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First Principles Study of Double Photoionization of H2 UsingExterior Complex Scaling

Description: Exterior complex scaling provides a practical path forfirst-principles studies of atomic and molecular ionizationproblemssince it avoids explicit enforcement of asymptotic boundary conditionsfor 3-body Coulomb breakup. We have used the method of exterior complexscaling, implemented with both the discrete variable representation andB-splines, to obtain the first-order wave function for molecular hydrogencorresponding to a single photon having been absorbed by a correlatedinitial state. These wav… more
Date: July 21, 2006
Creator: Rescigno, Thomas N.; Vanroose, Wim; Horner, Daniel A.; Martin,Fernando & McCurdy, C. William
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Germanium: From Its Discovery to SiGe Devices

Description: Germanium, element No.32, was discovered in 1886 by Clemens Winkler. Its first broad application was in the form of point contact Schottky diodes for radar reception during WWII. The addition of a closely spaced second contact led to the first all-solid-state electronic amplifier device, the transistor. The relatively low bandgap, the lack of a stable oxide and large surface state densities relegated germanium to the number 2 position behind silicon. The discovery of the lithium drift process, … more
Date: June 14, 2006
Creator: Haller, E.E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Effect of Lithium PFC Coatings on NSTX Density Control

Description: Lithium coatings on the graphite plasma facing components (PFCs) in NSTX are being investigated as a tool for density profile control and reducing the recycling of hydrogen isotopes. Repeated lithium pellet injection into Center Stack Limited and Lower Single Null Ohmic Helium Discharges were used to coat graphite surfaces that had been pre-conditioned with Ohmic Helium Discharges of the same shape to reduce their contribution to hydrogen isotope recycling. The following deuterium NBI reference… more
Date: August 21, 2006
Creator: Kugel, H W; Bell, M G; Bush, C; Gates, D; Gray, T; Kaita, R et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Dual-Environment Effects on the Oxidation of Metallic Interconnects

Description: Metallic interconnects in solid oxide fuel cells are exposed to a dual environment: fuel on one side (i.e., H2 gas) and oxidizer on the other side (i.e., air). It has been observed that the oxidation behavior of thin stainless steel sheet in air is changed by the presence of H2 on the other side of the sheet. The resulting dual-environment scales are flaky and more friable than the single-environment scales. The H2 disrupts the scale on the air side. A model to explain some of the effects of a … more
Date: 2006-08~
Creator: Holcomb, Gordon R.; Ziomek-Moroz, Malgorzata; Cramer, Stephen D.; Covino, Bernard S., Jr. & Bullard, Sohpie J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Calculation of Radiative Corrections to Hyperfine Splitting in p1/2 States

Description: Techniques to calculate one-loop radiative corrections to hyperfine splitting including binding corrections to all orders have been developed in the last decade for s states of atoms and ions. In this paper these methods are extended to p{sub 1/2} states for three cases. In the first case, the point-Coulomb 2p{sub 1/2} hyperfine splitting is treated for the hydrogen isoelectronic sequence, and the lowest order result, {alpha}/4{pi} E{sub F}, is shown to have large binding corrections at high Z.… more
Date: September 20, 2006
Creator: Sapirstein, J & Cheng, K T
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Test of weak and strong factorization in nucleus-nucleuscollisions atseveral hundred MeV/nucleon

Description: Total and partial charge-changing cross sections have been measured for argon projectiles at 400 MeV/nucleon in carbon, aluminum, copper, tin and lead targets; cross sections for hydrogen were also obtained, using a polyethylene target. The validity of weak and strong factorization properties has been investigated for partial charge-changing cross sections; preliminary cross section values obtained for carbon, neon and silicon at 290 and 400 MeV/nucleon and iron at 400 MeV/nucleon, in carbon, a… more
Date: June 21, 2006
Creator: La Tessa, Chiara; Sihver, Lembit; Zeitlin, Cary; Miller, Jack; Guetersloh, Stephen; Heilbronn, Lawrence et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Corrosion Performance of Ferritic Steel for SOFC Interconnect Applications

Description: Ferritic stainless steels have been identified as potential candidates for interconnects in planar-type solid oxide fuel cells (SOFC) operating below 800ºC. Crofer 22 APU was selected for this study. It was studied under simulated SOFC-interconnect dual environment conditions with humidified air on one side of the sample and humidified hydrogen on the other side at 750ºC. The surfaces of the oxidized samples were studied by scanning electron microscopy (SEM) equipped with microanalytical capabi… more
Date: November 1, 2006
Creator: Ziomek-Moroz, M.; Holcomb, G. R.; Covino, B. S., Jr.; Bullard, S. J.; Jablonski, P. D. & Alman, D. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Results of the 2004 Knowledge and Opinions Surveys for the Baseline Knowledge Assessment of the U.S. Department of Energy Hydrogen Program

Description: The U.S. Department of Energy (DOE) Hydrogen Program focuses on overcoming critical barriers to the widespread use of hydrogen fuel cell technology. The transition to a new, hydrogen-based energy economy requires an educated human infrastructure. With this in mind, the DOE Hydrogen Program conducted statistical surveys to measure and establish baselines for understanding and awareness about hydrogen, fuel cells, and a hydrogen economy. The baseline data will serve as a reference in designing an… more
Date: April 1, 2006
Creator: Schmoyer, Richard L; Truett, Lorena Faith & Cooper, Christy
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Simulation of lean premixed turbulent combustion

Description: There is considerable technological interest in developingnew fuel-flexible combustion systems that can burn fuels such ashydrogenor syngas. Lean premixed systems have the potential to burn thesetypes of fuels with high efficiency and low NOx emissions due to reducedburnt gas temperatures. Although traditional scientific approaches basedon theory and laboratory experiment have played essential roles indeveloping our current understanding of premixed combustion, they areunable to meet the challe… more
Date: June 25, 2006
Creator: Bell, John B.; Day, Marcus S.; Almgren, Ann S.; Lijewski, MichaelJ.; Rendleman, Charles A.; Cheng, Robert K. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department

Results from the Vehicle/Infrastructure Learning Demonstration Project

Description: The objectives of this report are to: (1) validate H{sub 2} FC vehicles and infrastructure in parallel; (2) identify current status of technology and its evolution; (3) re-focus H{sub 2} research and development; and (4) support technology readiness milestone by 2015.
Date: May 18, 2006
Creator: Wipke, K.; Welch, C.; Thomas, H. & Sprik, S.
Item Type: Refine your search to only Presentation
Partner: UNT Libraries Government Documents Department
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FutureGen: Stepping-Stone to Sustainable Fossil-Fuel Power Generation

Description: This presentation will highlight the U.S. Department of Energy's FutureGen Initiative. The nearly $1 billion government-industry project is a stepping-stone toward future coal-fired power plants that will produce hydrogen and electricity with zero-emissions, including carbon dioxide. The 275-megawatt FutureGen plant will initiate operations around 2012 and employ advanced coal gasification technology integrated with combined cycle electricity generation, hydrogen production, and carbon capture … more
Date: November 1, 2006
Creator: Zitney, S. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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HYDROGEN ELECTROLYZER FLOW DISTRIBUTOR MODEL

Description: The hybrid sulfur process (HyS) hydrogen electrolyzer consists of a proton exchange membrane (PEM) sandwiched between two porous graphite layers. An aqueous solution of sulfuric acid with dissolved SO{sub 2} gas flows parallel to the PEM through the porous graphite layer on the anode side of the electrolyzer. A flow distributor, consisting of a number of parallel channels acting as headers, promotes uniform flow of the anolyte fluid through the porous graphite layer. A numerical model of the hy… more
Date: September 28, 2006
Creator: Shadday, M
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Characterization of Hydrogen Complex Formation in III-V Semiconductors

Description: Atomic hydrogen has been found to react with some impurity species in semiconductors. Hydrogenation is a methodology for the introduction of atomic hydrogen into the semiconductor for the express purpose of forming complexes within the material. Efforts to develop hydrogenation as an isolation technique for AlGaAs and Si based devices failed to demonstrate its commercial viability. This was due in large measure to the low activation energies of the formed complexes. Recent studies of dopant pas… more
Date: September 28, 2006
Creator: Williams, Michael D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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SLUDGE BATCH 4 SIMULANT FLOWSHEET STUDIES: PHASE II RESULTS

Description: The Defense Waste Processing Facility (DWPF) will transition from Sludge Batch 3 (SB3) processing to Sludge Batch 4 (SB4) processing in early fiscal year 2007. Tests were conducted using non-radioactive simulants of the expected SB4 composition to determine the impact of varying the acid stoichiometry during the Sludge Receipt and Adjustment Tank (SRAT) process. The work was conducted to meet the Technical Task Request (TTR) HLW/DWPF/TTR-2004-0031 and followed the guidelines of a Task Technical… more
Date: September 12, 2006
Creator: Stone, M & David Best, D
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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MODIFIED BOROHYDRIDES FOR REVERSIBLE HYDROGEN STORAGE

Description: This paper reports the results in the effort to destabilize lithium borohydride for reversible hydrogen storage. A number of metals, metal hydrides, metal chlorides and complex hydrides were selected and evaluated as the destabilization agents for reducing dehydriding temperature and generating dehydriding-rehydriding reversibility. It is found that some additives are effective. The Raman spectroscopic analysis shows the change of B-H binding nature.
Date: May 10, 2006
Creator: Au, Ming
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Oak Ridge National Laboratory Annual Progress Report for the Power Electronics and Electric Machinery Program

Description: The U.S. Department of Energy (DOE) and the U.S. Council for Automotive Research (composed of automakers Ford, General Motors, and DaimlerChrysler) announced in January 2002 a new cooperative research effort. Known as FreedomCAR (derived from 'Freedom' and 'Cooperative Automotive Research'), it represents DOE's commitment to developing public/private partnerships to fund high-risk, high-payoff research into advanced automotive technologies. Efficient fuel cell technology, which uses hydrogen to… more
Date: October 31, 2006
Creator: Olszewski, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Electron emission and defect formation in the interaction of slow,highly charged ions with diamond surfaces

Description: We report on electron emission and defect formation in theinteraction between slow (v~;0.3 vBohr) highly charged ions (SHCI) withinsulating (type IIa) and semiconducting (type IIb) diamonds. Electronemission induced by 31Pq+ (q=5 to 13), and 136Xeq+ (q=34 to 44) withkinetic energies of 9 kVxq increase linearly with the ion charge states,reaching over 100 electrons per ion for high xenon charge states withoutsurface passivation of the diamond with hydrogen. Yields from bothdiamond types are up t… more
Date: May 31, 2006
Creator: Sideras-Haddad, E.; Shrivastava, S.; Rebuli, D.B.; Persaud, A.; Schneider, D.H. & Schenkel, T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Computational Thermochemistry and Benchmarking of Reliable Methods

Description: During the first and second years of the Computational Thermochemistry and Benchmarking of Reliable Methods project, we completed several studies using the parallel computing capabilities of the NWChem software and Molecular Science Computing Facility (MSCF), including large-scale density functional theory (DFT), second-order Moeller-Plesset (MP2) perturbation theory, and CCSD(T) calculations. During the third year, we continued to pursue the computational thermodynamic and benchmarking studies… more
Date: June 20, 2006
Creator: Feller, David F.; Dixon, David A.; Dunning, Thom H.; Dupuis, Michel; McClemore, Doug; Peterson, Kirk A. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Establishment of an Environmental Control Technology Laboratory with a Circulating Fluidized-Bed Combustion System

Description: This report is to present the progress made on the project ''Establishment of an Environmental Control Technology Laboratory (ECTL) with a Circulating Fluidized-Bed Combustion (CFBC) System'' during the period January 1, 2006 through March 31, 2006. Work was performed on the following activities. First, the fabrication and manufacture of the CFBC Facility were completed. The riser, primary cyclone and secondary cyclone of Circulating Fluidized Bed (CFB) Combustor have been erected. Second, the … more
Date: April 1, 2006
Creator: Pan, Wei-Ping; Cao, Yan & Li, Songgeng
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Hydrogen Production via a Commercially Ready Inorganic Membrane Reactor, Semi-Annual Technical Progress Report: October 200[5] - March 2006

Description: One of the technical barriers for ceramic membranes is its scale up potential. The conventional ceramic membranes/modules originally developed for liquid phase applications are costly and not suitable for high temperature applications. One of the objectives under this project is the development of a ceramic membrane/module, which is economical and suitable for high temperature applications proposed under this project (200-300 C). During this period, we initiated the fabrication of a prototype c… more
Date: May 31, 2006
Creator: Liu, Paul K. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Alkaline Electrolysis Final Technical Report

Description: In this project, GE developed electrolyzer stack technologies to meet DOE’s goals for low cost electrolysis hydrogen. The main barrier to meeting the targets for electrolyzer cost was in stack assembly and construction. GE’s invention of a single piece or “monolithic” plastic electrolyzer stack reduces these costs considerably. In addition, GE developed low cost cell electrodes using a novel application of metal spray coating technology. Bench scale stack testing and cost modeling indicates tha… more
Date: July 13, 2006
Creator: Bourgeois, RIchard; Sanborn, Steven & Assimakopoulos, Eliot
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Long term biosustainability in a high energy, low diversity crustal biome

Description: Geochemical, microbiological, and molecular analyses of alkaline saline groundwater at 2.8 kilometers depth in Archaean metabasalt revealed a microbial biome dominated by a single phylotype affiliated with thermophilic sulfate reducers belonging to Firmicutes. These sulfate reducers were sustained by geologically produced sulfate and hydrogen at concentrations sufficient to maintain activities for millions of years with no apparent reliance on photosynthetically derived substrates.
Date: October 1, 2006
Creator: Lin, L-H.; Wang, P-L.; Rumble, D.; Lippmann-Pipke, J.; SherwoodLollar, B.; Boice, E. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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