DIFFUSION OF ENERGETIC PARTICLES IN TURBULENT MAGNETOHYDRODYNAMIC PLASMAS

被引：8

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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