Electron scattering loss in Earth's inner magnetosphere 1. Dominant physical processes

Details Electron scattering loss in Earth's inner magnetosphere 1. Dominant physical processes Electron scattering loss in Earth's inner magnetosphere 1. Dominant physical processes

Feb 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998jgr...103.2385a&link_type=abstract

Journal of Geophysical Research, Volume 103, Issue A2, p. 2385-2396

Physics

Plasma Physics

150

Magnetospheric Physics: Energetic Particles, Trapped, Magnetospheric Physics: Magnetosphere-Inner, Space Plasma Physics: Charged Particle Motion And Acceleration, Space Plasma Physics: Wave/Particle Interactions

Scientific paper

Pitch angle diffusion rates due to Coulomb collisions and resonant interactions with plasmaspheric hiss, lightning-induced whistlers and anthropogenic VLF transmissions are computed for inner magnetospheric electrons. The bounce-averaged, quasi-linear pitch angle diffusion coefficients are input into a pure pitch angle diffusion equation to obtain L and energy dependent equilibrium distribution functions and precipitation lifetimes. The relative effects of each scattering mechanism are considered as a function of electron energy and L shell. Model calculations accurately describe the enhanced loss rates in the slot region, as well as reduced scattering in the heavily populated inner radiation belt. Predicted electron distribution function calculations in the slot region display a characteristic ``top hat'' distribution which is supported by observations. Inner zone electron lifetimes based on observed decay rates of the Starfish electron population are in approximate agreement with model predictions.

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