A predictive inline model for nonlinear stimulated Raman scattering in a hohlraum plasma.

The talk introduces a model for stimulated Raman scattering (SRS), which runs on our radiation hydrodynamics code TROLL. This model accounts for nonlinear kinetic effects and for the SRS feedback on the plasma hydrodynamics. We dubbed it PIEM because it is a fully “PredIctivE Model,” because no free parameter is to be adjusted a posteriori in order to match the experimental results. PIEM predictions are compared against experimental measurements performed at the Ligne d’Integration Laser. From these comparisons, we discuss the PIEM ability to correctly catch the impact of nonlinear kinetic effects on SRS.