Key to understanding supersonic radiative Marshak waves using simple models and advanced simulations

Abstract

This article studies the propagation of supersonic radiative Marshak waves. These waves are radiation dominated, and play an important role in inertial confinement fusion and in astrophysical and laboratory systems. For that reason, this phenomenon has attracted considerable experimental attention in recent decades in several different facilities. The present study integrates the various experimental results published in the literature, demonstrating a common physical base. A new simple semi-analytic model is derived and presented along with advanced radiative hydrodynamic implicit Monte Carlo direct numerical simulations, which explain the experimental results. This study identifies the main physical effects dominating the experiments, notwithstanding their different apparatuses and different physical regimes.

arXiv comment33 pages, 17 figures

References in corpus (4)

• A Configurationally-Resolved-Super-Transition-Arrays method for calculation of the spectral absorption coefficient in hot plasmas
• Full self-similar solutions of the subsonic radiative heat equations
• Modeling of Supersonic Radiative Marshak waves using Simple Models and Advanced Simulations
• Self-similar solution of the subsonic radiative heat equations using a binary equation of state

Cited by in corpus (6)

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• Effect of soft and hard x-rays on shock propagation, preheating and ablation characteristics in pure and doped Be ablators
• Asymptotic $P_N$ Approximation in Radiative Transfer Problems
• Multi-Group Discontinuous Asymptotic $P_1$ Approximation in Radiative Marshak Waves Experiments
• The Time-Dependent Asymptotic $P_N$ Approximation for the Transport Equation