• Modulational instability of ion-acoustic-waves in two electron temperature plasmas

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    • Keywords


      Modulational instability; ion-acoustic waves; nonlinear-Schrödinger equation

    • Abstract


      The envelope properties of ion-acoustic waves in a two-electron-temperature plasma are studied. The nonlinear Schrödinger equation describing the envelope of these waves is obtained from the plasma fluid equations by employing the Krylov-Bogoliubov-Mitropolsky perturbation method. It is shown that the ion-acoustic waves can be modulationally unstable or stable depending on the ratios of the densities and the temperatures of the hot and the cold electron components. Even a small fraction of the cold electron component can drastically affect the stability of the system.

    • Author Affiliations


      A S Sharma1 2 B Buti1

      1. Physical Research Laboratory, Ahmedabad - 380 009
      2. Laboratory of Plasma Studies, Cornell University, Upson Hall, Ithaca, New York - 14853, USA
    • Dates

  • Pramana – Journal of Physics | News

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