Stochastic instability of charged particles in a geomagnetic trap during magnetic storms

Details Stochastic instability of charged particles in a geomagnetic trap during magnetic storms Stochastic instability of charged particles in a geomagnetic trap during magnetic storms

Publishing date

May 1988

URL

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988kosis..26..420i&link_type=abstract

Journals

Kosmicheskie Issledovaniia (ISSN 0023-4206), vol. 26, May-June 1988, p. 420-429. In Russian.

Science

Physics

Additional info 3

Charged Particles, Geomagnetism, Magnetic Storms, Magnetically Trapped Particles, Magnetohydrodynamic Stability, Stochastic Processes, High Energy Interactions, Magnetic Disturbances, Particle Motion, Ring Currents

Type

Scientific paper

Abstract

The stochastic instability of charged particles (e.g., protons in the 1-100 MeV energy range) in the magnetosphere during the action of Dst variations is investigated. The mechanism of irreversible changes in fluxes of high-energy trapped particles after magnetic disturbances is assessed. During a magnetic storm a sharp intensification in the stochastization of charged-particle motion occurs; the region of instability increases and an additional mechanism for the transfer of particles from the region of stable motion to an unstable state arises. Theoretical results are confirmed by satellite observations. It is noted that the results obtained can clarify observed nonadiabatic effects in the radiation belts during geomagnetic disturbances.

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