On the influence of opacity variation on spatial structure of radiative shocks

TL;DR

This paper analyzes how variations in opacity with temperature and photon energy affect the spatial structure of radiative shocks, aiming to understand observed precursor features.

Contribution

It introduces a theoretical framework emphasizing the importance of multigroup processing and refined opacities for modeling radiative shock precursors.

Findings

Opacity variation significantly influences shock structure.

Multigroup processing improves precursor modeling.

Refined low-temperature opacities are essential.

Abstract

We provide a theoretical analysis of Radiative Shocks, defined as supercritical shocks accompanied by an ionization wave in front of the density jump. In particular, we look at the influence of opacity variation with temperature and photon energy on spatial structure of radiative shocks, with a view to understanding a split precursor feature observed in recent experiments. We show that multigroup processing, a more refined angular description and improved low temperature opacities are needed to explore the radiative precursor structure, at least in some temperature regimes where rapid change of ionization can be found.