Precision EOS measurements on NIF ablators

The high-pressure ($>$ 1 Mbar) behavior of hydrocarbons is essential for understanding inertial-confinement-fusion target ablators. In particular, one design for NIF ignition targets calls for glow-discharge-polymer (GDP) ($CH_{1.3}O_{0.02}$) with various level of germanium doping (Ge-GDP). We report on EOS measurements on GDP and Ge-GDP driven to shock pressures $\sim$ 1-10 Mbar, presenting the first high-pressure measurements for both materials. Experiments used laser driven shock waves to drive impedance match measurements with quartz standard. Shock velocities were measured using VISAR, determining shock velocities with an uncertainty of $\sim$ 1\% precision in these transparent materials.