Kelvin–Helmholtz instability in magnetically quantized dense plasmas

IF 1.8 4区 物理与天体物理 Q4 CHEMISTRY, PHYSICAL
Abdur Rasheed, Asif Nazir, Areeb Fatima, Bilal Ramzan, Zubia Kiran, Muhammad Jamil
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引用次数: 0

Abstract

Abstract This study deals with the instability of shear waves, also known as Kelvin–Helmholtz instability, propagating with a complex frequency ” ω ” in magnetically quantized dense gyro-viscous plasmas. The instability arises from the transverse spatial shear of the streaming velocity, which evolves from the DC electric and magnetic fields. In dense plasmas, quantum effects contribute through magnetically quantized statistical Fermi pressure, tunnelling potential and exchange-correlation potential. The contribution of the shear profile, the drift velocity, the number density of medium species, the dc magnetic field and the propagation angle θ of the wavevector on the instability is pointed out analytically as well as graphically. By varying the angle, shear size and density of plasma particles, the growth rate is enhanced. It does not, however, change as the streaming speed increases. This work seeks applications to study the characteristics of complex media like astrophysical and semiconductor plasmas [R. P. Drake, “Hydrodynamic instabilities in astrophysics and in laboratory high-energy–density systems,” Plasma Phys. Control. Fusion , vol. 47, p. B419, 2005].
磁量子化致密等离子体中的开尔文-亥姆霍兹不稳定性
摘要本文研究了以复频率“ω”在磁量子化稠密陀螺粘性等离子体中传播的剪切波的不稳定性,也称为开尔文-亥姆霍兹不稳定性。流速度的横向空间剪切引起了不稳定性,而流速度的横向空间剪切是由直流电场和磁场演变而来的。在致密等离子体中,量子效应通过磁量子化的统计费米压力、隧穿势和交换相关势起作用。用解析法和图解法指出了剪切剖面、漂移速度、介质种类数密度、直流磁场和波矢量传播角θ对不稳定性的贡献。通过改变等离子体粒子的角度、剪切尺寸和密度,可以提高等离子体粒子的生长速度。但是,它不会随着流媒体速度的增加而改变。这项工作寻求应用于研究复杂介质的特性,如天体物理和半导体等离子体[R]。P. Drake,“天体物理学和实验室高能量密度系统中的流体动力学不稳定性”,《等离子体物理学》。控制。核聚变,vol. 47, p. 419, 2005]。
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来源期刊
CiteScore
3.00
自引率
5.60%
发文量
81
审稿时长
3.3 months
期刊介绍: A Journal of Physical Sciences: Zeitschrift für Naturforschung A (ZNA) is an international scientific journal which publishes original research papers from all areas of experimental and theoretical physics. Authors are encouraged to pay particular attention to a clear exposition of their respective subject, addressing a wide readership. In accordance with the name of our journal, which means “Journal for Natural Sciences”, manuscripts submitted to ZNA should have a tangible connection to actual physical phenomena. In particular, we welcome experiment-oriented contributions.
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