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Is the two-term expansion valid for highly anisotropic systems. The Townsend ionization coefficient in strong runaway as a test case

Description: The Townsend ionization coefficient in the strong runaway regime is calculated within the framework of the two-term expansion. Results are compared to the 1-D model. General features of the two models are qualitatively similar, but quantitative differences by factors of approx. 2 are observed.
Date: July 15, 1982
Creator: Yu, S. S. & Melendez, R. E.
Partner: UNT Libraries Government Documents Department
open access

Introduction to nuclear test engineering

Description: The basic information in this report is from a vu-graph presentation prepared to acquaint new or prospective employees with the Nuclear Test Engineering Division (NTED). Additional information has been added here to enhance a reader's understanding when reviewing the material after hearing the presentation, or in lieu of attending a presentation.
Date: July 15, 1982
Creator: O'Neal, W.C. & Paquette, D.L.
Partner: UNT Libraries Government Documents Department
open access

RMDF leach-field decontamination. Final report

Description: The objective of the decontamination effort was to place the Radioactive Materials Disposal Facility (RMDF) leach field in a condition suitable for release for unrestricted use. Radioactively contaminated soil was excavated from the leach field to produce a condition of contamination as low as reasonably achievable (ALARA). The contaminated soil was boxed and shipped to an NRC-licensed burial site at Beatty, Nevada, and to the DOE burial site at Hanford, Washington. The soil excavation project … more
Date: September 15, 1982
Creator: Carroll, J W; Marzec, J M & Stelle, A M
Partner: UNT Libraries Government Documents Department
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Mechanisms affecting mass transfer in fuel cells

Description: An initial analysis of particulate effects on molten carbonate fuel cells has been conducted. The analysis has been applied to a conceptual fuel cell with operating parameters appropriate to use with future power generation plants. Particle transport due to several mechanisms has been considered and dominant mechanisms affecting particle delivery to anode channel surfaces and into anode pores have been identified. Thermophoresis and gas flow out from anode pores have been found to inhibit parti… more
Date: March 15, 1982
Creator: Wenglarz, R.A.
Partner: UNT Libraries Government Documents Department
open access

Development of model reference adaptive control theory for electric power plant control applications

Description: The scope of this effort includes the theoretical development of a multi-input, multi-output (MIMO) Model Reference Control (MRC) algorithm, (i.e., model following control law), Model Reference Adaptive Control (MRAC) algorithm and the formulation of a nonlinear model of a typical electric power plant. Previous single-input, single-output MRAC algorithm designs have been generalized to MIMO MRAC designs using the MIMO MRC algorithm. This MRC algorithm, which has been developed using Command Gen… more
Date: September 15, 1982
Creator: Mabius, L.E.
Partner: UNT Libraries Government Documents Department
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Development program to support industrial coal gasification. Quarterly report 1

Description: The Development Program to Support Industrial Coal Gasification is on schedule. The efforts have centered on collecting background information and data, planning, and getting the experimental program underway. The three principal objectives in Task I-A were accomplished. The technical literature was reviewed, the coals and binders to be employed were selected, and tests and testing equipment to be used in evaluating agglomerates were developed. The entire Erie Mining facility design was reviewe… more
Date: January 15, 1982
Partner: UNT Libraries Government Documents Department
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Assessment of deposition for power-plant molten-carbonate fuel cells

Description: Particulate deposition in molten carbonate fuel cell anodes is addressed for operation with future coal gasification power plants. Power plant systems factors affecting deposition are explored such as gas cleanup requirements for particulate removal and gasifier product gas composition differences for various gasifier types and operational modes (air blown versus oxygen blown). Effects of fuel cell characteristics (including average cell current density and fuel utilization) on anode deposition… more
Date: March 15, 1982
Creator: Wenglarz, R. A.
Partner: UNT Libraries Government Documents Department
open access

Wisconsin collector-efficiency study, phase two

Description: The collector efficiency study developed a solar collector rating methodology specific to Wisconsin conditions. Existing rating programs were researched and a collector methodology was developed. A computer program was written to calculate the collector ratings and 25 collector models were rated. The accuracy of the proposed rating methodology was evaluated for 16 collectors placed in 11 domestic hot water systems. One liquid space heating analysis with storage and one air space heating analysi… more
Date: January 15, 1982
Creator: Abright, B.L.
Partner: UNT Libraries Government Documents Department
open access

Synthetic fuel aromaticity and staged combustion

Description: Samples of middle and heavy SRC-II distillates were distilled into 50 C boiling point range fractions. These were characterized by measurements of their molecular weight, elemental analysis and basic nitrogen content and calculation of average molecular structures. The structures typically consisted of 1 to 3 aromatic rings fused to alicyclic rings with short, 1 to 3 carbon aliphatic side chains. The lower boiling fractions contained significant amounts (1 atom/molecule) of oxygen while the hea… more
Date: November 15, 1982
Creator: Longanbach, J. R.; Chan, L. K. & Levy, A.
Partner: UNT Libraries Government Documents Department
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Health and safety evaluation of a modified tunnel-borer design for application to single-entry coal-mine development

Description: The health and safety analysis is part of an overall effort to identify and develop innovative underground coal extraction systems. The single-entry tunnel borer system was initially considered an innovative approach to underground mining because it exhibited a means of increasing the speed and efficiency of entry development by reducing the number of entries. However, to be considered a truly advanced system, the tunnel borer had to meet distinct safety criteria as well. The objective was to e… more
Date: February 15, 1982
Creator: Zimmerman, W. F.
Partner: UNT Libraries Government Documents Department
open access

Lasers in chemical processing

Description: The high cost of laser energy is the crucial issue in any potential laser-processing application. It is expensive relative to other forms of energy and to most bulk chemicals. We show those factors that have previously frustrated attempts to find commercially viable laser-induced processes for the production of materials. Having identified the general criteria to be satisfied by an economically successful laser process and shown how these imply the laser-system requirements, we present a status… more
Date: April 15, 1982
Creator: Davis, J.I.
Partner: UNT Libraries Government Documents Department
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Annual technical report: fiscal year 1981

Description: The activities of the JPL Solar Thermal Power Systems Parabolic Dish Project are summarized for FY 1981. Included are discussions on subsystem designs of concentrators, receivers, engines, power converters, and thermal transport. Analyses and test results are also included along with progress on field tests, Small Community System development and the Parabolic Dish Test Site.
Date: March 15, 1982
Partner: UNT Libraries Government Documents Department
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Theory and tests of two-phase turbines

Description: Two-phase turbines open the possibility of new types of power cycles operating with extremely wet mixtures of steam and water, organic fluids, or immiscible liquids and gases. Possible applications are geothermal power, waste-heat recovery, refrigerant expansion, solar conversion, transportation turbine engines, and engine bottoming cycles. A theoretical model for two-phase impulse turbines was developed. Apparatus was constructed for testing one- and two-stage turbines (using speed decrease fr… more
Date: March 15, 1982
Creator: Elliot, D.G.
Partner: UNT Libraries Government Documents Department
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BNL Neutral-Beam Development Group. Progress report FY 1981

Description: The Brookhaven High Energy Neutral Beam Development Group is developing injector systems, particularly for the next generation of fusion mirror and tokamak experiments. These injectors are based on the acceleration and neutralization of negative deuterium ions, to utilize their high neutralization efficiency which is nearly independent of energy above 50 keV/nucleon.
Date: January 15, 1982
Creator: Prelec, K. & Sluyters, T.
Partner: UNT Libraries Government Documents Department
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Evaluation of ADAM/1 model for advanced coal-extraction concepts

Description: The Advanced Coal Extraction Project is sponsored by the Department of Energy at the Jet Propulsion Laboratory to define and develop advanced underground coal extraction systems which: (1) are suitable for significant remaining resources after the year 2000, and (2) promise a significant improvement in production cost and miner safety, with no degradation in miner health, environmental quality and resource recovery. System requirements in the five performance areas have been defined by Goldsmit… more
Date: January 15, 1982
Creator: Deshpande, G. K. & Gangal, M. D.
Partner: UNT Libraries Government Documents Department
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Mitigation of biofouling using coatings, year 2. Quarterly progress report No. 2. [PWR; BWR]

Description: Objectives of this project are to evaluate benefits associated with control of the surface energetic properties of materials used in heat exchangers; and to identify preferred ranges of these surface conditions that minimize deposits of biological fouling known to deteriorate heat exchange efficiencies in cooling water systems. The technical approach employed uses special diagnostic plates in novel flow cells where fluid flow conditions can be well-controlled, modifying the surface chemistry an… more
Date: March 15, 1982
Creator: Meyer, A. E.
Partner: UNT Libraries Government Documents Department
open access

Relative radiation sensitivity of insulators, stabilizers, and superconductors

Description: The objective of this work was to compare the radiation sensitivity of the various parts of superconducting magnet systems. Using the radiation spectra calculated by Engholm for the Engineering Test Facility (ETF) toroidal field magnet inboard leg and available data on radiation effects, commonly used magnet components were ranked in order of radiation sensitivity. It was found that epoxy-based insulators and copper and aluminum stabilizers were the most sensitive parts of the magnets, more sen… more
Date: January 15, 1982
Creator: Van Konynenburg, R.A. & Guinan, M.W.
Partner: UNT Libraries Government Documents Department
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Evaluation of the Beijing Instrument Factory GDB-44F photomultipler

Description: Characteristics have been measured for the GDB-44F 2''-diameter photomultiplier. Some typical photomultiplier characteristics - such as gain, dark current, anode output current, transit and rise times as a function of voltage between anode and cathode, and photoelectron pulse-height spectrum, the quantum-efficiency and the single-electron transit time spread were measured. Descriptions of the measuring systems were also given.
Date: December 15, 1982
Creator: Young, E. & Lo, C.C.
Partner: UNT Libraries Government Documents Department
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Air-quality-model update

Description: The Livermore Regional Air Quality Model (LIRAQ) has been updated and improved. This report describes the changes that have been made in chemistry, species treatment, and boundary conditions. The results of smog chamber simulations that were used to verify the chemistry as well as simulations of the entire air quality model for two prototype days in the Bay Area are reported. The results for the prototype day simulations are preliminary due to the need for improvement in meteorology fields, but… more
Date: January 15, 1982
Creator: Penner, J.E. & Walton, J.J.
Partner: UNT Libraries Government Documents Department
open access

Energy Saver A-Sector Power Test Results

Description: The superconducting magnets and associated cryogenic components in A-sector represent the initial phase of installation of the Fermilab superconducting accelerator, designed to accelerate proton beams to energies of 1 TeV. Installation of the magnets, comprising one-eighth of the ring, was completed in December, 1981. Cooldown and power tests took place in the first half of 1982, concurrent with main ring use for 400 GeV high energy physics. The tests described in this paper involved 151 cryoge… more
Date: September 15, 1982
Creator: Martin, P.; Flora, R.; Tool, G. & Wolff, D.
Partner: UNT Libraries Government Documents Department
open access

Energy spectrum of neutrals formed in an ion accelerator

Description: This work presents an estimate of the energy distribution of the neutrals formed in the ion beam accelerator. However it does not determine the fraction of those neutrals which leave the neutral beam injector and go on into the reactor. To do that, more details of the beam line performance are needed.
Date: March 15, 1982
Creator: Fink, J.H.
Partner: UNT Libraries Government Documents Department
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Physics and numerics of the tensor code (incomplete preliminary documentation)

Description: The present TENSOR code is a descendant of a code originally conceived by Maenchen and Sack and later adapted by Cherry. Originally, the code was a two-dimensional Lagrangian explicit finite difference code which solved the equations of continuum mechanics. Since then, implicit and arbitrary Lagrange-Euler (ALE) algorithms have been added. The code has been used principally to solve problems involving the propagation of stress waves through earth materials, and considerable development of rock … more
Date: July 15, 1982
Creator: Burton, D.E.; Lettis, L.A. Jr.; Bryan, J.B. & Frary, N.R.
Partner: UNT Libraries Government Documents Department
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Scanning-Electron-Microscopy Study of Corrosion and Surface Features in Glass Microballoons

Description: Gaseous acid treatment (HBr) of surface-hardened binary glass microballoons results in etching and the growth of salt nodules, tubes or whiskers, depending on moisture conditions. Temperatures from 400/sup 0/C to 625/sup 0/C for 24 h or more are required for the effects to be significant. Numerous imperfections, including craters, are documented on the unexposed interiors surfaces. The evident phase separation and nucleation sites suggest a need for better production controls and post-productio… more
Date: September 15, 1982
Creator: Bystroff, R. I.
Partner: UNT Libraries Government Documents Department
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Theoretical studies of chemisorption on transition-metal surfaces: interaction of hydrogen with titanium. Final report, June 1, 1977-August 31, 1982

Description: The research concerns the theory of chemisorption of molecules on solid surfaces: the development of a general formalism, and specific applications to the hydrogen-titanium system. The objective is to develop a suitable formalism for treating electronic interactions at an ab initio level when both localized and delocalized interactions occur, as in the case of molecular adsorption on a metallic surface. For H/sub 2/ and CO adsorption on titanium, the goal is a determination of the energetics of… more
Date: October 15, 1982
Creator: Whitten, J.L.
Partner: UNT Libraries Government Documents Department
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