About Trapped Particle Models at CCMC

The flux of trapped electrons and protons in the Earth's radiation belt has been measured by a large number of satellites over the last three decades. Knowledge of the particle environment is essential for estimates of the radiation exposure of humans and materials in space. J. Vette and his colleagues at NSSDC have developed and improved empirical models for the trapped particle fluxes since the mid-sixties. The particle fluxes can best be described in terms of the coordinates B/Bo and L; Bo is the magnetic field strength at the magnetic equator (minimum value). Application of these models requires, therefore, the use of a geomagnetic field model.
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