  Shock-bubble interactions (SBI) are important across a wide range of physical
systems. In inertial confinement fusion, interactions between laser-driven
shocks and micro-voids in both ablators and foam targets generate instabilities
that are a major obstacle in achieving ignition. Experiments imaging the
collapse of such voids at high energy densities (HED) are constrained by
spatial and temporal resolution, making simulations a vital tool in
understanding these systems. In this study, we benchmark several radiation and
thermal transport models in the xRAGE hydrodynamic code against experimental
images of a collapsing mesoscale void during the passage of a 300 GPa shock. We
also quantitatively examine the role of transport physics in the evolution of
the SBI. This allows us to understand the dynamics of the interaction at
timescales shorter than experimental imaging framerates. We find that all
radiation models examined reproduce empirical shock velocities within
experimental error. Radiation transport is found to reduce shock pressures by
providing an additional energy pathway in the ablation region, but this effect
is small ($\sim$1\% of total shock pressure). Employing a flux-limited Spitzer
model for heat conduction, we find that flux limiters between 0.03 and 0.10
produce agreement with experimental velocities, suggesting that the system is
well-within the Spitzer regime. Higher heat conduction is found to lower
temperatures in the ablated plasma and to prevent secondary shocks at the
ablation front, resulting in weaker primary shocks. Finally, we confirm that
the SBI-driven instabilities observed in the HED regime are baroclinically
driven, as in the low energy case.
