Effects of Slow Mode Phase Velocity on Non-Linear Wave Structures in Two-Temperature Non-Isothermal Plasma
DOI:
https://doi.org/10.15407/ujpe71.6.505Keywords:
slow mode and fast mode phase velocity, non-isothermal plasma, Sagdeev pseudopotential, slow mode compressive solitons and double layersAbstract
In a collisionless, unmagnetized and non-relativistic plasma consisting of warm adiabatic positive and negative ions, warm isothermal positrons and two-temperature non-isothermal electrons, slow mode non-linear wave structures are investigated by the Sagdeev pseudopotential method. The “dispersion relation” is derived from the basic set of normalized fluid equations under the condition of solitary wave solutions and the slow mode phase velocity (VS) is then obtained analytically. The effect of the normalized phase velocity (VS) on large amplitude slow mode solitons and small amplitude slow mode double layers is comprehensively analyzed using the profiles of the Sagdeev potential function ψ(ϕ), first- (ϕ1) and second-order (ϕ2) solitarywave solutions and the double layer solutions ϕDL in a two-temperature non-isothermal electron plasma.
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