The scattering mean free path of cosmic ray particles in isotropic damped plasma wave turbulence

被引：2

作者：

Vukcevic, M. ^{[1
,2
]}

机构：

[1] Ruhr Univ Bochum, Inst Theoret Phys, Lehrstuhl Weltraum & Astrophys 4, D-44780 Bochum, Germany

[2] Univ Def, Mil Acad, Belgrade 11000, Serbia

来源：

ASTRONOMY & ASTROPHYSICS | 2013年 / 555卷

关键词：

scattering; ACCELERATION; POLARIZATION; PROPAGATION; POSITRONS; TRANSPORT; ORIGIN;

D O I：

10.1051/0004-6361/201321191

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

An analytical expression for the mean free path of single-charged cosmic ray particles, especially for positrons, is derived in isotropic plasma wave turbulence, where the crucial scattering of cosmic ray particles with small pitch-angle cosines is caused by resonant cyclotron interactions with oblique magnetosonic waves. In this calculation, viscous damping effects are included, which results in broadening of the resonance function. It is demonstrated that including resonance function broadening ensures a finite mean free path for cosmic ray energies, for which previously reported types of turbulence predicted an infinitely large mean free path.

引用

页数：10

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