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The combined kinetic effects of the ion temperature gradient and the velocity shear of a plasma flow parallel to the magnetic field on the drift-Alfven instabilities
Physics of Plasmas ( IF 2.2 ) Pub Date : 2020-11-01 , DOI: 10.1063/5.0021634
V. V. Mikhailenko 1, 2 , V. S. Mikhailenko 1 , H. J. Lee 3
Affiliation  

The drift-Alfven instabilities of the sheared flow along the magnetic field of a finite beta ( 1 > β ≫ m e / m i ) plasma with comparable inhomogeneous ion temperature and homogeneous electron temperature are examined by the numerical analysis of the derived linear dispersion equation. Accounting for the electromagnetic ion kinetic response, which has been neglected in conventional discussions of the drift-Alfven instabilities of a steady plasma, a new kinetic drift-Alfven instability has been found. It develops in a plasma shear flow due to the coupled action of the ion temperature gradient, the flow velocity shear, and the inverse ion Landau damping.

中文翻译:

离子温度梯度和平行于磁场的等离子体流的速度剪切对漂移-阿尔文不稳定性的综合动力学影响

通过对导出的线性色散方程进行数值分析,研究了具有可比不均匀离子温度和均匀电子温度的有限 β (1 > β ≫ me / mi ) 等离子体磁场中剪切流的漂移-阿尔芬不稳定性。考虑到在稳定等离子体的漂移-阿尔文不稳定性的常规讨论中被忽略的电磁离子动力学响应,已经发现了新的动力学漂移-阿尔文不稳定性。由于离子温度梯度、流速剪切和反离子朗道阻尼的耦合作用,它在等离子体剪切流中发展。
更新日期:2020-11-01
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