Simulation of radiative shock waves in Xe of last PALS experiments

Structure of a laser-driven radiative shock

“…This behaviour, which is also found in the computations of Cotelo et al [32], using BiGBART, is consistent with the observed modulations in the transmission in the precursor and contradicts other computations [45,46]. The theoretical post-shock transmission here is very low, contrarily to the experiment.…”

“…These simulations have been performed with the AMR ARWEN code [37]. The simulations, setup presented elsewhere ( [32]), are performed using Sn (n ¼ 4) radiation transport scheme and with 7 groups of photon energies. The opacities are calculated using BiGBART code [38].…”

Experimental study of the interaction of two laser-driven radiative shocks at the PALS laser

“…For the same laser energy, 2D simulations lead to a diminution of the shock speed compared to 1D as also to a diminution of the electron density. For instance, in the case of a shock wave launched by a laser beam at 1315 nm in Xenon at 0.3 bar at PALS and with a laser fluence of 85000 J/cm 2 , ARWEN 2D simulations give a shock speed of 44 km/s in agreement with the experimental one [30]. 1D simulation would require in this case a fluence of 30000 J/cm 2 to achieve the same.…”

2D-3D multiscale modelling of inhomogeneous plasma amplifiers

“…In this section we will explain the computational tools we use to model the amplification of HOH in plasma based soft X-ray lasers. We use ARWEN [16,17] to model the creation and subsequent hydrodynamic evolution of the plasma. The data obtained from ARWEN (electron density profile, mean ionization) is used as initial condition in Particle-In-Cell (PIC) codes to model the propagation of the intense infrared (IR) pump laser through the millimeter-sized plasma amplifier.…”