HR: 1340h
AN: SM33A-0442    [Abstracts]
TI: Pitch Angle and L Dependence of Radial Diffusion Coefficients in a Compressed Dipole
AU: * Perry, K
EM: kara.perry.ctr@hanscom.af.mil
AF: Boston College, St. Clement's Hall 140 Commonwealth Ave, Chestnut Hill, MA 02467 United States
AU: Albert, J
EM: Jay.Albert@hanscom.af.mil
AF: AFRL, 29 Randolph Rd., Hanscom AFB, MA 01731 United States
AB: The influence of ULF waves in the Pc5 frequency range on radiation belt electrons in a compressed dipole magnetic field is examined. A model is developed describing magnetic and electric fields associated with poloidal-mode Pc5 ULF waves. The frequency and L dependence of the ULF wave power is included in this model by incorporating published ground-based magnetometer data. This ULF model is added to a compressed dipole and used as input to a three dimensional guiding center particle code. L and pitch angle dependence of the diffusion rates are analyzed. Results are then compared to previous diffusion coefficients calculated using a dipole magnetic field model for pitch angles ≤ 90°.
DE: 2720 Energetic particles: trapped
DE: 2774 Radiation belts
DE: 7807 Charged particle motion and acceleration
DE: 7867 Wave/particle interactions (2483, 6984)
SC: SPA-Magnetospheric Physics [SM]
MN: Fall Meeting 2005