Rayleigh-Taylor instability in dusty plasma experiment

被引：26
作者：
Avinash, K. [1 ]
Sen, A. [2 ]
机构：
[1] Univ Delhi, Dept Phys & Astrophys, Delhi 110007, India
[2] Inst Plasma Res, Bhat 382424, Gandhinagar, India
来源：
PHYSICS OF PLASMAS | 2015年 / 22卷 / 08期
关键词：
KELVIN-HELMHOLTZ INSTABILITY; ACOUSTIC-WAVES; MODES;
D O I：
10.1063/1.4928444
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：
The stability of a stratified dust cloud levitated in an anodic plasma is studied in the weakly and strongly coupled dust regimes. It is shown that the cloud is predominantly unstable to a Rayleigh-Taylor (RT) instability driven by a component of the ambient gravity in a direction opposite to the direction of dust density stratification in the cloud. The elasticity of the strongly coupled dust is shown to set a threshold for the RT instability, which is consistent with experimental observations. (C) 2015 AIP Publishing LLC.
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页数：4
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