Linear and nonlinear excitations in complex plasmas with nonadiabatic dust charge fluctuation and dust size distribution  

作　　者：张丽萍 薛具奎 李延龙 

机构地区：[1]School of Sciences,Lanzhou University of Technology [2]College of Physics and Electronic Engineering,Northwest Normal University

出　　处：《Chinese Physics B》2011年第11期376-381,共6页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.10975114);the Prominent Youth Foundation of Lanzhou University of Technology,China(Grant No.0910ZXC082)

摘　　要：Both linear and nonlinear excitation in dusty plasmas have been investigated including the nonadiabatic dust charge fluctuation and Gaussian size distribution dust particles. A linear dispersion relation and a Korteweg-de Vries-Burgers equation governing the dust acoustic shock waves are obtained. The relevance of the instability of wave and the wave evolution to the dust size distribution and nonadiabatic dust charge fluctuation is illustrated both analytically and numerically. The numerical results show that the Gaussian size distribution of dust particles and the nonadiabatic dust charge fluctuation have strong common influence on the propagation of both linear and nonlinear excitations.Both linear and nonlinear excitation in dusty plasmas have been investigated including the nonadiabatic dust charge fluctuation and Gaussian size distribution dust particles. A linear dispersion relation and a Korteweg-de Vries-Burgers equation governing the dust acoustic shock waves are obtained. The relevance of the instability of wave and the wave evolution to the dust size distribution and nonadiabatic dust charge fluctuation is illustrated both analytically and numerically. The numerical results show that the Gaussian size distribution of dust particles and the nonadiabatic dust charge fluctuation have strong common influence on the propagation of both linear and nonlinear excitations.

关 键 词：dusty plasmas nonadiabatic dust charge fluctuation dust size distribution 

分 类 号：O53[理学—等离子体物理] TM27[理学—物理]