A nonlinear Zakharov-Kuznetsov equation in magnetized plasma with q-nonextensive electrons velocity distribution

作者：Bains A S^*; Tribeche Mouloud; Saini N S; Gill T S

来源：Physics of Plasmas, 2011, 18(10): 104503.

DOI：10.1063/1.3642610

• perturbation theory
• plasma ion acoustic waves
• plasma magnetohydrodynamics
• plasma solitons
• plasma transport processes

By using the reductive perturbation method (RPM), a nonlinear Zakharov-Kuznetsov (ZK) equation for ion-acoustic solitary waves (IASWs) is derived for a magnetized plasma in which the electrons are nonextensively distributed. The combined effects of electron nonextensivity, strength of magnetic field, and obliqueness on the ion acoustic (IA) solitary profile are analyzed. Three different ranges of the nonextensive q-parameter are considered. It is observed that the system may support both compressive as well as rarefactive solitons. The magnetic field has no effect on the amplitude of solitary waves whereas the obliqueness affects both the amplitude as well as the width of the solitary wave structures.

• 出版日期2011-10