Modulation Instability of Ion-Acoustic Waves in Plasma with Nonthermal Electrons | Zendy

Basudev Ghosh | Zendy; Sreyasi Banerjee | Zendy

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Modulation Instability of Ion-Acoustic Waves in Plasma with Nonthermal Electrons

Author(s) -

Basudev Ghosh,

Sreyasi Banerjee

Publication year - 2014

Publication title -

journal of astrophysics

Language(s) - English

Resource type - Journals

eISSN - 2356-718X

pISSN - 2314-6192

DOI - 10.1155/2014/785670

Subject(s) - modulational instability , physics , electron , ion , plasma , instability , atomic physics , ion acoustic wave , envelope (radar) , acoustic wave , two stream instability , quantum electrodynamics , quantum mechanics , telecommunications , radar , computer science

Modulational instability of ion-acoustic waves has been theoretically investigated in an unmagnetized collisionless plasma with nonthermal electrons, Boltzmann positrons, and warm positive ions. To describe the nonlinear evolution of the wave amplitude a nonlinear Schrödinger (NLS) equation has been derived by using multiple scale perturbation technique. The nonthermal parameter, positron concentration, and ion temperature are shown to play significant role in the modulational instability of ion-acoustic waves and the formation of envelope solitons

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