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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/081/03/0491-0501

    • 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

       
      Published
      September 2013
      Manuscript received
      2 December 2012
      Manuscript revised
      23 February 2013
      Accepted
      30 April 2013

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