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Monochromatic Cosmic Ray Deuterion Source

Description: The reaction pp {yields} {pi}{sup +}d resulting from the high energy cosmic rays incident on the interstellar hydrogen gas gives rise to secondary deuterons. Since the total cross section for this reaction is appreciable only at proton kinetic energies of 600 MeV, the deuterons have a very small spread in energy. It is estimated that the flux of deuterons from this mechanism should be easily discernible from deuterons produced by other reactions and copious enough to be detected at the earth. T… more
Date: August 6, 1968
Creator: Anderson, Jared A.
Partner: UNT Libraries Government Documents Department
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Direct Conversion of Neutron Energy and Other Advantages of a Large Yield Per Pulse, Inertial-Confinement Fusion Reactor

Description: Aspects of an inertial-confinement, fusion reactor that uses an energy release {approx gt}10{sup 11} joules are discussed. The large energy release makes possible direct conversion of the fusion neutrons' energy after nuclear heating of an evaporated blanket to the plasma state. Surface damage by charged particles is avoided and structural damage by neutrons is alleviated. Complex fuel assemblies and other expandable parts may be used as a result of the high monetary value of the energy release. more
Date: May 6, 1974
Creator: Burke, R. J. & Cutting, J. C.
Partner: UNT Libraries Government Documents Department
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Active readout KAP x-ray spectrometer. [Laser-produced plasma diagnostics]

Description: It was found that a new type of solid-state detector known as the self-scanning photodiode array can be used to obtain the active readout of data in wavelength-dispersive x-ray spectrometers. The use of this device to recover x-ray spectral data for glass microspheres heated by Lawrence Livermore Laboratory's CYCLOPS laser is reported. The self-scanning photodiode array is a product of the MOS electronics fabrication technology. It consists of an array of semi-discrete diffused junction photodi… more
Date: October 6, 1975
Creator: Koppel, L. N.; Richards, L. M. & Campbell, D. E.
Partner: UNT Libraries Government Documents Department
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Spectral measurements of x-rays and electrons emitted from 1. 06. mu. m laser produced plasmas

Description: Absolute spectral measurements were made of electrons escaping from plasmas produced by focusing 5-10 J, 50-100 picosecond, 1.06 ..mu..m laser pulses on 10 ..mu..m thick Parylene disk targets. Nine spectral bands with 3 to 7.5 keV resolution were obtained from 30 to 190 keV using a 90/sup 0/ focusing permanent magnet spectrometer and appropriately positioned silicon electron detectors.
Date: October 6, 1975
Creator: Tirsell, K. G.; Kornblum, H. N.; Catron, H. C. & Slivinsky, V. W.
Partner: UNT Libraries Government Documents Department
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X-ray line spectra from DT filled SiO/sub 2/ microshells

Description: This paper is a discussion of curved crystal x-ray spectrometry of laser induced plasmas for h..nu.. < 4 keV. The plasmas were produced by a short pulse (<200 ps) of 1.06 ..mu.. (neodymium glass) radiation on glass shells on the order of a hundred ..mu..m in diameter and a micron thick. Total absorbed laser energy is of the order of 10 joules and x-radiation .01-.1 joule/sr. The shells were filled with DT gas under compression.
Date: October 6, 1975
Creator: Richards, L. & Eckels, D.
Partner: UNT Libraries Government Documents Department
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High-intensity, subkilovolt x-ray calibration facility. [Cockroft--Walton accelerator facility]

Description: A high-intensity subkilovolt x-ray calibration source utilizing proton-induced inner-shell atomic fluorescence of low-Z elements is described. The high photon yields and low bremsstrahlung background associated with this phenomenon are ideally suited to provide intense, nearly monoenergetic x-ray beams. The proton accelerator is a 3 mA, 300 kV Cockroft-Walton using a conventional rf hydrogen ion source. Seven remotely-selectable targets capable of heat dissipation of 5 kW/cm/sup 2/ are used to … more
Date: May 6, 1976
Creator: Kuckuck, R. W.; Gaines, J. L. & Ernst, R. D.
Partner: UNT Libraries Government Documents Department
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Method for determining branching ratios and cross sections of optical transitions in an atomic beam

Description: A general method for determining the branching ratio for an optical transition in neutral atom atomic beams is described. By utilizing the value of the branching ratio obtained, and the lifetime of the upper level, high precision absolute cross sections can be determined.
Date: July 6, 1976
Creator: Carlson, L. R.; Worden, E. F. & Johnson, S. A.
Partner: UNT Libraries Government Documents Department
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2XIIB plasma confinement experiments

Description: This paper reports results of 2XIIB neutral-beam injection experiments with plasma-stream stabilization. The plasma stream is provided either by a pulsed plasma generator located on the field lines outside the plasma region or by ionization of neutral gas introduced at the mirror throat. In the latter case, the gas is ionized by the normal particle flux through the magnetic mirror. A method of plasma startup and sustenance in a steady-state magnetic field is reported in which the plasma stream … more
Date: August 6, 1976
Creator: Coensgen, F. H.; Clauser, J. F. & Correll, D. L.
Partner: UNT Libraries Government Documents Department
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Simultaneous reactions at disk and porous electrodes

Description: Advances in electrochemical engineering are reviewed and the methodology of analysis of electrochemical systems outlined. Examples illustrative of current research concern simultaneous reactions for flow-through porous electrodes and the more fundamental system of a rotating-disk electrode. Here the undesirable side reaction is the formation of dissolved hydrogen, and the main reaction is the deposition of copper from sulfuric acid solutions. Distributions of reaction rate, concentration, and p… more
Date: September 6, 1976
Creator: Newman, J.
Partner: UNT Libraries Government Documents Department
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Review of radiative transitions and decays of psi and psi'

Description: Theoretical ideas about the new particle spectrum and dynamics are compared with the experimental data for the radiative transitions and decays of psi' and psi.
Date: October 6, 1976
Creator: Chanowitz, M. S.
Partner: UNT Libraries Government Documents Department
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High-temperature borate liquids: physical properties of glass-forming compositions

Description: Several experimental routes can be used to develop a better understanding of the polymeric constitution (polyanionic and/or polyhedral distribution) of borate, germanate, and silicate glasses. Spectral, chemical, physical-chemical, and mechanical property information can be determined directly for the glass compositions of interest. Generally, only physical-chemical information is readily accessible for the corresponding high temperature liquids. It will be shown that information on each state … more
Date: May 6, 1977
Creator: Riebling, E.F.
Partner: UNT Libraries Government Documents Department
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Determination of sound velocity in liquid metals at temperatures above 4000 K

Description: Present techniques for measuring sound velocity in liquid metals have been limited by transducers that cannot survive in extreme temperatures for the long periods these techniques require. We are developing an alternative, noncontacting technique that takes very little time (approximately 1 ..mu..s) and can be used at very high temperatures (above 6000 K). We hope to use this method with our isobaric-expansion apparatus, in which we measure the thermal expansion, enthalpy, and temperature of wi… more
Date: June 6, 1977
Creator: Gathers, G. R.; Shaner, J. W.; Calder, C. A. & Wilcox, W. W.
Partner: UNT Libraries Government Documents Department
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Mechanical structure of the Mirror Hybrid Reactor Power Plant

Description: The mechanical structure of the LLL/GA Mirror Hybrid Reactor vessel is briefly discussed. Functional requirements and over-all design considerations leading to selection of a post-tensioned concrete reactor vessel and a modular blanket approach are indicated. Module design life of four years, module replacement, capability and remote fueling are provided by the chosen structural design. (RME)
Date: June 6, 1977
Creator: Culver, D.W. & Neef, W.S.
Partner: UNT Libraries Government Documents Department
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Shock compression of pyrolytic, ceylon natural, and a hot-pressed synthetic graphite to 120 GPa

Description: Recent improvements have made the two-stage, light-gas gun at Lawrence Livermore Laboratory into a dependable source of very energetic planar shocks. Also, the inclined-prism technique has proved useful in observing anomalous behavior of materials, especially at low pressure. The availability of these improved techniques presented an opportunity to re-examine the low pressure, shock-compression characteristics for graphite and, in a search for an additional transformation, to extend some of the… more
Date: June 6, 1977
Creator: Gust, W. H. & Young, D. A.
Partner: UNT Libraries Government Documents Department
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Design of the calorimeter and beam dump for the TFTR prototype neutral beam injector

Description: A calorimeter has been designed for use with the TFTR prototype neutral beam injection system. It consists of three vees each having two 18.8-mm-thick (0.75 in.) copper plates at a 6-deg angle, relative to the beam centerline. The maximum power density on a plate with this arrangement will be 2.0 kW/cm/sup 2/, resulting in a front surface temperature rise of about 420/sup 0/C. A support and retraction system moves the calorimeter in and out of the beam centerline. Various factors used in the se… more
Date: October 6, 1977
Creator: Stone, R.R. & Haughian, J.M.
Partner: UNT Libraries Government Documents Department
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Fueling with neutral beams

Description: Neutral beams, which effectively heat and fuel mirror reactors, provide high-energy particles that readily cross magnetic fields to penetrate, heat, and fuel confined plasmas. The potential reliability, efficiency, and cost of large neutral-beam injectors make them desirable components of an operating mirror reactor. Because neutral beams are a poor source of low-energy particles, some other means of fueling large Tokamaks is needed.
Date: October 6, 1977
Creator: Fink, J.H.
Partner: UNT Libraries Government Documents Department
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LASNEX code for inertial confinement fusion

Description: A brief description is presented of the physical processes, models and numerical methods employed in the LASNEX code for calculating inertial confinement fusion.
Date: October 6, 1977
Creator: Zimmerman, G.; Kershaw, D.; Bailey, D. & Harte, J.
Partner: UNT Libraries Government Documents Department
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Mechanical design criteria for continuously operating neutral beams

Description: Mechanical design criteria for high-energy neutral beam injectors capable of prolonged operation are examined. The generalized structural, heat transfer, and hydraulics equations are presented for convectively cooled grids. The effectiveness of helium, liquid sodium, and subcooled water for cooling a 2-mm-diameter, 8-m-long grid tube is shown. Cooling effectiveness is determined as a function of the number of tubes in series vs heat flux, where the number of tubes in series ranges from 1 to 100… more
Date: October 6, 1977
Creator: Vosen, S. R.; Bender, D. J.; Fink, J. H. & Lee, J. D.
Partner: UNT Libraries Government Documents Department
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Damage history of Argus, a 4TW Nd-glass system

Description: Argus is a twin beam, 20 cm output aperture, Nd:glass laser system that has delivered 4TW to a laser fusion target. This performance is based on the concepts that multiple spatial filtering can prevent beam fill factors. Damage to optics due to self focusing and filamentation does not occur on Argus. The only form of damage is induced by broadband radiation from xenon flashlamps interacting with contaminants on or in the Nd:glass. The severity of damage is measured by the fraction of the beam o… more
Date: December 6, 1977
Creator: Stowers, I.F. & Patton, H.G.
Partner: UNT Libraries Government Documents Department
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Positive ion systems: state of the art and ultimate potential

Description: The PLT or ISX-B ion source has been operated at 40-keV, 60-A, and 0.3-sec pulses with H(D) neutral injected power of 750 kW (approximately 1000 kW) on the PLT device. This report gives a brief description of this system and some future plans. (MOW)
Date: December 6, 1977
Creator: Haselton, H.H.
Partner: UNT Libraries Government Documents Department
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Waste management strategy for nuclear fusion power systems from a regulatory perspective

Description: A waste management strategy for future nuclear fusion power systems is developed using existing regulatory methodology. The first step is the development of a reference fuel cycle. Next, the waste streams from such a facility are identified. Then a waste management system is defined to safely handle and dispose of these wastes. The future regulator must identify the decisions necessary to establish waste management performance criteria. The data base and methodologies necessary to make these de… more
Date: December 6, 1977
Creator: Heckman, R.A.
Partner: UNT Libraries Government Documents Department
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Noncontact material testing using laser energy deposition and interferometry

Description: A technique is described for the noncontact testing of materials using laser deposition to generate a stress pulse and interferometry to record the transient surface displacement. The dilatational wave speed can be measured and, in the particular case of rod or plate specimens, sufficient information can be obtained to evaluate the two elastic constants of an isotropic material. Several applications illustrating the advantages of the approach are summarized.
Date: February 6, 1978
Creator: Calder, C.A. & Wilcox, W.W.
Partner: UNT Libraries Government Documents Department
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