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Influence of wave normal angle on gyroresonance between chorus waves and outer radiation belt electrons
Ding YuanHui; He ZhaoGuo; Zhang ZeLong; Xiao FuLiang; Xiao, FL (reprint author), Changsha Univ Sci & Technol, Sch Phys & Elect Sci, Changsha 410004, Hunan, Peoples R China.
Department空间环境部
Source PublicationSCIENCE CHINA-TECHNOLOGICAL SCIENCES
2013
Volume56Issue:11Pages:2681-2689
ISSN1674-7321
Language英语
KeywordDiffusion Coefficients Wave Normal Angle Resonant Interaction
AbstractIn this paper, using a Gaussian distribution of wave normal angle X=tan theta, and considering contributions of harmonic resonances n up to +/- 5, we analyze the effect of normal angle on diffusion coefficients induced by gyroresonance between chorus waves and electrons with energies 0.1 and 1.0 MeV on the dayside and nightside at L=4.5. When pitch angle alpha (e)> 10A degrees, for 0.1 and 1.0 MeV electrons on the dayside and nightside, diffusion coefficients of five orders (-2,-1, 0, 1, 2) decrease with increasing normal angle peak, leading to the total diffusion coefficients decreasing with increasing peak. When alpha (e)< 10A degrees, for 1.0 MeV electrons on the dayside and 0.1 MeV electrons on the dayside and nightside, the positive order diffusion coefficients are generally smaller than the same negative order ones; in the meanwhile, diffusion coefficients of orders (-2, 1, 2) are very small, the dominant order n=-1 diffusion coefficients change very little, hence the total diffusion coefficients almost remain unchanged. However, for 1.0 MeV electrons on the nightside, diffusion coefficients of orders (-2, 1, 2) which are larger than those of the order (-1) resonance increase with increasing peak, hence the total diffusion coefficients increase with increasing peak. The current results show that the wave normal angle plays an important role in the quantitative analysis of gyroresonance between chorus waves and electrons in the outer radiation belt.
Indexed BySCI ; EI
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/4995
Collection空间环境部
Corresponding AuthorXiao, FL (reprint author), Changsha Univ Sci & Technol, Sch Phys & Elect Sci, Changsha 410004, Hunan, Peoples R China.
Recommended Citation
GB/T 7714
Ding YuanHui,He ZhaoGuo,Zhang ZeLong,et al. Influence of wave normal angle on gyroresonance between chorus waves and outer radiation belt electrons[J]. SCIENCE CHINA-TECHNOLOGICAL SCIENCES,2013,56(11):2681-2689.
APA Ding YuanHui,He ZhaoGuo,Zhang ZeLong,Xiao FuLiang,&Xiao, FL .(2013).Influence of wave normal angle on gyroresonance between chorus waves and outer radiation belt electrons.SCIENCE CHINA-TECHNOLOGICAL SCIENCES,56(11),2681-2689.
MLA Ding YuanHui,et al."Influence of wave normal angle on gyroresonance between chorus waves and outer radiation belt electrons".SCIENCE CHINA-TECHNOLOGICAL SCIENCES 56.11(2013):2681-2689.
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