPC detector measuring very low energy nuclear recoils. The expected rates are quite large for a neutron rich target since the neutrino nucleus neutral current interaction yields a coherent contribution of all neutrons. As a matter of fact for a typical supernova at 10 kpc, about 1000 events are expected using a spherical detector of radius 4 m with Xe gas at a pressure of 10 Atm. A world wide network of several such simple, stable and low cost supernova detectors with a running time of a few centuries is quite feasible.

J. D. Vergados; Y. Giomataris

2005-11-16T23:59:59.000Z

390

Dedicated Supernova Detection by a Network of Neutral Current Spherical TPC's  

E-Print Network (OSTI)

Supernova neutrinos can easily be detected by a spherical gaseous TPC detector measuring very low energy nuclear recoils. The expected rates are quite large for a neutron rich target since the neutrino nucleus neutral current interaction yields a coherent contribution of all neutrons. As a matter of fact for a typical supernova at 10 kpc, about 1000 events are expected using a spherical detector of radius 4 m with Xe gas at a pressure of 10 Atm. A world wide network of several such simple, stable and low cost supernova detectors with a running time of a few centuries is quite feasible.

Vergados, J D

2005-01-01T23:59:59.000Z

391

New gas mixtures suitable for rare event detection using a Micromegas-TPC detector  

E-Print Network (OSTI)

The aim of the presented work was to develop further techniques based on a Micromegas-TPC, in order to reach a high gas gain with good energy resolution, and to search for gas mixtures suitable for rare event detection. This paper focuses on xenon, which is convenient for the search of neutrinoless double beta decay in 136 Xe. Conversely, a small admixture of xenon to CF 4 can reduce attachment in the latter. This gas mixture would be suitable for dark matter searches and the study of solar and reactor neutrinos. Various configurations of the Micromegas plane were investigated and are described.

L. Ounalli; J-L. Vuilleumier; D. Schenker; J-M. Vuilleumier

2008-10-02T23:59:59.000Z

392

Thermal bremsstrahlung probing the nuclear liquid-gas phase transition  

E-Print Network (OSTI)

We present the results of the analysis of the hard photon production in the $^{129}${Xe}+$^{\\rm nat}${Sn} at 50{\\it A} MeV system studied in the GANIL E300 experiment. The energy and angular hard photon distributions confirm the existence of a thermal component which follows the recently measured thermal bremsstrahlung systematics. Exploiting the performances of our complete detection system, consisting of TAPS and 3 charged particle multidetectors, we have also measured the hard photon multiplicity as a function of the charged particle multiplicity.

R. Ortega; D. d'Enterria; F. Fernandez; G. Martinez

2002-02-28T23:59:59.000Z

393

Source shape determination with directional fragment-fragment velocity correlations  

E-Print Network (OSTI)

Correlation functions, constructed from directional projections of the relative velocities of fragments, are used to determine the shape of the breakup volume in coordinate space. For central collisions of 129Xe + natSn at 50 MeV per nucleon incident energy, measured with the 4pi multi-detector INDRA at GSI, a prolate shape aligned along the beam direction with an axis ratio of 1:0.7 is deduced. The sensitivity of the method is discussed in comparison with conventional fragment-fragment velocity correlations.

A. Le Fevre; C. Schwarz; G. Auger; M. L. Begemann-Blaich; N. Bellaize; R. Bittiger; F. Bocage; B. Borderie; R. Bougault; B. Bouriquet; J. L. Charvet; A. Chbihi; R. Dayras; D. Durand; J. D. Frankland; E. Galichet; D. Gourio; D. Guinet; S. Hudan; P. Lautesse; F. Lavaud; R. Legrain; O. Lopez; J. Lukasik; U. Lynen; W. F. J. Mueller; L. Nalpas; H. Orth; E. Plagnol; E. Rosato; A. Saija; C. Sfienti; B. Tamain; W. Trautmann; A. Trzcinski; K. Turzo; E. Vient; M. Vigilante; C. Volant; B. Zwieglinski

2007-11-09T23:59:59.000Z

394

Charged-Particle Impact Ionization of Atoms  

Science Conference Proceedings (OSTI)

We have developed a hybrid method to treat charged-particle impact ionization of complex atoms and ions. The essential idea is to describe the interaction between a fast projectile and the target perturbatively, up to second order, while the initial bound state and the ejected-electron--residual-ion interaction can be handled via a convergent R-matrix with pseudo-states (close-coupling) expansion. Example results for ionization of the heavy noble gases (Ne-Xe) by positron and electron impact are presented. The general scheme for a distorted-wave treatment of ionization by heavy-particle impact is described.

Bartschat, Klaus; Guan Xiaoxu [Department of Physics and Astronomy, Drake University, Des Moines, IA 50311 (United States)

2008-08-08T23:59:59.000Z

395

High pressure heterogeneous catalysis in a low pressure ultrahigh vacuum environment. Summary of progress report, July 1, 1989--December 31, 1992  

DOE Green Energy (OSTI)

An apparatus was been developed which couples high resolution electron energy loss spectroscopy with molecular beam and scattering techniques. Exposure of Ni(111) to atomic H results in H embedded within the Ni lattice and a monolayer of H adsorbed on the surface. This surface-bound H was removed by an Xe atom beam. Subsequent exposure to CH{sub 4} results in dissociative adsorption, producing adsorbed CH{sub 3} and adsorbed H. Results documents a new mechanism for a surface reaction, a reaction between an adsorbed and a bulk species, and demonstrates the importance of bulk H as a reactant in a heterogeneous catalytic reaction.

Ceyer, S.T.

1992-12-31T23:59:59.000Z

396

High pressure heterogeneous catalysis in a low pressure ultrahigh vacuum environment  

DOE Green Energy (OSTI)

An apparatus was been developed which couples high resolution electron energy loss spectroscopy with molecular beam and scattering techniques. Exposure of Ni(111) to atomic H results in H embedded within the Ni lattice and a monolayer of H adsorbed on the surface. This surface-bound H was removed by an Xe atom beam. Subsequent exposure to CH[sub 4] results in dissociative adsorption, producing adsorbed CH[sub 3] and adsorbed H. Results documents a new mechanism for a surface reaction, a reaction between an adsorbed and a bulk species, and demonstrates the importance of bulk H as a reactant in a heterogeneous catalytic reaction.

Ceyer, S.T.

1992-01-01T23:59:59.000Z

397

High-Precision Cross Sections for Low-Energy Electron-Atom Collisions  

Science Conference Proceedings (OSTI)

We describe a recently developed B-spline R-matrix method for electron and photon collisions with atoms and ions. Using non-orthogonal sets of orbitals to construct the target description and to represent the scattering functions, this implementation of the close-coupling approach allows us to employ highly correlated target wavefunctions with relatively small configuration expansions. Example results from recent applications of the method for accurate calculations of low-energy electron scattering from He, Zn, Ne, Ar, Xe, and Fe+ are presented.

Bartschat, Klaus; Zatsarinny, Oleg [Department of Physics and Astronomy, Drake University, Des Moines, Iowa 50311 (United States)

2007-04-06T23:59:59.000Z

398

Performance of the AMS-02 Transition Radiation Detector  

E-Print Network (OSTI)

For cosmic particle spectroscopy on the International Space Station the AMS experiment will be equipped with a Transition Radiation Detector (TRD) to improve particle identification. The TRD has 20 layers of fleece radiator with Xe/CO2 proportional mode straw tube chambers. They are supported in a conically shaped octagon structure made of CFC-Al-honeycomb. For low power consumption VA analog multiplexers are used as front-end readout. A 20 layer prototype built from final design components has achieved proton rejections from 100 to 2000 at 90% electron efficiency for proton beam energies up to 250 GeV with cluster counting, likelihood and neural net selection algorithms.

P. v. Doetinchem; S. Fopp; W. Karpinski; T. Kirn; K. Luebelsmeyer; J. Orboeck; S. Schael; A. Schultz von Dratzig; G. Schwering; T. Siedenburg; R. Siedling; W. Wallraff; U. Becker; J. Burger; R. Henning; A. Kounine; V. Koutsenko; J. Wyatt

2006-08-29T23:59:59.000Z

399

Self-sustaining nuclear pumped laser-fusion reactor experiment  

DOE Green Energy (OSTI)

The features of a neutron feedback nuclear pumped (NFNP) laser-fusion reactor equipment were studied with the intention of establishing the feasibility of the concept. The NFNP laser-fusion concept is compared schematically to electrically pumped laser fusion. The study showed that, once a method of energy storage has been demonstrated, a self-sustaining fusion-fission hybrid reactor with a ''blanket multiplication'' of two would be feasible using nuclear pumped Xe F* excimer lasers having efficiencies of 1 to 2 percent and D-D-T pellets with gains of 50 to 100. (MHR)

Boody, F.P.; Choi, C.K.; Miley, G.H.

1977-01-01T23:59:59.000Z

400

Studies in Historia  

E-Print Network (OSTI)

Studies Historia In This dissertation is submitted for the degree of Doctor of Philosophy, by Eirikur Smari Sigurdarson Darwin College To my grandfather, Ein'kur Axel J6nsson 1919-2002. OA.~LOS' oO"TlS' T~S' LO"TopLaS' EO"XE IlU8Tj... of living nature, the sublunary world, in the cosmology of Aristotle and Theophrastus. In the Conclusion I briefly pull together some of the main threads of the dissertation. Introduction Alle Begriffe, in denen sich ein ganzer ProcefJ semiotisch...

Sigurarson, Eirkur Smri

2003-02-11T23:59:59.000Z

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


401

Three body kinematic endpoints in SUSY models with non-universal Higgs masses.  

E-Print Network (OSTI)

. Observation of three body endpoints in NUHM model Having derived the endpoints for the process depicted in figure 1, we now discuss a concrete physics example by performing a Monte Carlo study of the NUHM model described in section 2. 4.1 Event generation... , with |?| 150 GeV; The EmissT and jet requirements should be sufficient to ensure that the events would be triggered by ATLAS. For example, these events should pass both specialised Supersymmetry trigger (j70+xE70: 1...

Lester, Christopher G; Parker, Michael A; White, Martin J

402

Apparatus for preparing a solution of a hyperpolarized noble gas for NMR and MRI analysis  

DOE Patents (OSTI)

The present invention relates generally to nuclear magnetic resonance (NMR) techniques for both spectroscopy and imaging. More particularly, the present invention relates to methods in which hyperpolarized noble gases (e.g., Xe and He) are used to enhance and improve NMR and MRI. Additionally, the hyperpolarized gas solutions of the invention are useful both in vitro and in vivo to study the dynamics or structure of a system. When used with biological systems, either in vivo or in vitro, it is within the scope of the invention to target the hyperpolarized gas and deliver it to specific regions within the system.

Pines, Alexander (Berkeley, CA); Budinger, Thomas (Berkeley, CA); Navon, Gil (Ramat Gan, IL); Song, Yi-Qiao (Berkeley, CA); Appelt, Stephan (Waiblingen, DE); Bifone, Angelo (Rome, IT); Taylor, Rebecca (Berkeley, CA); Goodson, Boyd (Berkeley, CA); Seydoux, Roberto (Berkeley, CA); Room, Toomas (Albany, CA); Pietrass, Tanja (Socorro, NM)

2008-06-10T23:59:59.000Z

403

Spectral Phase Distribution Retrieval through Coherent Control of Harmonic Generation  

SciTech Connect

The temporal intensity distribution of the third harmonic of a Ti:sapphire laser generated in Xe gas is fully reconstructed from its spectral phase and amplitude distributions. The spectral phases are retrieved by cross correlating the fundamental laser frequency field with that of the third harmonic, in a three laser versus one harmonic photon coupling scheme. The third harmonic spectral amplitude distribution is extracted from its field autocorrelation. The measured pulse duration is found to be in agreement with that expected from lowest order perturbation theory both for unstretched and chirped pulses.

Papalazarou, E.; Charalambidis, D. [Foundation for Research and Technology - Hellas, Institute of Electronic Structure and Laser, PO Box 1527, GR711 10 Heraklion (Crete) (Greece); Department of Physics, University of Crete, PO Box 2208, GR71003 Heraklion (Crete) (Greece); Kovacev, M.; Tzallas, P.; Benis, E.P.; Kalpouzos, C. [Foundation for Research and Technology - Hellas, Institute of Electronic Structure and Laser, PO Box 1527, GR711 10 Heraklion (Crete) (Greece); Tsakiris, G. D. [Max-Planck-Institut fuer Quantenoptik, D-85748 Garching (Germany)

2006-04-28T23:59:59.000Z

404

Search for New Physics with Photons at the Tevatron  

E-Print Network (OSTI)

We report on a search for compositeness in ee+gamma events and a search for gauge-mediated supersymmetry in gamma+gamma+met events. We also report on two signature-based searches for anomalous production of gamma + gamma + X (where X=e, mu, gamma, met) and gamma + lepton + X. The analyses are based on 0.9--1.2 fb-1 of data from p-pbar collisions at sqrt(s)=1.96 TeV collected with the CDF and D0 detectors at the Fermilab Tevatron. No significant excess of data over the predicted background has been observed.

Shin-Shan Yu

2007-10-17T23:59:59.000Z

405

Diversity of transposable elements and repeats in a 600 kb region of the fly Calliphora vicina  

E-Print Network (OSTI)

, 104:520533. 9. Oliver KR, Greene WK: Transposable elements: powerful facilitators of evolution. BioEssays 2009, 31:703714. 10. Gonzalez J, Petrov DA: The adaptive role of transposable elements in the Drosophila genome. Gene 2009, 448:124133. 11... . Kumar A, Hirochika H: Applications of retrotransposons as genetic tools in plant biology. Trends Plant Sci 2001, 6:127134. 12. Hamon P, Duroy PO, Dubreuil-Tranchant C, Mafra DAlmeida Costa P, Duret C, Razafinarivo NJ, Couturon E, Hamon S, de Kochko A...

Negre, Brbara; Simpson, Pat

2013-04-03T23:59:59.000Z

406

Spectroscopic studies of hydrogen collisions  

DOE Green Energy (OSTI)

Low energy collisions involving neutral excited states of hydrogen are being studied with vacuum ultraviolet spectroscopy. Atomic hydrogen is generated by focusing an energetic pulse of ArF, KrF, or YAG laser light into a cell of molecular hydrogen, where a plasma is created near the focal point. The H{sub 2} molecules in and near this region are dissociated, and the cooling atomic hydrogen gas is examined with laser and dispersive optical spectroscopy. In related experiments, we are also investigating neutral H + O and H + metal {minus} atom collisions in these laser-generated plasmas.

Kielkopf, J.

1991-12-10T23:59:59.000Z

407

Spectroscopic studies of hydrogen collisions. Progress report  

DOE Green Energy (OSTI)

Low energy collisions involving neutral excited states of hydrogen are being studied with vacuum ultraviolet spectroscopy. Atomic hydrogen is generated by focusing an energetic pulse of ArF, KrF, or YAG laser light into a cell of molecular hydrogen, where a plasma is created near the focal point. The H{sub 2} molecules in and near this region are dissociated, and the cooling atomic hydrogen gas is examined with laser and dispersive optical spectroscopy. In related experiments, we are also investigating neutral H + O and H + metal {minus} atom collisions in these laser-generated plasmas.

Kielkopf, J.

1991-12-10T23:59:59.000Z

408

FINAL REPORT ON THE PINOT EXPERIMENT  

SciTech Connect

The Pinot Project was designed to provide some indication of the extent to which gases from a confined underground explosion in oil shale would migrate parallel to the bedding planes. At 0800 on Aug. 2, 1960, 946 lb of nitromethane was fired in shot hole No. 1. There was no visible damage to the mine adit or to any structure associated with cation of the extent to which gases from a confined underground explosion in oil shale would migrate parallel to the bedding planes. At 0800 on Aug. 2, 1960, 946 lb of nitromethane was fired in shot hole No. 1. There was no visible damage to the mine adit or to any stnucture associated with the workings. Gas samples collected from sampling holes near the shot hole were analyzed for Kr/sup 85/, which had been included with the nitromethane as a tracer. It appeared that the Kr/sup 85/ concentration in the samples out to 50 ft was more or less independent of space and time between +2 and +50 hr. Relativsly little Kr/sup 85/ was detected at 125 ft and none beyond. About (20 plus or minus 10)% of the Kr/sup 85/ escaped into ths adit. The results of the Pinot experiment cannot be extrapolated quantitatively to the case of a nuclear explosion in oil shale. Even if the structure at the Pinot site is typical of oil shale, the generation of a smaller quantity of noncondensible gases per unit energy in a nuclear explosion (as compared with a chemical explosion), the shonter time scale of the ensrgy release and the higher temperatares and pressures encountered will all have a definite influence on the effective containment distance. One can conclude, however, that, if the medium at the site of a potential nuclear experiment is similar to that at Pinot, the radioactive gases will not travel preferentially in directions parallel to the bedding planes, but rather will tend to expand mors or less spherically from the shot point. In other words, an explosion in oil shale designed not to vent in a direction perpendicular to the bedning planes will be just as tight parallel to the bedding planes. (auth)

Adelman, F.L.; Bacigalupi, C.M.; Momyer, F.F.

1960-12-27T23:59:59.000Z

409

High-resolution experiments and B-spline R-matrix calculations for elastic electron scattering from krypton  

SciTech Connect

In a joint experimental and theoretical effort, we carried out a detailed study of elastic electron scattering from Kr atoms. Absolute angle-differential cross sections for elastic electron scattering were measured over the energy range 0.3-9.8 eV with an energy width of about 13 meV at scattering angles between 0 deg. and 180 deg. Excellent agreement is obtained between our experimental data and predictions from a fully relativistic Dirac B-spline R-matrix (close-coupling) model that accounts for the atomic dipole polarizability through a specially designed pseudostate.

Zatsarinny, O.; Bartschat, K. [Department of Physics and Astronomy, Drake University, Des Moines, Iowa 50311 (United States); Allan, M. [Department of Chemistry, University of Fribourg, CH-1700 Fribourg (Switzerland)

2011-03-15T23:59:59.000Z

410

Micro-nano scale ripples on metallic glass induced by laser pulse  

SciTech Connect

A Zr{sub 47.7}Cu{sub 31}Ni{sub 9}Al{sub 12.3} bulk metallic glass was irradiated directly by KrF excimer laser pulses with wavelength 248 nm and duration 10 ns. Scanning electronic microscope photographs indicated that many ripples in micro-nano scale would be generated on the edge of the irradiated area under the action of the higher intensity laser pulse. Detailed observation demonstrated that the ripples exhibited fluidity and became closer and closer out from interior. Theoretical analysis revealed the formation mechanism of the ripples, including melting, subsequent propagation of capillary waves and final solidification.

Liu, W. D.; Ye, L. M. [LTCS and Department of Mechanics and Aerospace Engineering, College of Engineering, Peking University, Beijing 100871 (China); Liu, K. X. [LTCS and Department of Mechanics and Aerospace Engineering, College of Engineering, Peking University, Beijing 100871 (China); Center for Applied Physics and Technology, Peking University, Beijing 100871 (China)

2011-02-15T23:59:59.000Z

411

Fossil Fuel Carbon Dioxide Emissions Data and Data Plots from Project Vulcan  

DOE Data Explorer (OSTI)

Explore the Vulcan website for the Vulcan gridded data, methodological details, publications, plots and analysis.[Taken from "About Project Vulcan" at http://www.purdue.edu/eas/carbon/vulcan/index.php]Also, see the peer-reviewed paper that provides a "core" description for this project: Gurney, K.R., D. Mendoza, Y. Zhou, M Fischer, S. de la Rue du Can, S. Geethakumar, C. Miller (2009) The Vulcan Project: High resolution fossil fuel combustion CO2 emissions fluxes for the United States, Environ. Sci. Technol., 43, doi:10.1021/es900,806c.

Gurney, Kevin [PI and spokesperson for the Vulcan Collaboration

412

Synthesis of materials with infrared and ultraviolet lasers  

SciTech Connect

This paper discusses three divergent examples of synthesis of materials with lasers. The three techniques are: (1) infrared (CO/sub 2/) laser synthesis of silane (SiH/sub 4/) from disilane (Si/sub 2/H/sub 6/); (2) excimer (ArF) laser production of fine silicon powders from methyl- and chloro-substituted silanes; and, (3) excimer (KrF) laser production of fine metallic powders by laser ablation. The mechanism for each process is discussed along with some conclusions about the features of the laser radiation that enable each application. 19 refs., 12 figs., 2 tabs.

Lyman, J.L.

1988-01-01T23:59:59.000Z

413

A<ACD6B;GAQ=CD4Q  

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

AXe (3* e.AO AW:K e&T[ O"Q- W:OY d  ]L *aA <[YI ^Ae) IWA= YTWe 0T: Oe 4WTF W:M Xe3C >Ae %RS[:Ke2:YITO:Ke+O_IWTONAOY:Ke5TKH=ce %

414

 

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

Xenon gas (Xe) Xenon gas (Xe) Quantity Value Units Value Units Atomic number 54 Atomic mass 131.293(6) g mole-1 Specific gravity (20° C, 1 atm) 5.48E-03 g cm-3 Mean excitation energy 482.0 eV Minimum ionization 1.255 MeV g-1cm2 6.882E-03 MeV cm-1 Nuclear collision length 100.8 g cm-2 1.839E+04 cm Nuclear interaction length 172.1 g cm-2 3.139E+04 cm Pion collision length 125.0 g cm-2 2.279E+04 cm Pion interaction length 199.6 g cm-2 3.640E+04 cm Radiation length 8.48 g cm-2 1547. cm Critical energy 12.30 MeV (for e-) 11.91 MeV (for e+) Molière radius 14.63 g cm-2 2667. cm Plasma energy 1.37 eV Muon critical energy 232. GeV Melting point 161.4 K -111.8 C Boiling point @ 1 atm 165.1 K -108.0 C

415

Primordial helium recombination III: Thomson scattering, isotope shifts, and cumulative results  

E-Print Network (OSTI)

Upcoming precision measurements of the temperature anisotropy of the cosmic microwave background (CMB) at high multipoles will need to be complemented by a more complete understanding of recombination, which determines the damping of anisotropies on these scales. This is the third in a series of papers describing an accurate theory of HeI and HeII recombination. Here we describe the effect of Thomson scattering, the $^3$He isotope shift, the contribution of rare decays, collisional processes, and peculiar motion. These effects are found to be negligible: Thomson and $^3$He scattering modify the free electron fraction $x_e$ at the level of several $\\times 10^{-4}$. The uncertainty in the $2^3P^o-1^1S$ rate is significant, and for conservative estimates gives uncertainties in $x_e$ of order $10^{-3}$. We describe several convergence tests for the atomic level code and its inputs, derive an overall $C_\\ell$ error budget, and relate shifts in $x_e(z)$ to the changes in $C_\\ell$, which are at the level of 0.5% at ...

Switzer, E R; Switzer, Eric R.; Hirata, Christopher M.

2007-01-01T23:59:59.000Z

416

Evidence of the production of hot hydrogen atoms in RF plasmas by catalytic reactions between hydrogen and oxygen species  

E-Print Network (OSTI)

Selective H-atom line broadening was found to be present throughout the volume (13.5 cm ID x 38 cm length) of RF generated H2O plasmas in a GEC cell. Notably, at low pressures (ca. hot' with energies greater than 40 eV with a pressure dependence, but only a weak power dependence. The degree of broadening was virtually independent of the position studied within the GEC cell, similar to the recent finding for He/H2 and Ar/H2 plasmas in the same GEC cell. In contrast to the atomic hydrogen lines, no broadening was observed in oxygen species lines at low pressures. Also, in control Xe/H2 plasmas run in the same cell at similar pressures and adsorbed power, no significant broadening of atomic hydrogen, Xe, or any other lines was observed. Stark broadening or acceleration of charged species due to high electric fields can not explain the results since (i) the electron density was insufficient by orders of magnitude, (ii) the RF field was essentially confined to the cathode fall region in contrast to the broadening that was independent of position, and (iii) only the atomic hydrogen lines were broadened. Rather, all of the data is consistent with a model that claims specific, predicted, species can act catalytically through a resonant energy transfer mechanism to create hot hydrogen atoms in plasmas.

Jonathan Phillips; Chun Ku Chen; Randell Mills

2004-02-06T23:59:59.000Z

417

Evidence of the production of hot hydrogen atoms in RF plasmas by catalytic reactions between hydrogen and oxygen species  

E-Print Network (OSTI)

Selective H atom broadening was found to be present throughout the volume (13.5 cm diameter x 38 cm length) of RF generated H2O plasmas in a GEC cell. Notably, at low pressures (hot' witha energies greater than 40 eV, with a pressure dependence, but only a weak power dependence. The degree of broadening was virtually independent of the position within the GEC cell. In contrast to the atomic hydrogen lines, no broadening was observed in oxygen species lines at low pressure. Also, in 'control' Xe/H2 plasmas run in the saem cell at similar pressures and absorbed power, no significant broadening of atomic hydrogen, Xe or any other lines was observed. Stark broadeing or acceleration of charged species due to high electric fields can not explain the results since (i) the electron density was insufficient by orders or magnitude, (ii) the RF field was essentially confined to the cathode fall region in contrast to the broadening which was fou...

Phillips, J; Mills, R; Phillips, Jonathan; Chen, Chun Ku; Mills, Randell

2004-01-01T23:59:59.000Z

418

Double-{beta}-decay Q values of {sup 130}Te, {sup 128}Te, and {sup 120}Te  

SciTech Connect

The double-{beta}-decay Q values of {sup 130}Te, {sup 128}Te, and {sup 120}Te have been determined from parent-daughter mass differences measured with the Canadian Penning Trap mass spectrometer. The {sup 132}Xe-{sup 129}Xe mass difference, which is precisely known, was also determined to confirm the accuracy of these results. The {sup 130}Te Q value was found to be 2527.01{+-}0.32 keV, which is 3.3 keV lower than the 2003 Atomic Mass Evaluation recommended value and is consistent with another recent Penning trap measurement. The {sup 128}Te and {sup 120}Te Q values were found to be 865.87{+-}1.31 and 1714.81{+-}1.25 keV, respectively. For {sup 120}Te, this reduction in uncertainty of nearly a factor of 8 opens up the possibility of using this isotope for sensitive searches for neutrinoless double-electron capture and electron capture with {beta}{sup +}emission.

Scielzo, N. D. [Physical Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California 94550 (United States); Caldwell, S.; Savard, G.; Sternberg, M.; Van Schelt, J. [Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States); Department of Physics, University of Chicago, Chicago, Illinois 60637 (United States); Clark, J. A.; Levand, A. F.; Sun, T. [Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States); Deibel, C. M. [Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States); Joint Institute of Nuclear Astrophysics, Michigan State University, East Lansing, Michigan 48824 (United States); Fallis, J. [Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States); Department of Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba R3T 2N2 (Canada); Gulick, S. [Department of Physics, McGill University, Montreal, Quebec H3A 2T8 (Canada); Lascar, D. [Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States); Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208 (United States); Li, G. [Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States); Department of Physics, McGill University, Montreal, Quebec H3A 2T8 (Canada); Mintz, J. [Department of Nuclear Engineering, University of California, Berkeley, California 94720 (United States); Norman, E. B. [Physical Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California 94550 (United States); Department of Nuclear Engineering, University of California, Berkeley, California 94720 (United States); Sharma, K. S. [Department of Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba R3T 2N2 (Canada)

2009-08-15T23:59:59.000Z

419

CTBTO Contractor Laboratory Test Sample Production Report  

SciTech Connect

In October 2012 scientists from both Idaho National Laboratory (INL) and the CTBTO contact laboratory at Seibersdorf, Austria designed a system and capability test to determine if the INL could produce and deliver a short lived radio xenon standard in time for the standard to be measured at the CTBTO contact laboratory at Seibersdorf, Austria. The test included sample standard transportation duration and potential country entrance delays at customs. On October 23, 2012 scientists at the Idaho National Laboratory (INL) prepared and shipped a Seibersdorf contract laboratory supplied cylinder. The canister contained 1.0 scc of gas that consisted of 70% xenon and 30% nitrogen by volume. The t0 was October 24, 2012, 1200 ZULU. The xenon content was 0.70 +/ 0.01 scc at 0 degrees C. The 133mXe content was 4200 +/ 155 dpm per scc of stable xenon on t0 (1 sigma uncertainty). The 133Xe content was 19000 +/ 800 dpm per scc of stable xenon on t0 (1 sigma uncertainty).

Bob Hague; Tracy Houghton; Nick Mann; Matt Watrous

2013-08-01T23:59:59.000Z

420

Studies of heavy-ion reactions and transuranic nuclei. Progress report, September 1, 1992--August 31, 1993  

SciTech Connect

This report contain papers on the following topics: The Cold-Fusion Saga; Decay Patterns of Dysprosium Nuclei Produced in {sup 32}S + {sup 118,124}Sn Fusion Reactions; Unexpected Features of Reactions Between Very Heavy Ions at Intermediate Bombarding Energies; Correlations Between Neutrons and Charged Products from the Dissipative Reaction {sup 197}Au+{sup 208}Pb at E/A = 29 MeV; Dissipative Dynamics of Projectile-Like Fragment Production in the Reaction {sup 209}Bi+{sup 136}Xe at E/A = 28.2 MeV; Dynamical Production of Intermediate-Mass Fragments in Peripheral {sup 209}Bi+{sup 136}Xe Collisions at E{sub lab}/A = 28.2 MeV; The Rochester 960-Liter Neutron Multiplicity Meter; A Simple Pulse Processing Concept for a Low-Cost Pulse-Shape-Based Particle Identification; A One-Transistor Preamplifier for PMT Anode Signals; A Five-Channel Multistop TDC/Event Handler for the SuperBall Neutron Multiplicity Meter; Construction of the SuperBall -- a 16,000-Liter Neutron Detector for Calorimetric Studies of Intermediate-Energy Heavy-Ion Reactions; A Computer Code for Light Detection Efficiency Calculations for Photo-multipliers of a Neutron Detector; Evaluation of Gd-Loaded Liquid Scintillators for the SuperBall Neutron Calorimeter; and Measurement of the Interaction of Cosmic-Ray {mu}{sup {minus}} with a Muon Telescope.

Schroeder, W.U.

1993-08-01T23:59:59.000Z

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


421

HiR Thermal Testing Results  

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

5 5 position specimen # specimen description (test conditions: cold side -18°C, warm side 21°C) date + time 100 mm from head TC center of glass TC 100 mm from sill TC upper IR line average lower IR line average complete IR line average left 6 triple, 2 sputtered low-e glass layers, uncoated acrylic center layer in grooved spacer (rebuilt), Kr 5/4/05 21:29 18.57 17.93 17.92 17.66 16.52 17.13 right 18 triple, 2 sputtered low-e glass layers, uncoated glass center layer in traditional broken spacer, Kr 18.54 18.38 17.67 17.81 16.85 17.37 - Back to Summary - - Back to Summary - - Back to Summary - delta T line average delta T 100mm from head delta T center of glass delta T 100mm from sill ambient high ambient low ambient average six surface average

422

HiR Thermal Testing Results  

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

0 0 position specimen # specimen description (test conditions: cold side -18°C, warm side 21°C) date + time 100 mm from head TC center of glass TC 100 mm from sill TC upper IR line average lower IR line average complete IR line average left 23 triple, 2 sputtered low-e glass layers, 1/16" acrylic with gap at top only, Kr 6/28/06 23:48 18.39 17.74 17.53 17.48 16.45 17.00 right 22 triple, 2 sputtered low-e glass layers, 1/8" folded edge polycarbonate center layer, Kr 18.40 17.74 16.71 17.56 16.09 16.88 - Back to Summary - - Back to Summary - - Back to Summary - delta T line average delta T 100mm from head delta T center of glass delta T 100mm from sill ambient high ambient low ambient average six surface average

423

HiR Thermal Testing Results  

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

4 4 position specimen # specimen description (test conditions: cold side -18°C, warm side 21°C) date + time 100 mm from head TC center of glass TC 100 mm from sill TC upper IR line average lower IR line average complete IR line average left 6 triple, 2 sputtered low-e glass layers, uncoated acrylic center layer in grooved spacer (rebuilt), Kr 4/29/05 16:09 18.54 17.98 17.98 17.85 16.77 17.34 right 17 triple, 2 sputtered low-e glass layers, uncoated acrylic center layer with 1/16" perimeter gap, Kr 18.88 16.14 16.08 17.71 14.41 16.15 - Back to Summary - - Back to Summary - - Back to Summary - delta T line average delta T 100mm from head delta T center of glass delta T 100mm from sill ambient high ambient low ambient average six surface average

424

WindPACT Turbine Design Scaling Studies: Technical Area 4ƒBalance-of-Station Cost  

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

1 * NREL/SR-500-29950 1 * NREL/SR-500-29950 D.A. Shafer, K.R. Strawmyer, R.M. Conley, J.H. Guidinger, D.C. Wilkie, and T.F. Zellman With assistance from D.W. Bernadett Commonwealth Associates, Inc. Jackson, Michigan WindPACT Turbine Design Scaling Studies: Technical Area 4- Balance-of-Station Cost 21 March 2000-15 March 2001 National Renewable Energy Laboratory 1617 Cole Boulevard Golden, Colorado 80401-3393 NREL is a U.S. Department of Energy Laboratory Operated by Midwest Research Institute * * * * Battelle * * * * Bechtel Contract No. DE-AC36-99-GO10337 July 2001 * NREL/SR-500-29950 WindPACT Turbine Desing Scaling Studies: Technical Area 4- Balance-of-Station Cost 21 March 2000-15 March 2001 D.A. Shafer, K.R. Strawmyer, R.M. Conley, J.H. Guidinger, D.C. Wilkie, and T.F. Zellman

425

HiR Thermal Testing Results  

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

2 2 position specimen # specimen description (test conditions: cold side -18°C, warm side 21°C) date + time 100 mm from head TC center of glass TC 100 mm from sill TC upper IR line average lower IR line average complete IR line average left 6 triple, 2 sputtered low-e glass layers, uncoated acrylic center layer in grooved spacer (rebuilt), Kr 4/14/05 17:22 18.51 17.42 17.76 17.67 16.61 17.18 right 15 triple, 2 sputtered low-e glass layers, dense sun screen center layer, Kr 19.33 17.07 13.77 18.00 14.20 16.26 - Back to Summary - - Back to Summary - - Back to Summary - delta T line average delta T 100mm from head delta T center of glass delta T 100mm from sill ambient high ambient low ambient average six surface average

426

HiR Thermal Testing Results  

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

9 9 position specimen # specimen description (test conditions: cold side -18°C, warm side 21°C) date + time 100 mm from head TC center of glass TC 100 mm from sill TC upper IR line average lower IR line average complete IR line average left 6 triple, 2 sputtered low-e glass layers, uncoated acrylic center layer in grooved spacer (rebuilt), Kr 1/31/06 16:22 17.15 15.06 16.46 15.32 13.91 14.68 right 22 triple, 2 sputtered low-e glass layers, 1/8" folded edge polycarbonate center layer, Kr 18.53 17.87 16.90 17.71 16.41 17.11 - Back to Summary - - Back to Summary - - Back to Summary - delta T line average delta T 100mm from head delta T center of glass delta T 100mm from sill ambient high ambient low ambient average six surface average

427

HiR Thermal Testing Results  

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

6 6 position specimen # specimen description (test conditions: cold side -18°C, warm side 21°C) date + time 100 mm from head TC center of glass TC 100 mm from sill TC upper IR line average lower IR line average complete IR line average left 6 triple, 2 sputtered low-e glass layers, uncoated acrylic center layer in grooved spacer, Kr 3/24/05 12:40 17.51 17.52 17.63 16.30 17.03 right 9 triple, 2 sputtered low-e glass layers, 72% open insect screen center layer, Kr 17.12 13.05 17.65 13.84 15.91 - Back to Summary - - Back to Summary - - Back to Summary - delta T line average delta T 100mm from head delta T center of glass delta T 100mm from sill ambient high ambient low ambient average six surface average 1.12 0.00 0.39 4.47 21.36 20.68 21.02 20.8

428

HiR Thermal Testing Results  

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

7 7 position specimen # specimen description (test conditions: cold side -18°C, warm side 21°C) date + time 100 mm from head TC center of glass TC 100 mm from sill TC upper IR line average lower IR line average complete IR line average left 6 triple, 2 sputtered low-e glass layers, uncoated acrylic center layer in grooved spacer (rebuilt), Kr 5/25/05 16:15 18.47 17.37 17.87 17.40 16.11 16.82 right 20 triple, 2 sputtered low-e glass layers, folded Lexan center layer, Kr 18.63 17.24 16.06 17.51 15.64 16.67 - Back to Summary - - Back to Summary - - Back to Summary - delta T line average delta T 100mm from head delta T center of glass delta T 100mm from sill ambient high ambient low ambient average six surface average

429

HiR Thermal Testing Results  

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

2 2 position specimen # specimen description (test conditions: cold side -18°C, warm side 21°C) date + time 100 mm from head TC center of glass TC 100 mm from sill TC upper IR line average lower IR line average complete IR line average left 23 triple, 2 sputtered low-e glass layers, 1/16" acrylic with gap at bottom only, Kr 9/22/06 9:42 18.28 18.07 17.38 17.66 16.79 17.27 right 22 triple, 2 sputtered low-e glass layers, 1/8" folded edge polycarbonate center layer, Kr 18.34 17.70 16.83 17.57 16.28 16.98 - Back to Summary - - Back to Summary - - Back to Summary - delta T line average delta T 100mm from head delta T center of glass delta T 100mm from sill ambient high ambient low ambient average six surface average

430

HiR Thermal Testing Results  

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

6 6 position specimen # specimen description (test conditions: cold side -18°C, warm side 21°C) date + time 100 mm from head TC center of glass TC 100 mm from sill TC upper IR line average lower IR line average complete IR line average left 6 triple, 2 sputtered low-e glass layers, uncoated acrylic center layer in grooved spacer (rebuilt), Kr 5/20/05 18:05 18.33 16.96 17.89 17.27 16.04 16.71 right 19 double, 1 sputtered low-e glass layer, 3/8" gap, Kr 15.73 15.53 14.97 14.51 13.65 14.13 - Back to Summary - - Back to Summary - - Back to Summary - delta T line average delta T 100mm from head delta T center of glass delta T 100mm from sill ambient high ambient low ambient average six surface average 2.59 2.60 1.43 2.92 21.54 20.61 21.08 20.85

431

 

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

krypton (Kr) krypton (Kr) Quantity Value Units Value Units Atomic number 36 Atomic mass 83.798(2) g mole-1 Density 2.42 g cm-3 Mean excitation energy 352.0 eV Minimum ionization 1.357 MeV g-1cm2 3.281 MeV cm-1 Nuclear collision length 90.0 g cm-2 37.21 cm Nuclear interaction length 149.4 g cm-2 61.80 cm Pion collision length 114.8 g cm-2 47.46 cm Pion interaction length 177.6 g cm-2 73.47 cm Radiation length 11.37 g cm-2 4.703 cm Critical energy 17.03 MeV (for e-) 16.51 MeV (for e+) Molière radius 14.16 g cm-2 5.857 cm Plasma energy 29.37 eV Muon critical energy 277. GeV Melting point 115.8 K -157.4 C Boiling point @ 1 atm 119.9 K -153.2 C Index of refraction (@ STP, Na D) 1.30 For muons, dE/dx = a(E) + b(E) E. Tables of b(E): PS PDF TEXT

432

Survey of Laser Markets Relevant to Inertial Fusion Energy Drivers, information for National Research Council  

Science Conference Proceedings (OSTI)

Development of a new technology for commercial application can be significantly accelerated by leveraging related technologies used in other markets. Synergies across multiple application domains attract research and development (R and D) talent - widening the innovation pipeline - and increases the market demand in common components and subsystems to provide performance improvements and cost reductions. For these reasons, driver development plans for inertial fusion energy (IFE) should consider the non-fusion technology base that can be lveraged for application to IFE. At this time, two laser driver technologies are being proposed for IFE: solid-state lasers (SSLs) and KrF gas (excimer) lasers. This document provides a brief survey of organizations actively engaged in these technologies. This is intended to facilitate comparison of the opportunities for leveraging the larger technical community for IFE laser driver development. They have included tables that summarize the commercial organizations selling solid-state and KrF lasers, and a brief summary of organizations actively engaged in R and D on these technologies.

Bayramian, A J; Deri, R J; Erlandson, A C

2011-02-24T23:59:59.000Z

433

Daily Thermal Predictions of the AGR-1 Experiment with Gas Gaps Varying with Time  

SciTech Connect

A new daily as-run thermal analysis was performed at the Idaho National Laboratory on the Advanced Gas Reactor (AGR) test experiment number one at the Advanced Test Reactor (ATR). This thermal analysis incorporates gas gaps changing with time during the irradiation experiment. The purpose of this analysis was to calculate the daily average temperatures of each compact to compare with experimental results. Post irradiation examination (PIE) measurements of the graphite holder and fuel compacts showed the gas gaps varying from the beginning of life. The control temperature gas gap and the fuel compact graphite holder gas gaps were linearly changed from the original fabrication dimensions, to the end of irradiation measurements. A steady-state thermal analysis was performed for each daily calculation. These new thermal predictions more closely match the experimental data taken during the experiment than previous analyses. Results are presented comparing normalized compact average temperatures to normalized log(R/B) Kr-85m. The R/B term is the measured release rate divided by the predicted birth rate for the isotope Kr-85m. Correlations between these two normalized values are presented.

Grant Hawkes; James Sterbentz; John Maki; Binh Pham

2012-06-01T23:59:59.000Z

434

Project Rio Blanco radioactivity and the environment  

SciTech Connect

Data are presented on radiological measurements of the environment and on documenting the transfer to a subsurface disposal well of radioactive water separated from the produced gas stream. Analysis of gas and water through the drilling well control unit revealed the presence of $sup 3$H and $sup 85$Kr in the gas and $sup 3$H, $sup 137$Cs, and $sup 90$Sr in the water. The production test, disposal system, and radiological monitoring system are described. Data on effluents are presented under the headings: gas and water production, radioactivity concentrations in gas, radioactivity concentrations in separator water samples, radioactivity concentrations in injected water volumes, and disposition of radioactivity. Tritium, $sup 39$Ar, $sup 14$C, $sup 85$Kr, and $sup 222$Rn were present in gas. Tritium, $sup 134$CCs, $sup 137$Cs, $sup 90$Sr, $sup 75$Se, and $sup 106$Ru were present in separator water samples. Data on environmental monitoring and RB-AR-2 drilling and testing are presented under the headings air sampling, air moisture and precipitation sampling, soil sampling, water sampling, Fawn Creek sediments and algae/moss samples, bioassays, aerial surveillance, and potential environmental radiation doses. (HLW)

1975-10-01T23:59:59.000Z

435

A Winning Strategy for the Ramsey Graph Game  

E-Print Network (OSTI)

We consider a "Maker-Breaker" version of the Ramsey Graph Game, RG(n), and present a winning strategy for Maker requiring at most (n 0 3)2 n01 + n + 1 moves. This is the fastest winning strategy known so far. We also demonstrate how the ideas presented can be used to develop winning strategies for some related combinatorial games. Keywords: Combinatorial Games, Algorithms on Graphs, Ramsey Theory 1 Introduction The Ramsey Graph Game, RG(n), on a complete graph on N vertices, KN , is considered. Two players, Maker (red) and Breaker (blue) alternately color the edges of KN . Maker is first to play, and the players color one edge per move. Maker wins the game if there is a red Kn . Breaker wins if there is no red Kn after all the N (N 0 1)=2 edges have been colored. Let R(n; n) denote the n-th Ramsey number, i.e., the smallest number R such that for every two-coloring of the edges of KR there exsist a monochromatic Kn ae KR . Maker has a simple winning strategy if N 2R(n; n). Note ...

Aleksandar Pekec

1995-01-01T23:59:59.000Z

436

Krypton-85 hydrofracture engineering feasibility and safety evaluation  

SciTech Connect

Engineering studies have been made to determine the hazards associated with the disposal of /sup 85/Kr using the hydrofracture process. To assess the hazards, an effort has been made to identify the equipment required to entrain and dissolve the noble gas into the grout stream at hydrofracture pressure (up to 350 bar). Off-the-shelf or slightly modified equipment has been identified for safe and effective compression and gas-grout mixing. Each monthly injection disposes of 1.6 x 10/sup 6/ Ci of /sup 85/Kr. By connecting only one gas cylinder to the injection system at a time, the maximum amount of krypton likely to be released as a result of equipment failure is limited to 128,000 Ci. An evaluation by Los Alamos Technical Associates shows that releasing this amount of gas in less than one hour under worst-case meteorological conditions through a 30-m stack would result in a whole-body dose of 170 millirem at a distance of 1 km from the facility. A krypton collection and recovery system can further reduce this dose to 17 millirem; increasing the distance to the site boundary to 3 km can also reduce the dose by a factor of ten. Lung and skin dose estimates are 1.6 and 120 times the whole-body dose, respectively. These are all worst-case values; releases under more typical conditions would result in a significantly lower dose. No insurmountable safety or engineering problems have been identified.

Peretz, F.J.; Muller, M.E.; Pan, P.Y.

1981-07-01T23:59:59.000Z

437

Water bath calorimetric study of excess heat generation in 'resonant transfer' plasmas  

E-Print Network (OSTI)

Water bath calorimetry was used to demonstrate one more peculiar phenomenon associated with a certain class of mixed gas plasmas termed resonant transfer, or RT plasmas. Specifically, He/H2 (10%) (500 mTorr), Ar/H2 (10%) (500 mTorr), and H2O(g) (500 and 200 mTorr) plasmas generated with an Evenson microwave cavity consistently yielded on the order of 50% more heat than non RT plasma (controls) such as He, Kr, Kr/H2 (10%), under identical conditions of gas flow, pressure, and microwave operating conditions. The excess power density of RT plasmas was of the order 10 W / cm-3. In earlier studies with these same RT plasmas it was demonstrated that other unusual features were present including dramatic broadening of the hydrogen Balmer series lines, unique vacuum ultraviolet (VUV) lines, and in the case of water plasmas, population inversion of the hydrogen excited states. Both the current results and the earlier results are completely consistent with the existence of a hitherto unknown exothermic chemical reaction, such as that predicted by Mills, occurring in RT plasmas.

J. Phillips; R. L. Mills; X. Chen

2004-01-26T23:59:59.000Z

438

Considerations in siting long-term radioactive noble gas storage facilities  

SciTech Connect

Cost-benefit analysis indicates that it would be prudent policy to require the prevention of /sup 85/Kr release from fuel reprocessing plants at the present time, assuming this can be accomplished at a cost amounting to less than 00/Ci. Options are discussed for accomplishment of /sup 85/Kr release prevention from fuel reprocessing plants. No value judgments have been attempted in evaluating these options. However, it has been assumed that a policy of concentrating effluent noble gases, retaining them in pressurized storage tanks, and storing them for long periods at some centralized facility will be adopted. Such a policy would appear to be consistent with current AEC policy on high-level waste management. Criteria for siting a long-term noble gas storage facility should include assurance that in the event of a containment failure: (a) maximum permissible dose guidelines (0.5 rem/yr for whole body and 3.0 rem/yr for skin) are not exceeded, and (b) resultant population doses (man-rem) are minimized. Five hypothetical sites have been evaluated to estimate population doses in the event of leakage. From this analysis it appears that geographic siting may be considered relatively unimportant. Site selection should be based on cost- benefit studies considering: (a) transportation and handling costs, (b) maintenance and surveillance costs, and resultant health benefits derived in terms of potential population dose averted. (auth)

Cohen, J.J.; Peterson, K.R.

1973-12-01T23:59:59.000Z

439

Data summary report for fission product release Test VI-7  

SciTech Connect

Test VI-7 was the final test in the VI series conducted in the vertical furnace. The fuel specimen was a 15.2-cm-long section of a fuel rod from the Monticello boiling water reactor (BWR). The fuel had experienced a burnup of {approximately}-40 Mwd/kg U. It was heated in an induction furnace for successive 20-min periods at 2000 and 2300 K in a moist air-helium atmosphere. Integral releases were 69% for {sup 85}Kr, 52% for {sup 125}Sb, 71% for both {sup 134}Cs and {sup 137}Cs, and 0.04% for {sup 154}Eu. For the non-gamma-emitting species, release values for 42% for I, 4.1% for Ba, 5.3% for Mo, and 1.2% for Sr were determined. The total mass released from the furnace to the collection system, including fission products, fuel, and structural materials, was 0.89 g, with 37% being collected on the thermal gradient tubes and 63% downstream on filters. Posttest examination of the fuel specimen indicated that most of the cladding was completely oxidized to ZrO{sub 2}, but that oxidation was not quite complete at the upper end. The release behaviors for the most volatile elements, Kr and Cs, were in good agreement with the ORNL-Booth Model.

Osborne, M.F.; Lorentz, R.A.; Travis, J.R.; Collins, J.L.; Webster, C.S. [Oak Ridge National Lab., TN (United States)

1995-05-01T23:59:59.000Z

440

BESSRC-CAT  

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

BESSRC-CAT, Basic Energy Sciences Synchrotron Radiation Center Collaorative BESSRC-CAT, Basic Energy Sciences Synchrotron Radiation Center Collaorative Access Team 11-ID Laser pump, x-ray probe, time-domain XAFS study of transient molecular structures L. Chen, D. Gosztola, G. Jennings, and W. Jäger 12-BM Direct evidence of structural changes affecting electron transfer rate from QA to QB in photosynthetic bacterial reaction center proteins probed by Fe2+ binding site using XAFS L. Chen, L. Utschig, P. Laible, S. Schlesselman, D. Hanson, and D. Tiede Double K-photoionization of heavy atoms R.W. Dunford, D.S. Gemmell, E.P. Kanter, B. Krässig, and S.H. Southworth Manifestations of nonlocal exchange, correlation, and dynamic effects in x-ray scattering M. Jung, R.W. Dunford, D. S. Gemmell, E.P. Kanter, B. Krässig, T.W. LeBrun, S.H. Southworth, L. Young, J.P.J. Carney, L. LaJohn, R.H. Pratt,

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


441

Time-resolved diagnostics of excimer laser-generated ablation plasmas used for pulsed laser deposition  

SciTech Connect

Characteristics of laser plasmas used for pulsed laser deposition (PLD) of thin films are examined with four in situ diagnostic techniques: Optical emission spectroscopy, optical absorption spectroscopy, ion probe studies, and gated ICCD (intensified charge-coupled-device array) fast photography. These four techniques are complementary and permit simultaneous views of the transport of ions, excited states, ground state neutrals and ions, and hot particulates following KrF laser ablation of YBCO, BN, graphite and Si in vacuum and background gases. The implementation and advantages of the four techniques are first described in order to introduce the key features of laser plasmas for pulsed laser deposition. Aspects of the interaction of the ablation plume with background gases (i.e., thermalization, attenuation, shock formation) and the collision of the plasma plume with the substrate heater are then summarized. The techniques of fast ICCD photography and gated photon counting are then applied to investigate the temperature, velocity, and spatial distribution of hot particles generated during KrF ablation of YBCO, BN, Si and graphite. Finally, key features of fast imaging of the laser ablation of graphite into high pressure rare gases are presented in order to elucidate internal reflected shocks within the plume, redeposition of material on a surface, and formation of hot nanoparticles within the plume.

Geohegan, D.B.

1994-09-01T23:59:59.000Z

442

Atomistic modeling of nanoscale patterning of L1{sub 2} order induced by ion irradiation  

Science Conference Proceedings (OSTI)

Theoretical predictions indicate that ordered alloys can spontaneously develop a steady-state nanoscale microstructure when irradiated with energetic particles. This behavior derives from a dynamical competition between disordering in cascades and thermally activated reordering, which leads to self-organization of the chemical order parameter. We test this possibility by combining molecular dynamics (MD) and kinetic Monte Carlo (KMC) simulations. We first generate realistic distributions of disordered zones for Ni{sub 3}Al irradiated with 70 keV He and 1 MeV Kr ions using MD and then input this data into KMC to obtain predictions of steady state microstructures as a function of the irradiation flux. Nanoscale patterning is observed for Kr ion irradiations but not for He ion irradiations. We illustrate, moreover, using image simulations of these KMC microstructures, that high-resolution transmission electron microscopy can be employed to identify nanoscale patterning. Finally, we indicate how this method could be used to synthesize functional thin films, with potential for magnetic applications.

Ye Jia [Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 (United States); Lawrence Berkeley Laboratory, Berkeley, California 94720-8250 (United States); Li Youhong [Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 (United States); Engineered Material Arresting Systems, Zodiac Aerospace, Logan Township, New Jersey 08085 (United States); Averback, Robert; Zuo Jianmin [Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 (United States); Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 (United States); Bellon, Pascal [Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 (United States)

2010-09-15T23:59:59.000Z

443

U.S. Department of Energy Categorical Exclusion Determination Form  

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

Electrochemical Fluorination in Molten Fluoride Salts Electrochemical Fluorination in Molten Fluoride Salts Savannah River Site Aiken/Aiken/South Carolina This EEC covers activities in C105/110 related to development of an electrochemical fluorination process to separate selected metals (non- RCRA) from depleted uranium. The goal of the process is to convert depleted uranium metal (U) to gaseous uranium hexafluoride (UF6) that can be easily separated from solution while other metallic constituents remain as metals or are converted to non-volatile fluoride salts. The electrochemical fluorination process will be conducted in molten fluoride eutectic salts at temperatures above 300°C. The electrochemical fluorination process will be carried out using the fluorinating agents such as NF3, XeF2, and F2. Additional inert gases or vacuum may be used in

444

Cray XT Documentation  

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

Cray XT Documentation Cray XT Documentation Cray XT Documentation & Cray XT Documentation Search Preferences | Advanced Search Home Browse Books Man Pages Glossary Platforms Cray XC30 Cray XE and Cray XK Cray XT Cray Sonexion Cray X2 Cray X1 Knowledge Base by Category by Date by Platform by Title by User Release Announcements @Twitter Cray XT System Documentation Getting Started Cray XT System Overview Cray Linux Environment (CLE) Software Release Overview Cray Linux Environment (CLE) Software Release Overview Supplement Glossary of Terms Programming Environment Cray Application Developer's Environment User's Guide Cray Compiling Environment (CCE) Cray Fortran Reference Manual crayftn man page Cray C and C++ Reference Manual craycc man page crayCC man page Intrinsic function man pages Assign environment man pages

445

Site-Selective Ionization in Nanoclusters Affects Subsequent Fragmentation  

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

Site-Selective Ionization in Nanoclusters Affects Subsequent Fragmentation Print Site-Selective Ionization in Nanoclusters Affects Subsequent Fragmentation Print Understanding charge-transfer processes at the atomic level of nanoscale systems is of the utmost importance for designing nanodevices based on quantum-dot structures, nanotubes, or two-dimensional graphene sheets. Researchers from Western Michigan University, Berkeley Lab, and other international research facilities investigated charge-transfer processes and subsequent ion fragmentation dynamics in nanoclusters composed of argon (Ar) shells and xenon (Xe) cores. The clusters were site-selectively ionized (i.e, ionization took place either in the xenon core or in the argon shell). Using a high-resolution photoelectron-ion coincidence technique at ALS Beamlines 10.0.1 and 11.0.2, the researchers concluded that charge-transfer processes and fragmentation dynamics are strongly influenced by the environment of the initially ionized atoms.

446

Data:5549f0bb-0178-490f-bf3d-7e0c9932b6a5 | Open Energy Information  

Open Energy Info (EERE)

0178-490f-bf3d-7e0c9932b6a5 0178-490f-bf3d-7e0c9932b6a5 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Public Service Co of Colorado Effective date: 2010/06/01 End date if known: Rate name: CUSTOMER-OWNED LIGHTING SERVICE - SCHEDULE COL- HPS 310w Sector: Lighting Description: Applicable to the Colorado Department of Transportation and municipalities for Customer-Owned Lighting Service. This rate schedule is subject to all applicable Electric Rate Adjustments as on file and in effect in this tariff. Source or reference: http://www.xcelenergy.com/staticfiles/xe/Regulatory/Regulatory%20PDFs/psco_elec_entire_tariff.pdf

447

Data:326cf9c3-a934-4bcb-84e2-ff7481169949 | Open Energy Information  

Open Energy Info (EERE)

cf9c3-a934-4bcb-84e2-ff7481169949 cf9c3-a934-4bcb-84e2-ff7481169949 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Public Service Co of Colorado Effective date: 2010/06/01 End date if known: Rate name: CUSTOMER-OWNED LIGHTING SERVICE - SCHEDULE COL - Compact Fluorescent 28w Sector: Lighting Description: Applicable to the Colorado Department of Transportation and municipalities for Customer-Owned Lighting Service. This rate schedule is subject to all applicable Electric Rate Adjustments as on file and in effect in this tariff. Source or reference: http://www.xcelenergy.com/staticfiles/xe/Regulatory/Regulatory%20PDFs/psco_elec_entire_tariff.pdf

448

Data:02533e46-6c0e-439e-8947-468dfa9efa61 | Open Energy Information  

Open Energy Info (EERE)

-6c0e-439e-8947-468dfa9efa61 -6c0e-439e-8947-468dfa9efa61 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Public Service Co of Colorado Effective date: 2010/06/01 End date if known: Rate name: CUSTOMER-OWNED LIGHTING SERVICE - SCHEDULE COL- Metal Halide 400w Sector: Lighting Description: Applicable to the Colorado Department of Transportation and municipalities for Customer-Owned Lighting Service. This rate schedule is subject to all applicable Electric Rate Adjustments as on file and in effect in this tariff. Source or reference: http://www.xcelenergy.com/staticfiles/xe/Regulatory/Regulatory%20PDFs/psco_elec_entire_tariff.pdf

449

Data:576e0c83-d44e-4c16-adb3-6b023b08663e | Open Energy Information  

Open Energy Info (EERE)

c83-d44e-4c16-adb3-6b023b08663e c83-d44e-4c16-adb3-6b023b08663e No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Public Service Co of Colorado Effective date: 2010/06/01 End date if known: Rate name: CUSTOMER-OWNED LIGHTING SERVICE - SCHEDULE COL - HPS 200w Sector: Lighting Description: Applicable to the Colorado Department of Transportation and municipalities for Customer-Owned Lighting Service. This rate schedule is subject to all applicable Electric Rate Adjustments as on file and in effect in this tariff. Source or reference: http://www.xcelenergy.com/staticfiles/xe/Regulatory/Regulatory%20PDFs/psco_elec_entire_tariff.pdf

450

Density Inhomogeneities and Electron Mobility in Supercritical Xenon  

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

Density Inhomogeneities and Electron Mobility in Supercritical Xenon Density Inhomogeneities and Electron Mobility in Supercritical Xenon Richard A. Holroyd, Kengo Itoh, and Masaru Nishikawa J. Chem. Phys. 118, 706-710 (2003) [Find paper at Scitation] Abstract: The low-field mobility of electrons in supercritical Xe has been measured isothermally as a function of density above the critical temperature (289.7 K). At 293 K the mobility varies from a high of 890 cm2/Vs at 9.2 x 1021 atoms/cm3 to a minimum value of 4.6 cm2/Vs at a density of 3.5 x 1021 atoms/cm3, which is just below the critical density. The density dependence of the mobility is reasonably well predicted by the deformation potential model if the adiabatic compressibility is used to characterize the electron-medium interactions. Approximate agreement indicates that

451

Data:6361964a-4166-420c-91bd-31c89ff71a20 | Open Energy Information  

Open Energy Info (EERE)

a-4166-420c-91bd-31c89ff71a20 a-4166-420c-91bd-31c89ff71a20 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Public Service Co of Colorado Effective date: 2010/06/01 End date if known: Rate name: CUSTOMER-OWNED LIGHTING SERVICE - SCHEDULE COL- Metal Halide 1000w Sector: Lighting Description: Applicable to the Colorado Department of Transportation and municipalities for Customer-Owned Lighting Service. This rate schedule is subject to all applicable Electric Rate Adjustments as on file and in effect in this tariff. Source or reference: http://www.xcelenergy.com/staticfiles/xe/Regulatory/Regulatory%20PDFs/psco_elec_entire_tariff.pdf

452

Improved operation of the nonambipolar electron source  

Science Conference Proceedings (OSTI)

Significant improvements have been made to the nonambipolar electron source (NES), a radio frequency (rf) plasma-based electron source that does not rely on electron emission at a cathode surface [B. Longmier, S. Baalrud, and N. Hershkowitz, Rev. Sci. Instrum. 77, 113504 (2006)]. A prototype NES has produced 30 A of continuous electron current, using 2 SCCM (SCCM denotes cubic centimeter per minute at STP) Xe, 1300 W rf power at 13.56 MHz, yielding a 180 times gas utilization factor. A helicon mode transition has also been identified during NES operation with an argon propellant, using 15 SCCM Ar, 1000 W rf, and 100 G magnetic field. This NES technology has the ability to replace hollow cathode electron sources and to enable high power electric propulsion missions, eliminating one of the lifetime restrictions that many ion thrusters have previously been faced with.

Longmier, Ben; Hershkowitz, Noah [University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States)

2008-09-15T23:59:59.000Z

453

Simulation information regarding Sandia National Laboratories%3CU%2B2019%3E trinity capability improvement metric.  

SciTech Connect

Sandia National Laboratories, Los Alamos National Laboratory, and Lawrence Livermore National Laboratory each selected a representative simulation code to be used as a performance benchmark for the Trinity Capability Improvement Metric. Sandia selected SIERRA Low Mach Module: Nalu, which is a uid dynamics code that solves many variable-density, acoustically incompressible problems of interest spanning from laminar to turbulent ow regimes, since it is fairly representative of implicit codes that have been developed under ASC. The simulations for this metric were performed on the Cielo Cray XE6 platform during dedicated application time and the chosen case utilized 131,072 Cielo cores to perform a canonical turbulent open jet simulation within an approximately 9-billion-elementunstructured- hexahedral computational mesh. This report will document some of the results from these simulations as well as provide instructions to perform these simulations for comparison.

Agelastos, Anthony Michael; Lin, Paul T.

2013-10-01T23:59:59.000Z

454

Chemistry and Material Sciences Applications Training at NERSC April 5,  

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

User Feedback JGI Intro to NERSC Data Transfer and Archiving Using the Cray XE6 Joint NERSC/OLCF/NICS Cray XT5 Workshop NERSC User Group Training Remote Setup Online Tutorials Courses NERSC Training Accounts Request Form Training Links OSF HPC Seminiars Software Accounts & Allocations Policies Data Analytics & Visualization Data Management Policies Science Gateways User Surveys NERSC Users Group User Announcements Help Operations for: Passwords & Off-Hours Status 1-800-66-NERSC, option 1 or 510-486-6821 Account Support https://nim.nersc.gov accounts@nersc.gov 1-800-66-NERSC, option 2 or 510-486-8612 Consulting http://help.nersc.gov consult@nersc.gov 1-800-66-NERSC, option 3 or 510-486-8611 Home » For Users » Training & Tutorials » Training Events » Chemistry

455

Data:Afd3192c-7c55-4e61-bd64-0107be680731 | Open Energy Information  

Open Energy Info (EERE)

Afd3192c-7c55-4e61-bd64-0107be680731 Afd3192c-7c55-4e61-bd64-0107be680731 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Northern States Power Co - Minnesota (South Dakota) Effective date: 2012/08/01 End date if known: Rate name: GS-TOD (General Service Time-Of-Day Secondary) Sector: Commercial Description: AVAILABILITY Available to any non-residential customer for general service. Source or reference: https://www.xcelenergy.com/staticfiles/xe/Regulatory/Se_Section_5.pdf Source Parent: Comments Applicable to 25kW-Infinity Applicability Demand (kW) Minimum (kW): Maximum (kW): History (months): Energy (kWh)

456

Data:883b0dce-785b-469a-b24c-3f8f7e392419 | Open Energy Information  

Open Energy Info (EERE)

dce-785b-469a-b24c-3f8f7e392419 dce-785b-469a-b24c-3f8f7e392419 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Public Service Co of Colorado Effective date: 2010/06/01 End date if known: Rate name: CUSTOMER-OWNED LIGHTING SERVICE - SCHEDULE COL- HPS 70w Sector: Lighting Description: Applicable to the Colorado Department of Transportation and municipalities for Customer-Owned Lighting Service. This rate schedule is subject to all applicable Electric Rate Adjustments as on file and in effect in this tariff. Source or reference: http://www.xcelenergy.com/staticfiles/xe/Regulatory/Regulatory%20PDFs/psco_elec_entire_tariff.pdf

457

Data:33cc9bd1-4985-4034-899d-e654fc98284c | Open Energy Information  

Open Energy Info (EERE)

cc9bd1-4985-4034-899d-e654fc98284c cc9bd1-4985-4034-899d-e654fc98284c No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Southwestern Public Service Co (Texas) Effective date: 2013/05/01 End date if known: Rate name: Cal Farley Boys Ranch 2 Sector: Commercial Description: 15000 lumen high pressure sodium Source or reference: http://www.xcelenergy.com/staticfiles/xe/Corporate/Corporate%20PDFs/tx_sps_e_entire.pdf Source Parent: Comments Applicability Demand (kW) Minimum (kW): Maximum (kW): History (months): Energy (kWh) Minimum (kWh): Maximum (kWh): History (months): Service Voltage Minimum (V): Maximum (V):

458

Data:01dd0d71-2799-4a0f-8522-d23fa9e22c60 | Open Energy Information  

Open Energy Info (EERE)

d71-2799-4a0f-8522-d23fa9e22c60 d71-2799-4a0f-8522-d23fa9e22c60 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Southwestern Public Service Co (Texas) Effective date: 2013/05/01 End date if known: Rate name: 9500 Lumen HPS All Types Sector: Lighting Description: Source or reference: http://www.xcelenergy.com/staticfiles/xe/Corporate/Corporate%20PDFs/tx_sps_e_entire.pdf Source Parent: Comments Applicability Demand (kW) Minimum (kW): Maximum (kW): History (months): Energy (kWh) Minimum (kWh): Maximum (kWh): History (months): Service Voltage Minimum (V): Maximum (V): Character of Service Voltage Category:

459

Data:B8934fc0-0ee3-4c09-8c05-f1e50a74a4ba | Open Energy Information  

Open Energy Info (EERE)

0ee3-4c09-8c05-f1e50a74a4ba 0ee3-4c09-8c05-f1e50a74a4ba No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Northern States Power Co - Minnesota Effective date: 2012/05/01 End date if known: Rate name: STREET LIGHTING SERVICE - CITY OF ST. PAUL 250 W HPS Sector: Lighting Description: Available to the City of St. Paul for furnishing, maintaining, and operating certain electrical connections, lines, and appurtenances thereto, and supplying electric current for city street lighting. Source or reference: http://www.xcelenergy.com/staticfiles/xe/Regulatory/Regulatory%20PDFs/Me_Section_5.pdf

460

Data:F72631cd-ff1d-40e9-819f-6132f1e7836e | Open Energy Information  

Open Energy Info (EERE)

cd-ff1d-40e9-819f-6132f1e7836e cd-ff1d-40e9-819f-6132f1e7836e No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Public Service Co of Colorado Effective date: 2010/06/01 End date if known: Rate name: CUSTOMER-OWNED LIGHTING SERVICE - SCHEDULE COL - HPS 70w 2 Sector: Lighting Description: Applicable to the Colorado Department of Transportation and municipalities for Customer-Owned Lighting Service. This rate schedule is subject to all applicable Electric Rate Adjustments as on file and in effect in this tariff. Source or reference: http://www.xcelenergy.com/staticfiles/xe/Regulatory/Regulatory%20PDFs/psco_elec_entire_tariff.pdf

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461

Data:0782f0b1-605f-4764-9fa7-27445a02d5d3 | Open Energy Information  

Open Energy Info (EERE)

b1-605f-4764-9fa7-27445a02d5d3 b1-605f-4764-9fa7-27445a02d5d3 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Public Service Co of Colorado Effective date: 2010/06/01 End date if known: Rate name: CUSTOMER-OWNED LIGHTING SERVICE - SCHEDULE COL - HPS 250w 2 Sector: Lighting Description: Applicable to the Colorado Department of Transportation and municipalities for Customer-Owned Lighting Service. This rate schedule is subject to all applicable Electric Rate Adjustments as on file and in effect in this tariff. Source or reference: http://www.xcelenergy.com/staticfiles/xe/Regulatory/Regulatory%20PDFs/psco_elec_entire_tariff.pdf

462

Present and Future Computing needs in Atomic Physics  

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

in Atomic Physics in Atomic Physics John Ludlow, Connor Ballance, Stuart Loch, Teck-Ghee Lee, Mitch Pindzola Auburn University Science Goals * To calculate atomic and molecular collision processes of relevance to controlled fusion energy * Processes include electron-impact excitation and ionization of atoms and their ions, dielectronic recombination of ions and heavy particle impact excitation, ionization and charge transfer with atoms and ions * Ensure collisional data are interfaced with plasma modelling codes (ADAS, TRANSP) * We are presently focused on light elements like H, He, Li, Be, B, C, Ne * In the next 3-5 years we shall look at heavier fusion related elements such as Xe, Mo, W ADAS * The fundamental atomic data is processed through the ADAS suite of codes to give generalized collisional-

463

UPC-Yelick.ppt  

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

UPC Overview
 UPC Overview
 http://upc.lbl.gov
 Katherine Yelick
 NERSC Director" Lawrence Berkeley National Laboratory
 2/7/11" 1" Cray XE Training" What's Wrong with MPI Everywhere * We can run 1 MPI process per core ("flat MPI") - This works now on dual and quad-core machines - It will work on 12-24 core machines like Hopper as well * What are the problems? - Latency: some copying required by semantics - Memory utilization: partitioning data for separate address space requires some replication * How big is your per core subgrid? At 10x10x10, over 1/2 of the points are surface points, probably replicated * Weak scaling: success model for the "cluster era;" will not be for the many core era -- not enough memory per core

464

Copyright© 2013, Intel Corporation. All rights reserved  

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

Copyright© 2013, Intel Corporation. All rights reserved. Copyright© 2013, Intel Corporation. All rights reserved. *Other brands and names are the property of their respective owners. Performance Analysis for Intel architecture 10/24/13 1 Copyright© 2013, Intel Corporation. All rights reserved. *Other brands and names are the property of their respective owners. Intel ® VTune(tm) Amplifier XE 2013 Second Generation VTune(tm) Analyzer Fast, Accurate Performance Profiles * Hotspot (Statistical call tree) * Hardware-Event Based Sampling 1 Thread Profiling * Visualize thread interactions on timeline * Balance workloads Easy set-up * Pre-defined performance profiles * Use a normal production build Compatible * Microsoft, GCC, Intel compilers * C/C++, Fortran, Assembly, .NET, Java* * Latest Intel ® processors

465

Performance Tools Harvey Wasserman Woo-Sun Yang NERSC User Services Group  

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

Optimization and Optimization and Performance Tools Harvey Wasserman Woo-Sun Yang NERSC User Services Group Cray XE6 Workshop February 7-8, 2011 NERSC Oakland Scientific Facility Outline * Introduction, motivation, some terminology * Using CrayPat * Using Apprentice2 * Hands-on lab 2 Why Analyze Performance? * Improving performance on HPC systems has compelling economic and scientific rationales. - Dave Bailey: Value of improving performance of a single application, 5% of machine's cycles by 20% over 10 years: $1,500,000 - Scientific benefit probably much higher * Goal: solve problems faster; solve larger problems * Accurately state computational need * Only that which can be measured can be improved * The challenge is mapping the application to an increasingly

466

Data:A2cff840-fffd-4abf-82dc-af266c3b98f2 | Open Energy Information  

Open Energy Info (EERE)

40-fffd-4abf-82dc-af266c3b98f2 40-fffd-4abf-82dc-af266c3b98f2 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Public Service Co of Colorado Effective date: 2010/06/01 End date if known: Rate name: CUSTOMER-OWNED LIGHTING SERVICE - SCHEDULE COL- HPS 150w Sector: Lighting Description: Applicable to the Colorado Department of Transportation and municipalities for Customer-Owned Lighting Service. This rate schedule is subject to all applicable Electric Rate Adjustments as on file and in effect in this tariff. Source or reference: http://www.xcelenergy.com/staticfiles/xe/Regulatory/Regulatory%20PDFs/psco_elec_entire_tariff.pdf

467

Data:B3fe4d62-02a3-463d-b85f-cad043890176 | Open Energy Information  

Open Energy Info (EERE)

fe4d62-02a3-463d-b85f-cad043890176 fe4d62-02a3-463d-b85f-cad043890176 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Public Service Co of Colorado Effective date: 2010/06/01 End date if known: Rate name: CUSTOMER-OWNED LIGHTING SERVICE - SCHEDULE COL- HPS 400w Sector: Lighting Description: Applicable to the Colorado Department of Transportation and municipalities for Customer-Owned Lighting Service. This rate schedule is subject to all applicable Electric Rate Adjustments as on file and in effect in this tariff. Source or reference: http://www.xcelenergy.com/staticfiles/xe/Regulatory/Regulatory%20PDFs/psco_elec_entire_tariff.pdf

468

Data:7c27c846-254f-46f2-9566-7135304cc021 | Open Energy Information  

Open Energy Info (EERE)

46-254f-46f2-9566-7135304cc021 46-254f-46f2-9566-7135304cc021 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Public Service Co of Colorado Effective date: 2012/10/11 End date if known: Rate name: ENERGY ONLY STREET LIGHTING SERVICE - SCHEDULE ESL - 42.1-45.0 kWh per light Sector: Lighting Description: Source or reference: www.xcelenergy.com/staticfiles/xe/Regulatory/Regulatory PDFs/psco_elec_entire_tariff.pdf Source Parent: Comments Applicability Demand (kW) Minimum (kW): Maximum (kW): History (months): Energy (kWh) Minimum (kWh): Maximum (kWh): History (months): Service Voltage Minimum (V): Maximum (V):

469

Data:00c9b9d1-e346-4565-a714-00238df554de | Open Energy Information  

Open Energy Info (EERE)

b9d1-e346-4565-a714-00238df554de b9d1-e346-4565-a714-00238df554de No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Southwestern Public Service Co (Texas) Effective date: 2013/05/01 End date if known: Rate name: 40' wood pole underground Sector: Lighting Description: Source or reference: http://www.xcelenergy.com/staticfiles/xe/Corporate/Corporate%20PDFs/tx_sps_e_entire.pdf Source Parent: Comments Applicability Demand (kW) Minimum (kW): Maximum (kW): History (months): Energy (kWh) Minimum (kWh): Maximum (kWh): History (months): Service Voltage Minimum (V): Maximum (V): Character of Service Voltage Category:

470

Data:C26841d5-8667-4726-90b6-d8d1dce6532f | Open Energy Information  

Open Energy Info (EERE)

Data Data Edit with form History Facebook icon Twitter icon » Data:C26841d5-8667-4726-90b6-d8d1dce6532f No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Northern States Power Co - Minnesota Effective date: 2012/05/01 End date if known: Rate name: STREET LIGHTING SERVICE - CITY OF ST. PAUL 100 W HPS Sector: Lighting Description: Available to the City of St. Paul for furnishing, maintaining, and operating certain electrical connections, lines, and appurtenances thereto, and supplying electric current for city street lighting. Source or reference: http://www.xcelenergy.com/staticfiles/xe/Regulatory/Regulatory%20PDFs/Me_Section_5.pdf

471

Data:F3fd5782-8d27-4fa4-b713-bfa859f28194 | Open Energy Information  

Open Energy Info (EERE)

782-8d27-4fa4-b713-bfa859f28194 782-8d27-4fa4-b713-bfa859f28194 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Public Service Co of Colorado Effective date: 2012/10/11 End date if known: Rate name: CUSTOMER-OWNED LIGHTING SERVICE - SCHEDULE COL - HPS 70W Sector: Lighting Description: Source or reference: www.xcelenergy.com/staticfiles/xe/Regulatory/Regulatory PDFs/psco_elec_entire_tariff.pdf Source Parent: Comments Applicability Demand (kW) Minimum (kW): Maximum (kW): History (months): Energy (kWh) Minimum (kWh): Maximum (kWh): History (months): Service Voltage Minimum (V): Maximum (V): Character of Service

472

Data:Bd0e6c8a-c6c2-4f11-a13b-31665f6c1069 | Open Energy Information  

Open Energy Info (EERE)

c8a-c6c2-4f11-a13b-31665f6c1069 c8a-c6c2-4f11-a13b-31665f6c1069 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Northern States Power Co - Wisconsin Effective date: 2006/01/09 End date if known: Rate name: COMMERCIAL LOAD CONTROL RIDER Sector: Commercial Description: Availability: Available on an optional basis to any commercial or industrial customer, single- or three-phase, who allows Company to control all or part of their load during interruption periods. Rate: Monthly credit per kW of controlled load. Source or reference: http://www.xcelenergy.com/staticfiles/xe/Regulatory/2We_Section_2.pdf

473

Data:F8272651-b50e-4056-8090-75ca7fcfaa11 | Open Energy Information  

Open Energy Info (EERE)

1-b50e-4056-8090-75ca7fcfaa11 1-b50e-4056-8090-75ca7fcfaa11 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Public Service Co of Colorado Effective date: 2010/06/01 End date if known: Rate name: CUSTOMER-OWNED LIGHTING SERVICE - SCHEDULE COL- HPS 50w Sector: Lighting Description: Applicable to the Colorado Department of Transportation and municipalities for Customer-Owned Lighting Service. This rate schedule is subject to all applicable Electric Rate Adjustments as on file and in effect in this tariff. Source or reference: http://www.xcelenergy.com/staticfiles/xe/Regulatory/Regulatory%20PDFs/psco_elec_entire_tariff.pdf

474

Data:D61f73e1-f25e-468e-bf59-7c4956356b05 | Open Energy Information  

Open Energy Info (EERE)

e1-f25e-468e-bf59-7c4956356b05 e1-f25e-468e-bf59-7c4956356b05 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Public Service Co of Colorado Effective date: 2010/06/01 End date if known: Rate name: CUSTOMER-OWNED LIGHTING SERVICE - SCHEDULE COL - HPS 400w 2 Sector: Lighting Description: Applicable to the Colorado Department of Transportation and municipalities for Customer-Owned Lighting Service. This rate schedule is subject to all applicable Electric Rate Adjustments as on file and in effect in this tariff. Source or reference: http://www.xcelenergy.com/staticfiles/xe/Regulatory/Regulatory%20PDFs/psco_elec_entire_tariff.pdf

475

Data:1c82e1ee-9fa5-4d4e-999a-f41247c2deee | Open Energy Information  

Open Energy Info (EERE)

ee-9fa5-4d4e-999a-f41247c2deee ee-9fa5-4d4e-999a-f41247c2deee No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Public Service Co of Colorado Effective date: 2010/06/01 End date if known: Rate name: CUSTOMER-OWNED LIGHTING SERVICE - SCHEDULE COL- HPS 100w Sector: Lighting Description: Applicable to the Colorado Department of Transportation and municipalities for Customer-Owned Lighting Service. This rate schedule is subject to all applicable Electric Rate Adjustments as on file and in effect in this tariff. Source or reference: http://www.xcelenergy.com/staticfiles/xe/Regulatory/Regulatory%20PDFs/psco_elec_entire_tariff.pdf

476

Data:9947942b-49bb-45dc-9b29-8f97ba3694ed | Open Energy Information  

Open Energy Info (EERE)

2b-49bb-45dc-9b29-8f97ba3694ed 2b-49bb-45dc-9b29-8f97ba3694ed No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Public Service Co of Colorado Effective date: 2010/06/01 End date if known: Rate name: CUSTOMER-OWNED LIGHTING SERVICE - SCHEDULE COL - 24h HPS 400w Sector: Lighting Description: Applicable to the Colorado Department of Transportation and municipalities for Customer-Owned Lighting Service. This rate schedule is subject to all applicable Electric Rate Adjustments as on file and in effect in this tariff. Source or reference: http://www.xcelenergy.com/staticfiles/xe/Regulatory/Regulatory%20PDFs/psco_elec_entire_tariff.pdf

477

Data:8c7b0549-fada-43b0-a240-9d9c44222897 | Open Energy Information  

Open Energy Info (EERE)

49-fada-43b0-a240-9d9c44222897 49-fada-43b0-a240-9d9c44222897 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Public Service Co of Colorado Effective date: 2012/10/11 End date if known: Rate name: ENERGY ONLY STREET LIGHTING SERVICE - SCHEDULE ESL - 96.1-99.0 kWh per light Sector: Lighting Description: Source or reference: www.xcelenergy.com/staticfiles/xe/Regulatory/Regulatory PDFs/psco_elec_entire_tariff.pdf Source Parent: Comments Applicability Demand (kW) Minimum (kW): Maximum (kW): History (months): Energy (kWh) Minimum (kWh): Maximum (kWh): History (months): Service Voltage Minimum (V): Maximum (V):

478

U.S. Department of Energy Categorical Exclusion Determination Form  

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

Electrochemical Fluorination in Molten Fluoride Salts Electrochemical Fluorination in Molten Fluoride Salts Savannah River Site Aiken/Aiken/South Carolina This EEC covers activities in C105/110 related to development of an electrochemical fluorination process to separate selected metals (non- RCRA) from depleted uranium. The goal of the process is to convert depleted uranium metal (U) to gaseous uranium hexafluoride (UF6) that can be easily separated from solution while other metallic constituents remain as metals or are converted to non-volatile fluoride salts. The electrochemical fluorination process will be conducted in molten fluoride eutectic salts at temperatures above 300°C. The electrochemical fluorination process will be carried out using the fluorinating agents such as NF3, XeF2, and F2. Additional inert gases or vacuum may be used in

479

Hopper Software and Tools  

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

File Storage and I/O File Storage and I/O Software and Tools Debugging and profiling Performance and Optimization Cray XE Documentation Cluster Compatibility Mode Carver PDSF Genepool Testbeds Retired Systems Data & File Systems Network Connections Queues and Scheduling Job Logs & Analytics Training & Tutorials Software Accounts & Allocations Policies Data Analytics & Visualization Data Management Policies Science Gateways User Surveys NERSC Users Group User Announcements Help Operations for: Passwords & Off-Hours Status 1-800-66-NERSC, option 1 or 510-486-6821 Account Support https://nim.nersc.gov accounts@nersc.gov 1-800-66-NERSC, option 2 or 510-486-8612 Consulting http://help.nersc.gov consult@nersc.gov 1-800-66-NERSC, option 3 or 510-486-8611 Home » For Users » Computational Systems » Hopper » Software and Tools

480

PGAS Language Codes (UPC, CoArray Fortran) on Hopper  

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

PGAS PGAS Languages PGAS Language Codes (UPC, Coarray Fortran) Introduction PGAS (Partitioned Global Address Space) languages such as Unified Parallel C (UPC) and Coarray Fortran (CAF) are available with the Cray compilers. To use them, swap to the Cray programming environment and compile as usual with the Cray wrappers ftn and cc. See the examples below for command line usage. module swap PrgEnv-pgi PrgEnv-cray Using Large Pages Due to a hardware requirement, SHMEM, UPC, and CAF applications on Cray XE systems that use more than 2 GB of memory per compute node for static data must back the static data with huge pages. The 2 GB of static data per compute node is the sum of the static data used per core, multiplied by the number of cores used per compute node. It includes initialized data and

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481

ANL/MCS-TM-331 Mathematics and Computer Science Division Availability of This Report  

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

Performance Analysis of Darshan 2.2.3 Performance Analysis of Darshan 2.2.3 on the Cray XE6 Platform ANL/MCS-TM-331 Mathematics and Computer Science Division Availability of This Report This report is available, at no cost, at http://www.osti.gov/bridge. It is also available on paper to the U.S. Department of Energy and its contractors, for a processing fee, from: U.S. Department of Energy Office of Scientific and Technical Information P.O. Box 62 Oak Ridge, TN 37831-0062 phone (865) 576-8401 fax (865) 576-5728 reports@adonis.osti.gov Disclaimer This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor UChicago Argonne, LLC, nor any of their employees or officers, makes any warranty, express

482

Data:78420ba9-f6a3-41cd-8141-55e43f210d9f | Open Energy Information  

Open Energy Info (EERE)

ba9-f6a3-41cd-8141-55e43f210d9f ba9-f6a3-41cd-8141-55e43f210d9f No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Public Service Co of Colorado Effective date: 2010/06/01 End date if known: Rate name: CUSTOMER-OWNED LIGHTING SERVICE - SCHEDULE COL- HPS 1000w Sector: Lighting Description: Applicable to the Colorado Department of Transportation and municipalities for Customer-Owned Lighting Service. This rate schedule is subject to all applicable Electric Rate Adjustments as on file and in effect in this tariff. Source or reference: http://www.xcelenergy.com/staticfiles/xe/Regulatory/Regulatory%20PDFs/psco_elec_entire_tariff.pdf

483

Data:50c16450-21c4-4ea2-9476-4c96774559c1 | Open Energy Information  

Open Energy Info (EERE)

-21c4-4ea2-9476-4c96774559c1 -21c4-4ea2-9476-4c96774559c1 No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Public Service Co of Colorado Effective date: 2010/06/01 End date if known: Rate name: COMMERCIAL SERVICE - SCHEDULE C Sector: Commercial Description: Applicable to customers whose demands are less than 25 kW for electric power service supplied at secondary distribution voltage. Not applicable to standby or resale service. This rate schedule is subject to all applicable Electric Rate Adjustments as on file and in effect in this tariff. Source or reference: http://www.xcelenergy.com/staticfiles/xe/Regulatory/Regulatory%20PDFs/psco_elec_entire_tariff.pdf

484

Data:E4aa2be4-019e-4885-8ffe-ed7e653199de | Open Energy Information  

Open Energy Info (EERE)

019e-4885-8ffe-ed7e653199de 019e-4885-8ffe-ed7e653199de No revision has been approved for this page. It is currently under review by our subject matter experts. Jump to: navigation, search Loading... 1. Basic Information 2. Demand 3. Energy << Previous 1 2 3 Next >> Basic Information Utility name: Public Service Co of Colorado Effective date: 2012/10/11 End date if known: Rate name: ENERGY ONLY STREET LIGHTING SERVICE - SCHEDULE ESL - 21.1-24.0 kWh per light Sector: Lighting Description: Source or reference: www.xcelenergy.com/staticfiles/xe/Regulatory/Regulatory PDFs/psco_elec_entire_tariff.pdf Source Parent: Comments Applicability Demand (kW) Minimum (kW): Maximum (kW): History (months): Energy (kWh) Minimum (kWh): Maximum (kWh): History (months): Service Voltage Minimum (V): Maximum (V):

485

COE_NERSCtraining_Feb8_2011.pptx  

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

practices for writing and running mix- practices for writing and running mix- mode MPI and OpenMP codes on the Cray XE6 LBNL NERSC Nicholas J Wright, Karl Fuerlinger, John Shalf LBNL Computing Research Division Hongzhang Shan, Tony Drummond, Andrew Canning PPPL Stephane Ethier Cray Inc. Nathan Wichmann, Marcus Wagner, Sarah Anderson, Ryan Olsen, Mike Aamodt 2 The Multicore era * Moore's Law continues * Traditional sources of performance improvement ending - Old Trend: double clock frequency every 18 th months - New Trend: Double # cores every 18 months * Power limits drive a number of Broader Technology Trends - Number Cores  - Memory Capacity per core flat or  - Memory Bandwidth per FLOP  - Network Bandwidth per FLOP  Figure courtesy of Kunle Olukotun, Lance Hammond, Herb Sutter, and Burton Smith

486

Cray XC30 User Documentation  

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

Cray XC30 Cray XC30 Documentation Cray XC30 User Documentation L Cray XC30 Documentation Search Preferences | Advanced Search Home Browse Books Man Pages Glossary Platforms Cray XC30 Cray XE and Cray XK Cray XT Cray Sonexion Cray X2 Cray X1 Knowledge Base by Category by Date by Platform by Title by User Release Announcements @Twitter Cray XC30 System Documentation This site map also contains legacy documentation. Always consult the latest version of documentation for your site-specific configuration and ask your Cray Customer Service representative for additional guidance on the latest software documents. Getting Started Cray Linux Environment (CLE) Software Release Overview Programming Environment Cray Programming Environments User Guide Cray Compiling Environment (CCE) Cray Fortran Reference Manual

487

Site-Selective Ionization in Nanoclusters Affects Subsequent Fragmentation  

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

Site-Selective Ionization in Nanoclusters Affects Subsequent Fragmentation Print Site-Selective Ionization in Nanoclusters Affects Subsequent Fragmentation Print Understanding charge-transfer processes at the atomic level of nanoscale systems is of the utmost importance for designing nanodevices based on quantum-dot structures, nanotubes, or two-dimensional graphene sheets. Researchers from Western Michigan University, Berkeley Lab, and other international research facilities investigated charge-transfer processes and subsequent ion fragmentation dynamics in nanoclusters composed of argon (Ar) shells and xenon (Xe) cores. The clusters were site-selectively ionized (i.e, ionization took place either in the xenon core or in the argon shell). Using a high-resolution photoelectron-ion coincidence technique at ALS Beamlines 10.0.1 and 11.0.2, the re