hal-00524427, version 1
Saturation process induced by vortex-merging in numerical Vlasov-Maxwell experiments of stimulated Raman backscattering
Physics of Plasmas 14, 7 (2007) 072704
Résumé : The influence of low-frequency nonlinear Bernstein-Greene-Kruskal (BGK)-type waves induced by trapped electrons in backward stimulated Raman scattering is investigated in optical mixing. Semi-Lagrangian Vlasov-Maxwell simulations show two nonlinear behaviors. First, there is a Morales-O'Neil plasma wave frequency downshift retuned by a small wavenumber shift which maintains the Stimulated Raman Scattering (SRS) resonance. The saturation of Raman backscattering begins with phase space vortex merging followed by a transition to lower wavenumbers following the (nonlinear) dispersion relation, resembling weak turbulence.
- 1 :
- CNRS : UMR7040 – Université Henri Poincaré - Nancy I
- 2 :
- CNRS : UMR7005 – INRIA – Université de Strasbourg – Université de Lorraine
- 3 :
- INRS Québec
- Collaboration : CALVI
- Domaine : Physique/Physique/Physique des plasmas
- hal-00524427, version 1
- http://hal.archives-ouvertes.fr/hal-00524427
- oai:hal.archives-ouvertes.fr:hal-00524427
- Contributeur :
- Soumis le : Jeudi 7 Octobre 2010, 20:06:59
- Dernière modification le : Mercredi 29 Juin 2011, 10:59:42
Documents associés
DOI : 10.1063/1.2749715



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