含有非热力学平衡离子和尘埃颗粒电荷变化的热尘埃等离子体中的尘埃声波

Dust-acoustic waves in hot dust plasma with non-thermal ions and variable dust charges

使用约化摄动法得到了描述含有尘埃颗粒电荷变化、非热力学平衡离子和玻尔兹曼分布的电子的热尘埃等离子体中尘埃声波修正的KdV(mKdV)方程.并对孤立波受尘埃流体、离子和电子的温度,非热力学平衡快离子参数,尘埃电荷变化以及尘埃颗粒、离子和电子数密度的影响进行了数值模似.

Using the reductive perturbation method, a modified KdV （mKdV） equation is obtained, which describes the dust acoustic waves in a hot dust plasma with dust charge variation, non-thermal distributed ions and Boltzmann distributed electrons. The properties of these solitary structures depending on the temperatures of dust grains, ions and electrons, the number of fast ions, the dust charge variation and the number densities of ions and electrons are shown in this paper numerically.