复杂热等离子体中(2+1)维非线性离子声孤波的特性研究  

The(2+1)dimensional nonlinear ion acoustic solitary waves in a complex hot plasma

作　　者：林麦麦[1] 于腾萱 文惠珊 宋秋影 LIN Mai-mai;YU Teng-xuan;WEN Hui-shan;SONG Qiu-ying(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）》2020年第4期43-48,56,共7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：应用约化摄动法研究了复杂热等离子体中(2+1)维非线性离子声孤波的基本传播特性,得到了用来描述(2+1)维非线性离子声孤波的Kadomtsev-Petviashvili(KP)方程.并利用数值模拟方法,分析了KP方程的各个系数及其孤立波解受到原有等离子体系统中不同参数的影响.In this paper,the basic propagation characteristics of(2+1)dimensional nonlinear ion acoustic solitary waves in a complex hot plasma are studied by using the reductive perturbation method.The KP equation of(2+1)dimensional nonlinear ion acoustic solitary waves has been obtained.By means of numerical simulation,it is analyzed that the coefficients of KP equation and the solitary wave solutions are affected by different parameters of the original plasma system.

关 键 词：复杂热等离子体 约化摄动法 离子声孤波 KP方程 

分 类 号：O53[理学—等离子体物理]