尘粒电荷变化的尘埃等离子体中的MKP方程

The MKP Equation in dust Plasma with 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的二维尘埃声波的Modified KP(MKP)方程.数值模拟结果表明,诸多等离子体参数,如快离子数,尘埃电荷变化、尘埃流体、离子和电子的温度,以及离子的数密度等均会影响和改变孤波的振幅和宽度.

Using the reductive perturbation method,we obtain a modified KP（MKP） equation describing the two-dimensional dust-acoustic waves in a hot dust plasma with dust charge variation,non-thermal distributed ions and Boltzmann distributed electrons.Results shows that plasma parameters such as the number of fast ions,the dust charge variation,the temperatures of dust grains,ions and electrons,and the number densities of ions,can influence and change the amplitude and width of the solitons.