含有多种不同尘埃颗粒的等离子体中尘埃声波的调制不稳定性

Modulational Instability of Dust Acoustic Waves in a Dusty Plasma with Many Different Dust Grains

运用约化摄动法,得到了描述含有多种不同尘埃颗粒的等离子体中尘埃声波的非线性薛定谔方程(nonlin-ear Schr dinger equation),并研究了尘埃颗粒满足PLD分布时尘埃声波的调制不稳定性.

By using the reductive perturbation technique, we obtained a nonlinear Schrodinger equation for dust acoustic waves in dusty plasma with many different dust grains. The modulational instability of dust acoustic waves is also studied when the dust size distribution is given by power law distribution.