Last Updated: 10/01/2023

Fok Radiation Belt Electron

Version: 1.0

The Fok Radiation Belt Model (RBE) is a bounce-averaged kinetic model of the radiation belt electrons. This model calculates the temporal and spatial variation of the phase space density of radiation belt electrons(e-), in the energy range of 10 - 4000 keV. The model considers particle drift, charge exchange loss, in realistic, time-varying magnetic and electric fields. The simulation region is from the dayside magnetopause to the nightside boundary at 10 earth radii. The model is an initial-boundary-value problem, so initial distribution and boundary distribution as a function of time is required to run the model.


Fok Radiation Belt Electron 1.0 Sample Output


3D Magnetic Fields (from SWMF GM/BATSRUS model) 2D Ionospheric height-integrated Potentials (SWMF IE/Ridley model) Equatorial Plasma Density (SWMF GM/BATSRUS) Equatorial Plasma Temperature (SWMF GM/BATSRUS)


Equatorial e- fluxes as functions of time, energy and pitch angle. Fluxes at off-equator can be obtained by assuming constant flux along a field line.

Model is time-dependant.


  • Geospace
  • Magnetosphere / Inner Magnetosphere / RadiationBelt

Space Weather Impacts

  • Near-earth radiation and plasma environment (aerospace assets functionality)



Code Languages: Fortran, IDL (post processing)


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