TITLE

Propagation and head-on collisions of ion-acoustic solitons in a Thomas–Fermi magnetoplasma: Relativistic degeneracy effects

AUTHOR(S)
Akbari-Moghanjoughi, M.
PUB. DATE
July 2010
SOURCE
Physics of Plasmas;Jul2010, Vol. 17 Issue 7, p072101
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Small amplitude propagation and quasielastic head-on collision of ion-acoustic solitary waves (IASWs) are investigated in a degenerate Thomas–Fermi electron-positron-ion magnetized plasma using extended Poincaré–Lighthill–Kuo reductive perturbation method for both ultrarelativistic and nonrelativistic electron/positron degeneracy cases. It is observed that both bright- and dark-type solitary shapes can exist in such plasma, depending on two critical values. The shape of ion-acoustic solitary structures as well as sign of their collision phase shifts are both determined by the same critical values. It is further revealed that relativistic degeneracy of electrons/positrons has significant effect on the propagation as well as interaction of IASWs.
ACCESSION #
52616118

 

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