Dust acoustic waves in a collisional strongly coupled dusty plasmas

被引：15

作者：

El-Awady, E. I. ^{[1
]}

Djebli, M. ^{[2
]}

机构：

[1] Port Said Univ, Dept Phys, Fac Sci, Port Said, Egypt

[2] USTHB, Theoret Phys Lab, Fac Phys, Algiers 16023, Algeria

来源：

ASTROPHYSICS AND SPACE SCIENCE | 2012年 / 342卷 / 01期

关键词：

Shock; Soliton; Coupling; LOW-FREQUENCY MODES; TRANSVERSE-WAVES; COULOMB CRYSTAL; SOLITARY; EQUATION; PHYSICS; STATE;

D O I：

10.1007/s10509-012-1159-6

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Progress in understanding the nonlinear features of dust-acoustic waves (DAWs) which accompany a collisional strongly and weakly coupled unmagnetized dusty plasma with Boltzmann distributed electrons, ions and negatively charged dust grains is presented. By using a hydrodynamic model, the Korteweg-de Vries-Burgers (KdV-Burgers) equation is derived. The existence regions of the solitary pulses are defined precisely. Furthermore, numerical calculations reveal that, due to collisions, the DAWs damp waves and the damping rate of the waves depends mainly on the collision frequency. The collisions are found to significantly change the basic properties of the DAWs. The effects of electron-to-ion concentration ratio, and ion-to-electron temperature ratio have important roles in the behavior of the DAWs. The results may have relevance in space and laboratory dusty plasmas.

引用

页码：105 / 111

页数：7

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