Relativistic Degeneracy Effect on Propagation of Arbitrary Amplitude Ion-Acoustic Solitons in Thomas-Fermi Plasmas

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 investigat...

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Bibliographic Details
Published in:Plasma and Fusion Research 2010/11/25, Vol.5, pp.045-045
Main Authors: ESFANDYARI-KALEJAHI, Abdolrasoul, AKBARI-MOGHANJOUGHI, Massoud, SABERIAN, Ehsan
Format: Article
Language:English
Subjects:
degenerate plasma
Fermi statistics
ion-acoustic soliton
relativistic plasma
Sagdeev-potential
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Summary: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.
ISSN:1880-6821
1880-6821
DOI:10.1585/pfr.5.045