High-pressure behavior of carbon by laser-generated shocks

We present experimental data for the carbon equation of state (EOS) at Megabar pressures obtained by laser-driven shock waves. Experiments were performed at the PALS and LULI laboratories using carbon samples with two different values of initial density in order to explore a wider region of the phase diagram. Previously unreached pressures were obtained. The results are compared with previous experiments and with available theoretical models and seem to show high compressibility of carbon at Megabar pressures.