Dust kinetic Alfven and acoustic waves in a Lorentzian plasma

被引：26

作者：

Rubab, N. ^{[1
,2
]}

Erkaev, N. V. ^{[3
,4
]}

Biernat, H. K. ^{[1
,2
]}

机构：

[1] Austrian Acad Sci, Space Res Inst, A-8042 Graz, Austria

[2] Graz Univ, Inst Phys, A-8010 Graz, Austria

[3] Inst Computat Modelling, Krasnoyarsk 660036, Russia

[4] Siberian Fed Univ, Krasnoyarsk 660041, Russia

来源：

PHYSICS OF PLASMAS | 2009年 / 16卷 / 10期

关键词：

DEBYE LENGTH; PARTICLES; MODES; INSTABILITY; ELECTRONS; SHEET;

D O I：

10.1063/1.3244625

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Dust kinetic Alfven waves (DKAWs) with finite Larmor radius effects have been examined rigorously in a uniform dusty plasma in the presence of an external magnetic field. A dispersion relation of low-frequency DKAW on the dust acoustic velocity branch is obtained in a low-beta Lorentzian plasma. It is found that the influence of the Lorentzian distribution function is more effective for perpendicular component of group velocity as compared with parallel one. Lorentzian-type charging currents are obtained with the aid of Vlasov theory. Damping/instability due to dust charge fluctuation is found to be insensitive with the form of distribution function for DKAW. The possible applications to dusty space plasmas are pointed out. (C) 2009 American Institute of Physics. [doi: 10.1063/1.3244625]

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页数：6

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