NSSC OpenIR  > 空间科学部
Modeling for precipitation loss of ring current protons by electromagnetic ion cyclotron waves
Xiao, Fuliang; Chen, Liangxu; He, Yihua; Su, Zhenpeng; Zheng, Huinan; Xiao, FL (reprint author), Changsha Univ Sci & Technol, Sch Phys & Elect Sci, Changsha 410004, Hunan, Peoples R China.
Department空间科学部
Source PublicationJOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS
2011
Volume73Issue:1Pages:106-111
ISSN1364-6826
Language英语
KeywordWave-particle Interaction Ring Current Protons Precipitation Loss Emic Waves
AbstractWe examine the precipitation loss of ring current protons produced by the electromagnetic ion cyclotron (EMIC) waves at the location L=3.5 where the symmetrical ring current primarily occurs. Using a recently introduced hybrid finite difference (HFD) method, we solve the standard Fokker-Planck diffusion equation with incorporation of the cross diffusion terms that were often ignored in the previous work. We show that EMIC waves can produce efficient pitch angle scattering of energetic (tens of key) protons, yielding a rapid decrement in the flux with a time scale of a few hours, consistent with observational data. We also demonstrate that omission of the cross diffusion terms generally overestimates the decrement in the flux, typically by a factor of similar to 2 after a few hours at lower pitch angles, suggesting that the cross terms also play an important role in precipitation loss of ring current protons. (C) 2010 Elsevier Ltd. All rights reserved.; We examine the precipitation loss of ring current protons produced by the electromagnetic ion cyclotron (EMIC) waves at the location L=3.5 where the symmetrical ring current primarily occurs. Using a recently introduced hybrid finite difference (HFD) method, we solve the standard Fokker-Planck diffusion equation with incorporation of the cross diffusion terms that were often ignored in the previous work. We show that EMIC waves can produce efficient pitch angle scattering of energetic (tens of key) protons, yielding a rapid decrement in the flux with a time scale of a few hours, consistent with observational data. We also demonstrate that omission of the cross diffusion terms generally overestimates the decrement in the flux, typically by a factor of similar to 2 after a few hours at lower pitch angles, suggesting that the cross terms also play an important role in precipitation loss of ring current protons. (C) 2010 Elsevier Ltd. All rights reserved.
Indexed BySCI ; EI
Funding Project中国科学院空间科学与应用研究中心
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/3118
Collection空间科学部
Corresponding AuthorXiao, FL (reprint author), Changsha Univ Sci & Technol, Sch Phys & Elect Sci, Changsha 410004, Hunan, Peoples R China.
Recommended Citation
GB/T 7714
Xiao, Fuliang,Chen, Liangxu,He, Yihua,et al. Modeling for precipitation loss of ring current protons by electromagnetic ion cyclotron waves[J]. JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS,2011,73(1):106-111.
APA Xiao, Fuliang,Chen, Liangxu,He, Yihua,Su, Zhenpeng,Zheng, Huinan,&Xiao, FL .(2011).Modeling for precipitation loss of ring current protons by electromagnetic ion cyclotron waves.JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS,73(1),106-111.
MLA Xiao, Fuliang,et al."Modeling for precipitation loss of ring current protons by electromagnetic ion cyclotron waves".JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS 73.1(2011):106-111.
Files in This Item: Download All
File Name/Size DocType Version Access License
2011731106.pdf(895KB) 开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Xiao, Fuliang]'s Articles
[Chen, Liangxu]'s Articles
[He, Yihua]'s Articles
Baidu academic
Similar articles in Baidu academic
[Xiao, Fuliang]'s Articles
[Chen, Liangxu]'s Articles
[He, Yihua]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Xiao, Fuliang]'s Articles
[Chen, Liangxu]'s Articles
[He, Yihua]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 2011731106.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.