多组分复杂等离子体中(2+1)维非线性离子声孤波的传播特性研究  

The(2+1)dimensional nonlinear ion acoustic solitary waves in multi-component plasma

作　　者：林麦麦[1] 宋秋影 文惠珊 于腾萱 蒋蕾 LIN Mai-mai;SONG Qiu-ying;WEN Hui-shan;YU Teng-xuan;JIANG Lei(College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730030,Gansu,China)

机构地区：[1]西北师范大学物理与电子工程学院,甘肃兰州730070

出　　处：《西北师范大学学报（自然科学版）》2021年第2期33-40,共8页Journal of Northwest Normal University(Natural Science)

基　　金：国家自然科学基金资助项目(11205124,11565022,11365020)。

摘　　要：研究了复杂等离子体中(2+1)维非线性离子声孤波的传播特性.应用约化摄动法推导得到了用来描述含有非广延电子-正电子分布的多组分尘埃等离子体中(2+1)维非线性离子声孤波的Kadomtsev-Petviashvili(KP)方程.获得了非线性离子声孤波的非线性强度、振幅与宽度等传播特性随系统参数的变化规律,明确了系统参数对(2+1)维非线性离子声孤波传播特征的重要影响.In this paper,the basic propagation characteristics of(2+1)dimensional nonlinear ion acoustic solitary waves in a multi-component complex plasma have been studied.The KP equation of(2+1)dimensional nonlinear ion acoustic solitary waves in a multi-component dusty plasma with a non-extensive-electron-positron distribution are studied by using the reduced perturbation method.By using mathematical software effectively,the variation of nonlinear intensity,amplitude and width of nonlinear ion acoustic solitary wave with system parameters are obtained,and the important influence of system parameters on the propagation characteristics of(2+1)dimensional nonlinear ion acoustic solitary waves are clarified.

关 键 词：尘埃等离子体 非线性离子声孤波 约化摄动法 KP方程 

分 类 号：O53[理学—等离子体物理]