Ion drift instability in a strongly coupled collisional complex plasma

被引：12

作者：

Khrapak, Sergey ^{[1
,2
]}

Yaroshenko, Victoria ^{[1
]}

机构：

[1] Deutsch Zentrum Luft & Raumfahrt DLR, Inst Mat Phys Weltraum, D-82234 Wessling, Germany

[2] Russian Acad Sci, Joint Inst High Temp, Moscow 125412, Russia

来源：

PLASMA PHYSICS AND CONTROLLED FUSION | 2020年 / 62卷 / 10期

基金：

俄罗斯科学基金会;

关键词：

complex (dusty) plasma; dust acoustic waves; dust density waves; instabilities in dusty plasmas; ion drift instability; strongly coupled dusty plasma; DUST-ACOUSTIC-WAVES; FREQUENCY;

D O I：

10.1088/1361-6587/aba7f8

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：

We investigate the low-frequency wave mode associated with heavy particles and its instability in a collisional complex plasma with drifting ions. The effect of the ion drift on the sound velocity of this mode is discussed. The general condition of the instability is derived for subthermal ion drifts, taking into account strong coupling of the particle component. As a general tendency, strong coupling effects reduce the sound velocity and facilitate the occurrence of the ion drift instability. A wide parameter range is considered from the weakly collisional to strongly collisional regimes for the ion and particle components. The chosen plasma parameters are representative to the PK-4 experiment, currently operational on board the International Space Station.

引用

页数：8

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