Simulating Warm Dense Matter Experiments that Probe the Multi-Phase Carbon Equation of State

Experiments on OMEGA EP allow equation of state measurements that yield the release isentrope of isochorically proton-heated samples for elements such as aluminum and carbon. These measurements can serve as benchmarks of the current state-of-the-art LEOS and SESAME equation of state models. Here we describe detailed hydrodynamic simulation efforts that characterize predictions of these EOS models for experiments on carbon (diamond) samples. 2D simulations corresponding to the experimental configuration inform our ability to interpret experimental data for signatures of EOS properties, including evolution through multi-phase liquid-vapor equilibrium along the release.

This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344.