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JOURNAL OF GEOPHYSICAL RESEARCH,
VOL. 109,
A11209,
11 PP., 2004
doi:10.1029/2004JA010611
Low-altitude distribution of radiation belt electrons
The Aerospace Corporation, Los Angeles, California, USA
The Aerospace Corporation, Los Angeles, California, USA
Space Vehicles Directorate, Air Force Research Laboratory, Hanscom Air Force Base, Massachusetts, USA
A numerical simulation of the low-altitude electron radiation belt is described. It includes dependences on the electrons' bounce and drift phases, equatorial pitch angle, and kinetic energy in the range of ∼1 to several MeV at L = 3.5. Physical processes in addition to the adiabatic electron motion are pitch angle diffusion and backscattering from a realistic model atmosphere. Quasi-linear diffusion coefficients are calculated from a model of the whistler mode plasmaspheric hiss wave intensity. Comparisons of the simulation results with electron data from a low-altitude satellite show that the model accounts for the main features of the electron spatial distribution during selected periods of differing geomagnetic activity.
Received 3 June 2004; accepted 27 August 2004; published 10 November 2004.
Citation: (2004), Low-altitude distribution of radiation belt electrons, J. Geophys. Res., 109, A11209, doi:10.1029/2004JA010611.
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