Electron kinetic effects in the nonlinear evolution of a driven ion-acoustic wave

C. Riconda*, A. Heron, D. Pesme, S. Hüller, V. T. Tikhonchuk, F. Detering

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)

Abstract

The electron kinetic effects are shown to play an important role in the nonlinear evolution of a driven ion-acoustic wave. The numerical simulation results obtained (i) with a hybrid code, in which the electrons behave as a fluid and the ions are described along the particle-in-cell (PIC) method, are compared with those obtained (ii) with a full-PIC code, in which the kinetic effects on both species are retained. The electron kinetic effects interplay with the usual fluid-type nonlinearity to give rise to a broadband spectrum of ion-acoustic waves saturated at a low level, even in the case of a strong excitation. This low asymptotic level might solve the long-standing problem of the small stimulated Brillouin scattering reflectivity observed in laser-plasma interaction experiments.

Original languageEnglish
Article number055003
Pages (from-to)1-4
Number of pages4
JournalPhysical Review Letters
Volume94
Issue number5
DOIs
Publication statusPublished - 11 Feb 2005
Externally publishedYes

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