Acceleration theory for 5–40 keV ions at interplanetary shocks |
| |
Authors: | M.A. Forman |
| |
Affiliation: | Department of Earth and Space Sciences, State University of New York at Stony Brook, Stony Brook, NY 11794, USA |
| |
Abstract: | Power-law spectra f(E)∝E?2.7 of < 40 keV suprathermal ions within ~107 km of propagating interplanetary shocks are explained by diffusive scattering near a plane shock. The theory fits the 25 November 1977 event with a mean free path perpendicular to the shock with is 0.01 AU in front of the shock and less than .0003 AU behind it, for 1 keV ions. The theory predicts a steepening spectrum at higher energies, of the form depends on the plasma velocity jump ΔV and the plasma speed VW and mean free path λ in front of the shock |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|