Quasi-linear Diffusion of Radiation Belt Electrons in 2D and 3D

Details Quasi-linear Diffusion of Radiation Belt Electrons in 2D and 3D Quasi-linear Diffusion of Radiation Belt Electrons in 2D and 3D

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufmsm33a0429a&link_type=abstract

American Geophysical Union, Fall Meeting 2005, abstract #SM33A-0429

Physics

2716 Energetic Particles: Precipitating, 2720 Energetic Particles: Trapped, 2730 Magnetosphere: Inner, 2772 Plasma Waves And Instabilities (2471), 2774 Radiation Belts

Scientific paper

A candidate mechanism for energizing outer zone radiation belt electrons is cyclotron-resonant interactions with chorus waves. Quasi-linear calculation of diffusion coefficients leads to significant pitch angle/energy cross diffusion, which greatly complicates numerical solutions for the evolving particle distribution. Recently, a technique has been presented which removes the problematic cross terms through a change of variables. Here, estimates of the error introduced by simply ignoring the cross terms are made, alternate versions of the proper treatment are discussed, and progress towards generalization to 3D is presented.

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