Chaos and ion heating in a slow shock

Details Chaos and ion heating in a slow shock Chaos and ion heating in a slow shock

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991georl..18.1615l&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 18, Aug. 1991, p. 1615-1618. Research supported by NASA.

Physics

18

Chaos, Particle Motion, Plasma Heating, Shock Heating, Coherent Radiation, Computerized Simulation, Electromagnetic Radiation, Mach Number, Magnetic Field Configurations, Wave Propagation

Scientific paper

An ion heating mechanism is proposed of slow shocks, which is associated with the chaotic motion of particles in the downstream wave field. For a coherent electromagnetic wave propagating along the downstream magnetic field, corresponding to switch-off shocks, the particle motions are not chaotic. For an oblique wave, the interaction between the particles and the wave field may lead to chaotic particle motions. Such particles may be greatly thermalized within one wavelength after they are incident into the downstream wave field. The results can be used to explain the existence of the critical intermediate Mach number observed in the hybrid simulations.

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