The instability of dust acoustic waves in inhomogeneous dusty plasmas with non-adiabatic dust charge fluctuation  

作　　者：张丽萍 薛具奎 

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》2008年第7期2594-2599,共6页中国物理B（英文版）

基　　金：supported by the National Natural Foundation of China (Grant Nos 10475066 and 10347006)

摘　　要：This paper investigates the propagation of linear dust acoustic waves in inhomogeneous dusty plasmas due to spatial gradients of dust charge, plasma densities. A linear dispersion relation is obtained with the non-adiabatic dust charge iguctuation and the non-thermally distributed ions. The numerical results show that the inhomogeneity, nonthermal ions and non-adlabatic dust charge iguctuatlon have strong iniguence on the frequency and the damping rate of waves.This paper investigates the propagation of linear dust acoustic waves in inhomogeneous dusty plasmas due to spatial gradients of dust charge, plasma densities. A linear dispersion relation is obtained with the non-adiabatic dust charge iguctuation and the non-thermally distributed ions. The numerical results show that the inhomogeneity, nonthermal ions and non-adlabatic dust charge iguctuatlon have strong iniguence on the frequency and the damping rate of waves.

关 键 词：instability of low frequency waves INHOMOGENEITY non-adiabatic dust charge variation 

分 类 号：O53[理学—等离子体物理]