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Low-cost solar array project. Task I. Silicon material. Investigation of the hydrogenation of SiCl/sub 4/

Description: Reaction kinetic measurements on the hydrochlorination of SiCl/sub 4/ and m.g. silicon metal were last reported as a function of reaction temperature, reactor pressure, H/sub 2//SiCl/sub 4/ ratio and silicon metal particle size distribution, 3 SiCl/sub 4/ + 2 H/sub 2/ + Si reversible 4 SiHCl/sub 3/. The effect of impurities in the m.g. silicon metal on the rate of this reaction has been investigated in this quarter. The m.g. silicon was replaced with high purity, electronic grade silicon metal … more
Date: October 7, 1980
Creator: Mui, J. Y. P. & Seyferth, D.
Partner: UNT Libraries Government Documents Department
open access

Geotomography applied at the Stripa Mine in Sweden

Description: LLNL made ultrahigh-frequency (450-MHz) electromagnetic borehole-to-borehole transmissions in the Stripa Mine near Guldsmedshyttan, Sweden, in April 1979. Transmission loss measurements were made between four sets of 76-mm boreholes 30 m long, located at the end of a drift. Distances between the boreholes varied from 2 to 22 m. More than 25,000 data points were taken. A geotomograph was constructed to show the variation of attenuation between boreholes. The observed spatial variation of electro… more
Date: April 7, 1980
Creator: Okada, J.T.; Laine, E.F.; Lytle, R.J. & Daily,W.D.
Partner: UNT Libraries Government Documents Department
open access

High pressure gas metering project

Description: The initial research and development of a system that uses high pressure helium gas to pressurize vessels over a wide range of pressurization rates, vessel volumes, and maximum test pressures are described. A method of controlling the mass flow rate in a test vessel was developed by using the pressure difference across a capillary tube. The mass flow rate is related to the pressurization rate through a real gas equation of state. The resulting mass flow equation is then used in a control algori… more
Date: July 7, 1980
Creator: Tripp, L.R.
Partner: UNT Libraries Government Documents Department
open access

Suppression of transverse beam breakup modes in an induction accelerator by gas focusing

Description: The effect of beam-generated positive ions on the beam-breakup instability in linear electron accelerators is calculated using simple models. The strongly nonlinear dependence of the ion focusing force on radius makes a complete suppression of the mode growth possible, in contrast to solenoidal focusing. The predicted gas pressures for significant stabilization of the mode growth in a machine configuration like ATA is relatively low (10/sup -5/ to 10/sup -4/ torr), even for high-Q modes.
Date: April 7, 1980
Creator: Briggs, R. J.
Partner: UNT Libraries Government Documents Department
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Design and development of Stirling engines for stationary power generation applications in the 500 to 3000 horsepower range. First quarterly report

Description: This project is Phase I of a multi-phased program for the design and development of Stirling engines for stationary power generation applications in the 500 to 3000 horsepower range. Phase I comprises the conceptual design and associated cost estimates of a stationary Stirling engine capable of being fueled by a variety of heat sources, with emphasis on coal firing, followed by the preparation of a plan for implementing the design, fabrication and testing of a demonstration engine by 1985. The … more
Date: January 7, 1980
Partner: UNT Libraries Government Documents Department
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Cost effectiveness of long life incandescent lamps and energy buttons

Description: Long-life replacement lamps for the incandescent lamp have been evaluated with regard to their cost effectiveness. The replacements include the use of energy buttons that extend lamp life as well as an adaptive fluorescent circline lamp that will fit into existing incandescent lamp sockets. The initial, operating, and replacement costs for one million lumen hours are determined for each lamp system. It is found that the most important component lighting cost is the operating cost. Using lamps t… more
Date: April 7, 1980
Creator: Verderber, R. & Morse, O.
Partner: UNT Libraries Government Documents Department
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Evaluation of selected chemical processes for production of low-cost silicon: Phase III. Silicon Material Task, Low-Cost Solar Array Project. Sixteenth/seventeenth quarterly progress report, July-December 31, 1979

Description: The method under development for the production of semiconductor grade silicon is based on the zinc vapor reduction of silicon tetrachloride in a fluidized bed of seed particles. Construction of the PDU was completed during the report period, the fluidized-bed reactor was coated internally with silicon/SiC, and the operation of several systems was checked out. However, problems with the zinc feed system, unrelated to its basic operability, delayed introduction of zinc vapor to the PDU. At the e… more
Date: March 7, 1980
Creator: Blocher, J.M. Jr. & Browning, M.F.
Partner: UNT Libraries Government Documents Department
open access

Bates solar industrial process-steam application: preliminary design review

Description: The design is analyzed for a parabolic trough solar process heat system for a cardboard corrugation fabrication facility in Texas. The program is briefly reviewed, including an analysis of the plant and process. The performance modeling for the system is discussed, and the solar system structural design, collector subsystem, heat transport and distribution subsystem are analyzed. The selection of the heat transfer fluid, and ullage and fluid maintenance are discussed, and the master control sys… more
Date: January 7, 1980
Partner: UNT Libraries Government Documents Department
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Geologic and geochemical studies of the New Albany Group (Devonian black shale) in Illinois to evaluate its characteristics as a source of hydrocarbons. Quarterly progress report, October 1-December 31, 1979

Description: This project is a detailed analysis of the lithology, stratigraphy, and structure of the New Albany Group in Illinois to determine those characteristics of lithology, thickness, regional distribution, vertical and lateral variability, and deformation that are most relevant to the occurrence of hydrocarbons. Research is reported for this quarter in the following areas: coordination of stratigraphic maps, mineralogic and petrographic characterization, physical properties of Devonian black shale, … more
Date: January 7, 1980
Creator: Bergstrom, R.E. & Shimp, N.F.
Partner: UNT Libraries Government Documents Department
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Development of Electrochemical Photovoltaic Cells. Third Technical Progress Report, November 1, 1979-January 31, 1980

Description: The development of stable, efficient, electrochemical photovoltaic cells based on silicon and gallium arsenide in non-aqueous electrolyte systems is being investigated. The effect of surface condition of silicon electrodes on electrochemical and physical characteristics has been studied. An electrode-supporting electrolyte interaction in acetonitrile has been identified which leads to etching of the surface. Improved performance can result, which has practical significance. Gallium arsenide ele… more
Date: March 7, 1980
Creator: Byker, H. J.; Schwerzel, R. E.; Wood, V. E.; Austin, A. E. & Brooman, E. W.
Partner: UNT Libraries Government Documents Department
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Advanced Gas-Cooled Nuclear Reactor Materials Evaluation and Development Program. Progress report, July 1, 1979-September 30, 1979

Description: The results of work performed from July 1, 1979 through September 30, 1979 on the Advanced Gas-Cooled Nuclear Reactor Materials Evaluation and Development Program are presented. The objectives of this program are to evaluate candidate alloys for Very High Temperature Reactor (VHTR) Nuclear Process Heat (NPH) and Direct Cycle Helium Turbine (DCHT) applications, in terms of the effect of simulated reactor primary coolant (helium containing small amounts of various other gases), high temperatures,… more
Date: March 7, 1980
Partner: UNT Libraries Government Documents Department
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Pre-sealing risk analysis

Description: This report describes studies of accidents involving high-level radioactive waste before sealing the waste into a repository. The report summarizes work done in this area during Fiscal Year 1978 and supplements previous work. Models of accident probability, severity, and consequences are refined and extended.
Date: January 7, 1980
Creator: Ensminger, D.A.; Hough, M.E. & Oston, S.G.
Partner: UNT Libraries Government Documents Department
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Nozzle model of flowing plasma with field reversal

Description: The flowing plasma outflow from a field-reversed plasma gun is modeled by a one-dimensional calculation which is based on the well-known problem of fluid flow through a nozzle. The results suggest that a low plasma mass flow rate is necessary for reconnection to be important. Comparison with 2D MHD calculations and with preliminary data from the BETA-II experiment are consistent with the model at this time.
Date: January 7, 1980
Creator: Shearer, J.W.
Partner: UNT Libraries Government Documents Department
open access

Meteorological data for SRI study of mesoscale weather effects by pilot plant

Description: The data required to estimate the probability of occurrence of initial meteorological conditions leading to an effect on the weather by the pilot solar thermal electric plant are discussed. No completely appropriate data summaries are available. Vertical atmospheric profiles are the most appropriate source of raw data for a statistical analysis, but these are not available from the pilot plant location either. The available stability data for the pilot plant site are presented. A procedure is o… more
Date: May 7, 1980
Partner: UNT Libraries Government Documents Department
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Study of gamma-ray strength functions

Description: The use of gamma-ray strength function systematics to calculate neutron capture cross sections and capture gamma-ray spectra is discussed. The ratio of the average capture width, GAMMA/sub ..gamma../-bar, to the average level spacing, D/sub obs/, both at the neutron separation energy, can be derived from such systematics with much less uncertainty than from separate systematics for values of GAMMA/sub ..gamma../-bar and D/sub obs/. In particular, the E1 gamma-ray strength function is defined in… more
Date: August 7, 1980
Creator: Gardner, D. G.; Gardner, M. A. & Dietrich, F. S.
Partner: UNT Libraries Government Documents Department
open access

Interim report on revising the resource allocation and mine costing model. [By states for 8 sulfur content ranges]

Description: The purpose of this contract is to provide the Coal and Electric Power Analysis Division, EIA, with a revised and fully documented Resource Allocation and Mine Costing (RAMC) model to be used in developing coal supply curves for use in the Mid-range Energy Forecasting System and the National Coal Model. The project is structured in three phases, as follows: establish conceptual underpinnings of revised supply curve methodology; revise mine costing methodology; and revise resource allocation met… more
Date: March 7, 1980
Partner: UNT Libraries Government Documents Department
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Semiannual report for the period October 1, 1979-March 31, 1980 of work on: (1) superconducting power transmission system development; (2) cable insulation development. Power Transmission Project Technical Note No. 106

Description: Progress is reported in a program whose objective is to develop an underground superconducting power transmission system which is economical and technically attractive to the utility industry. The system would be capable of carrying very large blocks of electric power, and would supplant overhead lines in urban and suburban areas and regions of natural beauty. The program consisted initially of work in the laboratory to develop suitable materials, cryostats, and cable concepts. The materials wo… more
Date: July 7, 1980
Partner: UNT Libraries Government Documents Department
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Characterization of the solid product(s) formed when UF/sub 6/ is released into ambient air in a contained volume (U)

Description: Preliminary characterization of the plume or cloud produced by the release of UF/sub 6/ into humid air and the particulates comprising this cloud has been accomplished. The explosive release was conducted in a vessel in which the air at atmospheric pressure was static and the particulate material was collected on microscope grids by gravitational settling. Transmission and Scanning Electron Microscopy (TEM and SEM) have been used to determine the size or range of sizes of the particles produced… more
Date: May 7, 1980
Creator: Pickrell, P. W.
Partner: UNT Libraries Government Documents Department
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Geothermal Energy Development in the Eastern United States. A Program for Capital Recovery Assessment for the HP-97 and Other Desk Calculators

Description: The Johns Hopkins University Applied Physics Laboratory and the Center for Metropolitan Planning and Research support the Division of Geothermal Energy, U.S. Department of Energy, in the development of geothermal energy in the Eastern United States. In this role, many tools have been developed to assist in the analysis of the economics of the application of geothermal energy. This report documents one computer program that has proved useful.
Date: August 7, 1980
Creator: Yu, Kwang & Briesen, Roy Von
Partner: UNT Libraries Government Documents Department
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How Medicare Pays Doctors

Description: This report details the criteria that are employed in making reasonable charge determinations.
Date: April 7, 1980
Creator: O'Sullivan, Jennifer
Partner: UNT Libraries Government Documents Department
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Physico-chemical investigation of some areas of fundamental significance to biophysics. Annual report, 1979-1980

Description: All projects listed in this report have been submitted for publication as journal articles or DOE reports. Projects include: McGlynn, S.P., Felps, W.S. and Scott, J.D., Molecular Rydberg Transitions. XVIII. Vibronic Doubling in Methyl Iodide; Findley, G.L. and McGlynn, S.P., The Generalized Genetic Code. A Modification of Code Universality; Findley, G.L. and McGlynn, S.P., Fundamental Spectroscopic Studies of Some Atmospheric Pollutants; McGlynn, S.P., Azumi, T. and Kumar, D., The Colors of Pos… more
Date: July 7, 1980
Creator: McGlynn, S P
Partner: UNT Libraries Government Documents Department
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Geothermal materials survey: Baca Geothermal Demonstration Power Plant, Baca, New Mexico

Description: The results of a materials survey for the Baca 50 MW(e) single flash geothermal plant in the Valles Caldera of New Mexico are presented. From the design documents provided, materials proposed for use in contact with the plant atmosphere, the two-phase geofluid, the separated steam, and the recirculating condensate cooling water were assessed for suitability. Special emphasis was given to records of performance of the materials in other geothermal plants. Based upon these considerations of chemi… more
Date: October 7, 1980
Creator: Ellis, P. F., II
Partner: UNT Libraries Government Documents Department
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