MODIFICATION OF THE PARALLEL SCATTERING MEAN FREE PATH OF COSMIC RAYS IN THE PRESENCE OF ADIABATIC FOCUSING

doi:10.1088/0004-637X/792/2/85

	MODIFICATION OF THE PARALLEL SCATTERING MEAN FREE PATH OF COSMIC RAYS IN THE PRESENCE OF ADIABATIC FOCUSING
	He, H. -Q.1,2; Schlickeiser, R.1
刊名	ASTROPHYSICAL JOURNAL
	2014-09-10
卷号	792 期号:2
关键词	cosmic rays diffusion magnetic fields
ISSN号	0004-637X
DOI	10.1088/0004-637X/792/2/85
文献子类	Article
英文摘要	The cosmic ray mean free path in a large-scale nonuniform guide magnetic field with superposed magnetostatic turbulence is calculated to clarify some conflicting results in the literature. A new, exact integro-differential equation for the cosmic-ray anisotropy is derived from the Fokker-Planck transport equation. A perturbation analysis of this integro-differential equation leads to an analytical expression for the cosmic ray anisotropy and the focused transport equation for the isotropic part of the cosmic ray distribution function. The derived parallel spatial diffusion coefficient and the associated cosmic ray mean free path include the effect of adiabatic focusing and reduce to the standard forms in the limit of a uniform guide magnetic field. For the illustrative case of isotropic pitch angle scattering, the derived mean free path agrees with the earlier expressions of Beeck & Wibberenz, Bieber & Burger, Kota, and Litvinenko, but disagrees with the result of Shalchi. The disagreement with the expression of Shalchi is particularly strong in the limit of strong adiabatic focusing.
WOS关键词	SOLAR ENERGETIC PARTICLES ; RANDOM MAGNETIC-FIELDS ; DIFFUSION-COEFFICIENT ; CHARGED-PARTICLES ; TRANSPORT ; APPROXIMATION ; PROPAGATION
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000341172200003
资助机构	Deutsche Forschungsgemeinschaft(Schl 201/23-1 ; Deutsche Forschungsgemeinschaft(Schl 201/23-1 ; National Natural Science Foundation of China(41204130 ; National Natural Science Foundation of China(41204130 ; National Important Basic Research Project(2011CB811405) ; National Important Basic Research Project(2011CB811405) ; International Postdoctoral Exchange Fellowship Program of China(20130023) ; International Postdoctoral Exchange Fellowship Program of China(20130023) ; Schl 201/29-1) ; Schl 201/29-1) ; 41321003 ; 41321003 ; 41131066) ; 41131066) ; Deutsche Forschungsgemeinschaft(Schl 201/23-1 ; Deutsche Forschungsgemeinschaft(Schl 201/23-1 ; National Natural Science Foundation of China(41204130 ; National Natural Science Foundation of China(41204130 ; National Important Basic Research Project(2011CB811405) ; National Important Basic Research Project(2011CB811405) ; International Postdoctoral Exchange Fellowship Program of China(20130023) ; International Postdoctoral Exchange Fellowship Program of China(20130023) ; Schl 201/29-1) ; Schl 201/29-1) ; 41321003 ; 41321003 ; 41131066) ; 41131066) ; Deutsche Forschungsgemeinschaft(Schl 201/23-1 ; Deutsche Forschungsgemeinschaft(Schl 201/23-1 ; National Natural Science Foundation of China(41204130 ; National Natural Science Foundation of China(41204130 ; National Important Basic Research Project(2011CB811405) ; National Important Basic Research Project(2011CB811405) ; International Postdoctoral Exchange Fellowship Program of China(20130023) ; International Postdoctoral Exchange Fellowship Program of China(20130023) ; Schl 201/29-1) ; Schl 201/29-1) ; 41321003 ; 41321003 ; 41131066) ; 41131066) ; Deutsche Forschungsgemeinschaft(Schl 201/23-1 ; Deutsche Forschungsgemeinschaft(Schl 201/23-1 ; National Natural Science Foundation of China(41204130 ; National Natural Science Foundation of China(41204130 ; National Important Basic Research Project(2011CB811405) ; National Important Basic Research Project(2011CB811405) ; International Postdoctoral Exchange Fellowship Program of China(20130023) ; International Postdoctoral Exchange Fellowship Program of China(20130023) ; Schl 201/29-1) ; Schl 201/29-1) ; 41321003 ; 41321003 ; 41131066) ; 41131066)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/85813]
专题	中国科学院地质与地球物理研究所
通讯作者	He, H. -Q.
作者单位	1.Ruhr Univ Bochum, Lehrstuhl Weltraum & Astrophys 4, Inst Theoret Phys, D-44780 Bochum, Germany 2.Chinese Acad Sci, Inst Geol & Geophys, Div Geomagnetism & Space Phys, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	He, H. -Q.,Schlickeiser, R.. MODIFICATION OF THE PARALLEL SCATTERING MEAN FREE PATH OF COSMIC RAYS IN THE PRESENCE OF ADIABATIC FOCUSING[J]. ASTROPHYSICAL JOURNAL,2014,792(2).
APA	He, H. -Q.,&Schlickeiser, R..(2014).MODIFICATION OF THE PARALLEL SCATTERING MEAN FREE PATH OF COSMIC RAYS IN THE PRESENCE OF ADIABATIC FOCUSING.ASTROPHYSICAL JOURNAL,792(2).
MLA	He, H. -Q.,et al."MODIFICATION OF THE PARALLEL SCATTERING MEAN FREE PATH OF COSMIC RAYS IN THE PRESENCE OF ADIABATIC FOCUSING".ASTROPHYSICAL JOURNAL 792.2(2014).