UNT Libraries Government Documents Department - 79 Matching Results

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Absorption spectrophotometric characterization of Sm(II), Sm(III), and Sm(II/III) bromides and Sm(III) oxybromide in the solid state

Description: Absorption spectra obtained from SmBr/sub 3/, SmBr/sub 2/, and Sm0Br were used in identifying the samarium species in several mixed-valence Sm(II/III) compounds produced by H/sub 2/ reduction of SmBr/sub 3/. The nature of the absorption of Sm0Br made it possible to detect even traces of Sm0Br in the Sm bromides.
Date: June 15, 1981
Creator: Wood, A. B.; Young, J. P.; Peterson, J. R. & Haschke, J. M.
Item Type: Refine your search to only Article
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Advanced Pressurized Water Reactor for Improved Resource Utilization: Part I - Survey of Potential Improvements

Description: This document is an interim report under ACDA BOA AC9NX707, Task Order 80-03, which covers the evaluation of certain potential improvements in pressurized water reactor designs intended to enhance uranium fuel utilization. The objective of these evaluations is to seek advanced, non-retrofittable improvements that could possibly be commercialized by the end of the century, and, on the basis of a preliminary evaluation, to select compatible improvements for incorporation into a composite advanced… more
Date: September 15, 1981
Creator: Turner, S. E.; Gurley, M. K.; Kirby, K. D. & Mitchell, W., III
Item Type: Refine your search to only Report
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Advanced pressurized water reactor for improved resource utilization, part II - composite advanced PWR concept

Description: This report evaluates the enhanced resource utilization in an advanced pressurized water reactor (PWR) concept using a composite of selected improvements identified in a companion study. The selected improvements were in the areas of reduced loss of neutrons to control poisons, reduced loss of neutrons in leakage from the core, and improved blanket/reflector concepts. These improvements were incorporated into a single composite advanced PWR. A preliminary assessment of resource requirements and… more
Date: September 15, 1981
Creator: Turner, S. E.; Gurley, M. K.; Kirby, K. D. & Mitchell, W., III
Item Type: Refine your search to only Report
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Advances in optical materials for large aperture lasers

Description: Lawrence Livermore National Laboratory (LLNL) is using large aperture Nd: glass lasers to investigate the feasibility of inertial confinement fusion. In our experiments high power laser light is focussed onto a small (100 to 500 micron) target containing a deuterium-tritium fuel mixture. During the short (1 to 5 ns) laser pulse the fuel is compressed and heated, resulting in fusion reactions. The generation and control of the powerful laser pulses for these experiments is a challenging scientif… more
Date: December 15, 1981
Creator: Stokowski, S. E.; Lowdermilk, W. H.; Marchi, F. T.; Swain, J. E.; Wallerstein, E. P. & Wirtenson, G. R.
Item Type: Refine your search to only Article
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The Air-Launched Balloon System (ALBS) Development Program, Phase 2

Description: Abstract: The circumstances leading to the second phase of the Air-Launched Balloon System Development Program are described, along with the governing design constraints. Individual component development efforts and system design modifications are described in turn: the procurement and testing of the new dewar, the qualification of the updated cryogenic unit recovery system. The complicated command, control, and telemetry subsystem is also described in detail. The results of component tests and… more
Date: December 15, 1981
Creator: Carten, Andrew S., Jr.
Item Type: Refine your search to only Report
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Antiproton Yields for Stochastic Accumulation

Description: Two sets of parameters have been developed to study stochastic accumulation. The question arises of the size of the transverse emittance required to achieve an antiproton yield of 1.2 x 10{sup 8} {bar p}'s/MR cyc1e for 4.5 GeV and 8 GeV {bar p} kinetic energies, given a full momentum acceptance of 4%. The results quoted in the paper are obtained with a Monte Carlo program which uses a fit to the {bar p} production invariant cross section that has been presented previously. An article describing… more
Date: July 15, 1981
Creator: Hojnat, Carlos & Ginneken, A.Van
Item Type: Refine your search to only Report
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Basic Combustion and Pollutant-Formation Processes for Pulverized Fuels. Quarterly Technical Progress Report No. 1, 1 October 1980-31 December 1980

Description: A study of basic combustion and pollutant formation processes for pulverized solid fossil fuels has been initiated. The solid fossil fuels under consideration for this research include such solid fuels as non-bituminous coal types, solvent refined coal, combustion char, petroleum coke, oil shale and tar sand. The potential industrial application of pulverized fuels other than coal provides some promise for relief from present and future conventional fuel shortages. Utilization problems with the… more
Date: January 15, 1981
Creator: Germane, Geoffery J. & Smoot, L. Douglas
Item Type: Refine your search to only Report
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Basic Combustion and Pollutant-Formation Processes for Pulverized Fuels. Quarterly Technical Progress Report No. 4, 1 July 1981-30 September 1981

Description: This contract study of basic combustion and pollutant formation processes for pulverized solid fossil fuels includes coal-water mixtures and chars derived from coal pyrolysis, liquefaction or gasification processes. The factors that affect the physical properties of coal-water mixtures (CWM) have been identified and characterization tests initiated to determine how these variables (e.g., solids loading, particle size, particle size distribution, additives) affect the coal slurries. A bench-scal… more
Date: October 15, 1981
Creator: Germane, G. J. & Smoot, L. D.
Item Type: Refine your search to only Report
open access

BNL neutral beam development group. Progress report FY 1980

Description: The objective of the BNL Neutral Beam Program is to develop a 250 keV neutral beam system suitable for heating and other experiments in toroidal or mirror plasma devices. The system is based on acceleration and neutralization of negative hydrogen ions produced in and directly extracted from a source. The objective of source studies is to develop a module delivering 10 A of negative ion currents, with pulse lengths ranging from several seconds duration up to a steady-state operation. The extract… more
Date: January 15, 1981
Creator: Prelec, K. & Sluyters, T.
Item Type: Refine your search to only Report
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Catalysts for upgrading coal-derived liquids. Quarterly report, January 1-March 31, 1981

Description: Run ZBF was conducted to determine the amount of sulfur and nitrogen removal from SRC-I/process solvent mixture in the absence of a hydrotreating catalyst. Negligible nitrogen and sulfur removal resulted from this experiment. The hydrogen content of the coal liquid increased slightly over that of the feedstock. In similar studies using other coal liquids some sulfur removal (10 to 40%) was noted under non-catalyzed conditions. Several commercial NiMo supported catalysts were analyzed for silica… more
Date: April 15, 1981
Creator: Crynes, B L
Item Type: Refine your search to only Report
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Collimator design for neutron imaging of laser-fusion targets

Description: Several pinhole collimator geometries for use in neutron imaging experiments have been modeled and compared. Point spread functions are shown for a cylinder, hyperbola, intersecting cones, and a five-zone approximation to the intersecting cones. Of the geometries studied, the intersecting cones appear the most promising with respect to neutron efficiency, field of view, and isoplanatism.
Date: December 15, 1981
Creator: Sommargren, G. E. & Lerche, R. A.
Item Type: Refine your search to only Report
open access

Collisional processes of interest in MFE plasma research. Annual report, October 1, 1980-September 30, 1981

Description: Research on this contract can be divided into two general topics: (1) D/sup -/ formation collision processes, and (2) the determination of scattering cross sections used to diagnose properties of magnetically-confined plasmas. For topic (1) during last year, we completed theoretical calculations on the differential (angular) scattering of H/sup 0/ and D/sup 0/ on Cs, and determined the mechanisms and trends in the electron detachment cross sections for collisions of H/sup -/ and D/sup -/ on He,… more
Date: October 15, 1981
Creator: Olson, R.E.
Item Type: Refine your search to only Report
open access

Correction for spectral mismatch effects on the calibration of a solar cell when using a solar simulator

Description: A general expression has been derived to enable calculation of the calibration error resulting from simulator-solar AMX spectral mismatch and from reference cell-test cell spectral mismatch. The information required includes the relative spectral response of the reference cell, the relative spectral response of the cell under test, and the relative spectral irradiance of the simulator (over the spectral range defined by cell response). The spectral irradiance of the solar AMX is assumed to be k… more
Date: January 15, 1981
Creator: Seaman, C.H.
Item Type: Refine your search to only Report
open access

Cosmic-ray-produced stable nuclides: various production rates and their implications

Description: The rates for a number of reactions producing certain stable nuclides, such as /sup 3/He and /sup 4/He, and fission in the moon are calculated for galactic-cosmic-ray particles and for solar protons. Solar-proton-induced reactions with bromine usually are not an important source of cosmogenic Kr isotopes. The /sup 130/Ba(n,p) reaction cannot account for the undercalculation of /sup 130/Xe production rates. Calculated production rates of /sup 15/N, /sup 13/C, and /sup 2/H agree fairly well with … more
Date: June 15, 1981
Creator: Reedy, R. C.
Item Type: Refine your search to only Article
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Critical parameters for coarse coal underground slurry haulage systems

Description: This report describes the basic parameters which directly influence the behavior of a coal slurry pipeline transportation system and determine the limitations of the system performance. The purpose of this technology assessment is to provide an identification and understanding of the critical factors which must be given consideration in the design and evaluation of such a slurry haulage system intended for use in an underground coal mine. The slurry haulage system will be utilized to satisfy th… more
Date: February 15, 1981
Creator: Maynard, D.P.
Item Type: Refine your search to only Report
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Development of a pilot-scale kinetic extruder feeder system and test program. Second quarterly technical progress report, January-March 1981

Description: This report covers the work carried out during the January-March 1981 quarter of the program. Preparations are being made to ready the equipment for the moisture tolerance test program. The main effort described pertains to the redesign and procurement of the main shaft bearing and seal system. To enhance the chances of achieving the program objectives, the recommendation was made by Lockheed to use a conventional roller bearing for the present program instead of the advanced water-lubricated b… more
Date: April 15, 1981
Item Type: Refine your search to only Report
open access

Earth Sciences Division collected abstracts: 1980

Description: This report is a compilation of abstracts of papers, reports, and talks presented during 1980 at national and international meetings by members of the Earth Sciences Division, Lawrence Livermore National Laboratory. The arrangement is alphabetical (by author). For a given report, a bibliographic reference appears under the name of each coauthor, but the abstract itself is given only under the name of the first author (indicated in capital letters) or the first Earth Sciences Division author.
Date: October 15, 1981
Creator: Henry, A.L. & Hornady, B.F. (eds.)
Item Type: Refine your search to only Report
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Electric and hybrid vehicles charge efficiency tests of ESB EV-106 lead-acid batteries

Description: Charge efficiencies were determined for ESB EV-106 lead-acid batteries by measurements made under widely differing conditions of temperature, charge procedure, and battery age. The measurements were used to optimize charge procedures and to evaluate the concept of a modified, coulometric state-of-charge indicator. Charge efficiency determinations were made by measuring gassing rates and oxygen fractions. A novel, positive displacement gas flow meter which proved to be both simple and highly acc… more
Date: January 15, 1981
Creator: Rowlette, J.J.
Item Type: Refine your search to only Report
open access

Energy conservation in citrus processing. Technical progress report No. 2, April 1, 1980-February 28, 1981

Description: Systems that reduce energy usage and are economically viable in the citrus fruit processing industry are identified. The preliminary results of Phase I are presented. Alternative systems to be considered are classified and denoted as central, modular, integrated, and combined. Progress is reported on the central and modular systems. (MCW)
Date: March 15, 1981
Creator: Leo, M. A.; Lari, R. I.; Moore, N. R.; Broussard, M. R. & Gyamfi, M.
Item Type: Refine your search to only Report
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