Equation-of-State Measurements of Porous Materials on OMEGA: Numerical Modeling

LLE Review, Volume 90 57 Introduction The equation of state (EOS) of materials at high densities and pressures is of wide interest to inertial confinement fusion (ICF), planetary physics, and astrophysics. The EOS at these conditions often involves a mixture of atomic, ionic, and molecular species, making ab initio theoretical modeling prohibitive. Experiments to constrain EOS models have been performed using static methods such as diamond-anvil cells1 and at higher pressures using dynamic methods, such as shocks generated by light-gas guns,2 lasers,3 and even nuclear explosions.4,5 Of these methods, laser-driven shocks currently provide the best method available for not only accessing the high pressures of interest, but performing accurate measurements necessary to determine the EOS.