Mathematics
Scientific paper
Feb 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995georl..22..291h&link_type=abstract
Geopysical Research Letters (ISSN 0094-8276), vol. 22, no. 3, p. 291-294
Mathematics
37
Earth Magnetosphere, Electric Fields, Magnetic Storms, Particle Acceleration, Planetary Magnetic Fields, Plasma Drift, Proton Belts, Protons, Computerized Simulation, Crres (Satellite), Inner Radiation Belt, Mathematical Models, Relativistic Particles, Satellite Observation
Scientific paper
The rapid formation of a new proton radiation belt at L approximately = 2.5 following the March 24, 1991 Storm Sudden Commencement (SSC) observed at the Combined Release and Radiation Effects Satellite (CRRES) satellite is modeled using a relativistic guiding center test particle code. The SSC is modeled by a bipolar electric field and associated compression and relaxation in the magnetic field, superimposed on a dipole magnetic field. The source population consists of both solar and trapped inner zone protons. The simulations show that while both populations contribute to drift echoes in the 20-80 MeV range, primary conditions is from the solar protons. Proton acceleration by the SSC differs from relativistic electron acceleration in that different source populations contribute and nonrelativistic conservation of the first adiabatic invariation leads to greater energization of protons for a given decrease in L. Model drift echoes and flux distribution in L at the time of injection compare well with CRRES observations.
Bernard Blake J.
Gussenhoven Susan M.
Hudson Mary K.
Kotelnikov Alexei D.
Li Xiaoliang
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