Ion acceleration at collisionless shock interactions

Details Ion acceleration at collisionless shock interactions Ion acceleration at collisionless shock interactions

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aipc..264..342c&link_type=abstract

In: Particle acceleration in cosmic plasmas; Proceedings of the Workshop, Bartol Research Inst., Newark, DE, Dec. 4-6, 1991 (A93

Physics

Energetic Particles, Ion Distribution, Particle Acceleration, Shock Wave Interaction, Solar Wind, Cosmic Plasma, Magnetohydrodynamic Turbulence, Solar Terrestrial Interactions

Scientific paper

When two collisionless shocks collide, a population of high energy ions is produced. Using hybrid numerical simulations, it is shown that when the two shocks are quasi-perpendicular, ions with energies up to 15 E0 (where E0 is the initial kinetic energy of upstream ions in the shock frame) are produced by direct electric field acceleration. In the quasi-parallel regime, energies as high as 80 E0 can be obtained. These ions are accelerated by both scattering off the approaching shocks and subsequently in the intense turbulence left behind by the shock collision.

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