Ion motion can cause nonlinear electron acoustic waves in plasmas to phase-mix: A theoretical study
Sourav Pramanik,
Anubhab Biswas,
Chandan Maity
Abstract:Theoretical investigation on the space-time evolution of standing electron acoustic waves (EAWs) reveals the collisionless damping of these modes as they slowly lose phase-coherency because of phase-mixing. Finite ion inertia is the responsible factor behind phase-mixing of EAWs in an electron–ion plasma with hot and cold electrons. A simple perturbation analysis of the fluid-Maxwell's equations shows that phase-mixing can happen at arbitrary amplitudes. Our analysis also predicts the approximate time of phase… Show more
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