Nonlinear acoustic waves in a collisional self-gravitating dusty plasma

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2010 Chinese Physical Society and IOP Publishing Ltd
, , Citation Guo Zhi-Rong et al 2010 Chinese Phys. B 19 115203 DOI 10.1088/1674-1056/19/11/115203

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1 Key Laboratory of Ecophysics and Department of Physics, Teachers College, Shihezi University, Shihezi 832003, China

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  1. Received 1 April 2009
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1674-1056/19/11/115203

Abstract

Using the reductive perturbation method, we investigate the small amplitude nonlinear acoustic wave in a collisional self-gravitating dusty plasma. The result shows that the small amplitude dust acoustic wave can be expressed by a modified Korteweg-de Vries equation, and the nonlinear wave is instable because of the collisions between the neutral gas molecules and the charged particles.

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