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Powerplant Productivity Improvement Study: project summary report

Description: Key findings from the Illinois Powerplant Productivity Improvement Study are: (1) the historic performance (equivalent availability) of large generating units in Illinois is below national average performance; (2) cost-effective opportunities to improve performance exist, and utilities pursue many of these; (3) there are no strong regulatory disincentives to the undertaking of productivity improvement projects, but no strong incentives either; (4) current utility practices, procedures, and mana… more
Date: December 21, 1979
Partner: UNT Libraries Government Documents Department
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Commercialization of a High Energy Neutral Beam Ion Source. Final Report

Description: This final report summarizes the effort and presents the results of a Phase II fabrication effort to build an industrial prototype of the LBL developed high energy neutral beam source. The effort was primarily concentrated on incorporating hard vacuum dielectric seals and a ceramic high voltage accelerator insulator. Several other design changes were incorporated for cost, reliability or life improvements to include: (1) accelerator grid locating dowel pins to aid final alignment, (2) plasma so… more
Date: December 21, 1979
Partner: UNT Libraries Government Documents Department
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Near Term Hybrid Passenger Vehicle Development Program. Phase I, Final report

Description: Activities performed in the Near Term Hybrid Vehicle (NTHV) program which studied the technical, economic, and fuel conservation aspects of replacing new 1985 full sized passenger cars in the US with automobiles having combination heat engines and electric motor power are summarized. These studies included NTHV design for the body power units, transmission system, and controls; evaluation of alternative strategies; the fuel conservation expected; goals for vehicle performance, safety and reliab… more
Date: September 21, 1979
Creator: Montalenti, P. & Piccolo, R.
Partner: UNT Libraries Government Documents Department
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Slicing of silicon into sheet material. Final report, January 9, 1976-September 30, 1979

Description: Complete results, from raw data to interpretation to recommendations, of a program to investigate the use of multiblade slurry sawing to produce silicon wafers from ingots are presented. During the course of this program, the commercially available state of the art process was improved by 20% in terms of area of silicon wafers produced from an ingot. The process was improved 34% on an experimental basis. Production of 20 wafers per centimeter length of 100 mm diameter ingot is now possible on a… more
Date: September 21, 1979
Creator: Fleming, J R; Holden, S C & Wolfson, R G
Partner: UNT Libraries Government Documents Department
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Development of Electrochemical Photovoltaic Cells. Second Technical Progress Report, August 1, 1979-October 31, 1979

Description: The development of stable, efficient, photoelectrochemical cells based on silicon and gallium arsenide in non-aqueous electrolyte systems is being investigated. Redox reactions of ferrocene, anthracene and anthraquinone have been studied on platinum and n-silicon electrodes. The latter have been further characterized by differential capacitance measurements. Cells and equipment have been designed and set up for long-term stability studies.
Date: November 21, 1979
Creator: Austin, A. E.; Byker, H. J. & Brooman, E. W.
Partner: UNT Libraries Government Documents Department
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Water-molten uranium hazard analysis. Final report. LATA report No. 92

Description: The hazard potential of cooling water leakage into the crucible of molten uranium in the MARS laser isotope separation experiment was investigated. A vapor-phase explosion is highly unlikely in any of the scenarios defined for MARS. For the operating basis accident, the gas pressure transient experienced by the vessel wall is 544 psia peak with a duration of 200 ..mu..s, and the peak hoop stress is about 20,000 psi in a 0.5-in. wall. Design and procedural recommendations are given for reducing … more
Date: August 21, 1979
Creator: Hughes, P.S.; Rigdon, L.D. & Donham, B.J.
Partner: UNT Libraries Government Documents Department
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LCPT: a program for finding linear canonical transformations. [In MACSYMA]

Description: This article describes a MACSYMA program to compute symbolically a canonical linear transformation between coordinate systems. The difficulties in implementation of this canonical small physics problem are also discussed, along with the implications that may be drawn from such difficulties about widespread MACSYMA usage by the community of computational/theoretical physicists.
Date: May 21, 1979
Creator: Char, B.W. & McNamara, B.
Partner: UNT Libraries Government Documents Department
open access

Reactor for simulation and acceleration of solar ultraviolet damage

Description: An environmental test chamber providing acceleration of uv radiation and precise temperature control (+- 1/sup 0/C) has been designed, constructed and tested. This chamber allows acceleration of solar ultraviolet up to 30 suns while maintaining temperature of the absorbing surface at 30/sup 0/C to 60/sup 0/C). This test chamber utilizes a filtered medium pressure mercury arc as the source of radiation, and a combination of selenium radiometer and silicon radiometer to monitor solar ultraviolet … more
Date: September 21, 1979
Creator: Laue, E. & Gupta, A.
Partner: UNT Libraries Government Documents Department
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Nuclear Chemistry Project. Progress report, Janary 1, 1979-December 31, 1979

Description: The first on-line operation of the Princeton electron spectrometer was achieved and its capability for fast life time measurements demonstrated. The first operation of the heavy ion source was achieved and beams of 75 meV /sup 12/C/sup +4/ ions and 37 MeV /sup 6/Li/sup +2/ ions demonstrated. The capability of the isotope separator to provide pure mass separated samples of radioisotopes is being utilized for three different applications. The very weak electron capture branch of 19-s krypton 81m … more
Date: December 21, 1979
Partner: UNT Libraries Government Documents Department
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Actinide recycle in LMFBRs as a waste management alternative

Description: A strategy of actinide burnup in fast reactor systems has been investigated as an approach for reducing the long term hazards and storage requirements of the actinide waste elements and their decay daughters. The actinide recycle studies also included plutonium burnup studies in the event that plutonium is no longer required as a fuel. Particular emphasis was placed upon the timing of the recycle program, the requirements for separability of the waste materials, and the impact of the actinides … more
Date: August 21, 1979
Creator: Beaman, S.L.
Partner: UNT Libraries Government Documents Department
open access

Segregation effects in JBK-75

Description: Chemical segregation of alloying elements, can be a severe problem in complex alloys. Many problems have been experienced with developing fabrication processes for JBK-75 and it is suggested that these difficulties may be related in part to the degree of chemical heterogeneity that exists in the alloy. Early testing and qualification of the alloy was made on relatively homogeneous samples, which came from small diameter ingots. In large size ingots used for production, it is more difficult to a… more
Date: December 21, 1979
Creator: Mataya, M. C.; Edstrom, C. M.; Krenzer, R. W. & Doyle, J. H.
Partner: UNT Libraries Government Documents Department
open access

Laser-driven shockwave experiments at extreme high pressures

Description: Laser-driven shockwave experiments have been proposed for accurate determination of equation of state data in the multimegabar pressure range. This paper gives a quantitative analysis of the prospects for such experiments. In order to unambiguously interpret shockwave data, one requires a clean shock -- that is, a planar, steady shock wave entering cold material (without significant preheat perturbation). The problems of attaining sufficiently clean shocks at high pressure are examined and scal… more
Date: September 21, 1979
Creator: More, R.M.
Partner: UNT Libraries Government Documents Department
open access

Defect states in plasma-deposited a-Si:H. Technical progress report, May-July 1979

Description: Three preprints are presented. The first, entitled ''Glow Discharge Optical Spectroscopy Measurement of Dopant Concentrations in a-Si:H,'' reports significant differences between the ratio of boron to silicon of the films and that of their deposition plasmas. The second, entitled ''Growth Morphology and Defects in Plasma-Deposited a-Si:H Films,'' presents structural studies that show that a major class of defect is an anisotropic density fluctuation. Studies of the hydrogen environment suggest … more
Date: September 21, 1979
Creator: Knights, J C
Partner: UNT Libraries Government Documents Department
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Measuring dirt on photovoltaic modules

Description: Soil accumulation has been the most significant factor in the degradation of the output of photovoltaic modules used in experimental solar power generating systems. One method of measuring dirt accumulation and the subsequent power loss is to return photovoltaic modules to the laboratory for thorough examination. The use of a Glossmeter as a practical alternative to laboratory examination in making quantitative measurements of dirt accumulation on PV modules is described. Of particular value fo… more
Date: March 21, 1979
Creator: Murphy, E B & Forman, S E
Partner: UNT Libraries Government Documents Department
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Optimum frequencies for regional detection of cavity-decoupled explosions

Description: The natures of compressional (P) waves that originate in the crust, propagate in the crust and upper mantle, and are observed as Pg, Pn, and anti P waves at regional distances are examined. The discussion includes the observed variations of amplitude with epicentral distance for these waves as well as an estimate of values for the specific dissipation function Q/sub ..cap alpha../ in different regions. Studies were made on theoretical source and propagation functions for direct, reflected, and … more
Date: March 21, 1979
Creator: Rodean, H.C.
Partner: UNT Libraries Government Documents Department
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Final report covering work done under LLL P. O. No. 4165009

Description: The High Field Test Facility (HFTF) to be built at Lawrence Livermore Laboratories (LLL) consists of a magnet which will be wound with Nb/sub 3/Sn superconductor. Embossed and electroplated copper strip will be soldered to the two broad sides of a rectangular Nb/sub 3/Sn superconductor 5.4 mm x 11.0 mm x approximately 100 m long. It is the purpose of this project to upgrade existing facilities to emboss the copper stabilizer strip, electroplate the strip with 50 Pb-50 Sn solder, and to solder t… more
Date: September 21, 1979
Creator: Spencer, C.
Partner: UNT Libraries Government Documents Department
open access

Final report on work done under LLL P. O. No. 3964609

Description: In comparing the results of extrusions of Nb, it was found that the non-uniformity of the Nb extruded at Teledyne Wah Chang Albany (TWCA) is more severe than the other. This correlates with results of the mechanical properties of Nb. Both specimens were given identical extrusion, cold work, and heat treatments. (FS)
Date: September 21, 1979
Creator: Spencer, C.
Partner: UNT Libraries Government Documents Department
open access

Analysis of thermal efficiency for hydrogasification and gasification/methanation

Description: To confirm the potentially greater thermodynamic efficiency of hydrogasification, a study was made of carbon conversion and resulting thermal efficiency of methane production via hydrogasification as compared to gasification/methanation. The alternative systems were first compared on an ideal process basis. This approach neglects limitations imposed by the thermodynamics and kinetics of the various chemical reactions and indicates maximum potential conversion of coal to methane. These results w… more
Date: December 21, 1979
Creator: DiNapoli, R.N.
Partner: UNT Libraries Government Documents Department
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Magnetic mirror confinement of high-energy, high-density plasma

Description: This paper summarizes results obtained from and work in progress on those experiments which have contributed significantly toward the confinement in single-cell magnetic mirror systems of plasmas close to thermonuclear conditions. Because the mirror confinement of such high-energy, high-density plasmas has been studied most extensively in the 2XIIB experiment, discussion of 2XIIB results forms a major portion of this paper. In these experiments, injection of low-energy plasma has been shown to … more
Date: August 21, 1979
Creator: Coensgen, F. H. & Simonen, T. C.
Partner: UNT Libraries Government Documents Department
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Tandem mirror and field-reversed mirror experiments

Description: This paper is largely devoted to tandem mirror and field-reversed mirror experiments at the Lawrence Livermore Laboratory (LLL), and briefly summarizes results of experiments in which field-reversal has been achieved. In the tandem experiment, high-energy, high-density plasmas (nearly identical to 2XIIB plasmas) are located at each end of a solenoid where plasma ions are electrostatically confined by the high positive poentials arising in the end plug plasma. End plug ions are magnetically conf… more
Date: August 21, 1979
Creator: Coensgen, F. H.; Simonen, T. C. & Turner, W. C.
Partner: UNT Libraries Government Documents Department
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