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Analysis of effects of impurities intentionally incorporated into silicon. Final report, Feburary 1, 1977--December 1, 1977

Description: A methodology has been developed and implemented to allow silicon samples containing intentionally incorporated impurities to be fabricated into finished solar cells under carefully controlled conditions. The electrical and spectral properties were then measured for each group processed, and this data, along with all the material, (cells and scrap) were delivered to JPL for further analysis. All 33 lots of Group ''C'', 14 lots of Group ''CM'' and 16 lots of Group ''F'' have been fabricated into cells, tested and delivered to JPL.
Date: December 15, 1977
Creator: Uno, F.
Partner: UNT Libraries Government Documents Department

Silicon ribbon growth by a capillary action shaping technique. Quarterly technical progress report No. 5

Description: MOS C-t measurements were used to characterize lifetime in CAST crystals and its dependency on crystal defects. Four classes of ribbon perfection are defined. These perfection categories are coordinated with lifetime ranges and efficiency ranges of solar cells. Lifetime degrading properties of different defects are qualitatively discussed in terms of ''electrical activity.'' Electrical activity measurements of crystallographic defects in ribbons were made through the SEM EBIC techniques using Schottky contacts and p-n junction for EBIC contrast. Quantitative ''electrical activity'' measurements of line defects in ribbons were made through carrier diffusion length measurements. Line defects are shown to decrease minority-carrier lifetime by one to two orders of magnitude. (WDM)
Date: September 15, 1976
Creator: Schwuttke, G. H.; Ciszek, T. F. & Kran, A.
Partner: UNT Libraries Government Documents Department

Executive summary of the special safeguards study on material control and accounting systems. Final report. [Real-time systems]

Description: This report assesses the feasibility of real-time systems applied to mixed-oxide fuel rod fabrication. Their interaction with other material control and accounting measures are considered. Economics, effectiveness, and acceptance factors are discussed. A cost-benefit evaluation is made and recommendations given for safeguards improvements. (DLC)
Date: September 15, 1975
Creator: none,
Partner: UNT Libraries Government Documents Department

Development of a practical photochemical energy storage system. Quarterly report. [Interconversion between norbornadiene and quadricyclene for thermochemical heat storage]

Description: Research on polymeric organic sensitizers and polymeric inorganic sensitizers for the conversion of norbornadine to quadricyclene and catalysts for the conversion of quadricyclene to norbornadine is described. The interconversion of norbornadine and quadricyclene is studied for its possible use for thermochemical solar energy storage. (WHK)
Date: June 15, 1977
Creator: Hautala, R. R. & Kutal, C. R.
Partner: UNT Libraries Government Documents Department

Solid state chemistry of rare earth oxides. Technical progress report, 1975--1976. [Pr/sub 7/O/sub 12/; Pr/sub 10/O/sub 18/; HfO/sub 2/. xEr/sub 2/O/sub 3/]

Description: It has been demonstrated that electron microscope images obtained at about 3A resolution for Pr/sub 7/O/sub 12/ are in agreement with calculated images based upon known structures. This establishes the efficacy of crystal structure image interpretation in structural terms, including the defect structure and mechanism of phase reactions, for these types of related phases whose structures are as yet beyond conventional means to determine. Further work on the epsilon (Pr/sub 10/O/sub 18/) phase is reported both utilizing electron optical methods and single crystal X-ray techniques. The ternary ceramic system HfO/sub 2/.xEr/sub 2/O/sub 3/ is being examined using electron optical techniques and ordering not hitherto reported is being observed. An interactive crystal structure image calculation system is being developed which will permit the immediate comparison of enhanced images synthesized from trial structures (including defects) and displayed in juxtaposition on a graphics unit. 22 fig. (auth)
Date: April 15, 1976
Creator: Eyring, L.; Skarnulis, A. J.; Tuenge, R. T. & Von Dreele, R. B.
Partner: UNT Libraries Government Documents Department

Non-euclidean simplex optimization. [Application to potentiometric titration of Pu]

Description: Geometric optimization techniques useful for studying chemical equilibrium traditionally rely upon principles of euclidean geometry, but such algorithms may also be based upon principles of a non-euclidean geometry. The sequential simplex method is adapted to the hyperbolic plane, and application of optimization to problems such as the potentiometric titration of plutonium is suggested.
Date: August 15, 1977
Creator: Silver, G. L.
Partner: UNT Libraries Government Documents Department

Summary report of the compressive creep properties of irradiated and unirradiated molybdenum. [Fast neutrons]

Description: Compressive creep tests were performed on molybenum samples exposed to four different pre-test conditions: (1) annealed; (2) annealed and neutron irradiated at 480/sup 0/C to a fluence of 5 x 10/sup 19/ n cm/sup -2/ (E > 1 MeV); (3) stress-relieved; and (4) stress-relieved and neutron irradiated at reactor ambient temperature to a fluence of 1 x 10/sup 19/ n cm/sup -2/ (E > 1 MeV). The tests were performed in the temperature range of 600 to 900/sup 0/C with an initial applied stress of 176.5 MPa. Both pre- and post-test specimens were examined using electron microscopy and the relationship between substructure and mechanical properties is discussed. Possible controlling mechanisms of deformation are proposed and activation energies for creep are determined.
Date: April 15, 1977
Creator: Zielinski, R. E.
Partner: UNT Libraries Government Documents Department

Nuclear safety characterization of sodium fires and fast reactor fission products. Quarterly technical progress report, January--March 1976

Description: Progress is reported in the areas of sodium jet dispersed tests, SOMIX code development, iodine attenuation tests, aerosol leakage tests, characterization of aerosols from vaporized fuel, and high-temperature properties of fuel materials.
Date: May 15, 1976
Partner: UNT Libraries Government Documents Department

Large area silicon sheet by EFG. Second quarterly progress report, January 1, 1976--March 31, 1976

Description: The thin/fast growth system (JPL No. 2) is modified and operational. An orientation study was run on this system prior to the changeover and thermal geometry experiments have been run since. (110) (211) seed orientation appears to be the optimum. Solar cells have been fabricated from the ribbon material and tested. The wide ribbon system (JPL No. 1) is being designed. Some parts are ordered. The theoretical analysis of heat flow in EFG silicon growth is expanded.
Date: March 15, 1976
Creator: Morrison, A D; Ravi, K V; Hari Rao, C V; Surek, T; Bliss, D F & Garone, L C
Partner: UNT Libraries Government Documents Department

Solar pilot plant, phase I. Quarterly report No. 4, July--September 1976

Description: The technical and economic feasibility of generating electricity from solar energy is being studied. Collector experiments included heliostat tests. Hardware preparation and assembly constituted the steam generator work. The thermal storage subsystem research experiment, which featured thermal energy storage in a sodium nitrite/sodium hydroxide phase-change mixture, was discontinued. Analytical and design work on the electrical generation subsystem and plant integration progressed satisfactorily. (MHR)
Date: January 15, 1977
Partner: UNT Libraries Government Documents Department

CTR plasma engineering studies. Progress report, 1 September 1975--30 Jun 1976

Description: During the past contract period, this research has been concerned with three principal tasks, namely: (1) Fusion-product studies. The primary objective of this work is to study potential effects (e.g. instabilities, changes in heating profile and wall loadings, etc.) caused by high-energy fusion products. A second objective is to establish the operating conditions and measurements required for use of D-/sup 3/He in early experiments such as TFTR to simulate D-T burns. (2) Mirror system studies. The objective of this work is to provide specialized support for the mirror research and development effort at the Lawrence Livermore Laboratory. Three topics are under study: charge-exchange losses during neutral beam injection; the dynamics of plasma build-up during start-up; new approaches to mirror systems such as the ''twin-beam'' mirror. (3) Exploratory studies. Several new studies have been initiated during this period. These include: extension of the mirror neutral-beam injection studies to toroidal geometry and preliminary studies of reversed field configurations. Further details about each of these areas are contained in subsequent sections.
Date: April 15, 1976
Creator: Miley, G. H.
Partner: UNT Libraries Government Documents Department

Toxicology and metabolism of nickel compounds. Progress report, December 1, 1974--November 30, 1975. [97433ONE]

Description: The toxicology and metabolism of nickel compounds (NiCl/sub 2/, Ni/sub 3/S/sub 2/, NiS, and Ni powder) were investigated in rats and hamsters. The new knowledge has included: demonstration that hyperglucagonemia is primarily responsible for the acute hyperglycemic effect of parenteral Ni(II) in rats; demonstration that parenteral injection of Ni(II) in rats produces acute nephropathy with proteinuria and amino aciduria, and with ultrastructural lesions of renal glomeruli and tubules; confirmation of the inhibitory effect of manganese upon the carcinogenicity of Ni/sub 3/S/sub 2/ after intramuscular injection in rats, and elucidation of the effects of manganese upon the rates of excretion of nickel, and upon the acute histological reactions produced by Ni/sub 3/S/sub 2/; discovery that the antidotal efficacy of triethylenetetramine (TETA) in acute Ni(II) poisoning in rats is substantially greater than that of other chelating agents, including ..cap alpha..-lipoic acid, diethyldithiocarbamate, d-penicillamine, and glycylglycyl-L-histidine-N-methylamide; observation that the acute renal toxicity of Ni(II) is suppressed by administration of TETA, but that the hyperglycemic and hyperglucagonemic responses to Ni(II) are not prevented by TETA; confirmation that marked erythrocytosis is induced in rats by a single intrarenal injection of Ni/sub 3/S/sub 2/, and elucidation of the time-response and dose-response relationships for the Ni-induced erythrocytosis. (auth)
Date: August 15, 1975
Creator: Sunderman, F. W. Jr.
Partner: UNT Libraries Government Documents Department

Energy and protein production from pulp mill wastes. Progress report, September 15, 1976--December 15, 1976

Description: Significant progress was made during the past quarter in establishing the operability and reliability of major pieces of equipment needed for the production of protein and methane from spent sulfite liquor (SSL). Batch ozonations of SSL were conducted at times varying from 1 to 6 hours at pH's in the range of 10 to 2. These screening experiments consistently indicate that low ph's favor the breakdown of SSL into organic fragments which are more easily assimulated by micro-organisms. Approximately 23% of the organics are oxidized at all pH levels indicated that pH has no effect on the total oxidation of SSL. As was expected total sulfur content of SSL is not measurably altered by ozonation. The intense brown color of SSL is appreciably removed during ozonation. The contents of the reactor assume a light brownish-yellow hue during the course of a 4 hour ozonation treatment. Attempts to quantify the reduction have not been successful to date.
Date: December 15, 1976
Creator: Jurgensen, M. F. & Patton, J. T.
Partner: UNT Libraries Government Documents Department

Dynamic Isotope Power System: technology verification phase, program plan, 1 October 1978

Description: The technology verification phase program plan of the Dynamic Isotope Power System (DIPS) project is presented. DIPS is a project to develop a 0.5 to 2.0 kW power system for spacecraft using an isotope heat source and a closed-cycle Rankine power-system with an organic working fluid. The technology verification phase's purposes are to increase the system efficiency to over 18%, to demonstrate system reliability, and to provide an estimate for flight test scheduling. Progress toward these goals is reported. (LCL)
Date: January 15, 1979
Partner: UNT Libraries Government Documents Department

Evaluation of nondestructive assay system performance on Z-9 crib soil measurements. Phase I

Description: Evaluation of the NDA measurement results for the plutonium content of the first sixteen canisters of soil removed from the 216-Z-9 Crib Mining Facility has been completed. Results from the Soil Assay Monitor System (SAMS) were found to be biased 25 to 55 percent high in relation to the Segmented Gamma Scan Assay System (SGSAS) measurements. Within experimental error, this bias can be explained on the basis of differences in matrix density between the Los Alamos Scientific Laboratories (LASL)-prepared calibration standards and the mined soil, and to the inability of the SAMS instrument to correct for these differences. The major reason for this matrix density difference is due to the high moisture and organic content of the Z-9 surface soils when compared to the simulated standards. Correction factors have been calculated which provide for adjustment of SAMS analytical results. These factors have been used to correct the SAMS results of the original sixteen canisters, the succeeding six canisters, and remeasurements of two of the original canister group. It is recommended that derived correction factors be applied on a test basis for the remainder of the fifty canister analytical test, at which time a further evaluation will be performed. Both NDA and destructive analytical techniques are being considered at this time. Until these alternate measurements are completed, it is suggested, based on previous experience with other sample types, that the SGSAS analytical results be used in making accountability, criticality, and disposal decisions related to these fifty canisters.
Date: October 15, 1976
Creator: Smith, H. E.
Partner: UNT Libraries Government Documents Department

244-S Catch Station conceptual design report

Description: The faciliies described will provide a direct route from the 241-S-151 and 241-U-151 Diversion Boxes to the 241-SY Tanks. The 244-S Catch Station will consist of a 20,000 gallon primary tank contained within a concrete vault lined with carbon steel. Encased three-inch carbon steel process lines will be extended to the catch station pump pit from the 241-SY Tank Farm, the 241-S-151 Diversion Box and the 241-U-151 Diversion Box encasement. The facility will have its own ventilation system for exhausting the primary tank and the annulus area. A small instrument shack will house locally mounted instrumentation and controls. Existing designs for Project B-103 will be used where similarities exist (H-2-38200). The project is expected to cost $1,900,000 and require 19 months for the initiation of Title I design until construction is complete.
Date: October 15, 1976
Creator: Garfield, J. S.
Partner: UNT Libraries Government Documents Department

Relating spatial distributions of pollutants to health effects. Technical report No. 1. [Relation of air pollution to epidemics of respiratory diseases]

Description: A new and potentially useful statistical tool for epidemiology is introduced and some of its elementary properties are considered. The technique is a promising one for both data-analytic and inferential problems. Starting with the collection of isopleths of a spatially distributed explanatory variable (air pollution), the method produces a relationship between the explanatory variable(s) and the response variable (population-adjusted health effects) by accumulating the response within successively wider isopleths. Among other appealing features, the method has some of the flavor of regression, reduces the relationship between three three-dimensional distributions to a single easily interpreted two-dimensional graph, and effectively utilizes knowledge of the geographic location of data before discarding the location coordinates as nuisance parameters.
Date: July 15, 1976
Creator: Sager, T. W.
Partner: UNT Libraries Government Documents Department

Aspects of safety and reliability for fusion magnet systems first annual report

Description: General systems aspects of fusion magnet safety are examined first, followed by specific detailed analyses covering structural, thermal, electrical, and other aspects of fusion magnet safety. The design examples chosen for analysis are illustrative and are not intended to be definitive, since fusion magnet designs are rapidly evolving. Included is a comprehensive collection of design and operating data relating to the safety of existing superconducting magnet systems. The remainder of the overview lists the main conclusions developed from the work to date. These should be regarded as initial steps. Since this study has concentrated on examining potential safety concerns, it may tend to overemphasize the problems of fusion magnets. In fact, many aspects of fusion magnets are well developed and are consistent with good safety practice. A short summary of the findings of this study is given.
Date: January 15, 1976
Creator: Powell, J. (ed.)
Partner: UNT Libraries Government Documents Department

Filament power regulator for thermal ionization mass spectrometry

Description: A device has been developed that will control the filament temperature in a thermal ionization mass spectrometer. The arrangement is superior to past methods to control this critical parameter. The operating principle lies in the feature of filament power control as contrasted with the formerly used voltage or current controls. Reproducibility and stability of ion beams showed great improvement. The mass spectrometer was developed to analyze for parts-per-billion concentrations of uranium in water samples.
Date: September 15, 1977
Creator: Rogers, E. R. & Ferguson, J. R.
Partner: UNT Libraries Government Documents Department

Comparison of bedrock and surface seismic input for nuclear power plants

Description: Current practice in the nuclear industry and elsewhere is to specify the seismic input to design calculations at the surface of the site, rather than at bedrock. This paper investigates the implications of such a specification by comparing the site response of a surface specification to the site response of a corresponding bedrock specification. The investigation considered six different sites consisting of three soil profiles with average shear wave velocities of 800, 1800, and 5000 ft/sec and two oil depths: 200 ft. and 400 ft. Seismic input to these sites consisted of two synthetic accelerograms: one corresponding to Blume's statistically averaged surface response spectrum taken as surface input, the other accelerogram was, in our judgment, a typical bedrock acceleration time history related to the surface synthetic accelerogram. The site response was calculated using the program SHAKE. The deconvolution results indicate that Blume's statistically averaged surface response spectrum envelops all the spectra from lower levels for hard and intermediate sites. When the corresponding bedrock acceleration is used as input for a convolution, the surface acceleration can be greater than Blume's surface spectral acceleration. It is very difficult to calculate physically meaningful results for the soft sites for both convolution and deconvolution. These difficulties are certainly related to physical constraints on the input.
Date: January 15, 1976
Creator: Zaslawsky, M. & Wight, L.
Partner: UNT Libraries Government Documents Department

Characteristics of geothermal wells located in the Salton Sea geothermal field, Imperial County, California

Description: A summary is given of the geophysical, geochemical, and geothermal characteristics of wells located in the Salton Sea Geothermal Field. Based on the geothermal characteristics of the wells, a subsurface heat profile was developed for the entire geothermal field. Maps of temperature contours for specified depths throughout the field were also drawn.
Date: December 15, 1975
Creator: Palmer, T. D.
Partner: UNT Libraries Government Documents Department

Calculation of emission from hydrogenic ions in super liquid density plasmas

Description: Previous calculations of line emission were extended to higher density, lower temperature plasmas, typical of those expected in early ablative compression experiments. Emission from Ne-seeded fuel was analyzed in order to diagnose the density and temperature of the compressed core. The Stark/Doppler broadened emission profile is calculated for the H-like Ne resonance line. The observable lineshape is then obtained by time-averaging over expected density and temperature profiles and by including the effects of radiative transfer.
Date: November 15, 1976
Creator: Bailey, D. S. & Valeo, E. J.
Partner: UNT Libraries Government Documents Department