Comment on `Propagation of solitary waves and shock wavelength in the pair plasma (J. Plasma Phys. 78, 525-529, 2012)'
Abstract
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.
- Publication:
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Journal of Plasma Physics
- Pub Date:
- March 2014
- DOI:
- Bibcode:
- 2014JPlPh..80..513V