Abstract
The self-modulation of a linearly polarized electromagnetic wave propagating in a non-Maxwellian plasma is investigated. The plasma electrons (ions) obey a κ distribution function, which has been proved to be appropriate for modeling nonthermal distributions. The fluid model is used to describe the plasma dynamics, and a multiscale perturbation analysis is carried out to obtain the nonlinear Schrödinger equation governing the modulation of the high-frequency field. The effect of superthermal particles on the modulation of the wave and soliton formation is discussed.
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