Calculating Quasi-Linear Pitch Angle Diffusion Coefficients in Terms of the Wave Normal Angle

Details Calculating Quasi-Linear Pitch Angle Diffusion Coefficients in Terms of the Wave Normal Angle Calculating Quasi-Linear Pitch Angle Diffusion Coefficients in Terms of the Wave Normal Angle

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufmsm41a1174a&link_type=abstract

American Geophysical Union, Fall Meeting 2005, abstract #SM41A-1174

Physics

2483 Wave/Particle Interactions (7867), 2700 Magnetospheric Physics (6939), 2720 Energetic Particles: Trapped, 2774 Radiation Belts

Scientific paper

Resonant pitch angle diffusion of magnetospherically trapped charged particles is modeled in terms of the wave normal angle. The relativistic, multi-species formulation utilizes the full quasi-linear dispersion relation. The resonant wave angle solution reduces to a quadratic equation, compared to the tenth order polynomial produced when the same relation is solved in terms of the wave frequency. Although it must still be tested numerically, this method could lead to faster, more detailed simulations of steady state pitch angle diffusion processes affecting the radiation belt population.

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