Pitch angle distributions, loss timescales and diffusion coefficients for the Earth's radiation belts

Drift-averaged pitch angle diffusion coefficients, and derived pitch angle distributions and loss timescales for electrons with energies from 100 keV to 4 MeV, L* in the range 2 to 7 and geomagnetic activity determined by the Kp index. The pitch angle distributions and loss timescales, for use in radiation belt models, are calculated from the diffusion coefficients assuming pure pitch angle diffusion and steady decay of the distribution.

Funding was provided by NERC grant NE/V00249X/1 (Sat-Risk)