DIFFUSION OF ENERGETIC PARTICLES IN TURBULENT MAGNETOHYDRODYNAMIC PLASMAS

被引：9
|
作者：
Wisniewski, M. [1 ]
Spanier, F. [1 ]
Kissmann, R. [2 ]
机构：
[1] Univ Wurzburg, Lehrstuhl Astron, D-97074 Wurzburg, Germany
[2] Leopold Franzens Univ Innsbruck, Inst Astro & Teilchenphys, A-6020 Innsbruck, Austria
来源：
ASTROPHYSICAL JOURNAL | 2012年 / 750卷 / 02期
关键词：
cosmic rays; diffusion; plasmas; turbulence; IMPULSIVE SOLAR-FLARES; SELF-GENERATED TURBULENCE; COSMIC-RAY PROPAGATION; PERPENDICULAR DIFFUSION; CHARGED-PARTICLES; MAGNETIC-FIELD; SHOCK ACCELERATION; WIND TURBULENCE; UPWIND SCHEMES; TRANSPORT;
D O I：
10.1088/0004-637X/750/2/150
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
In this paper, we investigate the transport of energetic particles in turbulent plasmas. A numerical approach is used to simulate the effect of the background plasma on the motion of energetic protons. The background plasma is in a dynamically turbulent state found from numerical magnetohydrodynamic simulations, where we use parameters typical for the heliosphere. The implications for the transport parameters (i.e., pitch-angle diffusion coefficients and mean free path) are calculated and deviations from the quasi-linear theory are discussed.
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页数：10
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