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Nonlinear acoustic waves in a collisional self-gravitating dusty plasma |
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| Authors: | Guo Zhi-Rong Yang Zeng-Qiang Yin Bao-Xiang and Sun Mao-Zhu |
| Institution: | Key Laboratory of Ecophysics and Department of Physics, Teachers College, Shihezi University, Shihezi 832003, China;Key Laboratory of Ecophysics and Department of Physics, Teachers College, Shihezi University, Shihezi 832003, China;Key Laboratory of Ecophysics and Department of Physics, Teachers College, Shihezi University, Shihezi 832003, China;Key Laboratory of Ecophysics and Department of Physics, Teachers College, Shihezi University, Shihezi 832003, China |
| 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. |
| Keywords: | nonlinear acoustic waves collisional self-gravitating dusty plasma modified Korteweg-de Vries equation instability |
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