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    • Keywords


      Electron–positron–ion plasma; ion-acoustic waves; superthermal electron.

    • Abstract


      Ion-acoustic shock waves (IASWs) in a homogeneous unmagnetized plasma, comprising superthermal electrons, positrons, and singly charged adiabatically hot positive ions are investigated via two-dimensional nonplanar Kadomstev–Petviashvili–Burgers (KPB) equation. It is found that the profiles of the nonlinear shock structures depend on the superthermality of electrons. The influence of other plasma parameters such as, ion kinematic viscosity and ion temperature, is discussed in the presence of superthermal electrons in nonplanar geometry. It is also seen that the IASWs propagating in cylindrical/spherical geometry with transverse perturbation will be deformed as time goes on.

    • Author Affiliations


      Deb Kumar Ghosh1 Prasantha Chatterjee1 Pankaj Kumar Mandal1 2 Biswajit Sahu3

      1. Department of Mathematics, Siksha Bhavana, Visva Bharati University, Santiniketan 731 235, India
      2. Department of Mathematics, Murshidabad Institute of Technology, Murshidabad 742 102, India
      3. Department of Mathematics, West Bengal State University, Barasat, Kolkata 700 126, India
    • Dates

  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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