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Lack of immediate effects from the 1979-80 Imperial and Victoria earthquakes on the exploited Cerro Prieto geothermal reservoir

Description: In 1979-1980 two large earthquakes of local magnitude (M/sub L/) greater than 6.0 occurred near the Cerro Prieto geothermal field. It has been suggested that related to these seismic events there was an abrupt temperature increase in the wells completed in the shallow (alpha) reservoir. A careful study of the geochemistry of the produced fluids, as well as a cursory reservoir engineering analysis, cannot confirm either the data or the hypothesis of a massive influx of hot water into the system … more
Date: June 1, 1986
Creator: Truesdell, A.H. & Lippmann, M.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Effect of irradiation-induced defects on fusion reactor ceramics

Description: Structural, thermal, and electrical properties critical to performance of ceramics in a fusion environment can be profoundly altered by irradiation effects. Neutron damage may cause swelling, reduction of thermal conductivity, increase in dielectric loss, and either reduction or enhancement of strength depending on the crystal structure and defect content of the material. Absorption of ionizing energy inevitably leads to degradation of insulating properties, but these changes can be reduced by … more
Date: January 1, 1986
Creator: Clinard, F.W. Jr.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Steady-state and transient radionuclide transport through penetrations in nuclear waste containers

Description: The transport of radionuclides through penetrations in wastes containers is analyzed. Penetrations may result from corrosion or cracks and may occur in the original container material, in degraded or corroded material, or in deposits of corrosion products. In this report we do not consider how these penetrations occur or the characteristics of expected penetrations in waste containers. We are concerned here only with the analytical formulation and solutions of equations to predict rates of mass… more
Date: July 1, 1986
Creator: Chambre, P. L.; Lee, W. W. L.; Kim, C. L. & Pigford, T. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Development of superconductors for applications in high-field, high-current-density magnets for fusion research

Description: The development of large-bore, high-field magnets for fusion energy applications requires a system approach to both magnet and conductor design. At Lawrence Livermore National Laboratory (LLNL), the criteria used to choose superconductors include: strain tolerance, radiation tolerance, heat removal, stability, fabricability, and cost. We report on the performance of industrially produced, prototype, Ti-modified Nb/sub 3/Sn wires developed with LLNL support. Wire performance characteristics eval… more
Date: September 26, 1986
Creator: Summers, L. T. & Miller, J. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Resonance ionization mass spectrometry at Los Alamos National Laboratory

Description: Two approaches to RIMS will be discussed here. The first is the use of continuous-wave (cw) dye lasers as the ionization source. Continuous excitation effectively matches the ionization to the evaporation of sample from a resistively heated filament, providing for efficient use of the sample. In addition, cw ionization permits pulse counting detection, necessary for the measurement of large isotope ratios on small samples. In the cases of lutetium and technetium discussed below, average ionizat… more
Date: January 1, 1986
Creator: Miller, C. M.; Nogar, N. S.; Apel, E. C. & Downey, S. W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Temperature control system for liquid-fed ceramic melters

Description: A temperature-feedback system has been developed for controlling electrical power to liquid-fed ceramic melters (LFCM). Software, written for a microcomputer-based data acquisition and process monitoring system, compares glass temperatures with a temperature setpoint and adjusts the electrical power accordingly. Included in the control algorithm are steps to reject failed thermocouples, spatially average the glass temperatures, smooth the averaged temperatures over time using a digital filter, … more
Date: October 1, 1986
Creator: Westsik, J. H. Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Numerical studies of gravity effects in two-phase reservoirs

Description: Numerical studies are performed to investigate the effects of localized feed zones on the pressure transients in two-phase reservoirs. It is shown that gravity effects can significantly affect the pressure transients, because of the large difference in the density of liquid water and vapor. Pressure transients for shallow and deep feed zones and the resulting fluid flow patterns are discussed.
Date: June 1, 1986
Creator: Bodvarsson, G.S. & Cox, B.L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Conventional magnet storage rings for x-ray lithography

Description: A first pass at the design of a conventional magnet storage ring for x-ray lithogrphy is presented. Electron beam size and power specifications are given, followed by a first pass at a lattice - a 4-fold symmetric, gradient FODO cell lattice using B = 1.6 Tesla C-magnets. (LEW)
Date: October 1, 1986
Creator: Bassetti, M.; Batchelor, K.; Galayda, J.; Halama, H.; Heese, R.; Hsieh, H. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Spectroscopic analysis of low Z impurities in the Tandem Mirror Experiment-upgrade

Description: Two absolutely calibrated EUV instruments have been used to study the impurity characteristics in the Tandem Mirror Experiment-Upgrade (TMX-U). One instrument is a normal incidence spectrograph that measures the time histories of several impurity emission lines (300 to 1800 A) in a single shot; radial scans can be obtained on a shot-by-shot basis. The other instrument is a monochromator that measures time-resolved radial profiles of a given impurity emission line in a single shot. The common in… more
Date: September 1, 1986
Creator: Yu, T.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Low cost hydrogen/novel membrane technology for hydrogen separation from synthesis gas, Phase 1. [Polyetherimide, cellulose acetate and ethylcellulose]

Description: The goal of this program is to develop polymer membranes useful in the preparation of hydrogen from coal-derived synthesis gas. During this quarter the first experiment were aimed at developing high performance composite membranes for the separation of hydrogen from nitrogen and carbon monoxide. Three polymers have been selected as materials for these membranes: polyetherimide cellulose acetate and ethylcellulose. This quarter the investigators worked on polyetherimide and cellulose acetate mem… more
Date: January 1, 1986
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Atlas of atomic spectral lines of plutonium emitted by an inductively coupled plasma

Description: Optical emission spectra from high-purity Pu-242 were generated with a glovebox-enclosed inductively coupled plasma (ICP) source. Spectra covering the 2280 to 7008 Angstrom wavelength range are presented along with general commentary on ICP-Pu spectroscopy.
Date: September 1, 1986
Creator: Edelson, M. C.; DeKalb, E. L.; Winge, R. K. & Fassel, V. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Analytical model for the dynamic resistivity of electrically-exploded conductors

Description: A detailed model for the dynamic resistivity of an exploding conductor presents many difficulties. An electrically-exploded conductor undergoes significant hydrodynamic expansion as it is heated. Resistivity is a function of both the temperature and density of a conductor and realistic models for resistivity over the range of parameter space experienced by an exploding conductor are quite complex. See for example, the model of Lee and More (1984). Calculation of the hydrodynamic expansion of th… more
Date: October 10, 1986
Creator: Lee, R. S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Fermilab Tevatron and Pbar source status report

Description: The antiproton production cycle is enumerated, and the commissioning of the antiproton source is described, giving milestones and major obstacles. The Tevatron collider operation is described, including procedure to load the Tevatron with three bunches of protons and three bunches of antiprotons. Commissioning of the Main Ring and Tevatron for collider operation is described. Development and accelerator studies in four areas were necessary: main ring RF manipulations; controls and applications … more
Date: August 1, 1986
Creator: Edwards, H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Radiographic detection of 100 A thickness variations in 1-. mu. m-thick coatings applied to submillimeter-diameter laser fusion targets

Description: We have developed x-ray radiography to measure thickness variations of coatings on laser fusion targets. Our technique is based on measuring the variation in x-ray transmission through the targets. The simplest targets are hollow glass microshells or microballoons 100 to 500 ..mu..m in diameter, that have several layers of metals or plastics, 1 to 100 ..mu..m thick. Our goal is to examine these opaque coatings for thickness variations as small as 1% or 0.1%, depending on the type of defect. Usi… more
Date: January 1, 1986
Creator: Stupin, D.M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Experiments and prospects for induction linac drivers

Description: In the last three years, the US program in Heavy Ion Fusion has concentrated on understanding the induction linac approach to a power-plant driver. In this method it is important that the beam current be maximized throughout the accelerator. Consequently, it is crucial to understand the space-charge limit in the AG transport system in the linac and, also, to achieve current amplification during acceleration to keep pace with the kinematical increase of this limit with energy. Experimental resul… more
Date: May 1, 1986
Creator: D., Keefe
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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FY 1987 current fiscal year work plan

Description: This Current Year Work Plan presents a detailed description of the activities to be performed by the Joint Integration Office during FY87. It breaks down the activities into two major work areas: Program Management and Program Analysis. Program Management is performed by the JIO by providing technical planning and guidance for the development of advanced TRU waste management capabilities. This includes equipment/facility design, engineering, construction, and operations. These functions are int… more
Date: December 1, 1986
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Physicochemical basis of the Na-K-Ca geothermometer

Description: Regular changes in solution composition were observed experimentally during granite reaction with dilute NaCl (+CaCl/sub 2/) solutions; these changes closely follow the empirical Na-K-Ca geothermometer relationship. Initial minerals forming the granite (quartz, plagioclase, K-feldspar, and biotite) were etched by the reactions. Alteration phases formed include calcium-zeolite at <300/sup 0/C, feldspar overgrowths at >300/sup 0/C, and minor amounts of clay and calcsilicate at all temperatures. A… more
Date: August 1, 1986
Creator: Janecky, D. R.; Charles, R. W.; Bayhurst, Gregory K. & Benjamin, T. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Convective heat transport in geothermal systems

Description: Most geothermal systems under exploitation for direct use or electrical power production are of the hydrothermal type, where heat is transferred essentially by convection in the reservoir, conduction being secondary. In geothermal systems, buoyancy effects are generally important, but often the fluid and heat flow patterns are largely controlled by geologic features (e.g., faults, fractures, continuity of layers) and location of recharge and discharge zones. During exploitation, these flow patt… more
Date: August 1, 1986
Creator: Lippmann, M.J. & Bodvarsson, G.S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Evaluation of the geological relationships to gas hydrate formation and stability

Description: Although there are many publications pertaining to gas hydrates, their formation and stability in various geological conditions are poorly known. Therefore, for the same reasons and because of the very broad scope of our research, limited amount and extremely dispersed information, the study regions are very large. Moreover, almost without exception the geological environments controlling gas hydrates formation and stability of the studied regions are very complex. The regions studied (complete… more
Date: January 1, 1986
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Reconnaissance of intertidal and subtidal zones of Back Island, Behm Canal, Southeast Alaska

Description: A diver reconnaissance of the intertidal and subtidal zones of Back Island, Southeast Alaska, was performed May 20-22, 1986. The specific objectives were to catalog potentially vulnerable shellfish, other invertebrates, and plant resources, and to identify potential herring spawning sites. This effort was designed to supplement the existing ecological data base for Back Island that would be used during the National Environmental Policy Act (NEPA) documentation process. A NEPA document will be p… more
Date: September 1, 1986
Creator: Strand, J. A. & Young, J. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Low temperature, sulfur tolerant homogeneous catalysts for the water-gas shift reaction

Description: The purpose of this report is to update and reorganize our recent review on homogeneous catalysis of the water-gas shift reaction (WGSR) based on recent literature publications and patents. This updated version will serve as a means of selecting 10 candidate catalyst systems for use in developing effective, sulfur-tolerant, low temperature WGSR catalysts. This report discusses the variations possible in the basic chemistry associated with WGSR catalytic cycles, including basic, acidic, and neut… more
Date: January 20, 1986
Creator: Laine, R. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Neutron star formation in theoretical supernovae. Low mass stars and white dwarfs

Description: The presupernova evolution of stars that form semi-degenerate or strongly degenerate O + Ne + Mg cores is discussed. For the 10 to 13 Msub solar stars, behavior of off-center neon flashes is crucial. The 8 to 10 m/sub solar stars do not ignite neon and eventually collapse due to electron captures. Properties of supernova explosions and neutron stars expected from these low mass progenitors are compared with the Crab nebula. The conditions for which neutron stars form from accretion-induced coll… more
Date: January 1, 1986
Creator: Nomoto, K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Numerical models for the evaluation of geothermal systems

Description: We have carried out detailed simulations of various fields in the USA (Bada, New Mexico; Heber, California); Mexico (Cerro Prieto); Iceland (Krafla); and Kenya (Olkaria). These simulation studies have illustrated the usefulness of numerical models for the overall evaluation of geothermal systems. The methodology for modeling the behavior of geothermal systems, different approaches to geothermal reservoir modeling and how they can be applied in comprehensive evaluation work are discussed.
Date: August 1, 1986
Creator: Bodvarsson, G.S.; Pruess, K. & Lippmann, M.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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