中国物理B ›› 2004, Vol. 13 ›› Issue (1): 60-64.doi: 10.1088/1009-1963/13/1/012
• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇 下一篇
薛具奎, 郎和
Xue Ju-Kui (薛具奎), Lang He (郎和)
摘要: The propagation of three-dimensional nonlinear dust-acoustic and dust-Coulomb waves in unmagnetized/magnetized dusty plasmas consisting of electrons, ions, and charged dust particles is investigated. The grain charge fluctuation effect is also incorporated through the current balance equation. By using the perturbation method, a Kadomtsev-Petviashvili equation and a Zakharov-Kuznetsov equation governing the nonlinear waves in the unmagnetized and magnetized systems are obtained respectively. It has been shown that with the combined effects of grain charge fluctuation, the transverse perturbation, and the external magnetic field would modify the wave structures. Waves in those systems are unstable to the high-order long-wave perturbations.
中图分类号: (Electrostatic waves and oscillations (e.g., ion-acoustic waves))