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  • 1
    Publication Date: 2005-11-27
    Description: Model for calculation of parameters for local thermodynamic equilibrium in uranium
    Keywords: THERMODYNAMICS AND COMBUSTION
    Type: FLORIDA UNIV. RES. ON URANIUM PLASMAS AND THEIR TECHNOL. APPL. 1971; P 173-178
    Format: text
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  • 2
    Publication Date: 2016-06-07
    Description: The initial phase of a broader, more complete program for the characterization of electrical breakdowns on spacecraft insulating materials is described which consisted of the development of a discharge simulator and characterization facility and the performance of a limited number of discharge measurements to verify the operation of the laboratory setup and to provide preliminary discharge transient field data. A preliminary model of the electromagnetic characteristics of the discharge was developed. It is based upon the "blow off" current model of discharges, with the underlying assumption of a propagating discharge. The laboratory test facility and discharge characterization instrumentation are discussed and the general results of the "quick look" tests are described on quartz solar reflectors aluminized Kapton and silver coated Teflon are described.
    Keywords: SPACECRAFT DESIGN, TESTING AND PERFORMANCE
    Type: NASA. Lewis Research Center Spacecraft Charging Technol., 1980; p 894-911
    Format: text
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  • 3
    Publication Date: 2019-06-28
    Description: A steady state model that describes the internal charge distribution of a planar dielectric sample exposed to a uniform electron beam was developed. The model includes the effects of charge deposition and ionization of the beam, separate trap-modulated mobilities for electrons and holes, electron-hole recombination, and pair production by drifting thermal electrons. If the incident beam current is greater than a certain critical value (which depends on sample thickness as well as other sample properties), the steady state solution is non-physical.
    Keywords: ATOMIC AND MOLECULAR PHYSICS
    Type: NASA. Lewis Research Center Spacecraft Environ. Interactions Technol., 1983; p 591-598
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  • 4
    Publication Date: 2019-06-27
    Description: General theory of infrared line emission from planetary nebula
    Keywords: SPACE RADIATION
    Type: NASA-CR-80124
    Format: application/pdf
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  • 5
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    In:  Other Sources
    Publication Date: 2019-06-28
    Description: Computer program integrates path of relativistic electron through region of nonuniform static electromagnetic fields with accuracy of 1 micrometer in 10 centimeters. Program can ue be used to evaluate and modify design of electron-imaging systems. Language is FORTRAN IV, for batch or interactive execution on PDP 10, 11, CYBER 70, 170, and CDC 6000.
    Keywords: PHYSICAL SCIENCES
    Type: GSC-12535 , NASA Tech Briefs (ISSN 0145-319X); 5; 1; P. 41
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  • 6
    Publication Date: 2019-06-27
    Description: Planetary nebulae IR emission intensities, discussing radiative recombination, ionization equilibrium and fine structure level population
    Keywords: SPACE SCIENCES
    Type: ASTROPHYSICAL JOURNAL
    Format: text
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