Nonlinear Propagation of Ion-Acoustic Shock Waves in Dissipative Electron-Positron-Ion Plasma with Trapped Electrons and Relativistic Ions

Ion acoustic shock waves are studied in dissipative three-component plasma. Relativistic ions, Maxwell-Boltzmann distributed positrons, nonisothermal electrons are considered in the plasma and we also consider the kinematic viscosity among the plasma constituents. The dynamics of the nonlinear wave are governed by a modified Korteweg-de Vries Burger equation that possesses dissipative Burger term. The trapping parameter (beta), the ratio of the free electron temperature to the trapped electron temperature, is treated as a variable. The effects of the coefficient of the kinematic viscosity, parameter beta and also relativistic factor on the solitary and shock waves are studied.