Effect of seed electron injection on chorus-driven acceleration of radiation belt electrons
文献类型：期刊论文
| 作者 | Yan Qi1,2; Shi LiQing1; Liu SiQing1 |
| 刊名 | SCIENCE CHINA-TECHNOLOGICAL SCIENCES
 |
| 出版日期 | 2013-02-01 |
| 卷号 | 56期号:2页码:492-498 |
| 关键词 | seed electrons chorus waves radiation belt electrons |
| ISSN号 | 1674-7321 |
| 通讯作者 | 北京8701信箱 |
| 中文摘要 | the Initiative Project of Chinese Academy of Sciences (Grant No. YYYJ-1110) |
| 英文摘要 | Using the hybrid finite difference method, we solve the Fokker-Planck equation to study the effect of seed electron injection on acceleration of radiation belt electrons driven by chorus waves. Numerical results show that in the absence of injection chorus waves can accelerate electrons at large pitch angles (alpha(e)>60 degrees), producing enhancements in the phase space density (PSD) of (1-2 MeV) electrons by a factor of 100-1000 within 1-2 days. In the presence of injection, chorus waves yield increase in PSD of electrons by accelerating the injected seed electrons. Meanwhile, the PSD evolution increases as the pitch angle increases but decreases as electron energy increases. Moreover, the PSD evolution can extend to higher energies with a time scale of 1-2 days for 1-2 MeV energies. When the injection increases by a factor of 10 higher than the initial value and remains for about two days, maximum values of PSD for 1 or 2 MeV increase to 6 or 3 times respectively higher than those without injection in two days. The current results suggest that the injected seed electrons play an important role in the evolution of the radiation belt electrons. |
| 学科主题 | 空间环境 |
| 语种 | 英语 |
| 源URL | [http://ir.cssar.ac.cn/handle/122/480]  |
| 专题 | 国家空间科学中心_空间环境部 |
| 作者单位 | 1.Chinese Acad Sci, Ctr Space Sci & Appl Res, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yan Qi,Shi LiQing,Liu SiQing. Effect of seed electron injection on chorus-driven acceleration of radiation belt electrons[J]. SCIENCE CHINA-TECHNOLOGICAL SCIENCES,2013,56(2):492-498. |
| APA | Yan Qi,Shi LiQing,&Liu SiQing.(2013).Effect of seed electron injection on chorus-driven acceleration of radiation belt electrons.SCIENCE CHINA-TECHNOLOGICAL SCIENCES,56(2),492-498. |
| MLA | Yan Qi,et al."Effect of seed electron injection on chorus-driven acceleration of radiation belt electrons".SCIENCE CHINA-TECHNOLOGICAL SCIENCES 56.2(2013):492-498. |
入库方式： OAI收割
来源：国家空间科学中心
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