Nonplanar ion-acoustic Gardner solitons in a pair-ion plasma with nonextensive electrons and positrons |
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Authors: | Uday Narayan Ghosh Deb Kumar Ghosh Prasanta Chatterjee Mustapha Bacha Mouloud Tribeche |
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Institution: | 1. Department of Mathematics, Siksha Bhavana, Visva Bharati University, Santiniketan, 731235, India 2. Theoretical Physics Laboratory, Plasma Physics Group, Faculty of Sciences-Physics, University of Bab-Ezzouar, USTHB, BP 32, El Alia, Algiers, 16111, Algeria
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Abstract: | The properties of nonplanar (cylindrical and spherical) ion-acoustic solitary waves (IA SWs) in an unmagnetized, collisionless electron-positron-ion (e-p-i) plasma, whose constituents are q-distributed electrons and positrons and inertial ions, are investigated by deriving the modified Gardner (MG) equation. The well known reductive perturbation method is employed to derive the MG equation. The basic features of nonplanar IA Gardner solitons (GSs) are discussed. It is found that the properties of nonplanar IA GSs (rarefactive and compressive) are significantly affected by the particle nonextensivity. |
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