Effects of Kappa-Distributed Electrons on Ion-Acoustic Shock Waves in an e-p-i Plasma in Non-Planar Geometry

Abstract

Ion-acoustic (IA) shock wave in an unmagnitized plasma
consisting of electrons, positrons and ions in non-planar geometry has
been investigated by employing reductive perturbation technique. In this
study, kappa-distributed electrons and Boltzmann distributed positrons
are considered, and a modified Burgers' equation is derived. The equation
is numerically solved to get the shock wave and it is observed that the
basic features of the waves are modified due to the non-planar geometry.
It is found that the heights of the developed shock waves are different for
different geometries and in both cases the potential of the wave is
negative.