Collisionless dissipation in quasi-perpendicular shocks

Details Collisionless dissipation in quasi-perpendicular shocks Collisionless dissipation in quasi-perpendicular shocks

Apr 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984jgr....89.2142f&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 89, April 1, 1984, p. 2142-2150. Research supported by the U.S. Departmen

Physics

94

Collisionless Plasmas, Energy Dissipation, Shock Waves, Space Plasmas, Bow Waves, Electron Energy, Field Aligned Currents, Ion Temperature, Magnetic Fields, Self Consistent Fields, Simulation, Turbulence Effects

Scientific paper

Microscopic dissipation processes in quasi-perpendicular shocks are studied by two-dimensional plasma simulations in which electrons and ions are treated as particles moving in self-consistent electric and magnetic fields. Cross-field currents induce substantial turbulence at the shock front reducing the reflected ion fraction, increasing the bulk ion temperature behind the shock, doubling the average magnetic ramp thickness, and enhancing the upstream field aligned electron heat flow. The short scale length magnetic fluctuations observed in the bow shock are probably associated with this turbulence.

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