Multiple electron species dynamics parallel to a high-latitude field line

Details Multiple electron species dynamics parallel to a high-latitude field line Multiple electron species dynamics parallel to a high-latitude field line

Oct 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990georl..17.1873m&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 17, Oct. 1990, p. 1873-1876. Research supported by the U.S. Navy and NASA.

Physics

9

Lines Of Force, Magnetic Field Reconnection, Magnetosphere-Ionosphere Coupling, Plasma Dynamics, Space Plasmas, Computerized Simulation, Electric Fields

Scientific paper

The parallel dynamics of the plasma along high-latitude field lines is a critical feature of the ionosphere-magnetosphere coupling problem. Results are reported from a time-dependent large-scale simulation of these dynamics in a region from the ionosphere well into the magnetosphere. Including multiple electron species has made it possible to dynamically simulate the diodelike response of the field-line plasma to the parallel currents coupling the ionosphere and magnetosphere. Downward (return) currents flow with small resistance, while upward currents produce kilovolt-sized potential drops along the field due to the effect of the converging magnetic field on the high-energy magnetospheric electrons.

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