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  • ATOMIC AND MOLECULAR PHYSICS  (1)
  • ELECTRONICS AND ELECTRICAL ENGINEERING
  • 1975-1979  (2)
  • 1920-1924
  • 1
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    Phenomenological treatments of cross-sections for proton and hydrogen impact below 1 keV on molecular nitrogen (1975)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: An analytic independent-particle model is used to construct static potentials to describe the interaction of hydrogen-like ions with atoms and molecules. Parameters of the ion-atom potential are determined from ab initio total energy minimization procedure. The elastic scattering of He(+) from Ne and Ar is investigated as a test case and comparison is made with experiment. The model is then used in conjunction with low energy H(+)-N2 experimental data to construct differential and total cross-sections for the scattering of protons and hydrogen in the energy range of 10 eV to 1 keV from molecular nitrogen. Analytic forms are used to parametrize these cross-sections to facilitate their use in the calculation of energy deposition by protons and hydrogen atoms in atmospheric gases.
    Keywords: ATOMIC AND MOLECULAR PHYSICS
    Type: Journal of Chemical Physics; 62; June 15
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Electrostatic forces for personnel restraints (1977)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The feasibility of utilizing electrostatic forces for personnel retention devices on exterior spacecraft surfaces was analyzed. The investigation covered: (1) determination of the state of the art; (2) analysis of potential adhesion surfaces; (3) safety considerations for personnel; (4) electromagnetic force field determination and its effect on spacecraft instrumentation; and (5) proposed advances to current technology based on documentation review, analyses, and experimental test data.
    Keywords: ELECTRONICS AND ELECTRICAL ENGINEERING
    Type: NASA-CR-151473 , MA-183TF
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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