solitary waves shock waves dust charge variation dusty plasma  

作　　者：王云良 郭晓艳 李泉水 

机构地区：Department of Physics, School of Mathematics and Physics, University of Science and Technology Beijing,Beijing 100083, China

出　　处：《Communications in Theoretical Physics》2016年第2期247-253,共7页理论物理通讯（英文版）

基　　金：Supported by National Natural Science Foundation of China under Grant No.11104012; the Fundamental Research Funds for the Central Universities under Grant Nos.FRF-TP-09-019A and FRF-BR-11-031B

摘　　要：The nonlinear propagation of dust acoustic waves is investigated in four-component plasmas consisting of positively charged dust grains, trapped ions, nonthermal electrons, and photoelectron due to ultraviolet irradiation.We use generalized viscoelastic hydrodynamic model for strongly coupled dust grain. In the weak nonlinearity limit, a modified Kadomstev–Petviashvili（KP） equation and a modified KP-Burger equation, which have a damping term coming from nonadiabatic charge variation, have been derived in the kinetic regime and hydrodynamic regime, respectively. With the increasing of UV photon flux, the hydrodynamic regime changes to kinetic regime. The approximate analytical line soliton and shock solutions are investigated in the kinetic regime and hydrodynamic regime, respectively.

关 键 词：Nonlinear Dust Acoustic Waves in Strongly Coupled Dusty Plasmas with Positively Charged Dust Particles 

分 类 号：O53[理学—等离子体物理] O175.29[理学—物理]