DocumentCode :
40554
Title :
Nonplanar Ion Acoustic Solitary Waves in Electron-Positron-Ion Plasma With Warm Ions, and Electron and Positron Following Q-Nonextensive Velocity Distribution
Author :
Ghosh, D.K. ; Mandal, G. ; Chatterjee, Parag ; Ghosh, U.N.
Author_Institution :
Dept. of Math., Siksha Bhavana, Santiniketan, India
Volume :
41
Issue :
5
fYear :
2013
fDate :
May-13
Firstpage :
1600
Lastpage :
1606
Abstract :
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.
Keywords :
Korteweg-de Vries equation; numerical analysis; perturbation theory; plasma ion acoustic waves; plasma solitons; plasma transport processes; cylindrical geometry; cylindrical modified Korteweg-de Vries equations; nonlinear dynamics; nonplanar geometry; nonplanar ion acoustic solitary waves; plasma parameters; positron nonextensive parameter; q-nonextensive velocity distribution; soliton amplitude; spherical geometry; spherical modified Korteweg-de Vries equations; standard reductive perturbation method; unmagnetized collisionless electron-positron-ion plasma; warm ion fluid; Electric potential; Equations; Geometry; Mathematical model; Plasma temperature; Positrons; $q$-nonextensive distribution; Electron-positron-ion plasma; ion-acoustic solitary waves; mKdV equation; nonplanar geometry;
fLanguage :
English
Journal_Title :
Plasma Science, IEEE Transactions on
Publisher :
ieee
ISSN :
0093-3813
Type :
jour
DOI :
10.1109/TPS.2013.2255107
Filename :
6509990
Link To Document :
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