Multidimensional Diffusive Acceleration and Loss of Radiation Belt Electrons

Physics

Scientific paper

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2716 Energetic Particles: Precipitating, 2730 Magnetosphere: Inner, 2753 Numerical Modeling, 2760 Plasma Convection (2463), 2774 Radiation Belts

Scientific paper

Radiation belt electrons are subject to pitch angle and energy diffusion by cyclotron-resonant waves, and radial diffusion by drift-resonant waves. Each of these may cause particle acceleration, loss, or both, depending on the initial and evolving gradients in phase space density (e.g., outward radial diffusion). Even the directions of the combined transport may be difficult to predict without detailed numerical modeling. A recently developed technique for including the effects of "cross" or "mixed" diffusion permits accurate 2D modeling at fixed L, and this is being extended to 3D. Progress and prototype simulations will be presented.

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