Physics
Scientific paper
Feb 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jgr....98.1531u&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 98, no. A2, p. 1531-1544.
Physics
3
Earth Orbital Environments, Magnetohydrodynamic Flow, Space Plasmas, Tethered Satellites, Computerized Simulation, Plasma Currents, Plasma Density
Scientific paper
Two-dimensional electromagnetic particle computer experiments were conducted to study plasma responses to a high potential satellite in the electrodynamic tether system. The satellite potential is fixed to be higher than the space potential of the surrounding plasma. The transient process of the plasma response to the satellite and the spatial profiles of plasma density and of plasma current are examined. In the direction perpendicular to B sub 0, the density profile of the plasma flow shows asymmetric distortion caused by the deceleration of the ambient plasma owing to the intense E x B effect. An intense transient current is observed followed by an exponentially decreasing current. The current flows both along and across B sub 0. The average current obtained by the computer experiments is between that predicted by the Langmuir theory and that predicted by the single particle theory.
Matsumoto Hiroshi
Omura Yoshiharu
Usui Hideyuki
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