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Distribution of the Earth's radiation belts protons over the drift frequency of particles
Annales Geophysicae ( IF 1.7 ) Pub Date : 2020-10-29 , DOI: 10.5194/angeo-2020-67
Alexander S. Kovtyukh

Abstract. On the base of generalized data on the proton fluxes of the Earth's radiation belts (ERB) with energy from E ~ 0.2 MeV to 100 MeV at drift shells L from ~ 1 to 8, constructed stationary distributions of the ERB protons over the drift frequency fd of protons around the Earth. For this, direct measurements of proton fluxes of the ERB in the period 1961–2017 near the plane of the geomagnetic equator were used. The main physical processes in the ERB manifested more clearly in these distributions, and for protons with fd > 0.5 mHz at L > 3 distributions of the ERB protons in the space {fd, L} have a more orderly form than in the space {E, L}. It has been found also that the quantity of the ERB protons with fd ~ 1–10 mHz at L ~ 2 does not decrease, as for protons with E > 10–20 MeV (with fd > 10 mHz), but increases with an increase in solar activity. This means that the balance of radial transport and losses of the ERB low-energy protons at L ~ 2 is disrupt in advantage of transport: for these protons, the effect of an increase in the radial diffusion rates with increasing in solar activity overpowers the effect of an increase in the density of the dissipative medium.

中文翻译:

地球辐射带质子在粒子漂移频率上的分布

摘要。上对地球辐射带(ERB)与能量的质子通量广义数据从该基部ë  〜0.2兆电子伏到100兆电子伏的漂移壳大号从大约1至8个,构建了ERB质子的平稳分布在漂移频率fd地球周围的质子 为此,我们直接测量了1961-2017年期间地磁赤道平面附近的ERB质子通量。在这些分布中,ERB的主要物理过程更清楚地表现出来,并且对于f d  > 0.5 mHz且在L  > 3的质子,空间{ f dL }中的ERB质子的分布比在空间中的分布更有序。 {EL }。已发现也与该ERB的质子的数量˚F d  〜1-10兆赫在大号 〜2不会降低,作为用于质子与é  > 10-20兆电子伏(与˚F d  > 10兆赫),但是与增加太阳活动增加。这意味着,径向传送,并在该ERB低能量质子的损失的平衡大号 〜2个是扰乱优点运输的:对于这些质子,随着太阳活动增加的增加径向扩散率的效果压倒的效果耗散介质密度的增加。
更新日期:2020-10-30
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