| Temporal evolution of relativistic electrons induced by fast magnetosonic waves in the radiation belts | |
| Yang, Chang; He, Yihua; Zhang, Lewei; Zhou, Qinghua; Xiao, Fuliang; Yang, C (reprint author), Changsha Univ Sci & Technol, Sch Phys & Elect Sci, Changsha 410004, Hunan, Peoples R China. | |
| Department | 空间科学部 |
| Source Publication | PLASMA PHYSICS AND CONTROLLED FUSION
 |
| 2013 | |
| Volume | 55Issue:6Pages:62001 |
| ISSN | 0741-3335 |
| Language | 英语 |
| Abstract | We study the influence of fast magnetosonic ( MS) waves on the temporal evolution of the phase space density (PSD) of relativistic electrons in the outer radiation belts. We evaluate the bounce-averaged pitch angle, momentum and cross-diffusion rates, and find that all the diffusion rates are most pronounced within a limited region of pitch angles: similar to 50 degrees-70 degrees. Consequently, numerical solutions of a 2D momentum-pitch angle diffusion equation show that significant increases in electron PSDs at energies of 1 MeV or above occur primarily within such a limited region of pitch angles. Moreover, neglecting cross-diffusion rates generally produces relatively large overestimates in the PSD evolution. The current results suggest that MS waves are primarily responsible for acceleration of relativistic (>1 MeV) electrons around relatively high pitch angles. |
| Indexed By | SCI ; EI |
| Document Type | 期刊论文 |
| Identifier | http://ir.nssc.ac.cn/handle/122/5073 |
| Collection | 空间科学部 |
| Corresponding Author | Yang, C (reprint author), Changsha Univ Sci & Technol, Sch Phys & Elect Sci, Changsha 410004, Hunan, Peoples R China. |
| Recommended Citation GB/T 7714 | Yang, Chang,He, Yihua,Zhang, Lewei,et al. Temporal evolution of relativistic electrons induced by fast magnetosonic waves in the radiation belts[J]. PLASMA PHYSICS AND CONTROLLED FUSION,2013,55(6):62001. |
| APA | Yang, Chang,He, Yihua,Zhang, Lewei,Zhou, Qinghua,Xiao, Fuliang,&Yang, C .(2013).Temporal evolution of relativistic electrons induced by fast magnetosonic waves in the radiation belts.PLASMA PHYSICS AND CONTROLLED FUSION,55(6),62001. |
| MLA | Yang, Chang,et al."Temporal evolution of relativistic electrons induced by fast magnetosonic waves in the radiation belts".PLASMA PHYSICS AND CONTROLLED FUSION 55.6(2013):62001. |
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