Losses of ring current ions by strong pitch angle scattering

Details Losses of ring current ions by strong pitch angle scattering Losses of ring current ions by strong pitch angle scattering

Oct 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001georl..28.3839w&link_type=abstract

Geophysical Research Letters, Volume 28, Issue 20, p. 3839-3842

Physics

12

Magnetospheric Physics: Energetic Particles, Precipitating, Trapped, Magnetospheric Physics: Ring Current, Magnetospheric Physics: Storms And Substorms

Scientific paper

High angular resolution measurements of 155 keV ions in the ring current during the magnetic storm of August 6, 1998 show filled loss cones indicating that very rapid pitch angle scattering is taking place above the satellite location. The measurements were made with the SEPS detector on the Polar satellite during its passages through the ring current regions, usually at magnetic latitudes near +/-45° and at magnetic local times of about 04:00 and 16:00 hrs. The observed strong pitch angle scattering implies a trapping lifetime of less than an hour and may explain the early rapid recovery of Dst during magnetic storms.

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