Effects of dust size distribution on nonlinear waves in a dusty plasma |
| |
| Authors: | Chen Jian-Hong |
| |
| Affiliation: | Department of Physics, Lanzhou City University, Lanzhou 730070, China |
| |
| Abstract: | For two-dimensional unmagnetized dusty plasmas with many differentdust grain species, a Kadomtsev--Petviashvili (KP) equation, amodified KP (mKP) equation and a coupled KP(cKP) equation for small,but finite amplitude dust-acoustic solitary waves are obtained fordifferent physical conditions respectively. The influence of anarbitrary dust size distribution described by a polynomialexpressed function on the properties of dust-acoustic solitary wavesis investigated numerically. How dust size distribution affectsthe sign and the magnitude of nonlinear coefficient A (D) of KP(mKP) equation is also discussed in detail. It is noted thatwhether a compressive or a rarefactive solitary wave exists depends on the dust size distribution in some dustyplasmas. |
| |
| Keywords: | dusty plasmas solitary waves dust size distribution |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《中国物理 B》浏览原始摘要信息 |
|
点击此处可从《中国物理 B》下载免费的PDF全文 |
|
