Stochastic particle acceleration by a pair of slow shocks

Nobue Shimada, Toshio Terasawa, J. R. Jokipii

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


We consider a stochastic acceleration mechanism of charged particles working at a pair of slow MHD shocks. The dominant acceleration occurs when a particle has a curvature drift at the shock front, which is parallel to the convection electric field. Since this acceleration mechanism works only on particles crossing the shock front, scattering agents in the upstream region are needed for the successive acceleration. The final energy spectrum, which is determined by the balance among the acceleration, deceleration, and escape processes, is softer than the power law. We suggest that this new acceleration mechanism in the reconnection region can provide the possibility to create high-energy particles in the magnetotail.

Original languageEnglish (US)
Article number97JA02032
Pages (from-to)22301-22310
Number of pages10
JournalJournal of Geophysical Research: Space Physics
Issue numberA10
StatePublished - 1997
Externally publishedYes

ASJC Scopus subject areas

  • Geophysics
  • Oceanography
  • Forestry
  • Aquatic Science
  • Ecology
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Space and Planetary Science
  • Earth and Planetary Sciences (miscellaneous)
  • Palaeontology


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