Analytical description of a neutral-induced tripole vortex in a plasma.
Analytical description of a neutral-induced tripole vortex in a plasma.
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等离子体中中性引起的三极涡旋的分析描述。
DOI：
10.1103/physrevlett.89.265002
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发表时间：
2002
影响因子：
8.6
通讯作者：
M. Tanaka
中科院分区：
文献类型：
--
作者：
J. Vranjes;A. Okamoto;S. Yoshimura;S. Poedts;M. Kono;M. Tanaka
本文给出了柱状等离子体中观察到的定常三重涡的解析描述。中性粒子的浓度在实验中相当高，由于空间分布的原因，它是至关重要的。在径向，中性浓度呈抛物线状，产生一个指向系统轴线的有效径向力。这种中性力导致等离子体沿与E-->；xB-->；漂移相反的方向旋转。定常的三重涡发展为初始高斯密度分布和等离子体柱的刚体旋转。
An analytical description of a stationary triple vortex, observed in a cylindrical plasma, is presented. The concentration of neutrals, which is rather high in the experiment, turns out to be of crucial importance due to a spatially dependent distribution. In the radial direction the neutral concentration is paraboliclike, yielding an effective radial force directed towards the axis of the system. This neutral force causes the rotation of the plasma in the direction which is opposite to the E-->xB--> drift. The stationary triple vortex develops for a starting Gaussian-density distribution and a rigid-body rotation of the plasma column.