Kinetic instability of ion acoustic mode in permeating plasmas

  • J. Vranjes
    K. U. Leuven 1 Center for Plasma Astrophysics and Leuven Mathematical Modeling and Computational Science Center (LMCC), , Celestijnenlaan 200B, 3001 Leuven, Belgium
  • S. Poedts
    K. U. Leuven 1 Center for Plasma Astrophysics and Leuven Mathematical Modeling and Computational Science Center (LMCC), , Celestijnenlaan 200B, 3001 Leuven, Belgium
  • Zahida Ehsan
    GC University 2 Salam Chair in Department of Physics, , Lahore 54000, Pakistan and Plasma Physics Group, Blackett Laboratory, , London SW7 2AZ, United Kingdom

Description

<jats:p>In plasmas with electron drift (current) relative to static ions, the ion acoustic wave is subject to the kinetic instability which takes place if the directed electron speed exceeds the ion acoustic speed. The instability threshold becomes different in the case of one quasineutral electron-ion plasma propagating through another static quasineutral (target) plasma. The threshold velocity of the propagating plasma may be well below the ion acoustic speed of the static plasma. Such a currentless instability may frequently be expected in space and astrophysical plasmas.</jats:p>

Journal

Citations (1)*help

See more

Details 詳細情報について

Report a problem

Back to top