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An Anode-Channel Source for Positive Ion Beams

Description: The dependence of the ion output on several variables was studied thoroughly and the point of optimum operatio was determined. Mercury ions were used and certain observed effects were ascribed to the presence of heavier ions.
Date: 1942
Creator: Schmitthenner, F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Electrochemical cell for in-situ x-ray characterization

Description: An electrochemical cell suitable for in-situ XRD analysis is presented. Qualitative information such as phase formation and phase stability can be easily monitored using the in-situ cell design. Quantitative information such as lattice parameters and kinetic behavior is also straightforward. Analysis of the LiMn&sub2;O&sub4; spinel using this cell design shows that the lattice undergoes two major structural shrinkages at approx. 4.0 V and approx. 4.07 V during charging. These shrinkages correla… more
Date: August 4, 1998
Creator: Doughty, Daniel H.; Ingersoll, David & Rodriguez, Mark A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Inert anodes and advanced smelting of aluminum

Description: This report provides a broad assessment of open literature and patents that exist in the area of inert anodes and their related cathode systems and cell designs, technologies that are relevant for the advanced smelting of aluminum. The report also discusses the opportunities, barriers, and issued associated with these technologies from a technical, environmental, and economic viewpoint. It discusses the outlook for the direct retrofit of advanced reduction technologies to existing aluminum smel… more
Date: July 1, 1999
Creator: Technologies, ASME Technical Working Group on Inert Anode
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

Effect of Sulfur and Hydrocarbon Fuels on Titanate/Ceria SOFC Anodes

Description: The purpose of the project is to develop low-cost, high-performance anodes that offer low polarization resistance as well as improved tolerance for nonidealities in anode environment such as redox cycles, sulfur and other poisons, and hydrocarbons.
Date: January 27, 2005
Creator: Marina, O.A.; Pedersen, L.R. & Stevenson, J.W.
Item Type: Refine your search to only Presentation
Partner: UNT Libraries Government Documents Department
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USE OF COUPLED MULTI-ELECTRODE ARRAYS TO ADVANCE THE UNDERSTANDING OF SELECTED CORROSION PHENOMENA

Description: The use of multi-coupled electrode arrays in various corrosion applications is discussed with the main goal of advancing the understanding of various corrosion phenomena. Both close packed and far spaced electrode configurations are discussed. Far spaced electrode arrays are optimized for high throughput experiments capable of elucidating the effects of various variables on corrosion properties. For instance the effects of a statistical distribution of flaws on corrosion properties can be exami… more
Date: February 23, 2006
Creator: Budiansky, N.D.; Bocher, F.; Cong, H.; Hurley, M.F. & Scully, J.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Flash X-Ray Injector Study

Description: The study described in this report1 models the FXR injector from the cathode to the exit of the injector. The calculations are compared to actual experimental measurements, table 1. In these measurements the anode voltage was varied by changing the Marks-Bank charging voltage. The anode-cathode spacing was varied by adjusting the location of the cathode in hopes of finding an island of minimum emittance (none found). The bucking coil current was set for zero field on the cathode. In these measu… more
Date: March 26, 2004
Creator: Paul, A C
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Anodic Etching Procedure for Uranium: Useful Lifetime of Baths Without Regeneration

Description: The useful lifetimes of the phosphoric-hydrochloric anodic etching solution and the nitric acid stripping solutions were studied. Groups of uranium wafers of surface areas approximately 0.033 sq ft were anodically etched and stripped. From the losses in weight observed, it was concluded that at least three square feet of uranium may be anodized per liter of phosphoric-hydrochloric acid solution without regeneration. The nitric acid stripping solution was found to be satisfactory for at least on… more
Date: December 14, 1954
Creator: Pitzer, E.C.; Katayama, Y. B. & Budke, W. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Edge reclamation in position-sensitive photomultiplier tubes

Description: We have investigated the performance of a position-sensitive, gamma-ray detector based on a CsI(Na) scintillator coupled to a Hamamatsu R3292 Position-Sensitive Photomultiplier Tube (PSPMT). The R3292 has an active area 10.0 cm in diameter (quoted). Utilization of the full active area of the photocathode is a goal that has been previously unrealized due to edge effects. Initial measurements with a 0.75 cm thick CsI(Na) crystal indicate that the performance (position resolution linearity) starts… more
Date: June 16, 1999
Creator: Nakae, L. F. & Ziock, K. P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Corrosion prevention of Oregon's reinforced coastal bridges

Description: The Oregon Department of Transportation (Oregon DOT) maintains more than 120 coastal bridges; many are reinforced concrete structures over 15 m (50 ft) in length. Twelve of these bridges are historic structures. Oregon DOT is concerned about the ongoing deterioration of these bridges, rising maintenance and repair costs, and the need to protect Oregon’s large investment in coastal bridges. Over 80,000 m2 (850,000 ft2) of coastal bridge surface have been repaired and protected from further chlor… more
Date: June 1, 2004
Creator: Bullard, Sophie J.; Cramer, Stephen D.; Covino, Bernard S., Jr.; Holcomb, Gordon R.; Ziomek-Moroz, Margaret; Cryer. C.B (Oregon Dept. of Transportation, Salem, OR) et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Low cost MCFC anodes

Description: This paper outlines a project, funded under a DOE SBIR grant, which tested a potentially lower cost method of manufacturing MCFC stack anodes and evaluated the feasibility of using the technology in the existing M-C Power Corp. manufacturing facility. The procedure involves adding activator salts to the anode tape casting slurry with the Ni and Cr or Al powders. Two different processes occur during heat treatment in a reducing environment: sintering of the base Ni structure, and alloying or cem… more
Date: December 31, 1996
Creator: Erickson, D.S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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IGT Stack No. 6 (SDG{ampersand}E-1) Test Plan and Component Specification Document: Topical report, March 1996

Description: The purpose of Stack-6 (SDG{ampersand}E-1) is to scale up and demonstrate the long term performance and endurance characteristics of the IMHEX stack design and the Generation No. 2 cell components (improved pore matching electrodes) in a 20 cell subscale stack test.
Date: December 31, 1997
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effect on Performance of Composition of Li-Ion Carbon Anodes Derived from PMAN/DVB Copolymers

Description: The effects on electrochemical performance of the nitrogen content of disordered carbons derived from polymethacryonitrile (PMAN)-divinylbenzene (DVB) copolymers were examined in galvanostatic cycling tests between 2 V and 0.01 V vs. Li/Li+ in lM LiPF<sub>6</sub>/ethylene carbonate (EC)-dimethyl carbonate (DMC). The first-cycle reversible capacities and coulombic efficiencies increased with increase in the level of nitrogen for samples prepared at 700&deg;C. However, the degree of fade also inc… more
Date: May 14, 1999
Creator: Even, William R. & Guidotti, Ronald A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department

Nanostructured Metal Oxide Anodes

Description: This summarizes NREL's FY09 battery materials research activity in developing metal oxide nanostructured anodes to enable high-energy, durable and affordable li-ion batteries for HEVs and PHEVs.
Date: May 1, 2009
Creator: Dillon, A. C.; Riley, L. A.; Lee, S. H.; Kim, Y. H.; Ban, C.; Gillaspie, D. T. et al.
Item Type: Refine your search to only Presentation
Partner: UNT Libraries Government Documents Department
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Measurement and Simulation of Source-Generated Halos in the University of Maryland Electron Ring (Umer)

Description: One of the areas of fundamental beam physics that have served as the rationale for recent research on UMER is the study of the generation and evolution of beam halos. Recent experiments and simulations have identified imperfections in the source geometry, particularly in the region near the emitter edge, as a significant potential source of halo particles. The edge-generated halo particles, both in the experiments and the simulations are found to pass through the center of the beam a short dist… more
Date: June 18, 2007
Creator: Haber, I.; Haber, I.; Bernal, S.; Kishek, R. A.; O'Shea, P. G.; Papadopoulos, C. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Pulsed X-ray Characterization of Stripline Micro-Channel Plate Gated Imager

Description: We report on characterization of x-ray imaging arrays developed by National Security Technologies, LLC. These devices are based on a microchannel plate (MCP) with a conventional glass microchannel structure, but the top and bottom conductive coatings, rather than covering the entire area, are configured into several (4 to 8) parallel strips. Since the bias voltage is a pulse launched from one end, these operate as striplines; relative delays between these pulses give different active exposure t… more
Date: March 30, 2011
Creator: F. J. Goldin, D. V. Morgan, K. J. Moy
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Electronic Circuits Lectures

Description: The two-electrode vacuum tube, or diode, consists of an electron-emitting cathode surrounded by a positive anode (plate). A plot of plate current (i{sub b}) vs plate voltage (e{sub b}) is shown. At low anode voltages, the anode current is limited by the repelling effect that the negative electrons already in the space have on the electrons just being emitted (space-charge effect). When a full space charge is present, the plate current depends upon the plate voltage according to Childs law: i{su… more
Date: December 1, 1947
Creator: Mozley, Robert
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effect of Vinylene Carbonate on Graphite Anode Cycling Efficiency

Description: Vinylene Carbonate (VC) was added to the electrolyte in graphite-lithium half-cells. We report its effect on the coulombic efficiency (as capacity shift) of graphite electrodes under various formation cycling conditions. Cyclic voltammetry on glassy carbon showed that VC passivates the electrode against electrolyte reduction. The dQ/dV plots of the first lithiation of the graphite suggest that VC alters the SEI layer, and that by varying the cell formation rate, the initial ratio of ethylene ca… more
Date: May 5, 2009
Creator: Ridgway, Paul; Zheng, Honghe; Liu, Gao; Song, Xiangun; Ross, Philip & Battaglia, Vincent
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Gas Discharge Switch Evaluation for Rhic Beam Abort Kicker Application.

Description: A gas discharge switch EEV HX3002 is being evaluated at Brookhaven National Laboratory as a possible candidate of RHIC Beam Abort Kicker modulator main switch. At higher beam energy and higher beam intensity, the switch stability becomes very crucial. The hollow anode thyratron used in the existing system is not rated for long reverse current conduction. The reverse voltage arcing caused thyratron hold-off voltage de-rating has been the main limitation of the system operation. To improve the sy… more
Date: June 30, 2002
Creator: Zhang, W.; Sandberg, J.; Sheldrake, R. & Pirrie, C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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ELECTRON AVALANCHE MODEL OF DIELECTRIC-VACUUM SURFACE BREAKDOWN

Description: The model assumes that an 'initiating event' results in positive ions on the surface near the anode and reverses the direction of the normal component of electric field so that electrons in vacuum are attracted to the dielectric locally. A sequence of surface electron avalanches progresses in steps from the anode to the cathode. For 200 kV across 1 cm, the spacing of avalanches is predicted to be about 13 microns. The time for avalanches to step from the anode to the cathode is predicted to be … more
Date: February 21, 2007
Creator: Lauer, E J
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Microwave Plasma Chemical Vapor Deposition of Nano-Structured Sn/C Composite Thin-Film Anodes for Li-ion Batteries

Description: In this paper we report results of a novel synthesis method of thin-film composite Sn/C anodes for lithium batteries. Thin layers of graphitic carbon decorated with uniformly distributed Sn nanoparticles were synthesized from a solid organic precursor Sn(IV) tert-butoxide by a one step microwave plasma chemical vapor deposition (MPCVD). The thin-film Sn/C electrodes were electrochemically tested in lithium half cells and produced a reversible capacity of 440 and 297 mAhg{sup -1} at C/25 and 5C … more
Date: February 1, 2008
Creator: Stevenson, Cynthia; Marcinek, M.; Hardwick, L. J.; Richardson, T. J.; Song, X. & Kostecki, R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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LOW TEMPERATURE CATHODE SUPPORTED ELECTROLYTES

Description: This report represents a summary of the work carried out on this project which started October 1999 and ended March 2003. A list of the publications resulting from the work are contained in Appendix A. The most significant achievements are: (1) Dense nanocrystalline zirconia and ceria films were obtained at temperatures &lt; 400 C. (2) Nanocrystalline films of both ceria and zirconia were characterized. (3) We showed that under anodic conditions 0.5 to 1 micron thick nanocrystalline films of Sc… more
Date: March 31, 2003
Creator: Anderson, Harlan U.; Dogan, Fatih & Petrovsky, Vladimir
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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