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期刊论文

Experimental observation of ion-acoustic waves in an inhomogeneous dusty plasma

郑坚Xiaoping Liang Jian Zheng J. X. Maa) W. D. Liu Jinlin Xie Ge Zhuang and C. X. Yu

Phys. Plasmas, Vol. 8, No.5, May 2001,-0001,():

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摘要/描述

The propagation of a dust-ion-acoustic wave (DIAW) wave down the steep density gradient in an inhomogeneous diffusive dusty plasma is experimentally studied. It is observed that the presence of the dust enhances the plasma inhomogeneity. The phase velocity of the DIAW increases rapidly with distance and becomes supersonic. The interplay between the effects of the density nonuniformity and collisional damping results in the continuous transition of the relative amplitude of the DIAW from damping to growth. The experimental data are in agreement with theoretical prediction and confirm the importance of density-dependent ion-dust collisions.

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版权说明:以下全部内容由郑坚上传于   2005年07月11日 17时36分59秒,版权归本人所有。

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