Bounce-averaging of scattering rates in a realistic field model

Details Bounce-averaging of scattering rates in a realistic field model Bounce-averaging of scattering rates in a realistic field model

Dec 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsm13b2077o&link_type=abstract

American Geophysical Union, Fall Meeting 2011, abstract #SM13B-2077

Physics

[2774] Magnetospheric Physics / Radiation Belts

Scientific paper

Radiation belt diffusion codes require as an input precomputed diffusion coefficients. Usually scattering rates are bounce-averaged in the dipole magnetic field. We present the results of computations of bounce-averaged quasi-linear momentum, pitch-angle, and mixed diffusion coefficients in a realistic magnetic field model. We assume that electrons resonate with oblique chorus waves with Gaussian distribution of wave power spectral density and wave normal angle outside the plasmasphere. The comparison of bounce-averaged diffusion coefficients in Tsyganenko models with those in the dipole field shows that while there are still a number of unknown parameters that determine scattering rates, inclusion of bounce-averaging in the realistic field is crucially important for radiation belt modeling.

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