Nonplanar Ion Acoustic Solitary Waves in Electron-Positron-Ion Plasma With Warm Ions, and Electron and Positron Following q-Nonextensive Velocity Distribution

被引：26

作者：

Ghosh, Deb Kumar ^{[1
]}

Mandal, Gurudas ^{[2
]}

Chatterjee, Prasanta ^{[1
]}

Ghosh, Uday Narayan ^{[1
]}

机构：

[1] Siksha Bhavana, Dept Math, Santini Ketan 731235, W Bengal, India

[2] East West Univ, Dept Elect & Commun Engn, Dhaka 1212, Bangladesh

来源：

IEEE TRANSACTIONS ON PLASMA SCIENCE | 2013年 / 41卷 / 05期

关键词：

Electron-positron-ion plasma; ion-acoustic solitary waves; mKdV equation; nonplanar geometry; q-nonextensive distribution; ELECTROMAGNETIC-WAVES; NONLINEAR PROPAGATION; PAIR PRODUCTION; VORTICES; SYSTEMS;

D O I：

10.1109/TPS.2013.2255107

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Cylindrical and spherical modified Korteweg-de Vries equations are derived for ion-acoustic solitary waves (IASWs) in an unmagnetized, collisionless electron-positron-ion plasma consisting of warm ion fluid and q-nonextensive distributed electrons and positrons by using standard reductive perturbation method. The effects of nonplanar geometry, nonextensivity of electrons and positrons, and other plasma parameters on nonlinear dynamics of cylindrical and spherical IASWs are studied numerically. Numerical results indicate that the amplitude of the soliton is large in spherical geometry in comparison with cylindrical geometry, and both the electron and positron nonextensive parameter has a significant effect on the structure of the nonplanar IASWs.

引用

页码：1600 / 1606

页数：7

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