Plasma and Fusion Research
Volume 5, 045 (2010)
Regular Articles
- Department of Physics, Faculty of Sciences, Azarbaijan University of Tarbiat Moallem, 51745-406, Tabriz, Iran
Abstract
Arbitrary amplitude ion-acoustic solitary waves (IASWs) are studied using Sagdeev-Potential approach in electron-positron-ion plasma with ultra-relativistic or non-relativistic degenerate electrons and positrons and the matching criteria of existence of such solitary waves are numerically investigated. It has been shown that the relativistic degeneracy of electrons and positrons has significant effects on the amplitude and the Mach-number range of IASWs. Also it is remarked that only compressive IASWs can propagate in both non-relativistic and ultra-relativistic degenerate plasmas.
Keywords
Sagdeev-potential, ion-acoustic soliton, degenerate plasma, relativistic plasma, Fermi statistics
Full Text
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This paper may be cited as follows:
Abdolrasoul ESFANDYARI-KALEJAHI, Massoud AKBARI-MOGHANJOUGHI and Ehsan SABERIAN, Plasma Fusion Res. 5, 045 (2010).