Viscous damping of surface magnetohydrodynamic waves on magnetic interface in cold plasmas
Viscous damping of surface magnetohydrodynamic waves on magnetic interface in cold plasmas
复制标题
冷等离子体磁界面上表面磁流体动力波的粘性阻尼
DOI：
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发表时间：
1991
期刊：
影响因子：
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通讯作者：
M. Ruderman
中科院分区：
文献类型：
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作者：
M. Ruderman
研究了冷等离子体中磁界面上表面磁流体力学波的传播。考虑了各向异性离子粘度。只考虑在一个波周期内弱阻尼的长波。得到了色散方程。如果没有粘性，这个方程总是有一个根。研究了波的相速度、穿透深度和阻尼衰减与等离子体参数和波传播方向的关系。由此产生的应用程序描述的表面波阻尼在太阳日冕进行了讨论。
Surface magnetohydrodynamic wave propagation on a magnetic interface in a cold plasma is studied. The anisotropic ion viscosity is taken into account. Only long waves damping weakly in a wave period are considered. The dispersion equation is obtained. This equation is shown always to have exactly one root if there is no viscosity. The dependences of phase velocity, penetration depth and damping decrement of waves on the parameters of undisturbed plasma and wave propagation direction are investigated. The resulting application for describing of surface wave damping in the solar corona is discussed.