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Investigation of mechanically hard, chemically inert antireflection coatings for photovoltaic solar modules. Final technical report, April 1, 1980-March 31, 1981

Description: The overall objective of this program is to determine the optical properties of i-Carbon (diamond-like) films and determine if these films can be developed into antireflecting (AR) coatings for silicon solar cells. The i-C films have been produced on glass, silicon, and KCl by radio frequency (RF) plasma decomposition of the alkane gases. Films were also produced on silicon solar cells by low-energy ion beam techniques. These coatings did not perform as well as those made from hydrocarbon gases… more
Date: March 31, 1981
Creator: Moravec, T.J.
Partner: UNT Libraries Government Documents Department
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Study of selected off-gases produced during the immobilization of nuclear wastes in the SYNROC process. Final report for year ended December 31, 1981. [Pollucite, CsAlSi/sub 2/O/sub 6/, and barium-cesium hollandite, (Ba,Cs)Al/sub 2/Ti/sub 6/O/sub 16/]

Description: Calculation of possible off-gases expected during the fabrication of SYNROC showed that volatilization of cesium would be a significant problem. Samples of the cesium containing minerals pollucite, CsAlSi/sub 2/O/sub 6/, and barium-cesium hollandite, (Ba,Cs)Al/sub 2/Ti/sub 6/O/sub 16/, were prepared for vaporization studies. Fifteen vaporization runs were made with the hollandite samples. With dry air as the carrier gas, the vapor pressure of cesium over Ba/sub 0/ /sub 8/Cs/sub 0/ /sub 4/Al/sub… more
Date: December 31, 1981
Creator: Carpenter, J.H.
Partner: UNT Libraries Government Documents Department
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Thermal stability of ferritic alloys for fossil-fuel processing systems. Final technical report, September 1, 1978-August 31, 1981. [at 475/sup 0/C]

Description: This research program has investigated the thermal stability of several ferritic stainless steels containing 15 to 18 weight percent chromium over the temperature range 400/sup 0/C to 550/sup 0/C where the 475/sup 0/C embrittlement reaction is of concern. A major part of the experimental work was concerned with the effect of ternary additions of up to 6 weight percent; aluminum on the kinetics and the magnitude of the embrittlement reaction. The work also included a binary Fe-18Cr alloy, a tern… more
Date: December 31, 1981
Creator: Polonis, D.H. & Spear, W.S.
Partner: UNT Libraries Government Documents Department
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Brayton-cycle heat-recovery-system characterization program. Gas-conditioning final evaluation report

Description: Flue gas conditioning approaches for the Brayton-cycle heat recovery system are discussed. This revision incorporates the results of recent AiResearch tests on the subatmospheric system (SAS) turbocompressor, as well as the Electric Power Research Institute sponsored tests on ceramic fiber filters. The two primary purposes of the gas conditioning evaluation are: to determine the need for protecting the Brayton-cycle turbocompressor and heat exchanger from the potential damaging effects of erosi… more
Date: July 31, 1981
Partner: UNT Libraries Government Documents Department
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Hydrogeochemical and stream sediment reconnaissance basic data for Carlsbad quadrangle, New Mexico

Description: Field and laboratory data are presented for 467 water samples and 1680 sediment samples from the Carlsbad Quadrangle, New Mexico. The samples were collected and uranium analysis performed by Los Alamos National Laboratory; multielement analysis and data reporting were performed by the Uranium Resource Evaluation Project at Oak Ridge, Tennessee.
Date: August 31, 1981
Partner: UNT Libraries Government Documents Department
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Brayton-cycle heat recovery-system characterization program. Subatmospheric-system test report

Description: The turbine tests and results for the Brayton cycle subatmospheric system (SAS) are summarized. A scaled model turbine was operated in the same environment as that which a full-scale SAS machine would experience from the hot effluent flue gas from a glass container furnace. The objective of the testing was to evaluate the effects of a simulated furnace flue gas stream on the turbine nozzles and blades. The following specific areas were evaluated: erosion of the turbine nozzles and blades from t… more
Date: July 31, 1981
Creator: Burgmeier, L. & Leung, S.
Partner: UNT Libraries Government Documents Department
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Geothermally heated Chamber of Commerce offices at Marlin, Texas. Final report

Description: The use of an existing, low temperature, geothermal resource to heat the Chamber of Commerce offices in Marlin, Texas is described. A secondary purpose of the project is to attract new industries and businesses to Marlin via this alternate energy show-piece demonstration of a simple and practical application of Texas' low temperature geothermal resource.
Date: July 31, 1981
Partner: UNT Libraries Government Documents Department
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Investigation of Sulfur-Tolerant Catalysts for Selective Synthesis of Hydrocarbon Liquids From Coal-Derived Gases. Annual Technical Progress Report, September 19, 1980-September 18, 1981

Description: During the past contract year, considerable progress was made in characterization and activity/selectivity testing of iron and cobalt catalysts. Preparation of boride promoted cobalt and iron catalysts was refined and nearly completed. H/sub 2/ and CO adsorption and oxygen titration measurements were performed on a number of supported and unsupported catalysts, especially several boride promoted cobalt and iron catalysts. Activity/selectivity tests of 3 and 15% Fe/SiO/sub 2/ and Co/SiO/sub 2/ a… more
Date: October 31, 1981
Creator: Bartholomew, C. H.
Partner: UNT Libraries Government Documents Department
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Ionization in liquids. Progress report, May 1, 1981-April 30, 1982

Description: Significant progress has been made in better understanding the electron transport and reaction properties of model liquids and biological systems. The new results complement earlier studies of electrons and are important to all aspects of the interaction of radiation with matter and to the myriad of electronic processes that occur in a variety of systems. These processes range from dielectric breakdown to carcinogenesis as is illustrated in the following list of electron transport and reaction … more
Date: December 31, 1981
Creator: Bakale, G.
Partner: UNT Libraries Government Documents Department
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Annual progress report

Description: A single-mode, nonlinear analysis of the 2XIIB experimental results is under development. A Model-I (infinite geometry, no mirror losses or source beams) analysis is nearly complete. Model II (mirror losses, beams, energy drag) is in progress. Nonlinear analysis of the 2..omega../sub p/ instability near the quarter-critical point in an inhomogeneous plasma is continuing.
Date: July 31, 1981
Creator: Simon, A.
Partner: UNT Libraries Government Documents Department
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Preparation and evaluation of advanced electro-catalysts for phosphoric acid fuel cells. Eighth quarterly report, October-December 1981. [Platinum]

Description: In the development of new and highly efficient porous electrocatalysts, two cooperative phenomena are required. The first is an increase in the electrocatalytic activity of the catalyst particle, and the second is the availability of that electrocatalyst particle for the electrochemical reaction. These two processes interact with each other in such a way that improvements in the electrochemical activity must be coupled with improvements in the availability of the electrocatalyst for reaction. S… more
Date: December 31, 1981
Creator: Stonehart, P.; Baris, J.; Hochmuth, J. & Pagliaro, P.
Partner: UNT Libraries Government Documents Department
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Hydrogeochemical and stream sediment reconnaissance basic data for Las Cruces quadrangle, New Mexico

Description: Field and laboratory data are presented for 501 water samples and 1817 sediment samples from the Las Cruces Quadrangle, New Mexico. The samples were collected and uranium analysis performed by Los Alamos National Laboratory; multielement analysis and data reporting were performed by the Uranium Resource Evaluation Project at Oak Ridge, Tennessee.
Date: August 31, 1981
Partner: UNT Libraries Government Documents Department
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New approaches for the reduction of plasma arc drop in second-generation thermionic converters. Final report

Description: Investigations of ion generation and recombination mechanisms in the cesium plasma as they pertain to the advanced mode thermionic energy converter are described. The changes in plasma density and temperature within the converter have been studied under the influence of several promising auxiliary ionization candidate sources. Three novel approaches of external cesium ion generation have been investigated in some detail, namely vibrationally excited N/sub 2/ as an energy source of ionization of… more
Date: March 31, 1981
Creator: Hatziprokopiou, M.E. & Shaw, D.T.
Partner: UNT Libraries Government Documents Department
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Large-area sheet task: advanced dendritic web growth development. Quarterly report, October 23-December 31, 1980

Description: Silicon dendritic web is a single crystal ribbon form of silicon capable of fabrication into solar cells with AM1 conversion efficiency in excess of 15%. Progress on a study to demonstrate the technology readiness of the web process to meet the national goals for low cost photovoltaic power is reported. Several refinements were introduced into the sensing and control equipment for melt replenishment during web growth and also several areas were identified for cost reduction in the components of… more
Date: January 31, 1981
Creator: Duncan, C. S.; Seidensticker, R. G.; McHugh, J. P.; Hopkins, R. H.; Meier, D.; Frantti, E. et al.
Partner: UNT Libraries Government Documents Department
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Evaluation of geothermal energy in Arizona. Quarterly topical progress report, January 1, 1980-March 31, 1981

Description: The tasks, objectives and completed work are discussed for the legislative and institutional program, cities program, geothermal applications utilization technology, and outreach. The work on the Maryvale Terrace development and the New Mexico Energy Institute are described. (MHR)
Date: March 31, 1981
Creator: White, D.H.; Goldstone, L.A. & Malysa, L.
Partner: UNT Libraries Government Documents Department
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Ceramic phases for immobilization of /sup 129/I. [Sodalite and boracite]

Description: Materials for ultimate disposal of /sup 129/I have been studied. At present, iodide-sodalite, though not ideal, appears to be the best material for /sup 129/I immobilization from the aspects of ease of preparation, thermal stability, cost of materials, and leach resistance. Good consolidation of the material was achieved by sintering in air at 1000 to 1200/sup 0/C, but the iodine content was significantly below stoichiometric expectations. Hot aqueous media preferentially removed iodine, appare… more
Date: July 31, 1981
Creator: Vance, E. R.; Agrawal, D. K.; Scheetz, B. E.; Pepin, J. G.; Atkinson, S. D. & White, W. B.
Partner: UNT Libraries Government Documents Department
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Geothermal development. Semi-annual report, October 1, 1980-March 31, 1981

Description: Three areas are reported: geothermal administration, geothermal planning, and other geothermal activities. Administration covers the status of the Imperial Valley Environmental Project transfer, update of the Geothermal Resource Center, and findings of the geothermal field inspections. Planning addresses Board of Supervisor actions, Planning Commission actions, notice of exemptions, and the master Environmental Impact Report for Salton Sea. The other activity includes the County Direct Heat Dev… more
Date: March 31, 1981
Partner: UNT Libraries Government Documents Department
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Technical analysis of advanced wastewater-treatment systems for coal-gasification plants

Description: This analysis of advanced wastewater treatment systems for coal gasification plants highlights the three coal gasification demonstration plants proposed by the US Department of Energy: The Memphis Light, Gas and Water Division Industrial Fuel Gas Demonstration Plant, the Illinois Coal Gasification Group Pipeline Gas Demonstration Plant, and the CONOCO Pipeline Gas Demonstration Plant. Technical risks exist for coal gasification wastewater treatment systems, in general, and for the three DOE dem… more
Date: March 31, 1981
Partner: UNT Libraries Government Documents Department
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Impurity study of TMX using ultraviolet spectroscopy

Description: An extreme ultraviolet (EUV) study of the emissions from intrinsic and injected impurities in TMX is presented. Two survey spectrographs were used to determine that the major impurities present were oxygen, nitrogen, carbon, and titanium. Three absolutely-calibrated monochromators were used to measure the time histories and radial profiles of these impurity emissions in the central cell and each plug. Two of these instruments were capable of obtaining radial profiles as a function of time in a … more
Date: January 31, 1981
Creator: Allen, S. L.; Strand, O. T.; Moos, H. W.; Fortner, R. J.; Nash, T. J. & Dietrich, D. D.
Partner: UNT Libraries Government Documents Department
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Silicon-germanium/gallium phosphide material in high power density thermoelectric modules. Final report, February 1980--September 1981

Description: This is the final report of work on the characterization of an improved Si-Ge alloy and the fabrication of thermoelectric devices. The improved Si-Ge alloy uses a small addition of GaP in n- and p- type 80 at.% Si-20 at.% Ge; this addition reduces the thermal conductivity, thereby increasing its figure of merit and conversion efficiency. The thermoelectric devices fabricated include multicouples intended for use in Radioisotope Thermoelectric Generators (RTGs) and ring-type modules intended for… more
Date: December 31, 1981
Partner: UNT Libraries Government Documents Department
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[Experimental and theoretical plasma physics program]. Technical progress [in FY 1981]

Description: In recent years, members of the Maryland Theory Group have made significant contributions to the national fusion theory programs and in many cases these theoretical development helped to interpret experimental results and to design new experimental programs. In the following, the authors summarize the technical progress in five major areas: (1) rf interaction with plasmas including wave propagation, rf heating, rf induced runaways and current drive; (2) spheromak -- formation, equilibrium, and … more
Date: December 31, 1981
Creator: Griem, H.
Partner: UNT Libraries Government Documents Department
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Hydrogen Diffusion Behavior in Titanium-Chromium Hydrides with Laves Structures

Description: Extensive NMR measurements of the proton relaxation times have been performed on low (i.e., alpha-phase) and intermediate (i.e., alpha'-phase) hydrogen concentrations in TiCr{sub}2H{sub}x with both the hexagonal Cl4 and cubic Cl5 Laves structures. The relaxation times indicate rapid diffusion rates above 200 K for all the TiCr{sub}2H{sub}x phases; however, large differences in the diffusion activation energies are observed. This behavior is associated with the hydrogen interstitial site occupan… more
Date: March 31, 1981
Creator: Bowman, R. C., Jr.; Craft, B. D.; Attalla, A. & Johnson, J. R.
Partner: UNT Libraries Government Documents Department
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[Hadroproduction of charmed and bottom mesons (Fermilab experiment E-653): Progress report, 1981]

Description: This report describes the design of a magnetic spectrometer facility to be built in the Tagged Photon Lab. The design has been developed by a collaboration of physicists from Fermilab, The University of California at Santa Barbara, The University of Colorado and The University of Toronto. This group was formed to build the facility and to carry out the experiment described in Proposal 516, which is a study of photoproduced states (including charm and hidden charm) with a forward mass > 2.5 GeV.… more
Date: December 31, 1981
Partner: UNT Libraries Government Documents Department
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