Electron-acoustic vortices in multicomponent magnetoplasma

Haque, Q.; Mirza, Arshad M.; Nargis, Shahida
May 2010
Physics of Plasmas;May2010, Vol. 17 Issue 5, p054505
Academic Journal
Linear and nonlinear properties of electron-acoustic waves in a multicomponent magnetoplasma comprising of cold and beam electrons and two species of thermal unmagnetized ions are investigated here. It is found that the electron beam velocity, electron Debye length, electron Larmor radius, and concentration of the cold and beam electrons affect the linear dispersion characteristics of electron-acoustic wave. It is also found that such a multicomponent plasma admits dipolar and vortex street type structures for the normalized electrostatic potential [uppercase_phi_synonym]<1. The relevance of this investigation in laboratory as well as in space plasmas such as in auroral region, geomagnetic tail, etc. is also pointed out.


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