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Low-Cost Solar Array Project. Task I. Silicon material: investigation of the hydrogenation of SiCl/sub 4/. Fifth quarterly report

Description: Reaction kinetic measurements on the hydrochlorination of SiCl/sub 4/ and mg silicon metal in the presence of a copper catalyst were last reported as a function of reaction temperature, reactor pressure and H/sub 2//SiCl/sub 4/ ratio, 3 SiCl/sub 4/ + 2 H/sub 2/ + Si ..-->.. 4 SiHCl/sub 3/. The same reaction was repeated at a lower catalyst loading of 2 wt%. In the presence of 2 wt% cuprous chloride (based on silicon metal), the hydrochlorination reaction rate is doubled to give about the sam… more
Date: July 3, 1980
Creator: Mui, J. Y. P.
Partner: UNT Libraries Government Documents Department
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Comparison between calculation and measurement of energy deposited by 800 MeV protons

Description: The High Energy Transport Code, HETC, was obtained from the Radiation Shielding Information Center (RSIC) at Oak Ridge National Laboratory and altered as necessary to run on a CDC 7600 using the LTSS software in use at LLNL. HETC was then used to obtain calculated estimates of energy deposited, for comparison with a series of benchmark experiments done by LLNL. These experiments used proton beams of various energies incident on well-defined composite targets in good geometry. In this report, tw… more
Date: April 3, 1980
Creator: Loewe, W.E.
Partner: UNT Libraries Government Documents Department
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Defluoridation study for Boise geothermal water

Description: Methods of removing fluorides from water are reviewed and recommendations are made for treating geothermal water used by the Boise Geothermal Project, Boise, Idaho. The Boise geothermal water except for its high fluoride content would be high quality, suitable for primary drinking water. Fluoride ranges from about 15 to 25 mg/l in water from various wells in the Boise region where the Project plans to obtain hot water. Four techniques for removing fluorides from water have been studied extensiv… more
Date: June 3, 1980
Creator: Rigdon, L.
Partner: UNT Libraries Government Documents Department
open access

Beam loss by collimation in a neutralizer duct

Description: Beam fractions lost by collimation in a neutralizer duct are computed in x-x' phase space by using three examples of slab beam distributions under a broad range of duct dimensions, beam half-widths, and beam divergences. The results can be used to design compact neutralizers and to specify beam requirements. The computer code ILOST can be used under a broad range of beam conditions to compute the fraction lost by collimation.
Date: April 3, 1980
Creator: Hamilton, G.W. & Willmann, P.A.
Partner: UNT Libraries Government Documents Department
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Practical aspects of rf acceleration for MFE injection

Description: Several practical aspects of rf acceleration (by a MEQALAC accelerator, for example) of positive and negative ions for MFE neutral injection were considered. The beam transport, gas flow, differential pumping, and compatibility with MFE beam lines were examined. It was found that rf acceleration has several advantages over dc acceleration, especially if high energy (over 100 keV) and/or high purity (over 99%) is required. Therefore rf acceleration should be considered especially in connection w… more
Date: June 3, 1980
Creator: Hamilton, G.W. & Fink, J.H.
Partner: UNT Libraries Government Documents Department
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Rutherford scattering of neutral atoms: a technique for measuring plasma ion temperatures. An analysis of the applicability to the central cell plasma of TMX

Description: Rutherford scattering of neutral particles by plasma ions is examined as a method for determining plasma ion in the central cell fo the Tandem Mirror Experiment (TMX). When a scattering configuration, consisting of a 20-keV-, 10-A-deuterium neutral beam and an energy analyzer with a 1% resolution, is arranged such that only neutral particles scattered by plasma ions over an angle of 10/sup 0/ are accepted, central-cell ion temperatures in the 30- to 1000-eV range can be measured. The count rate… more
Date: June 3, 1980
Creator: Granneman, E.H.A.
Partner: UNT Libraries Government Documents Department
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Physical-chemical NO/sub x/ mechanisms in fluidized bed combustion

Description: Fluidized bed combustors operate in the large-particle (> 1 mm) high-velocity (> 1 m/s) fluidization regime which differs from most previous applications. These characteristics foster a distinctive volatiles evolution structure in the vicinity of the coal injectors of bottom-fed atmospheric fluidized beds (AFBC). The evolution of coal volatiles associated with bottom-fed AFBC was defined as the focal point. The major effort of the work was concerned with a group combustion model of dense … more
Date: November 3, 1980
Creator: Bywater, R. J.
Partner: UNT Libraries Government Documents Department
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Fabrication and testing of mis solar cells on a-Si:F:H. Final report, September 15, 1979-September 15, 1980

Description: Fabrication techniques and improved a-Si:H film processing have been achieved to produce a short circuit current density of 7.5 mA/cm/sup 2/ and open circuit voltage of 740 mV on large area (2cm/sup 2/) a-Si cells by the deposition of an inexpensive semitransparent metal (Cr) as a top electrode on a N-I-P structure. This corresponds to a 2% efficiency using AMl illumination. A V/sub oc/ of 830 mV and fill factor of 0.54 have also been separately obtained. A relatively simple and inexpensive dep… more
Date: November 3, 1980
Creator: Han, M. K. & Anderson, W. A.
Partner: UNT Libraries Government Documents Department
open access

Development of Alcohol-Based Synthetic Transportation Fuels From Coal-Derived Synthesis Gases. Third Quarterly Progress Report, April 1-June 30, 1980

Description: Fourteen catalysts were prepared by either evaporation of metal nitrate-citric acid solutions or by impregnation of inert supports with metal nitrate-citric acid solutions. Fourteen catalysts were tested in either the Berty gradientless reactor or the plug-flow reactor. These catalysts have been characterized intto the following five groups: Group I - catalysts containing Cu, Zn, Co, Cr and alkali; Group II - catalysts of Group I without Zn or Co or Cr; Group III - modified methanol synthesis c… more
Date: December 3, 1980
Partner: UNT Libraries Government Documents Department
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Cumulative-strain-damage model of ductile fracture: simulation and prediction of engineering fracture tests

Description: A cumulative-strain-damage criterion is used to predict the initiation and propagation of fracture in ductile materials. The model is consistent with a model of ductile rupture that involves void growth and coalescence. Two- and three-dimensional finite difference computer codes, which use incremental-plasticity theory to describe large strains with rotation, are used to trace the history of damage in a material due to external forces. Fracture begins when the damage exceeds a critical value ov… more
Date: October 3, 1980
Creator: Wilkins, M. L.; Streit, R. D. & Reaugh, J. E.
Partner: UNT Libraries Government Documents Department
open access

Mirror fusion test facility magnet system. Final design report

Description: Information is given on each of the following topics: (1) magnet description, (2) superconducting manufacture, (3) mechanical behavior of conductor winding, (4) coil winding, (5) thermal analysis, (6) cryogenic system, (7) power supply system, (8) structural analysis, (9) structural finite element analysis refinement, (10) structural case fault analysis, and (11) structural metallurgy. (MOW)
Date: September 3, 1980
Creator: Henning, C. D.; Hodges, A. J.; VanSant, J. H.; Dalder, E. N.; Hinkle, R. E.; Horvath, J. A. et al.
Partner: UNT Libraries Government Documents Department
open access

Comparative analysis of coal use options for reducing the dependence of utilities on imported oil

Description: The President and the Congress are finalizing National Goals to reduce the Nation's dependence on imported oil. A key element of these goals is the conversion of utilities from oil-fired to coal-fired to yield an import reduction of 0.75 MBD by 1990. Since these utilities already exist at fixed locations, this element of the National Goals has the focus of Appolo, Polaris, Minuteman and other major successful programs. It is indicated, therefore, that the program development and management tech… more
Date: January 3, 1980
Creator: Eggers, Jr, A J
Partner: UNT Libraries Government Documents Department
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Introduction to Praxis

Description: Praxis is the practice of the programming art, science, and skill. It is a high-order language designed for the efficient programming of control and systems applications. It is a comprehensive, strongly typed, block-structured language in the tradition of Pascal, with much of the power of the Mesa and Ada languages. It supports the development of systems composed of separately compiled modules, user-defined data types, exception handling, detailed control mechanisms, and encapsulated data and r… more
Date: December 3, 1980
Creator: Greenwood, J.R.; Evans, A. Jr.; Morgan, C.R. & Zarnstorff, M.C.
Partner: UNT Libraries Government Documents Department
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Testing geopressured geothermal reservoirs in existing wells: Detailed completions prognosis for geopressured-geothermal well of opportunity, prospect #1

Description: This prospective well of opportunity was originally drilled and completed as a gas producer by Wrightsman Investment Company in early 1973. The original and present producing interval was from 15,216 to 15,238 feet. IMC Exploration Company, Inc. acquired the property from Wrightsman and is the present owner operator. The well is presently shut in s a non-economic producer and IMC proposed to perform plug and abandonment operations in April, 1980. This well has a good geopressured-geothermal wat… more
Date: April 3, 1980
Creator: Kennedy, Clovis A.
Partner: UNT Libraries Government Documents Department
open access

Development of Alcohol-Based Synthetic Transportation Fuels From Coal-Derived Synthesis Gases. Fourth Quarterly Progress Report, July 1-September 30, 1980

Description: Twenty-four catalysts were prepared by either evaporation of metal nitrate-citric acid solutions, by impregnation of methanol synthesis catalysts or by coprecipitation with KOH. Seventeen catalysts were tested in either the Berty gradientless reactor or the plug-flow reactor. These catalysts have been characterized into the five groups. A CuCoZn/sub 0/ /sub 125/Fe/sub 0/ /sub 1/Th/sub 0/ /sub 5/K/sub 0/ /sub 11/ catalyst produced by evaporation of metal nitrate-citric acid solutions resulted in… more
Date: December 3, 1980
Partner: UNT Libraries Government Documents Department
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Surface-wave generation by underground nuclear explosions releasing tectonic strain

Description: Seismic surface-wave generation by underground nuclear explosions releasing tectonic strain is studied through a series of synthetic radiation-pattern calculations based on the earthquake-trigger model. From amplitude and phase radiation patterns for 20-s Rayleigh waves, inferences are made about effects on surface-wave magnitude, M/sub s/, and waveform character. The focus of this study is a comparison between two mechanisms of tectonic strain release: strike-slip motion on vertical faults and… more
Date: November 3, 1980
Creator: Patton, H. J.
Partner: UNT Libraries Government Documents Department
open access

Efficient ultrasonic grinding: a new technology for micron-sized coal. Quarterly technical progress report No. 2, December 16, 1979-March 15, 1980

Description: Work focused on establishing experimentally determined parameters for ultrasonic comminution and their translation into the design of an ultrasonic comminution array for Phase I testing. Early work indicated that continuous removal of fines during communition could significantly increase the production of -10 micron particles. Similarly, varying the mechanical gain of the ultrasonic comminution apparatus and thereby increasing the strain amplitude of the system was shown to enhance fines produc… more
Date: April 3, 1980
Creator: Tarpley, W. B., Jr.; Howard, P. L. & Moulder, G. R.
Partner: UNT Libraries Government Documents Department
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