On spontaneous amplification of large-scale perturbations by two-dimensional electron magnetohydrodynamic turbulence

被引：5
|
作者：
Lakhin, VP
Moiseev, SS
机构：
[1] RRC Kurchatov Inst, Inst Nucl Fus, Moscow 123182, Russia
[2] Russian Acad Sci, Space Res Inst, Moscow 117810, Russia
来源：
PHYSICS LETTERS A | 1999年 / 263卷 / 4-6期
基金：
俄罗斯基础研究基金会;
关键词：
D O I：
10.1016/S0375-9601(99)00771-9
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The influence of small-scale turbulence on large-scale perturbations is studied in the model of 3-D electron magnetohydrodynamics (EMHD), in which the magnetic field has all three components. it is shown that in addition to positive turbulent viscosity and an analogue of alpha-effect caused by helicity of turbulence, which are typical to 3-D EMHD turbulence, such 2-D turbulence results in turbulent resistivity, which is caused by anisotropy of turbulence and can be negative. (C) 1999 Published by Elsevier Science B.V. All rights reserved.
引用
收藏
页码：386 / 392
页数：7
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