Radiation of ion acoustic waves in a dispersive positive ion-negative ion plasma

1991 ◽  
Vol 19 (3) ◽  
pp. 545-547 ◽  
Author(s):  
J.L. Cooney ◽  
M.T. Gavin ◽  
K.E. Lonngren
Keyword(s):  
Acoustic Waves ◽  
Negative Ion ◽  
Ion Acoustic Waves ◽  
Ion Plasma ◽  
Ion Acoustic ◽  
Positive Ion

scholarly journals Effects of Positron Density and Temperature on Large Amplitude Ion-acoustic Waves in an Electron - Positron - Ion Plasma

1997 ◽  
Vol 50 (2) ◽  
pp. 309 ◽  
Author(s):  
Y. N. Nejoh
Keyword(s):  
Acoustic Waves ◽  
Large Amplitude ◽  
Density Ratio ◽  
Present Theory ◽  
Electron Mass ◽  
Mass Ratio ◽  
Ion Acoustic Waves ◽  
Ion Plasma ◽  
Electron Positron ◽  
Ion Acoustic

The nonlinear wave structures of large amplitude ion-acoustic waves are studied in a plasma with positrons. We have presented the region of existence of the ion-acoustic waves by analysing the structure of the pseudopotential. The region of existence sensitively depends on the positron to electron density ratio, the ion to electron mass ratio and the positron to electron temperature ratio. It is shown that the maximum Mach number increases as the positron temperature increases and the region of existence of the ion-acoustic waves spreads as the positron temperature increases. The present theory is applicable to analyse large amplitude ion-acoustic waves associated with positrons which may occur in space plasmas.

Oblique modulation of ion-acoustic waves and envelope solitons in electron-positron-ion plasma

2009 ◽  
Vol 16 (6) ◽  
pp. 062305 ◽  
Author(s):  
Nusrat Jehan ◽  
M. Salahuddin ◽  
Arshad M. Mirza
Keyword(s):  
Acoustic Waves ◽  
Ion Acoustic Waves ◽  
Envelope Solitons ◽  
Ion Plasma ◽  
Electron Positron ◽  
Ion Acoustic

Nonlinear Ion-Acoustic Waves in Relativistic Electron-Positron-Ion Plasma: Liner and Higher Order Nonlinear Effects

2011 ◽  
Author(s):  
M. Mehdipoor ◽  
Muhammed Hasan Aslan ◽  
Ahmet Yayuz Oral ◽  
Mehmet Özer ◽  
Süleyman Hikmet Çaglar
Keyword(s):  
Relativistic Electron ◽  
Acoustic Waves ◽  
Nonlinear Effects ◽  
Higher Order ◽  
Ion Acoustic Waves ◽  
Plasma Liner ◽  
Ion Plasma ◽  
Electron Positron ◽  
Ion Acoustic

Effect of space-time fractional on the ion acoustic waves in electron-positron-ion plasma

2014 ◽  
Vol 350 (2) ◽  
pp. 591-598 ◽  
Author(s):  
S. A. El-Wakil ◽  
Essam M. Abulwafa ◽  
A. Elgarayhi ◽  
E. K. El-Shewy ◽  
Abeer A. Mahmoud ◽  
...  
Keyword(s):  
Acoustic Waves ◽  
Space Time ◽  
Ion Acoustic Waves ◽  
Ion Plasma ◽  
Electron Positron ◽  
Ion Acoustic

Nonlinear ion–acoustic waves in an inhomogeneous plasma with non-thermal distribution of electrons

2015 ◽  
Vol 81 (3) ◽  
Author(s):  
S. V. Singh
Keyword(s):  
Boundary Layer ◽  
Acoustic Waves ◽  
Kdv Equation ◽  
Thermal Parameter ◽  
Ion Acoustic Waves ◽  
Earth’S Magnetosphere ◽  
Thermal Distribution ◽  
Ion Plasma ◽  
Ion Acoustic ◽  
Earth's Magnetosphere

In the Earth's magnetosphere, the boundary layer regions are the sources for inhomogeneous plasmas and are natural laboratories to study wave phenomena. In these regions, particles distributions also differ from Maxwellian and are found to be non-thermal. Therefore, amplitude of the waves propagating through these regions can vary differently compared to the homogeneous plasmas. In this study, propagation of ion–acoustic waves (IAWs) in an inhomogeneous, warm electron-ion plasma is examined. The electrons are considered to be having non-thermal Cairn's type distribution and ions follow the fluid dynamical equations. Further, inhomogeneity is assumed in equilibrium density of the electrons and ions. The evolution of the nonlinear IAWs is governed by the Korteweg–de Vries (KdV) equation with variable coefficients. Analytical solution of the KdV equation shows that for a cold ion plasma and non-thermal electrons, the amplitude and the width of the nonlinear IAWs decreases and increases, respectively with the inclusion of the non-thermal distribution of electrons. It is interesting to note that nonlinear IAWs in this model can not propagate for whole range of non-thermal parameter, α. The novel result of this study is that for nonlinear IAWs to propagate in the inhomogeneous two component plasma with ions and non-thermal electrons, the non-thermal parameter, α ⩽ 0.155. Results from our study may have impact on the propagation of the IAWs in the boundary layer regions of the Earth's magnetosphere where density inhomogeneities are appreciable.

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