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  • Article
  • Open Access

Kinetic effects on the parametric decays of Alfvén waves in relativistic pair plasmas

Earth, Planets and Space200658:BF03352012

  • Received: 10 November 2005
  • Accepted: 17 April 2006
  • Published:


Parametric decays of a circularly polarized wave propagating along a constant magnetic field in an electronpositron plasma are studied. Fully relativistic effects on the particle velocity in the wave field are considered, as well as kinetic effects in the parallel direction, by means of a one-dimensional relativistic Vlasov equation. In this approximation, a dispersion relation is found for the parametric decays which describes the coupling between normal modes of the system, namely electromagnetic sideband modes and Langmuir waves.

Key words

  • Parametric decays
  • Alfvén waves
  • relativistic plasma
  • electron-positron plasma