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S-20 photocathode research activity. Part I

Description: The goal of this activity has been to develop and implement S-20 photocathode processing techniques at Lawrence Livermore National Laboratory (LLNL) in order to study the physical properties of the photocathode films. The present work is the initial phase of a planned activity in understanding cathode fabrication techniques and the optical/electrical characterization of these films.
Date: November 22, 1983
Creator: Gex, F.; Huen, T. & Kalibjian, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Enhanced oil recovery by CO/sub 2/ foam flooding. Annual report, October 1, 1982-September 30, 1983

Description: The objective is to identify commercially available additives which are effective in reducing the mobility of carbon dioxide, CO/sub 2/, thereby improving its efficiency in the recovery of tertiary oil, and which are low enough in cost to be economically attractive. During the past year significant progress has been made in developing a commercial method of reducing the mobility of carbon dioxide in enhanced oil recovery processes. Four basic chemical structures, listed below, appear to show mo… more
Date: December 22, 1983
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Fuel debris assessment for Three Mile Island Unit 2 (TMI-2) reactor recovery by gamma-ray and neutron dosimetry

Description: As a result of the accident on March 28, 1979, fuel debris was dispersed into the primary coolant system of the Three Mile Island Unit 2 (TMI-2) reactor. Location and quantification of fuel debris is essential for TMI-2 recovery. TMI-2 fuel debris assessments can be carried out nondestructively by neutron and gamma-ray dosimetry. Efforts to date have been directed toward fuel debris characterization of the makeup and purification demineralizers, will maintain reactor coolant water purity. Two h… more
Date: August 22, 1983
Creator: Gold, R.; Roberts, J. H.; McNeece, J. P.; Kaiser, B. J.; Ruddy, F. H.; Preston, C. C. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Hybrid space heating/cooling system with Trombe wall, underground venting, and assisted heat pump

Description: Our goal was to design and monitor a hybrid solar system/ground loop which automatically assists the standard, thermostatically controlled home heating/cooling system. The input from the homeowner was limited to normal thermostat operations. During the course of the project it was determined that to effectively gather data and control the various component interactions, a micro-computer based control system would also allow the HVAC system to be optimized by simple changes to software. This fle… more
Date: June 22, 1983
Creator: Shirley, J.W.; James, L.C.; Stevens, S.; Autry, A.N.; Nussbaum, M. & MacQueen, S.V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Kinetics and Mechanism of Catalytic Hydroprocessing of Components of Coal-Derived Liquids. Sixteenth Quarterly Report, February 16, 1983-May 15, 1983.

Description: A new method of structural analysis is applied to a group of hydroliquefied coal samples. The method uses elemental analysis and NMR data to estimate the concentrations of functional groups in the samples. The samples include oil and asphaltene fractions obtained in a series of hydroliquefaction experiments, and a set of 9 fractions separated from a coal-derived oil. The structural characterization of these samples demonstrates that estimates of functional group concentrations can be used to pr… more
Date: August 22, 1983
Creator: Gates, Bruce C.; Olson, Jon H.; Schuit, G. C. A.; Stiles, Alvin B. & Petrakis, Leon
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Magnetic switching, final chapter, Book I: the ATA upgrade prototype

Description: Efforts directed at finding a 10 kHz switch to replace the current 1 kHz gas blown spark gap have culminated in a prototype for an upgrade of ATA. The design and performance of this prototype as well as possible options and recommendations concerning an eventual upgrade are described. 4 references, 9 figures.
Date: March 22, 1983
Creator: Birx, D.; Cook, E.; Hawkins, S.; Poor, S.; Reginato, L.; Schmidt, J. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Mechanical construction of the 22 Nova laser

Description: The Nova laser system for Inertial Confinement Fusion studies at Lawrence Livermore National Laboratory is under construction and will be completed October 1984 with first operations scheduled for 1985. This system is the largest precision opto-mechanical engineering system ever built. Major engineering and subsystems are mechanical, optical, and electrical power. A series of system technologies include alignment, diagnostics, target, frequency conversion, and controls. This paper will only dis… more
Date: November 22, 1983
Creator: Hurley, C.A.; Frick, F.A.; Patton, H.G.; Bradley, G. & Martos, A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Observations of parametric instabilities in long-scalelength plasmas

Description: This paper is organized in the following manner. In the second section we discussed absorption; the dependence of scattered light signatures of parametric instabilities occurring at n/sub e/ less than or equal to n/sub c//4 on corona size is shown in section three; and evidence for suprathermal electron production in these long-scale length plasmas is presented in section four. The results and conclusions are finally summarized in section five.
Date: March 22, 1983
Creator: Campbell, E. M.; Max, C. E.; Phillion, D. W.; Turner, R. E.; Estabrooke, K.; Laskinski, B. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Small-scale hydroelectric power in Watauga County, North Carolina

Description: We have completed both the installation of the demonstration project and the assessment of the stream flows in Watauga County, North Carolina. The 17 kW, high head (178'), project on Laurel Creek in Watauga County has produced about 60,000 kWh over its first nine months of operation despite some electrical and other problems. It is currently producing 16 to 17 kW on a steady basis and is functioning as a popular site for visits by people who plan to install their own similar plants in area… more
Date: February 22, 1983
Creator: Ayers, H G
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Solar flares: an extremum of reconnection

Description: Three points are emphasized: that the solar flare is that particular astrophysical phenomenon that is the extremum of reconnection, no other phenomenon demands as rapid magnetic flux annihilation as is seen in the solar flare; that plasma physics experiments can and should be performed in the laboratory that model reconnection as we observe it in astrophysics; and that stochastic field lines derived from something similar to Alfven wave turbulence are a necessary part of reconnection.
Date: December 22, 1983
Creator: Colgate, S. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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TEBASCO user's guide

Description: TEBASCO is a Tandem mirror Equilibrium and BAllooning Stability COde. TEBASCO allows you to compute tandem-mirror MHD equilibria and to analyze both the flute-averaged and ballooning-mode stability of these equilibria. This stability analysis is directed toward the computation of marginal stability boundaries. Users of TEBASCO require a binary output file from the EFFI code which describes the vacuum magnetic field. In making this EFFI file the user will have defined a system of units for lengt… more
Date: September 22, 1983
Creator: Pearlstein, L. D.; Kaiser, T. B.; LoDestro, L.; Maron, N.; Nevins, W. M. & Willmann, P. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Time-resolved beam-profile measurements on the Experimental Test Accelerator (ETA)

Description: Examples are given of time-resolved beam profiles measured on ETA using several techniques. One method uses a Faraday cup that is remotely movable in two-transverse dimensions (x, y). In another method a small diameter wire or pellet target is moved across the beam and the bremsstrahlung x-ray intensity is plotted. Data for these methods are recorded using a Tektronix 7912 digitizer at 16 equally spaced times during 50 ns. Three other methods use a time gated (4 ns) microchannel plate televisio… more
Date: September 22, 1983
Creator: Chong, Y. P.; Lauer, E. J.; Clark, J. C.; Slaughter, D. R. & Fessenden, T. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Use of ORACLE in a scientific environment

Description: This paper discusses the use of ORACLE at the Fusion Experiments Analysis Facility (FEAF) for the laser program of the Lawrence Livermore National Laboratory. The mission of this VAX based computing facility is to aid laser program scientists and engineers develop their understanding of inertial confinement fusion target behavior. We have incorporated the ORACLE DBMS as a major part of an integrated data management and analysis environment for accomplishing this task. We discuss our use of ORAC… more
Date: June 22, 1983
Creator: Carey, R. W.; Auerbach, J. M.; Lerche, R. A. & Demartini, B. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Vectorizing and machine-spanning techniques

Description: Techniques for vectorizing complex logic are shown using a decoupled sliding-surface calculation that is part of a two-dimensional Lagrangian simulation model. The same source coding can be run on many vector, parallel, and multiprocessor computers with very little or no alteration. The vectorizing techniques have been used for a wide range of problems.
Date: September 22, 1983
Creator: Giroux, E D
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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