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Extracted current densities from surface conversion sources of negative ions

Description: The condition for extracting a maximum negative ion current density is found when the product of the radius of the negative ion conversion electrode, the cross-section for negative and positive ion recombination, and the density of positive ions in the ion source equals one. The optimum output is obtained at the highest positive ion density and the smallest electrode radius.
Date: February 10, 1982
Creator: Fink, J.H.
Partner: UNT Libraries Government Documents Department
open access

Tar sand extraction by steam stimulation and steam drive: measurement of physical properties

Description: The measurement of the following thermophysical properties of Utah tar sands is in progress: thermal conductivity, specific heat relative permeability, and viscosity (of the recovered bitumen). During the report period (October 1, 1978 to November 1, 1979), experimental procedures have been developed and a basic data set has been measured. Additionally, standard core analysis has been performed for four drill sites in the Asphalt Ridge, Utah area.
Date: September 10, 1980
Creator: Linberg, W.R.
Partner: UNT Libraries Government Documents Department
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Upgrade of the Proton West secondary beamline

Description: As originally designed and operated, protons entering PW6 were steered by a series of EPB dipoles into a single interaction length beryllium target, some 43 feet from the enclosure wall. Ensuing secondary beams, either p{sup +}/{pi}{sup +} or p{sup -}/{pi}{sup -}, were collected by a string of quadrupoles following the target, steered westward, away from the Proton Center line, through PW6 and PW7, and ultimately focussed on experiment production targets located within the large PW8 hall. Aroun… more
Date: October 10, 1989
Creator: Spiegel, L.
Partner: UNT Libraries Government Documents Department
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Heavy recycle solvent studies in two-stage coal liquefaction. Final technical report, September 1, 1982-December 30, 1983

Description: The objective of this program has been to study the chemistry of the components with high boiling points in a direct coal liquefaction recycle solvent and to identify those components which lead to higher overall yields and improved product stability in the initial coal dissolution step of direct coal liquefaction processes. The major conclusions are: -454 C recycle solvent is primarily aromatic hydrocarbons (73%) and contains almost no asphaltenes; +454 C recycle solvent is primarily asphalten… more
Date: January 10, 1984
Creator: Longanbach, J. R.
Partner: UNT Libraries Government Documents Department
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Experimental observations and model calculations of impurity radiation in a plasma gun compact torus experiment

Description: Several types of radiation measurements were performed on the Beta II compact forms experiment. Among these are time integrated spectra ranging in wavelength from the vuv to the uv, time resolved bolometer measurements of radiation from the x-ray to the infrared, and time and wavelength resolved measurements of certain spectral lines. It is difficult to relate any one of these measurements to plasma parameters of interest such as temperature, density, or impurity content. In this report we comp… more
Date: August 10, 1982
Creator: Goldenbaum, G. C.; Granneman, E. H. A.; Hartman, C. W.; Prono, D. S.; Taska, J. & Turner, W. C.
Partner: UNT Libraries Government Documents Department
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Radiation in the SLC final focus alcoves from beam losses in collimators and dumps

Description: Radiation levels inside the final focus alcoves are calculated from the main dump, tune-up dumps, and adjustable collimators. Neutron calculations are done for giant resonance neutrons. Fluences of neutrons and photons in the alcoves are determined. It is concluded that, if the beam losses do indeed occur as believed, many of the electronic components in the alcoves will begin to fail after a very short running period. (LEW)
Date: September 10, 1986
Creator: Jenkins, T.M. & McCall, R.C.
Partner: UNT Libraries Government Documents Department
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Benefit-cost analysis of DOE's Current Federal Program to increase hydrothermal resource utilization. Final report

Description: The impact of DOE's Current Federal Program on the commercialization of hydrothermal resources between 1980 and 2000 is analyzed. The hydrothermal resources of the United States and the types of DOE activities used to stimulate the development of these resources for both electric power and direct heat use are described briefly. The No Federal Program and the Current Federal Program are then described in terms of funding levels and the resultant market penetration estimates through 2000. These m… more
Date: December 10, 1981
Partner: UNT Libraries Government Documents Department
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Preliminary analysis of a target factory for laser fusion

Description: An analysis of a target factory leading to the determination of production expressions has provided for the basis of a parametric study. Parameters involving the input and output rate of a process system, processing yield factors, and multiple processing steps and production lines have been used to develop an understanding of their dependence on the rate of target injection for laser fusion. Preliminary results have indicated that a parametric study of this type will be important in the selecti… more
Date: June 10, 1980
Creator: Sherohman, J.W. & Hendricks, C.D.
Partner: UNT Libraries Government Documents Department
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Synthesis and characterization of a new silicone multiblock polymer

Description: The Lawrence Livermore National Laboratory (LLNL) has an active interest in the synthesis of new polysiloxanes as base polymers for cellular silicone materials. These elastomers have properties uniquely suited to very specific engineering requirements. While the polymers which we have prepared via random equilibrium of various cyclic tetrasiloxanes have adequate properties for certain applications, there is evidence to suggest that alternating block polysiloxanes prepared via condensation-polym… more
Date: May 10, 1982
Creator: Riley, M.O.; Kolb, J.R. & Jessop, E.S.
Partner: UNT Libraries Government Documents Department
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Radiation damage measurements on rock salt and other minerals for waste disposal applications. Quarterly report, January 1, 1980-March 31, 1980

Description: Different aspects of radiation damage in both synthetic NaCl crystals and various natural rock salt samples as well as granite, basalt and other minerals which will be important for radioactive waste disposal applications are being investigated. The principal means of measuring radiation damage is the determination of F-center concentrations, and the concentration and size of sodium metal colloid particles. Formation of these and other defects during irradiation and the annealing of defects and… more
Date: April 10, 1980
Creator: Swyler, K. J.; Loman, J. M.; Teutonico, L. J.; Elgort, G. E. & Levy, P. W.
Partner: UNT Libraries Government Documents Department
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Uniform laser ablative acceleration of targets at 10/sup 14/ W/cm/sup 2/

Description: We present the first detailed investigations of the ablative acceleration of planar targets while simultaneously using high irradiance (10/sup 14/ W/cm/sup 2/), large focal diameters (1 mm) and long laser pulse duration (3 nsec). Included are measurements of target preheat, ablation pressures and uniformity achieved under these conditions. Targets were accelerated to high velocities with velocity profile uniformity approaching that required for high gain pellet implosions.
Date: August 10, 1982
Creator: Obenschain, S. P.; Whitlock, R. R.; McLean, E. A.; Ripin, B. H.; Price, R. H.; Phillion, D. W. et al.
Partner: UNT Libraries Government Documents Department
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Pressure limits of negative ion sources based upon gas efficiency and extracted ion-current density

Description: The nature of the electrical discharge has an obvious impact upon the gas efficiency of an ion source and on the current density whch can be drawn from it. However external factors, such as the conductance of the grids and the background pressure along the beamline, also have an effect. Simple approximations based upon these factors show that there is a lower limit to the pressure of an ion source, which can deliver an ion beam of given current density at a specific gas efficiency. Estimates of… more
Date: March 10, 1982
Creator: Fink, J.
Partner: UNT Libraries Government Documents Department
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SLAC Divertor Channel Entrance Thermal Stress Analysis

Description: X-ray beams emerging from the new SLAC electron-positron storage ring (PEP) impinge on the entrance to tangential divertor channels causing highly localized heating in the channel structure. Analyses were completed to determine the temperatures and thermally-induced stresses due to this heating. These parts are cooled with water flowing axially over them at 30/sup 0/C. The current design and operating conditions should result in the entrance to the new divertor channel operating at a peak tempe… more
Date: July 10, 1985
Creator: Johnson, Gary L.; Stein, Werner; Lu, Stephen C. & Riddle, Robert A.
Partner: UNT Libraries Government Documents Department
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Importance of high order momentum terms in SLC optics

Description: The evaluation of background levels at the SLC relies, in several cases, on the proper representation of how low momentum electrons propagate through the Arcs and the Final Focus System (FFS). For example, beam - gas bremsstrahlung in the arcs causes electrons of up to 6% energy loss to be transported through to the IP; secondary showers on edges of masks and collimators yield debris with a very wide momentum spectrum. This note is a naive attempt at checking the validity of TRANSPORT and TURTL… more
Date: July 10, 1985
Creator: Kozanecki, W.
Partner: UNT Libraries Government Documents Department
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Collins' bypass for the main ring

Description: Design of the bypass for the main ring at Fermilab is discussed. Specific design features discussed include space, path length, geometric closure, matching of betatron functions, and external dispersion. Bypass parameters are given. (GHT)
Date: August 10, 1982
Creator: Ohnuma, S.
Partner: UNT Libraries Government Documents Department
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Feasibility study: PASS computer environment

Description: The Policy Analysis Screening System (PASS) is a computerized information-retrieval system designed to provide analysts in the Department of Energy, Assistant Secretary for Environment, Office of Technology Impacts (DOE-ASEV-OTI) with automated access to articles, computer simulation outputs, energy-environmental statistics, and graphics. Although it is essential that PASS respond quickly to user queries, problems at the computer facility where it was originally installed seriously slowed PASS'… more
Date: March 10, 1980
Partner: UNT Libraries Government Documents Department
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Financial Condition of American Agriculture

Description: A chapter report issued by the General Accounting Office with an abstract that begins "GAO reviewed the financial condition of American agriculture to assess: (1) the trends in the economic environment surrounding the farm sector; (2) farmers' financial condition; and (3) the performance of financial institutions serving agriculture."
Date: October 10, 1985
Creator: United States. General Accounting Office.
Partner: UNT Libraries Government Documents Department
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Measurement control for plutonium isotopic measurements using gamma-ray spectrometry

Description: A measurement control (MC) program should be an integral part of every nondestructive assay measurement system used for the assay of special nuclear materials. This report describes an MC program for plutonium isotopic composition measurements using high-resolution gamma-ray spectroscopy. This MC program emphasizes the standardization of data collection procedures along with the implementation of internal and external measurement control checks to provide the requisite measurement quality assur… more
Date: May 10, 1985
Creator: Fleissner, J.G.
Partner: UNT Libraries Government Documents Department
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Infrared and Raman investigation of rare-earth phosphate glasses for potential use as radioactive waste forms

Description: This project was designed to investigate the properties of the rare-earth phosphate glasses CeO{sub 2}-P{sub 2}O{sub 5} and Pr{sub 2}O{sub 3}-P{sub 2}O{sub 5} for potential use as radioactive waste glasses. The research involved determination of the glass-forming region, loading capacity, and optimum processing parameters of the glasses. Structural studies of the unloaded host glasses and glasses loaded with simulated waste elements were to be done using Raman, infrared and infrared reflection … more
Date: November 10, 1986
Creator: Morgan, S.
Partner: UNT Libraries Government Documents Department
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Crystelle Waggoner Charitable Trust

Description: A financial data report for the Crystelle Waggoner Charitable Trust. The financial report details their assets by the year starting from 1984 to 1988 and the support grant they have awarded for that following year. In addition information, no deadline, has been circled.
Date: July 10, 1989
Partner: UNT Libraries Special Collections
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Katrine Menzing Deakins Charitable Trust

Description: A financial data report for Katrine Menzing Deakins Charitable Trust. The financial report goes into details about the foundations assets for the years 1984 to 1988 and the supporting grants that were award for that year. In additional information, deadline: June 30, has been circled.
Date: July 10, 1989
Partner: UNT Libraries Special Collections
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Investigation of Sulfur-Tolerant Catalysts for Selective Synthesis of Hydrocarbon Liquids From Coal-Derived Gases. Quarterly Technical Progress Report, December 19, 1979-March 18, 1980

Description: A 15% Fe/SiO/sub 2/ catalyst was prepared. H/sub 2/ and CO chemisorption uptakes were measured for the catalysts prepared to date. Very small uptakes were noted for the silica supported iron catalysts. Reactor activity tests in synthesis gas were conducted for 3% Fe/SiO/sub 2/, 15% Fe/SiO/sub 2/ and 10% Co-B/Al/sub 2/O/sub 3/ catalysts. These preliminary tests aided the final development of a laboratory microreactor system. Criteria for avoiding heat and mass transfer limitations on intrinsic r… more
Date: April 10, 1980
Creator: Bartholomew, C. H.
Partner: UNT Libraries Government Documents Department
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Application of microfabrication technology to thermionic energy conversion. Progress report 2

Description: Two diode designs are being studied that require basically different fabrication techniques. The fabrication of electrodes was begun to test the concepts and the feasibility of these designs. This work was done with polished molybdenum electrode surfaces and vapor-deposited alumina insulator structures. Initial results were obtained in the close spacing of molybdenum electrodes with alumina insulators. Spacings were demonstrated with 1/2-inch diameter discs in the range of 3 to 5 ..mu..m, using… more
Date: March 10, 1980
Creator: Brodie, Ivor & Gates, Diane C.
Partner: UNT Libraries Government Documents Department
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Beam-beam deflections to measure size spot and offset at SLC IP

Description: As soon as two SLC beams make it to the intersection region, both transverse offsets, spot sizes and shapes can be extracted from the pattern of angular deflections produced by the electromagnetic interaction of the two beams, as one is scanned across the other. These deflections, measured in two high resolution Beam Position Monitors (BPM) mounted symmetrically on both sides of the intersection point, will produce detectable signals allowing spot sizes to be tuned, even with the very low lumin… more
Date: June 10, 1985
Creator: Bambade, P.
Partner: UNT Libraries Government Documents Department
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