Presentation 1 : None
Radiative shock calculations in various media (PNPS)
Claire Michaut, L. Boireau, S. Leygnac, M. Cornille, C. Stehlé
We are modeling shocks with structures governed by their radiative precursor. At this point, we are assuming a geometrically-plan shock in an ionized gas, which behaves differently than in a perfect gas. The ionization structure and the excitation energy are calculated from the local temperatures and densities, using hydrogen-like model atoms. This approach can thus be applied to heavy elements like Xenon, which is used in the experiment of astrophysical radiative shocks with the laser of the LULI, at the École Polytechnique (France). After studying in details the shocks in Xenon, we now calculate the atomic data for multiple chemical elements as Hydrogen, Helium, Carbon which are everywhere in astrophysical objects, and as Argon, Krypton which are monoatomic gases. We thus explore the jump conditions in different media and we will try to propose a phenomenological description of the radiative shocks in the stellar objects and their envelopes.