Study of solitary waves in e-p pair plasma: Effect of weakly relativistic species

2013 ◽  
Author(s):  
Rakhee Malik ◽  
Hitendra K. Malik ◽  
Subhash C. Kaushik
Keyword(s):  
Solitary Waves ◽  
Pair Plasma ◽  
Plasma Effect

Comment on ‘Propagation of solitary waves and shock wavelength in the pair plasma (J. Plasma Phys. 78, 525–529, 2012)’

2014 ◽  
Vol 80 (3) ◽  
pp. 513-516
Author(s):  
Frank Verheest
Keyword(s):  
Shock Wave ◽  
Solitary Wave ◽  
Solitary Waves ◽  
Plasma Phys ◽  
Theoretical Underpinning ◽  
Pair Plasma ◽  
Electrons And Positrons ◽  
Small Dissipation ◽  
Pseudopotential Approach ◽  
Wave Properties

In a recent paper ‘Propagation of solitary waves and shock wavelength in the pair plasma (J. Plasma Phys. 78, 525–529, 2012)’, Malekolkalami and Mohammadi investigate nonlinear electrostatic solitary waves in a plasma comprising adiabatic electrons and positrons, and a stationary ion background. The paper contains two parts: First, the solitary wave properties are discussed through a pseudopotential approach, and then the influence of a small dissipation is intuitively sketched without theoretical underpinning. Small dissipation is claimed to lead to a shock wave whose wavelength is determined by linear oscillator analysis. Unfortunately, there are errors and inconsistencies in both the parts, and their combination is incoherent.

On existence of solitary waves in unmagnetized neutral hot pair plasma

2013 ◽  
Vol 20 (11) ◽  
pp. 112109 ◽  
Author(s):  
Bai-Song Xie ◽  
Zi-Liang Li ◽  
Ding Lu ◽  
Hai-Bo Sang
Keyword(s):  
Solitary Waves ◽  
Pair Plasma

Propagation of solitary waves and shock wavelength in the pair plasma

2012 ◽  
Vol 78 (5) ◽  
pp. 525-529 ◽  
Author(s):  
BEHROOZ MALEKOLKALAMI ◽  
TAIMUR MOHAMMADI
Keyword(s):  
Solitary Waves ◽  
Critical Value ◽  
Minimal Point ◽  
Sagdeev Potential ◽  
Plasma Parameters ◽  
Plasma System ◽  
Electrostatic Waves ◽  
Pair Plasma ◽  
The Media ◽  
Generate Shock Wave

AbstractThe propagation of electrostatic waves is studied in plasma system consisting of pair-ions and stationary additional ions in presence of the Sagdeev potential (pseudopotential) as function of electrostatic potential (pseudoparticle). It is remarked that both compressive and rarefective solitary waves can be propagated in this plasma system. These electrostatic solitary waves, however, cannot be propagated if the density of stationary ions increases from one critical value or decreases from another when the temperature and the Mach number are fixed. Also, when pseudoparticle is affected with a little dissipation of energy, it is trapped in potential well and can oscillate. Oscillations generate shock wave in the media, and in the negative minimal point of the well it is possible to compute numerically the shock wavelength for the allowed values of the plasma parameters.

Solitary waves on manifolds of integrate-and-fire neurons

1998 ◽  
Vol 77 (5) ◽  
pp. 1575-1583
Author(s):  
David Horn, Irit Opher
Keyword(s):  
Solitary Waves ◽  
Integrate And Fire
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