The Effects of Inhomogeneity and Adiabatic Dusty Charge Fluctuation on Solitary Waves  

作　　者：马栋林 张玺君 张丽萍 

机构地区：[1]College of Computer and Communication, Lanzhou University of Technology [2]School of Science, Lanzhou University of Technology

出　　处：《Plasma Science and Technology》2013年第1期7-11,共5页等离子体科学和技术（英文版）

基　　金：supported by National Natural Science Foundation of China (No. 10975114);the Science-Technology Foundation of Gansu Province(1014RJZA017);the Prominent Youth Foundation of LUT (No. 0910ZXC082)

摘　　要：Using the perturbation method, the modified variable coefficient Kadomtsev- Petviashvili （MKP） equation governing nonlinear （lust acoustic solitary waves is for the first time derived with the combined effects of adiabatic dust charge fluctuation and higher-order transverse perturbation in inhomogeneous dusty plasmas due to the spatial gradients of dust charge and plasma densities. The MKP equation is reduced to the standard Kadomtsev-Petviashvili （KP） equation. The numerical results show that inhomogeneity has strong influence on the nonlinear properties of dust acoustic solitary waves.Using the perturbation method, the modified variable coefficient Kadomtsev- Petviashvili （MKP） equation governing nonlinear （lust acoustic solitary waves is for the first time derived with the combined effects of adiabatic dust charge fluctuation and higher-order transverse perturbation in inhomogeneous dusty plasmas due to the spatial gradients of dust charge and plasma densities. The MKP equation is reduced to the standard Kadomtsev-Petviashvili （KP） equation. The numerical results show that inhomogeneity has strong influence on the nonlinear properties of dust acoustic solitary waves.

关 键 词：solitary waves nonuniform dusty plasmas dust charge fluctuation Kadomtsev-Petviashvili equation 

分 类 号：O53[理学—等离子体物理]