Note on rarefactive and compressive ion-acoustic solitons in a plasma containing two ion species

Author(s): McKenzie JF, Verheest F, Doyle TB, Hellberg MA

Abstract

In a recent article the conditions for the existence of solitons in a plasma containing two ion species were analyzed within the framework of a fully nonlinear treatment. In particular, an upper limit for the critical collective Mach number (above which rarefactive solitons cease to exist) was obtained from the requirement that a charge neutral point in the rarefactive regime must be formed before the electron density, 

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