Modeling Instability Growth in Inertial Confinement Fusion Simulations

We numerically investigate the mixing behavior of Rayleigh-Taylor (RT) and Richtmyer-Meshkov (RM) instabilities during the implosion of Inertial Confinement Fusion (ICF) capsules. We emphasize the importance of accurate modeling of the RM growth as an initial seed to the RT growth. Using models to predict the mixing parameters (Prandtl, Schmidt, Reynolds), we provide estimates of the projected growth of these instabilities and discuss their impact on ignition conditions in the hot core. In addition, we discuss the impact of adding front tracking capabilities to ICF codes and their modeling of instability growth.