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  • 1
    Publication Date: 2011-08-16
    Description: An integral balance technique for calculation of the electron energy distribution in a radiation-induced plasma is described. Results predict W-values reasonably well and compare favorably with more complicated Monte-Carlo calculations. The distribution found differs from that in a normal electrical discharge and is of interest in radiation-pumped laser research.
    Keywords: PLASMA PHYSICS
    Type: IEEE Transactions on Plasma Science; PS-2; Dec. 197
    Format: text
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  • 2
    Publication Date: 2019-06-27
    Description: An approximate analytic model, based on continuous electron slowing, has been used for survey calculations. Where more accuracy is required, a Monte Carlo technique is used which combines an analytic representation of Coulombic collisions with a random walk treatment of inelastic collisions. The calculated electron distributions have been incorporated into another code that evaluates both the excited atomic state densities within the plasma and the radiative flux emitted from the plasma.
    Keywords: PLASMA PHYSICS
    Type: Princeton Univ. Partially Ionized Plasmas, Including the 3rd Symp. on Uranium Plasmas; p 64-72
    Format: text
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  • 3
    Publication Date: 2019-06-27
    Description: The performance of NASA Lewis fusion experiments (SUMMA and Bumpy Torus) is compared with other experiments and that necessary for a power reactor. Key parameters cited are gain (fusion power/input power) and the time average fusion power, both of which may be more significant for real fusion reactors than the commonly used Lawson parameter. The NASA devices are over 10 orders of magnitude below the required powerplant values in both gain and time average power. The best experiments elsewhere are also as much as 4 to 5 orders of magnitude low. However, the NASA experiments compare favorably with other alternate approaches that have received less funding than the mainline experiments. The steady-state character and efficiency of plasma heating are strong advantages of the NASA approach. The problem, though, is to move ahead to experiments of sufficient size to advance in gain and average power parameters.
    Keywords: PLASMA PHYSICS
    Type: NASA-CR-3043
    Format: application/pdf
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  • 4
    Publication Date: 2019-07-13
    Description: A gas handling system capable of use with uranium fluoride was designed and constructed for use with nuclear pumped laser experiments using the TRIGA research reactor. By employing careful design and temperature controls, the UF6 can be first transported into the irradiation chamber, and then, at the conclusion of the experiment, returned to gas cylinders. The design of the system is described. Operating procedures for the UF6 and gas handling systems are included.
    Keywords: PLASMA PHYSICS
    Type: NASA-CR-169019 , NAS 1.26:169019
    Format: application/pdf
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