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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: 29 June 2006


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 decaysAlfvén wavesrelativistic plasmaelectron-positron plasma