Unlimited Relativistic Shock Surfing Acceleration

Details Unlimited Relativistic Shock Surfing Acceleration Unlimited Relativistic Shock Surfing Acceleration

Aug 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001phrvl..87g5001u&link_type=abstract

Physical Review Letters, vol. 87, Issue 7, id. 075001

Physics

20

Scientific paper

Nonrelativistic shock surfing acceleration at quasiperpendicular shocks is usually considered to be a preacceleration mechanism for slow pickup ions to initiate diffusive shock acceleration. In shock surfing, the particle accelerates along the shock front under the action of the convective electric field of the plasma flow. However, the particle also gains kinetic energy normal to the shock and eventually escapes downstream. We consider the case when ions are accelerated to relativistic velocities. In this case, the ions are likely to be trapped for infinitely long times, because the energy of bounce oscillations tends to decrease during acceleration. This suggests the possibility of unlimited acceleration by shock surfing.

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