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OECD MCCI project Melt Eruption Test (MET) design report, Rev. 2. April 15, 2003.

Description: The Melt Attack and Coolability Experiments (MACE) program at Argonne National Laboratory addressed the issue of the ability of water to cool and thermally stabilize a molten core-concrete interaction when the reactants are flooded from above. These tests provided data regarding the nature of corium interactions with concrete, the heat transfer rates from the melt to the overlying water pool, and the role of noncondensable gases in the mixing processes that contribute to melt quenching. The Mel… more
Date: May 23, 2011
Creator: Farmer, M. T.; Lomperski, S.; Kilsdonk, D. J.; Aeschlimann, R. W. & Basu, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

LONG-TERM PERFORMANCE OF SOLID OXIDE STACKS WITH ELECTRODE-SUPPORTED CELLS OPERATING IN THE STEAM ELECTROLYSIS MODE

Description: Performance characterization and durability testing have been completed on two five-cell high-temperature electrolysis stacks constructed with advanced cell and stack technologies. The solid oxide cells incorporate a negative-electrode-supported multi-layer design with nickel-zirconia cermet negative electrodes, thin-film yttria-stabilized zirconia electrolytes, and multi-layer lanthanum ferrite-based positive electrodes. The per-cell active area is 100 cm2. The stack is internally manifolded w… more
Date: November 1, 2011
Creator: O'Brien, J. E.; O'Brien, R. C.; Zhang, X.; Tao, G. & Butler, B. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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A Distributed Electrochemistry Modeling Tool for Simulating SOFC Performance and Degradation

Description: This report presents a distributed electrochemistry (DEC) model capable of investigating the electrochemistry and local conditions with the SOFC MEA based on the local microstructure and multi-physics. The DEC model can calculate the global current-voltage (I-V) performance of the cell as determined by the spatially varying local conditions through the thickness of the electrodes and electrolyte. The simulation tool is able to investigate the electrochemical performance based on characteristics… more
Date: October 13, 2011
Creator: Recknagle, Kurtis P.; Ryan, Emily M. & Khaleel, Mohammad A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Hierarchical Nanoceramics for Industrial Process Sensors

Description: This project developed a robust, tunable, hierarchical nanoceramics materials platform for industrial process sensors in harsh-environments. Control of material structure at multiple length scales from nano to macro increased the sensing response of the materials to combustion gases. These materials operated at relatively high temperatures, enabling detection close to the source of combustion. It is anticipated that these materials can form the basis for a new class of sensors enabling widespre… more
Date: July 15, 2011
Creator: Ruud, James, A.; Brosnan, Kristen, H.; Striker, Todd; Ramaswamy, Vidya; Aceto, Steven, C.; Gao, Yan et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Li+ alumino-silicate ion source development for the Neutralized Drift Compression Experiment (NDCX-II)

Description: To heat targets to electron-volt temperatures for the study of warm dense matter with intense ion beams, low mass ions, such as lithium, have an energy loss peak (dE/dx) at a suitable kinetic energy. The Heavy Ion Fusion Sciences (HIFS) program at Lawrence Berkeley National Laboratory will carry out warm dense matter experiments using Li{sup +} ion beam with energy 1.2-4 MeV in order to achieve uniform heating up to 0.1-1 eV. The accelerator physics design of Neutralized Drift Compression Exper… more
Date: April 20, 2011
Creator: LBNL; Roy, P. K.; Greenway, W.; Kwan, J. W.; Seidl, P. A. & Waldron, W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

FY2011 Progress Report: Agreement 8697 - NOx Sensor Development

Description: Objectives are: (1) Develop an inexpensive, rapid-response, high-sensitivity and selective electrochemical sensor for oxides of nitrogen (NO{sub x}) for compression-ignition, direct-injection (CIDI) OBD II systems; (2) Explore and characterize novel, effective sensing methodologies based on impedance measurements and designs and manufacturing methods that are compatible with mass fabrication; and (3) Collaborate with industry in order to (ultimately) transfer the technology to a supplier for co… more
Date: November 1, 2011
Creator: Woo, L. Y. & Glass, R. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Final Report - Membranes and MEA's for Dry, Hot Operating Conditions

Description: The focus of this program was to develop a new Proton Exchange Membrane (PEM) which can operate under hotter, dryer conditions than the state of the art membranes today and integrate it into a Membrane Electrode Assembly (MEA). These MEA's should meet the performance and durability requirements outlined in the solicitation, operating under low humidification conditions and at temperatures ranging from -20ºC to 120ºC, to meet 2010 DOE technical targets for membranes. This membrane … more
Date: June 30, 2011
Creator: Hamrock, Steven J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Equilibrium and Stability of Partial Toroidal Plasma Discharges

Description: The equilibrium and stability of partial toroidal flux ropes are studied in detail in the laboratory, motivated by ubiquitous loop structures on the solar surface. The flux ropes studied here are magnetized arc discharges formed in the Magnetic Reconnection Experiment (MRX). It is found that these loops robustly maintain their equilibrium on time scales much longer than the Alfven time over a wide range of plasma current, guide eld strength, and angle between electrodes, even in the absence of … more
Date: January 4, 2011
Creator: E. Oz, C. E. Myers, M. Yamada, H. Ji, R. Kulsrud, and J. Xie
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

STRIPLINE KICKER DESIGN FOR NSLS2 STORAGE RING

Description: In the NSLS2 storage ring, there are four stripline kickers/pickups. Two long striplines with electrode length of 30cm will be used as bunch-by-bunch transverse feedback actuators. Two short stripline kickers/pickups with 15cm length will mainly used for tune measurement excitation or signal pickup for the beam stability monitor. High shunt impedance of the long stripline kickers is demanded to produce 200 {micro}s damping time. Meanwhile the beam impedance should be minimized. The design work … more
Date: March 28, 2011
Creator: Cheng, W.; Blednykh, A.; Krinsky, S. & Singh, O.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Lithium Wall Conditioning And Surface Dust Detection On NSTX

Description: Lithium evaporation onto NSTX plasma facing components (PFC) has resulted in improved energy confinement, and reductions in the number and amplitude of edge-localized modes (ELMs) up to the point of complete ELM suppression. The associated PFC surface chemistry has been investigated with a novel plasma material interface probe connected to an in-vacuo surface analysis station. Analysis has demonstrated that binding of D atoms to the polycrystalline graphite material of the PFCs is fundamentally… more
Date: May 23, 2011
Creator: Skinner, C. H.; Bell, M. G.; Friesen, F. Q. L.; Heim, B.; Jaworski, M. A.; Kugel, H. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Built-in and Induced Polarization Across LaAlO3/SrTiO3 Heterojunctions

Description: Ionic crystals terminated at oppositely charged polar surfaces are inherently unstable and expected to undergo surface reconstructions to maintain electrostatic stability. Essentially, an electric field that arises between oppositely charged atomic planes gives rise to a built-in potential that diverges with thickness. Here we present evidence of such a built-in potential across polar LaAlO{sub 3} thin films grown on SrTiO{sub 3} substrates, a system well known for the electron gas that forms a… more
Date: August 15, 2011
Creator: Guneeta, Singh-Bhalla
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Ion trapping study in eRHIC

Description: The ion trapping effect is an important beam dynamics issue in energy recovery linac (ERL). The ionized residue gas molecules can accumulate at the vicinity of the electron beam path and deteriorate the quality of the electron beam. In this paper, we present calculation results to address this issue in eRHIC and find best beam pattern to eliminate this effect. eRHIC is the future electron ion collider(EIC), which collides 5GeV to 30GeV electron beam from a new electron accelerator with the ion … more
Date: March 28, 2011
Creator: Hao, Y.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

TUNING OF SIZE AND SHAPE OF AU-PT NANOCATALYST FOR DIRECT METHANOL FUEL CELLS

Description: In this paper, we report the precise control of the size, shape and surface morphology of Au-Pt nanocatalysts (cubes, blocks, octahedrons and dogbones) synthesized via a seed-mediated approach. Gold 'seeds' of different aspect ratios (1 to 4.2), grown by a silver-assisted approach, were used as templates for high-yield production of novel Au-Pt nanocatalysts at a low temperature (40 C). Characterization by electron microscopy (SEM, TEM, HRTEM), energy dispersive X-ray analysis (EDX), UV-Vis spe… more
Date: April 20, 2011
Creator: Murph, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Test Beam Results of 3D Silicon Pixel Sensors for the ATLAS upgrade

Description: Results on beam tests of 3D silicon pixel sensors aimed at the ATLAS Insertable-B-Layer and High Luminosity LHC (HL-LHC) upgrades are presented. Measurements include charge collection, tracking efficiency and charge sharing between pixel cells, as a function of track incident angle, and were performed with and without a 1.6 T magnetic field oriented as the ATLAS Inner Detector solenoid field. Sensors were bump bonded to the front-end chip currently used in the ATLAS pixel detector. Full 3D sens… more
Date: August 19, 2011
Creator: Grenier, P.; Alimonti, G.; Barbero, M.; Bates, R.; Bolle, E.; Borri, M. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Effect of Surface Flow on Topography in Niobium Electropolishing

Description: Electropolishing (EP) is reliably delivering improved performance of multi-celled niobium SRF accelerator cavities, attributed to the smoother surface obtained. This superior leveling is a consequence of an etchant concentration gradient layer that arises in the HF-H2SO4 electrolyte adjacent to the niobium surface during polishing. Electrolyte circulation raises the prospect that fluid flow adjacent to the surface might affect the diffusion layer and impair EP performance. In this study, prelim… more
Date: March 1, 2011
Creator: Kelley, M. J.; Reece, C. E. & Zhao, L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

DATA SUMMARY REPORT SMALL SCALE MELTER TESTING OF HLW ALGORITHM GLASSES MATRIX1 TESTS VSL-07S1220-1 REV 0 7/25/07

Description: Eight tests using different HLW feeds were conducted on the DM100-BL to determine the effect of variations in glass properties and feed composition on processing rates and melter conditions (off-gas characteristics, glass processing, foaming, cold cap, etc.) at constant bubbling rate. In over seven hundred hours of testing, the property extremes of glass viscosity, electrical conductivity, and T{sub 1%}, as well as minimum and maximum concentrations of several major and minor glass components w… more
Date: December 29, 2011
Creator: AA, KRUGER; KS, MATLACK & IL, PEGG
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Buffered Electrochemical Polishing of Niobium

Description: The standard preparation of superconducting radio-frequency (SRF) cavities made of pure niobium include the removal of a 'damaged' surface layer, by buffered chemical polishing (BCP) or electropolishing (EP), after the cavities are formed. The performance of the cavities is characterized by a sharp degradation of the quality factor when the surface magnetic field exceeds about 90 mT, a phenomenon referred to as 'Q-drop'. In cavities made of polycrystalline fine grain (ASTM 5) niobium, the Q-dro… more
Date: March 1, 2011
Creator: Gianluigi Ciovati, Hui Tian, Sean Corcoran
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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AUTOMATED LEAK DETECTION OF BURIED TANKS USING GEOPHYSICAL METHODS AT THE HANFORD NUCLEAR SITE

Description: At the Hanford Nuclear Site in Washington State, the Department of Energy oversees the containment, treatment, and retrieval of liquid high-level radioactive waste. Much of the waste is stored in single-shelled tanks (SSTs) built between 1943 and 1964. Currently, the waste is being retrieved from the SSTs and transferred into newer double-shelled tanks (DSTs) for temporary storage before final treatment. Monitoring the tanks during the retrieval process is critical to identifying leaks. An elec… more
Date: March 30, 2011
Creator: S, CALENDINE; JS, SCHOFIELD; MT, LEVITT; JB, FINK & DF, RUCKER
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Improved Electrodes and Electrolytes for Dye-Based Solar Cells

Description: The most important factor in limiting the stability of dye-sensitized solar cells is the use of volatile liquid solvents in the electrolytes, which causes leakage during extended operation especially at elevated temperatures. This, together with the necessary complex sealing of the cells, seriously hampers the industrial-scale manufacturing and commercialization feasibilities of DSSCs. The objective of this program was to bring about a significant improvement in the performance and longevity of… more
Date: October 26, 2011
Creator: Allcock, Harry R.; Mallouk, Thomas E. & Horn, Mark W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Six Thousand Electrochemical Cycles of Double-Walled Silicon Nanotube Anodes for Lithium Ion Batteries

Description: Despite remarkable progress, lithium ion batteries still need higher energy density and better cycle life for consumer electronics, electric drive vehicles and large-scale renewable energy storage applications. Silicon has recently been explored as a promising anode material for high energy batteries; however, attaining long cycle life remains a significant challenge due to materials pulverization during cycling and an unstable solid-electrolyte interphase. Here, we report double-walled silicon… more
Date: August 18, 2011
Creator: Wu, H
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Wave-Driven Rotation In Centrifugal Mirrors

Description: Centrifugal mirrors use supersonic rotation to provide axial confinement and enhanced stability. Usually the rotation is produced using electrodes, but these electrodes have limited the rotation to the Alfven critical ionization velocity, which is too slow to be useful for fusion. Instead, the rotation could be produced using radio frequency waves. A fixed azimuthal ripple is a simple and efficient wave that could produce rotation by harnessing alpha particle energy. This is an extension of the… more
Date: March 28, 2011
Creator: Fisch, Abraham J. Fetterman and Nathaniel J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Performance Assessment of Single Electrode-Supported Solid Oxide Cells Operating in the Steam Electrolysis Mode

Description: An experimental study is under way to assess the performance of electrode-supported solid-oxide cells operating in the steam electrolysis mode for hydrogen production. Results presented in this paper were obtained from single cells, with an active area of 16 cm{sup 2} per cell. The electrolysis cells are electrode-supported, with yttria-stabilized zirconia (YSZ) electrolytes ({approx}10 {mu}m thick), nickel-YSZ steam/hydrogen electrodes ({approx}1400 {mu}m thick), and modified LSM or LSCF air-s… more
Date: November 1, 2011
Creator: Zhang, X.; O'Brien, J. E.; O'Brien, R. C. & Petigny, N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Understanding the function and performance of carbon-enhanced lead-acid batteries : milestone report for the DOE Energy Storage Systems program (FY11 Quarter 1: October through December 2010).

Description: This report describes the status of research being performed under CRADA No. SC10/01771.00 (Lead/Carbon Functionality in VRLA Batteries) between Sandia National Laboratories and East Penn Manufacturing, conducted for the U.S. Department of Energy's Energy Storage Systems Program. The Quarter 1 Milestone was completed on time. The milestone entails conducting a thorough literature review to establish the current level of understanding of the mechanisms through which carbon additions to the negat… more
Date: May 1, 2011
Creator: Shane, R. (East Penn Manufacturing, Lyon Station, PA); Enos, David George & Hund, Thomas D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Energy Systems Fabrication Laboratory (Fact Sheet)

Description: This fact sheet describes the purpose, lab specifications, applications scenarios, and information on how to partner with NREL's Energy Systems Fabrication Laboratory at the Energy Systems Integration Facility. The Energy Systems Fabrication Laboratory at NREL's Energy Systems Integration Facility (ESIF) manufactures components for fuel cells and electrochemical cells using a variety of manufacturing techniques. Fabricated components include catalysts, thin-film and gas diffusion electrodes, an… more
Date: October 1, 2011
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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