title: Nonlinear Landau damping rate of a driven plasma wave.
abstract: In this Letter, we discuss the concept of the nonlinear Landau damping rate, nu, of a driven electron plasma wave, and provide a very simple, practical formula for nu, which agrees very well with results inferred from Vlasov simulations of stimulated Raman scattering. nu actually is more complicated an operator than a plain damping rate, and it may only be seen as such because it assumes almost constant values before abruptly dropping to 0. The decrease of nu to 0 is moreover shown to occur later when the wave amplitude varies in the direction transverse to its propagation.
authors.affiliation: CEA, DAM, DIF 91297 Arpajon Cedex, France. didier.benisti@cea.fr
authors.forename: Didier
authors.initials: D
authors.lastname: Bénisti
authors.forename: David J
authors.initials: DJ
authors.lastname: Strozzi
authors.forename: Laurent
authors.initials: L
authors.lastname: Gremillet
authors.forename: Olivier
authors.initials: O
authors.lastname: Morice