Multi-dimensional modeling of radiation belt electron pitch-angle diffusion coefficients caused by plasmaspheric hiss

Plasmaspheric hiss is an important wave mode in the Earth’s radiation belts. Hiss waves can scatter energetic electrons into loss cones to precipitate atmosphere, and therefore become source of fluctuations, leading belt lose . As a function electron energy pitch angle, diffusion coefficient for significantly influenced by solar wind geomagnetic activity, also strongly depends on spatial position, background magnetic field, plasma density distribution. In order quickly obtain coefficients modelling global dynamics belt, we systematically calculate using full code (FDC), build four-dimensional matrix database region <i>L</i> = 1.5–6, cold parameter <i>α</i><sup>*</sup> 3–30, 1 keV–10 MeV, throw angle 0°–90°. According database, with different values through linear interpolations. By comparing errors between calculated FDC those linearly interpolated from accuracies are validated, showing that most lie 10%. The validated interpolation method established this paper reduce time required information about coefficients, thereby rapidly improving computational efficiency carrying out simulations temporal changes belts over long periods time, which turn expected provide favourable conditions development dynamic forecasting models Earth's