Simulation of ion heating in the topside auroral ionosphere

Details Simulation of ion heating in the topside auroral ionosphere Simulation of ion heating in the topside auroral ionosphere

Dec 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988georl..15.1534c&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 15, Dec. 1988, p. 1534-1537. Research supported by the Lockheed Independent

Physics

7

Auroral Zones, Ionospheric Heating, Charge Transfer, Electric Potential, Magnetosphere-Ionosphere Coupling, Monte Carlo Method, Simulation, Space Plasmas, Thermosphere

Scientific paper

Monte Carlo simulations of wave-particle heating under realistic topside conditions are conducted to determine the efficiencies of the topside auroral ionosphere as a source of magnetospheric plasma. It is shown that the source efficiency is affected by copious charge exchange interactions between the ions and thermospheric neutrals at an early stage of heating. The source is also affected by the existence of downward parallel electric potential drops. It is predicted that the composition of warm ions escaping the topside is drastically different from the cold ionospheric composition. It is also suggested that a hot population of thermospheric neutrals exists in the high latitude topside ionosphere.

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