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  • 1
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    A theoretical model of current collection (1990)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Numerical simulations were carried out on the high-bias voltage on the conducting satellite for the current collection. Results show that the particle trajectories are dependent on the geomagnetic field orientation and the biased potential on both the satellite and the instrument's detector. It is noted that these particles will not escape from the plasma sheath when the B field is perpendicular to the satellite surface plane. It is also shown that part of the satellite surface will be shielded if the perpendicular magnetic field is greater than 0.35 gauss.
    Keywords: ELECTRONICS AND ELECTRICAL ENGINEERING
    Type: TABES PAPER 90-707
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 2
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    3-dimensional current collection model (1992)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: A three-dimensional, time dependent current collection model of a satellite has been developed for the TSS-1 system. The system has been simulated particularly for the Research of Plasma Electrodynamics (ROPE) experiment. The Maxwellian distributed particles with the geomagnetic field effects are applied in this numerical simulation. The preliminary results indicate that a ring current is observed surrounding the satellite in the equatorial plane. This ring current is found between the plasma sheath and the satellite surface and is oscillating with a time scale of approximately 1 microsec. This is equivalent to the electron plasma frequency. An hour glass shape of electron distribution was observed when the viewing direction is perpendicular to the equatorial plane. This result is consistent with previous findings from Linson (1969) and Antoniades et al. (1990). Electrons that are absorbed by the satellite are limited from the background ionosphere as indicated by Parker and Murphy (1967).
    Keywords: GEOPHYSICS
    Type: AIAA PAPER 92-2988
    Format: text
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    NASA TECHNICAL REPORTS
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