HR: 1340h
AN: SM33A-0429    [Abstracts]
TI: Quasi-linear Diffusion of Radiation Belt Electrons in 2D and 3D
AU: * Albert, J M
EM: jay.albert@hanscom.af.mil
AF: Air Force Research Laboratory, AFRL/VSBXR 29 Randolph Road, Hanscom AFB, MA 01731-3010 United States
AB: 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.
DE: 2716 Energetic particles: precipitating
DE: 2720 Energetic particles: trapped
DE: 2730 Magnetosphere: inner
DE: 2772 Plasma waves and instabilities (2471)
DE: 2774 Radiation belts
SC: SPA-Magnetospheric Physics [SM]
MN: Fall Meeting 2005