多组分复杂等离子体中(3+1)维非线性离子声孤波的研究  

The study of (3+1)-dimensional nonlinear ion acoustic solitary waves in multi-component plasma

作　　者：林麦麦[1] 龚雪 段文山[1] 杜海粟 LIN Mai-mai;GONG Xue;DUAN Wen-shan;DU Hai-su(College of Physics and Electronic Engineering,Northwest Normal University,Lanzhou,730070, 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）》2019年第1期44-49,共6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：研究了在多组分复杂等离子体中(3+1)维非线性离子声孤波的基本传播特性.利用约化摄动方法,推导得到用来描述多组分复杂等离子体中(3+1)维非线性离子声孤波的ZK方程.此外,借助数值模拟的方法分析了原有等离子体系统中的不同参数对非线性离子声孤波的非线性强度、振幅、宽度等传播特性的重要影响.In this paper,the basic propagating characteristics of (3+1)-dimensional nonlinear ion acoustic solitary waves in a multi-component complex plasma have been studied.The (3+1)-dimensional ZK equation for nonlinear ion acoustic solitary waves in a multi-component complex plasma system has been obtained by using the reductive perturbation method.Moreover,the important influence of different parameters on the nonlinear strength,amplitude,width and propagation characteristics of nonlinear ion acoustic solitary waves are also discussed by the numerical simulation method.

关 键 词：多组分复杂等离子体 约化摄动法 离子声孤波 

分 类 号：O53[理学—等离子体物理]