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Instrumentation for measuring soft x-rays from laser produced plasmas

Description: Instrumentation has been developed at the Lawrence Livermore Laboratory for measuring subkilovolt x-rays from laser-produced plasmas. This information is needed to do a complete energy balance on laser fusion experiments. The instruments must have thin windows and yet discriminate against the severe environment of other intense target emissions such as ions, electrons, and scattered laser light. Low energy x-ray measurements down to 0.1 keV will be presented using these absolutely calibrated de… more
Date: September 24, 1976
Creator: Slivinsky, V. W.; Ahlstrom, H. G.; Kornblum, H. N.; Koppel, L. N. & Leipelt, G. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Effects of density gradient modification on fluid instability in thermonuclear micro-implosions

Description: The presence of hydrodynamic fluid instability at the ablation surface puts constraints on the kinds of targets, surface finish, and energy sources that one can use for thermonuclear micro-implosions. If Taylor-like modes grow at near the classical value, one is limited to low aspect ratio shells and surface finishes of 10-100 A. These surface finish requirements can be reduced by 1 to 2 orders of magnitude by exploiting density gradient modification techniques to obtain a shallow density gradi… more
Date: September 24, 1976
Creator: Lindl, J. D.; Bangerter, R. O.; Nuckolls, J. H.; Mead, W. C. & Thomson, J. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Measurement of the K/sup -/p. -->. anti K/sup 0/n total cross section below 1 GeV/c. [500-1050 MeV/c]

Description: The total cross section for the reaction K/sup -/p ..-->.. anti K/sup 0/n was measured between 500 and 1050 MeV/c in steps of 10 MeV/c. The experiment was performed at the Brookhaven AGS using a negative kaon beam focused onto a 41 cm long liquid hydrogen target. The target was surrounded by a box of scintillation counters which detected and vetoed all charged final states. The charged particle veto box was in turn surrounded by a box of lead-scintillator sandwich shower counters. These counter… more
Date: September 24, 1976
Creator: Pollard, D. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Surface characterization of ceramic materials. [LEED, AES, XPS, ion scattering spectroscopy, secondary ion mass spectroscopy]

Description: In recent years several techniques have become available to characterize the structure and chemical composition of surfaces of ceramic materials. These techniques utilize electron scattering and scattering of ions from surfaces. Low-energy electron diffraction is used to determine the surface structure, Auger electron spectroscopy and other techniques of electron spectroscopy (ultraviolet and photoelectron spectroscopies) are employed to determine the composition of the surface. In addition the… more
Date: September 24, 1976
Creator: Somorjai, G. A. & Salmeron, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Heat Exchanger-Ingot Casting/Slicing Process. Silicon sheet growth development for the large area silicon sheet task of the Low Cost Silicon Solar Array Project. Fourth quarterly progress report, June 19, 1976--September 24, 1976

Description: Good seeding and growth were achieved during the past quarter with the Heat Exchanger Method at melt superheats below 10/sup 0/C. To achieve a high enough seeding temperature at low superheat, the heat exchanger was raised one inch higher in the heat zone. For this higher position, seeding conditions had to be re-established since the temperature profile across the diameter of the heat zone was flatter; i.e., the temperature in the middle of the heat zone was closer to the temperature near the … more
Date: September 24, 1976
Creator: Schmid, F. & Reynolds, B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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E Division activities report, FY 1976

Description: Some of the activities in E (Experimental Physics) Division are described. E Division carries out basic and applied research in atomic and nuclear physics as well as in material and biomedical sciences, centered around the Laboratory's four major accelerators. Experiments are grouped under the headings of neutron, photon, and charged-particle interactions. Investigations in this past year involved fission cross sections, nuclear reactions with neutrons, charged particles and gamma rays, in… more
Date: September 24, 1976
Creator: Barschall, H. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

[Memorandum from Nove University, Dr. Martin I. Veiner, to Lyle Hoffe]

Description: Memorandum from Nove University, Dr. Martin I. Veiner from the Graduate Management Program to Lyle Hoffe of the New York Institute of Technology Registrar. The memo is in regards of a student John Thomas and how they have completed all the requirements for graduation.
Date: September 24, 1976
Creator: Veiner, Dr. Martin I.
Item Type: Refine your search to only Text
Partner: UNT Libraries Special Collections
open access

Laboratory investigation of an advanced geothermal primary heat exchanger (APEX). Final report 2146:08, 30 June 1975 to 31 August 1976

Description: The research program conducted to investigate the feasibility of using a recirculating bed material, fluidized by geothermal brine, to reduce or eliminate fouling in an Advanced Geothermal Primary Heat Exchanger (APEX) is described. The research effort combined theoretical analyses and laboratory experimentation to evaluate and characterize the concept. Technical feasibility was established by testing the effectiveness of the bed material in preventing the fouling of a heat exchanger tube in wh… more
Date: September 24, 1976
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Particle and x-ray energy measurements in laser-plasma interaction experiments

Description: The energy carried by particles and low energy x-rays resulting from irradiation of targets with .5 to 1 TW, 1.06 ..mu..m lasers has been measured. The energy distributions were obtained from measurements at discrete locations using calorimeters and work is in progress to obtain them over a hemisphere with a thermal imaging system. Azimuthal symmetry and polar distributions for different focusing schemes have been determined. The data have been integrated to obtain the absorbed energy and these… more
Date: September 24, 1976
Creator: Rupert, V. C.; Gunn, S. R.; Holzrichter, J. F.; Glaros, S. S.; Severyn, J. R. & Lee, P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Field-reversed mirror as a D-T power reactor

Description: The Field-Reversed-Mirror is a plasma confinement scheme which uses the diamagnetic current of the D-T fuel plasma to convert the open field pattern of a conventional mirror machine into a closed-field pattern with plasma confinement properties which are expected to be considerably improved. If realized, this improvement in confinement will considerably improve the energy gain of the mirror reactor, and result in a reduction in the cost of producing energy. The Field Reversed Mirror device is d… more
Date: September 24, 1976
Creator: Condit, W. C.; Carlson, G. A.; Devoto, R. S.; Doggett, J. & Neef, W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

HTGR Fuels and Core Development Program. Quarterly progress report for the period ending August 31, 1976. [Graphite and fuel irradiation; fission product release]

Description: The work reported includes studies of reactions between core materials and coolant impurities, basic fission product transport mechanisms, core graphite development and testing, the development and testing of recyclable fuel systems, and physics and fuel management studies. Materials studies include irradiation capsule tests of both fuel and graphite. Experimental procedures and results are discussed and, where appropriate, the data are presented in tables, graphs, and photographs.
Date: September 24, 1976
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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