HR: 11:20h
AN: SM42A-05    [Abstracts]
TI: A radial diffusion simulation of energetic particles in ULF compressional fluctuations
AU: * Sarris, T E
EM: sarris@lasp.colorado.edu
AF: DUTH-Democritus University, Vasilisis Sofias 1, Xanthi, 67100 Greece
AU: * Sarris, T E
EM: sarris@lasp.colorado.edu
AF: LASP-Univ. of Colorado, 1234 Innovation Drive, Boulder, CO 80303 United States
AU: Li, X
EM: lix@paracel.colorado.edu
AF: LASP-Univ. of Colorado, 1234 Innovation Drive, Boulder, CO 80303 United States
AU: Temerin, M
EM: mtemerin@ssl.berkeley.edu
AF: Space Sciences Lab, University of California-Berkeley, 7 Gauss Way, Berkeley, CA 94720-7450 United States
AB: We present the results from a particle-tracing simulation in modelled ULF fluctuations. The response of outer radiation belt energetic electrons is monitored and the radial diffusion coefficient is calculated from particle motion; these calculations are compared to theoretical estimates of the radial diffusion coefficient. The model allows us to study the effect of different azimuthal extent of perturbations, simulating different azimuthal modes of fluctuations. We present a comparison of the symmetric, electromagnetic radial diffusion coefficients for compressional, poloidal perturbations of mode numbers m=1 and m=2. We also present particle fluxes constructed from single-particle motion, and we compare them to measurements at geosynchronous orbit.
DE: 2720 Energetic particles: trapped
DE: 2730 Magnetosphere: inner
DE: 2753 Numerical modeling
DE: 2774 Radiation belts
SC: SPA-Magnetospheric Physics [SM]
MN: Fall Meeting 2005