Head-on collision of ion thermal waves in a magnetized pair-ion plasma containing charged dust impurities

Abstract

This article presents the first study of the head-on collision between two ion thermal waves in a two-fluid (i.e., a pair-ion) magnetized plasma consisting of positive and negative ions, as well as a fraction of stationary charged dust impurities, using the extended Poincaré–Lighthill–Kuo method. The effects of the external magnetic field, the concentration of charged dust impurities, and the positive ion to negative ion temperature ratio on the solitary wave collisions are investigated. It is found that these factors significantly modify the phase shift.