含有非热离子及尘粒电荷变化的尘埃等离子体中的KP方程  

The Kadomtsev-Petviashvili equation in dusty plasma with non-thermal ions and variable dust charge

作　　者：王红艳[1] 张开彪[1] 

机构地区：[1]四川理工学院物理系,四川自贡643000

出　　处：《安徽大学学报（自然科学版）》2008年第2期55-59,共5页Journal of Anhui University(Natural Science Edition)

基　　金：四川理工学院人才引进科研启动基金资助项目

摘　　要：使用约化摄动法得到含有非热离子、尘粒荷电变化的热尘埃等离子体中的KP方程.结果表明,非热离子分布会严重影响尘粒的电荷数.而且,高阶横向扰动的存在使得尘埃声孤波的振幅减小,而宽度增大.同时,该体系中稀疏形孤波和压缩形孤波共存.This paper derived Kadomtsev - Petviashvili KP equation from hot dusty plasma with non - thermal distributed ions and variable dust charge by reductive perturbation method. It was found that the non -thermally distributed ions could play a significant role in the determination of the normalized dust charge. Further, the amplitude of solitary waves may decrease, whereas their width increases at the presence of the higher order transverse perturbations. Meanwhile, both compressive and rarefactive solitary waves could coexist in this system.

关 键 词：KP方程 尘埃声孤波 非热离子 尘埃颗粒电荷变化 

分 类 号：O534[理学—等离子体物理]