摘要
考虑了尘埃非绝热放电和碰撞等因素对尘埃等离子体动力学行为的影响,运用约化摄动法,得出了描述三维尘埃声激波的Korteweg-de Vries-Burgers(KdV-Burgers)方程,并运用数值积分对激波特性作了详尽地分析和说明.研究结果表明,碰撞频率、电子-离子数密度之比等因素对激波的性质有显著影响.
Taking into account the nonadiabatic dust charge fluctuation and dust grains collisions effects, 3-D dust-acoustic shock waves in a dusty plasmas is investigated analytically. By using the reductive perturbation method, the Korteweg-de Vries-Burgers（KdV-Burgers） equation governing the dust acoustic shock waves is obtained. It is shown that the dust charge variation, particle collisions with neutral gas, the temperature of ion and the ratio of electron to ion have strong influence on the nature of dust acoustic shock waves.
出处
《西北师范大学学报（自然科学版）》
CAS
北大核心
2009年第1期48-51,共4页
Journal of Northwest Normal University(Natural Science)
关键词
非绝热放电
尘埃等离子体
约化摄动法
激波
nonadiabatic variation
dusty plasmas
reductive perturbation method
shock waves
