中国物理B ›› 2004, Vol. 13 ›› Issue (5): 598-601.doi: 10.1088/1009-1963/13/5/007
段文山
Duan Wen-Shan (段文山)
摘要: The effect of dust charging and the influence of its adiabatic variation on dust acoustic waves is investigated. By employing the reductive perturbation technique we derived a Zakharov-Kuznetsov (ZK) equation for small amplitude dust acoustic waves. We have analytically verified that there are only rarefactive solitary waves for this system. The instability region for one-dimensional solitary wave under transverse perturbations has also been obtained. The obliquely propagating solitary waves to the z-direction for the ZK equation are given in this paper as well.
中图分类号: (Dusty or complex plasmas; plasma crystals)