Simulating Three Dimensional Radiation Belt Dynamics

Physics

Scientific paper

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2720 Energetic Particles, Trapped, 7807 Charged Particle Motion And Acceleration, 7843 Numerical Simulation Studies, 7867 Wave/Particle Interactions

Scientific paper

The model by Elkington et al. [1999], which uses a compressed dipole and a time-varying electric field in two dimensions, is extended to three dimensions by specifying a poloidal mode ULF wave with a single vector potential component described by Li et al. [1993] resulting in Eφ , Br and B//. The toroidal mode can similarly be specified by a single vector potential component yielding Er and Bφ . These vector potentials assume a Gaussian radial amplitude profile, a simple sine or cosine for the parallel mode structure and a time varying exponential depending on the mode number and angle in the azimuthal direction. Elkington, S. R., M. K. Hudson, and A. A. Chan, Acceleration of relativistic electrons via drift-resonant interaction with toroidal-mode Pc-5 ULF oscillations,Geophys. Res. Lett., 26, 3273, 1999. Li, X., M. K. Hudson, A. A. Chan, and I. Roth, Loss of ring current O+ ions due to interaction with Pc-5 waves, J. Geophys. Res., 98, 215, 1993.

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