Modeling of laser–plasma interaction on hydrodynamic scales: Physics development and comparison with experiments

S. Weber 1, 2 G. Riazuelo 2 P. Michel 2, 3 R. Loubère 4 F. Walraet 2 V. T. Tikhonchuk 1 Victor Malka 5 J. Ovadia 6 G. Bonnaud 2
1 CELIA - Centre d'Etudes Lasers Intenses et Applications
2 DPTA - Département de Physique Théorique et Appliquée
DAM/DIF - DAM Île-de-France : DAM/DIF
3 LULI - Laboratoire pour l'utilisation des lasers intenses
4 IMT - Institut de Mathématiques de Toulouse UMR5219
5 LOA - Laboratoire d'optique appliquée
6 CESTA - Centre d'études scientifiques et techniques d'Aquitaine
Abstract : The forthcoming laser installations related to inertial confinement fusion, Laser Mégajoule (LMJ) (France) and National Ignition Facility (NIF) (USA), require multidimensional numerical simulation tools for interpreting current experimental data and to perform predictive modeling for future experiments. Simulations of macroscopic plasma volumes of the order of 1 mm^3 and laser exposure times of the order of hundreds of picoseconds are necessary. We present recent developments in the PARAX code towards this goal. The laser field is treated in a standard paraxial approximation in three dimensions. The plasma response is described by single-fluid, two-temperature, fully nonlinear hydrodynamical equations in the plane transverse to the laser propagation axis. The code also accounts for the dominant nonlocal transport terms in spectral form originating from a linearized solution to the Fokker–Planck equation. The simulations of interest are hohlraum plasmas in the case of indirect drive or the plasma corona for direct drive. Recent experimental results on plasma-induced smoothing of RPP laser beams are used to validate the code.
Keywords : ICF plasmas Laser–plasma interaction Nonlocal transport Plasma-induced smoothing Transport modeling of plasmas
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Journal articles
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https://hal-polytechnique.archives-ouvertes.fr/hal-00570433
Contributor : Thuy Le <>
Submitted on : Monday, February 28, 2011 - 2:42:09 PM
Last modification on : Friday, October 25, 2019 - 1:57:54 AM

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UPMC | CNRS | CELIA | X-LOA | X-LULI | X | CEA | DSM-IRAMIS | ENSTA_LOA | ENSTA | PARISTECH | CEA-DRF | X-DEP-PHYS | DAM | UNIV-TLSE2 | IMT | SORBONNE-UNIVERSITE | UNIV-TLSE3 | SU-SCIENCES | UT1-CAPITOLE

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S. Weber, G. Riazuelo, P. Michel, R. Loubère, F. Walraet, et al.. Modeling of laser–plasma interaction on hydrodynamic scales: Physics development and comparison with experiments. Laser and Particle Beams, Cambridge University Press (CUP), 2004, 22 (2), pp.189-195. ⟨10.1017/S0263034604222157⟩. ⟨hal-00570433⟩

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