Speaker
Laurent Maurice Jacquet
Description
See the full Abstract at http://ocs.ciemat.es/EPS2018ABS/pdf/P4.2042.pdf
2D and 3D modeling of bright X-ray sources on LMJ
L. JACQUET1, M. PRIMOUT1, L. VIDEAU1
1) CEA, dam, DIF, F-91297 Arpajon, France
E-mail: laurent.jacquet@cea.fr
Multi-keV bright X-ray sources are needed for many applications as material testing and
plasma diagnostics for inertial confinement fusion. For that purpose, X-ray sources are designed
using gas-filled pipes and metallic foils. These targets are expected to be illuminated by up to 12
quads of the LaserMegaJoule facility (LMJ). Here we focus on the simulations of pipes filled
with xenon and foils made of silver. The radiative-hydrodynamics simulations are carried out
with the 2D code FCI2 [1] and the 3D code Troll. The two codes use the same physics package to
simulate radiation transfer, non-local-thermal-equilibrium atomic physics, flux-limited electron
thermal conduction and laser propagation. For several target configurations, the energy emitted in
multi-keV X-rays (with photon energies above 1 keV) is computed with FCI2 and Troll. The
comparison of 2D and 3D results enables to quantify the effect of the asymmetric feature of the
laser irradiation configuration on the X-ray fluence. Moreover, Troll provides a 3D
characterization of the X-ray emission lobes that are of particular importance for radiographic
purposes [2] and to optimize the location of samples for material testing within the LMJ
experimental chamber.
References
[1] E. Buresi et al., Laser Part. Beams 4, 531 (1986).
[2] L. Jacquet et al., High Energy Density Physics 9 (2013) 601-608.
