NSSC OpenIR  > 空间科学部
Effect of adiabatic cooling on the fitted parallel mean free path of solar energetic particles
Qin, G.; Zhang, M.; Dwyer, J. R.; 北京8701信箱
Department空间天气学国家重点实验室
Source PublicationJournal of Geophysical Research-Space Physics
2006
Volume111Issue:A8Pages:A08101
ISSN0148-0227
Language英语
KeywordRandom Magnetic-fields Interplanetary Transport Charged-particles Cosmic-rays Diffusion Model Propagation Turbulence Protons Deceleration
AbstractThe focused transport equation without adiabatic energy loss is widely used to model solar energetic particles' (SEP) interplanetary propagation by fitting spacecraft data. We incorporate the adiabatic energy loss effect, provided by the divergence of the solar wind flows, into the focused transport equation. The equation is then solved numerically using a time-backward stochastic integration method. We show the comparison between solutions of focused transport equations with and without energy loss. We found the effect of adiabatic cooling is significant on the time profile of the intensity of SEPs. It is also shown that without energy loss, for gradual events, we can only fit the initial phase of SEP events. However, with energy loss, we can fit the entire ( initial and decaying) phases. In addition, the values of the mean free path obtained by fitting the SEP events with energy loss is always smaller than that without. The results suggest that including adiabatic cooling effect is another way to partially fix the solar energetic particle mean free paths' "too small'' problem discussed by Bieber et al. ( 1994), i.e., the mean free paths obtained by fitting transport equation to observation data are much larger than the quasi-linear theory results.
Indexed BySCI
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/122/1045
Collection空间科学部
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
Qin, G.,Zhang, M.,Dwyer, J. R.,et al. Effect of adiabatic cooling on the fitted parallel mean free path of solar energetic particles[J]. Journal of Geophysical Research-Space Physics,2006,111(A8):A08101.
APA Qin, G.,Zhang, M.,Dwyer, J. R.,&北京8701信箱.(2006).Effect of adiabatic cooling on the fitted parallel mean free path of solar energetic particles.Journal of Geophysical Research-Space Physics,111(A8),A08101.
MLA Qin, G.,et al."Effect of adiabatic cooling on the fitted parallel mean free path of solar energetic particles".Journal of Geophysical Research-Space Physics 111.A8(2006):A08101.
Files in This Item: Download All
File Name/Size DocType Version Access License
2006111A8A08101.pdf(158KB) 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
[Qin, G.]'s Articles
[Zhang, M.]'s Articles
[Dwyer, J. R.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Qin, G.]'s Articles
[Zhang, M.]'s Articles
[Dwyer, J. R.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Qin, G.]'s Articles
[Zhang, M.]'s Articles
[Dwyer, J. R.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 2006111A8A08101.pdf
Format: Adobe PDF
This file does not support browsing at this time
All comments (0)
No comment.
 

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