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Recent experiments at the Omega laser facility have used ∼4.5 kJ of energy to create a blast wave similar to the one that occurs in a core-collapse supernova. In the experiment, the blast wave crosses an interface with a drop in density similar to the He–H interface in a supernova, which induces the growth of a machined perturbation on the interface surface due to the Rayleigh–Taylor instability....
Summary form only given. Shear flows arise in many high-energy-density (HED) and astrophysical systems, yet few laboratory experiments have been carried out to study their evolution in these extreme environments. Fundamentally, shear flows can initiate mixing via the Kelvin-Helmholtz (KH) instability and may eventually drive a transition to turbulence. We present two dedicated shear flow experiments...
The Center for Radiative Shock Hydrodynamics (CRASH) at the University of Michigan is a focused effort to do predictive science in the regime of radiative hydrodynamics. The current plan with CRASH is to use 2D HYADES (or H2D) to model the laser-energy-deposition portion of the experiment, before passing the results to the CRASH code to be used as its initial conditions. HYADES is a Lagrangian Radiation...
Summary form only given. Radiative shocks occur in many high-energy density explosions, but prove difficult to create in laboratory experiments or to fully model with astrophysical codes. Here we describe an experiment significant to astrophysical shocks, which produces a driven, quasi-planar radiative shock in xenon gas at 6 mg/cc. A thin, low-Z disk is driven into a cylindrical volume of xenon gas...
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