Effects of the Mean Field Gradients on Magnetic Field Line Random Walk

被引：3
|
作者：
Vlad, Madalina [1 ]
机构：
[1] Natl Inst Laser Plasma & Radiat Phys, Atomistilor 409, Bucharest 077125, Romania
来源：
ASTROPHYSICAL JOURNAL | 2018年 / 867卷 / 02期
关键词：
convection; diffusion; magnetic fields; plasmas; turbulence; COSMIC-RAY PROPAGATION; PARTICLE DIFFUSION; CHARGED-PARTICLES; PERPENDICULAR DIFFUSION; TURBULENCE; TRANSPORT; PERCOLATION; PARALLEL;
D O I：
10.3847/1538-4357/aae392
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The 2D model of the field line random walk (FLRW) is developed by considering a space-dependent mean magnetic field B(0z)e(z) with perpendicular and parallel gradients, and a component in the perpendicular plane B-0 perpendicular to. The impact of the configuration of the mean field on FLRW is explored. We have found that both the diffusion (random walk) and the convection (ordered walk) are significantly modified. The diffusion is strongly influenced by the parallel gradient and by B-0 perpendicular to, while the perpendicular gradient generates a flow of the field lines along its direction. A synergistic effect between the three elements of the configuration of the mean field is found.
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页数：8
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