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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 PublicationPLASMA PHYSICS AND CONTROLLED FUSION
2013
Volume55Issue:6Pages:62001
ISSN0741-3335
Language英语
AbstractWe 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 BySCI ; EI
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/5073
Collection空间科学部
Corresponding AuthorYang, 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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