Shock Hugoniot Data for Water up to 5 Mbar Obtained with Quartz Standard at High-Energy Laser Facilities

Figure 3

graphical construction of the impedance mismatch procedure for the highest pressure shot of the quartz standard. The shocked state of H₂O is constrained to remain on the incident Rayleigh line (blue dashed line) defined for for this case. The solid red and dashed lines are the Hugoniot and the Rayleigh line of (SiO₂), respectively, associated with the release curve calculated for . The crossing of the Rayleigh line with the release isentrope path (blue square) determines the IM point and provides the experimental value of which may or may not lay on the shock polar for water, i.e., may (or may not) be in agreement with the used theoretical EOS.