A radial diffusion simulation of energetic particles in ULF compressional fluctuations

Details A radial diffusion simulation of energetic particles in ULF compressional fluctuations A radial diffusion simulation of energetic particles in ULF compressional fluctuations

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufmsm42a..05s&link_type=abstract

American Geophysical Union, Fall Meeting 2005, abstract #SM42A-05

Physics

2720 Energetic Particles: Trapped, 2730 Magnetosphere: Inner, 2753 Numerical Modeling, 2774 Radiation Belts

Scientific paper

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.

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