HR: 0800h
AN: SM41A-1174    [Abstracts]
TI: Calculating Quasi-Linear Pitch Angle Diffusion Coefficients in Terms of the Wave Normal Angle
AU: * Abel, B
EM: babel@olympic.edu
AF: Olympic College, 1600 Chester Ave., Bremerton, WA 98337-1699 United States
AU: Thorne, R M
EM: rmt@atmos.ucla.edu
AF: UCLA Dept. of Atmos. Sciences, Box 951565 7127 Math Sciences Bldg., Los Angeles, CA 90095-1565 United States
AB: 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.
DE: 2483 Wave/particle interactions (7867)
DE: 2700 MAGNETOSPHERIC PHYSICS (6939)
DE: 2720 Energetic particles: trapped
DE: 2774 Radiation belts
SC: SPA-Magnetospheric Physics [SM]
MN: Fall Meeting 2005