A note on the binary interaction potential in complex (dusty) plasmas

被引：21

作者：

Khrapak, S. A. ^{[1
]}

Morfill, G. E. ^{[1
]}

机构：

[1] Max Planck Inst Extraterr Phys, D-85741 Garching, Germany

来源：

PHYSICS OF PLASMAS | 2008年 / 15卷 / 08期

关键词：

D O I：

10.1063/1.2967483

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 effect of ion-neutral collisions on the potential of interaction between a pair of negatively charged grains in isotropic weakly collisional plasmas is investigated. Two interaction mechanisms are considered: Electric repulsion between like-charged grains and attraction due to the so-called "ion shadow" effect. It is demonstrated that in the presence of collisions, both interaction potentials exhibit Coulomb-like alpha r(-1) decay at large distances. A necessary condition for the existence of long-range attraction is derived. The obtained results are then used to reconsider the possibility of liquid-vapor critical point occurrence in complex plasmas. (C) 2008 American Institute of Physics.

引用

页数：4

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