Propagation of Ion Acoustic Solitons Around the Critical Values in Weakly Relativistic Unmagnetized Plasmas Having Nonthermal Distributed Electrons and Positrons
摘要
In this article, an unmagnetized relativistic plasma consisting of relativistic warm ion fluids and nonthermal electrons as well as positrons is considered to report the nonlinear propagation characteristics of ion acoustic solitons (IASs) around the critical values (CVs) of a specific plasma parameter. To do so, the modified Korteweg-de Vries equation (mKdVE) involving electrostatic potential along with the existence of CVs is derived. With the consideration of parametric values of the plasma parameters within the proper ranges, the effects of parameters on the nonlinear electrostatic soliton propagation around CVs are reported.