Physics
Scientific paper
Dec 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufmsa41b..05h&link_type=abstract
American Geophysical Union, Fall Meeting 2004, abstract #SA41B-05
Physics
7867 Wave/Particle Interactions, 2716 Energetic Particles, Precipitating, 2720 Energetic Particles, Trapped, 2753 Numerical Modeling, 2768 Plasmasphere
Scientific paper
Stochastic acceleration and loss of MeV electrons during October-November storms 2003 is required to explain the rapid loss and the formation of a new radiation belt in the "slot " region, near L=3. The compression of plasmasphere during the main phase of the storm down to L=2.2 creates preferential conditions for local acceleration. Filling of the slot region of the radiation belts is modeled with a 2D pitch-angle, energy diffusion code. We find that the pitch angle distributions rapidly attain equilibrium shapes. Energy dependent lifetimes are on the scale of a day for MeV electrons and on the scale of a few hours for 10-100 keV electron population, which provides a source for chorus emissions. We show that the energy diffusion driven by whistler mode waves is capable of accelerating electrons up to energies of 3 MeV on the time scales of few days which is consistent with HEO and SAMPAX observations.
Horne R.
Mansergh Thorne Richard
Shprits Yuri Y.
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