Expansion of a radial plasma blast shell into an ambient plasma

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    The expansion of a radial blast shell into an ambient plasma is modeled with a particle-in-cell simulation. The unmagnetized plasma consists of electrons and protons. The formation and evolution of an electrostatic shock is observed, which is trailed by ion-acoustic solitary waves that grow on the beam of the blast shell ions in the post-shock plasma. In spite of the initially radial symmetric outflow, the solitary waves become twisted and entangled and, hence, they break the radial symmetry of the flow. The waves and their interaction with the shocked ambient ions slow down the blast shell protons and bring the post-shock plasma closer to equilibrium.



    Original languageEnglish
    Article number094501
    JournalPhysics of Plasmas
    Journal publication date01 Sep 2017
    Issue number9
    Publication statusPublished - 01 Sep 2017

    ID: 135318797