Diffusing Loss Effects of Inner Radiation Belt Energetic Electrons Based on AKEBONO Whistler Wave Parameters

Abstract

Abstract: 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.

Key words: AKEBONO model, whistler wave, diffusion coefficient, wave-particle resonance diffusion

CLC Number:

P354

LUO Xudong, NIU Shengli, ZUO Yinghong, TAO Yinglong. Diffusing Loss Effects of Inner Radiation Belt Energetic Electrons Based on AKEBONO Whistler Wave Parameters[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2017, 34(3): 335-343.

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