Cylindrical and spherical ion-acoustic solitary waves with dissipative effect

被引：47
|
作者：
Xue, JK [1 ]
机构：
[1] NW Normal Univ, Phys & Elect Engn Coll, Lanzhou 730070, Peoples R China
来源：
PHYSICS LETTERS A | 2004年 / 322卷 / 3-4期
基金：
中国国家自然科学基金;
关键词：
cylindrical and spherical ion-acoustic solitary waves; dissipative cylindrical/spherical KdV equation;
D O I：
10.1016/j.physleta.2004.01.018
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The combined effects of bounded nonplanar geometry and ion fluid viscosity on ion-acoustic solitary wave (IASW) in an unmagnetized plasma is investigated for the first time. By using the standard reductive perturbation method, a dissipative cylindrical/spherical Korteweg-de Vries (KdV) equation is obtained. The changing law of IASW amplitude due to the geometry and dissipation effects is deduced analytically in two limiting cases when the geometry effect is much stronger and weaker. The analytically results are also verified by numerical calculation of the fully dissipative cylindrical/spherical KdV equation. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：225 / 230
页数：6
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