| 太阳高能粒子在行星际中的扩散过程 |
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| 引用本文： | 秦刚,汪洋.太阳高能粒子在行星际中的扩散过程[J].航天器环境工程,2015,32(2):153-156. |
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| 作者姓名： | 秦刚 汪洋 |
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| 作者单位： | 中国科学院 国家空间科学中心 空间天气国家重点实验室,北京,100190 |
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| 摘 要： | 当太阳活动频繁,特别是有耀斑爆发或者日冕物质抛射驱动的激波时,经常能够观察到高能粒子(能量从几十ke V到几十Me V)通量突然增加,这种由太阳活动产生的高能粒子事件被称为太阳高能粒子事件。文章研究了耀斑和日冕物质抛射产生的两类高能粒子事件,重点讨论了高能粒子横越磁力线的扩散对粒子在行星际空间传播过程中所起到的作用,给出了对于不同扩散系数条件的数值模拟结果。
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| 关 键 词： | 太阳活动 空间等离子体 高能带电粒子 太阳耀斑 日冕物质抛射 |
| 收稿时间： | 2015/1/28 0:00:00 |
| 修稿时间： | 2015/3/20 0:00:00 |
The diffusion process of solar energetic particles in the interplanetary space |
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| Qin Gang,Wang Yang.The diffusion process of solar energetic particles in the interplanetary space[J].Spacecraft Environment Engineering,2015,32(2):153-156. |
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| Authors: | Qin Gang Wang Yang |
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| Institution: | Qin Gang;Wang Yang;State Key Laboratory of Space Weather, National Space Science Center, Chinese Academy of Sciences; |
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| Abstract: | When the solar activity is frequent, especially when it is accompanied with solar flares or coronal mass ejection (CME) driven shocks, a sudden increase of the flux of the solar energetic particles (from dozens of keV to dozens of MeV) can often be detected. The energetic particles produced by the solar activity are named the solar energetic particles (SEPs). In this paper, two typical events of the high-energy particles generated by solar flares and CME driven shocks are reviewed, with a special focus on the effect of the perpendicular diffusion of the SEPs propagating in the interplanetary space. Numerical simulation results are given for different diffusion parameters. |
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| Keywords: | solar activities space plasma energetic particles solar flare coronal mass ejection |
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