 |
 |
 |
 |
|
|
|
|
| HAL : hal-00524427, version 1 |
| DOI : 10.1063/1.2749715 |
| Fiche détaillée |  Récupérer au format |
 |
| Physics of Plasmas 14, 7 (2007) 072704 |
|
|
|
|
| Saturation process induced by vortex-merging in numerical Vlasov-Maxwell experiments of stimulated Raman backscattering |
|
|
| M. Albrecht-Marc 1Alain Ghizzo 1, 2 |
|
|
| CALVI Collaboration(s) |
|
|
| (07/2007) |
|
|
|
| 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 : | Physique des milieux ionisés et applications (LPMIA) |
|
|
|
CNRS : UMR7040 – Université Henri Poincaré - Nancy I |
|
|
| 2 : | CALVI (INRIA Nancy - Grand Est / IECN / LSIIT / IRMA) |
|
|
|
CNRS : UMR7005 – INRIA – Université de Strasbourg – Université de Lorraine |
|
|
| 3 : | INRS Québec |
|
|
|
INRS Québec |
|
|
|
|
|
|
|
|
|
| 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 : Del Sarto Daniele | |
| Soumis le : Jeudi 7 Octobre 2010, 20:06:59 | |
| Dernière modification le : Mercredi 29 Juin 2011, 10:59:42 | |
