Weakly Magnetized, Hall Dominated Plasma Couette Flow.
Weakly Magnetized, Hall Dominated Plasma Couette Flow.
复制标题
弱磁化、霍尔主导的等离子体库埃特流。
DOI：
10.1103/physrevlett.125.135001
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发表时间：
2020
影响因子：
8.6
通讯作者：
C. Forest
中科院分区：
文献类型：
--
作者：
K. Flanagan;J. Milhone;J. Egedal;D. Endrizzi;J. Olson;E. Peterson;R. Sassella;C. Forest
本文描述了一种新的高β霍尔区等离子体平衡，这种平衡产生中心峰值的高马赫数库埃特流。使用弱的均匀磁场和大的交叉场电流驱动流动。当电子径向向内流动时，由于霍尔效应而观察到大的磁场放大（因子20），并且当流动反向时观察到接近完美的场驱逐。在放大的（去除的）场和扩展的密度梯度之间达到动态平衡。
A novel plasma equilibrium in the high-β, Hall regime that produces centrally peaked, high Mach number Couette flow is described. Flow is driven using a weak, uniform magnetic field and large, cross field currents. Large magnetic field amplification (factor 20) due to the Hall effect is observed when electrons are flowing radially inward, and near perfect field expulsion is observed when the flow is reversed. A dynamic equilibrium is reached between the amplified (removed) field and extended density gradients.