Nonlinear acoustic waves in a collisional self-gravitating dusty plasma

• 来源期刊: 中国物理B（英文版）
• 关键词: nonlinear acoustic waves collisional self-gravitating dusty plasma modified Korteweg-de Vries equation instability
• 年，卷（期）: 2010,（11）
• 页码范围: 489-493
• 页数: 5页
• 语种: 英文

摘要

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.