Nonlinear kinetic estimate of Raman reflectivity in a hohlraum plasma with a radiation hydrodynamics code

D Bénisti; O Morice; C Rousseaux; A Debayle; P E Masson-Laborde; P Loiseau

doi:10.1103/PhysRevE.109.L043201

Nonlinear kinetic estimate of Raman reflectivity in a hohlraum plasma with a radiation hydrodynamics code

Phys Rev E. 2024 Apr;109(4):L043201. doi: 10.1103/PhysRevE.109.L043201.

Authors

D Bénisti^{1

2}, O Morice¹, C Rousseaux¹, A Debayle^{1

2}, P E Masson-Laborde^{1

2}, P Loiseau^{1

2}

Affiliations

¹ CEA, DAM, DIF, F-91297 Arpajon, France.
² Université Paris-Saclay, CEA, LMCE, F-91680 Bruyères-le-Châtel, France.

PMID: 38755812
DOI: 10.1103/PhysRevE.109.L043201

Abstract

In this Letter, we introduce an inline 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'Intégration Laser. From these comparisons, we discuss the PIEM ability to correctly catch the impact of nonlinear kinetic effects on SRS.