空间等离子体环境中的高能带电粒子加速机制

The acceleration of energetic charged particles in space plasma environment

空间环境中充满能量从几十ke V到几Me V的高能带电粒子,这些粒子可导致在轨航天器表面和内部带电甚至单粒子效应,从而引发航天器故障。高能粒子的产生和日地空间环境中的爆发现象如耀斑、磁层亚暴等密切相关。文章综述了与这些爆发现象相关的磁重联、激波和等离子体波动等加速带电粒子的物理过程。

Energetic particles with energy ranging from tens of keV to several MeV exist ubiquitously in the space environment, and they can lead to electrical charge accumulation on the surface and the inside of satellites, or even single event upsets. The generation of these energetic particles is closely related with the eruptive phenomena in the space environment, such as solar flares, magnetosphere sub-storms. This paper reviews the mechanisms of particle acceleration in magnetic reconnection, shock, and wave-particle interaction, which are associated with these eruptive phenomena.