With inner radiation belt AKEBONO whistle wave parameter statistics model and background cold electron density model changed with altitude, as 1.4 ≤ L ≤ 2.0 electron bounce-averaged equator pitch angle diffusion coefficients due to Coulomb collision and wave-particle resonance interaction are calculated by using quasi-linear diffusion theory. Influences of interaction mechanisms, whistle wave types such as hiss, lightning-generated whistlers (LG), artificial very low frequency(VLF), energies and magnet shell parameter(L) on inner radiation belt energetic electrons diffusing loss are analyzed. It shows that Coulomb collision caused by atmosphere plays a dominant role in energetic electrons diffusion around equator loss cone angle, while hiss and LG are main diffusion factors near 90° of equator pitch angle. Wave-particle resonance diffusion caused by VLF plays a dominant role in inner radiation belt. Diffusion coefficients is sensitive to energetic electron energy and L. Usually, the greater the L or electron energy, the more significant the electron resonance diffusion coefficient is.

The atmosphere is a kind of non-uniform media,whose density drops rapidly with the increase of height.In order to simulate transport of gamma ray in high-altitude atmosphere,the media is divided into many uniform layers with different densities.To eliminate error,the number of layers should be as many as possible,which results in a large amount of computation.We propose a method without layering.It samples mass distance to replace step length of particles.The results agree well with those calculated directly by MCNP code.The method increases speed of computation considerably.