“…Here, we concentrate on liquid specimens, which were first single shocked to 29 GPa and double-shocked to 56 GPa by Schott [12], then single shocked to 71 GPa by Nellis et al [13] using a two-stage light-gas gun. Theoretically, intermolecular potential method was applied to study the EOS of CO 2 under dynamic compressions, where the onset of decomposition was reported to be around 30 GPa (4500 K, 17 cm 3 /mol) along the Hugoniot [13]. Despite that the predicted EOS were in accord with experimental data, the electronic structure, which has been proved to be important in determining the dynamical, electrical, and optical properties of molecular fluids under extreme conditions [14][15][16], is still lacking due to the intrinsic approximations of this method.…”