Modulational instability of electron-acoustic waves in a plasma with a q-nonextensive electron velocity distribution

2011 ◽  
Vol 375 (20) ◽  
pp. 2059-2063 ◽  
Author(s):  
Amandeep Singh Bains ◽  
Mouloud Tribeche ◽  
Tarsem Singh Gill
Keyword(s):  
Velocity Distribution ◽  
Acoustic Waves ◽  
Modulational Instability ◽  
Electron Velocity ◽  
Electron Velocity Distribution ◽  
Electron Acoustic Waves ◽  
Electron Acoustic

Planar and nonplanar electron-acoustic solitary waves in a plasma with a q-nonextensive electron velocity distribution

2014 ◽  
Vol 89 (2) ◽  
pp. 025603 ◽  
Author(s):  
Jiu-Ning Han ◽  
Jun-Xiu Li ◽  
Jun-Hua Luo ◽  
Gui-Hua Sun ◽  
Zhen-Lai Liu ◽  
...  
Keyword(s):  
Velocity Distribution ◽  
Solitary Waves ◽  
Electron Velocity ◽  
Electron Velocity Distribution ◽  
Electron Acoustic

Modulational instability of electron-acoustic waves: an application to auroral zone plasma

2006 ◽  
Vol 41 (1) ◽  
pp. 151-156 ◽  
Author(s):  
T. S. Gill ◽  
H. Kaur ◽  
S. Bansal ◽  
N. S. Saini ◽  
P. Bala
Keyword(s):  
Acoustic Waves ◽  
Modulational Instability ◽  
Auroral Zone ◽  
Electron Acoustic Waves ◽  
Electron Acoustic

Modulational instability of electron-acoustic waves in plasmas with superthermal electrons

2012 ◽  
Vol 90 (7) ◽  
pp. 661-666 ◽  
Author(s):  
Parvin Eslami ◽  
Marzieh Mottaghizadeh ◽  
Hamid Reza Pakzad
Keyword(s):  
Acoustic Waves ◽  
Modulational Instability ◽  
Perturbation Technique ◽  
Density Ratio ◽  
Wave Number ◽  
Superthermal Electrons ◽  
Electron Acoustic Waves ◽  
Instability Growth ◽  
Cold Electrons ◽  
Electron Acoustic

The propagation of electron-acoustic waves (EAWs) in plasmas composed of inertial cold electrons, hot superthermal electrons, and stationary ions is investigated. By means of the reduction perturbation technique, a nonlinear Schrödinger equation is derived and the modulation instability of EAW is analyzed, where the superthermal parameter is found to be of significant importance. It is shown that the presence of superthermal electrons enhances the critical wave number of the modulational instability of EAWs. Besides, due to the presence of the superthermal electrons, EAWs are stable on a vaster region. Moreover, the modulational instability growth rate is lower for a larger population of superthermal electrons. Further, it is shown that increasing values of the relative density ratio α = ne0/nc0 shifts the instability domain to lower values of wave number k.

Modulational Instability Of Dust Electron Acoustic Waves In Superthermal Dusty Plasmas

2011 ◽  
Author(s):  
N. S. Saini ◽  
S. Sultana ◽  
I. Kourakis ◽  
Vladimir Yu. Nosenko ◽  
Padma K. Shukla ◽  
...  
Keyword(s):  
Acoustic Waves ◽  
Modulational Instability ◽  
Dusty Plasmas ◽  
Electron Acoustic Waves ◽  
Electron Acoustic
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