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线性磁化等离子体中的低频湍动。

Low-frequency turbulence in a linear magnetized plasma.

机构信息

Department of Physics and Astronomy, Dartmouth College, Hanover, New Hampshire 03755, USA.

出版信息

Phys Rev Lett. 2010 Jun 4;104(22):225002. doi: 10.1103/PhysRevLett.104.225002. Epub 2010 Jun 2.

Abstract

Plasma turbulence in a linear device is explored for the first time with three-dimensional global two-fluid simulations, focusing on the plasma parameters of the Large Plasma Device. Three instabilities are present in the simulations: the Kelvin-Helmholtz instability, a sheath-driven instability, and a resistive drift wave instability. The Kelvin-Helmholtz mode is shown to dominate the transport of plasma across the magnetic field. Simple scaling laws are obtained for the plasma profiles.

摘要

首次利用三维全局双流体模拟研究了线性装置中的等离子体湍流,重点关注大型等离子体装置的等离子体参数。模拟中存在三种不稳定性:开尔文-亥姆霍兹不稳定性、鞘层驱动不稳定性和电阻漂移波不稳定性。结果表明,开尔文-亥姆霍兹模式主导了等离子体横越磁场的输运。得到了等离子体轮廓的简单标度律。

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