LAUSR

New data on the temperature of water shock-compressed to 79 GPa are presented. Thermal radiation from a water layer compressed by incident shock waves and shock waves reflected from a lithium fluoride or sapphire window was recorded in the range of incident-wave intensity of 28–36 GPa. The reflected-wave pressures were in the range of 49–79 GPa. The temperature measured at the pressure of 79 GPa was 2750 K, which is much lower than the single-shock temperature at this pressure—5270 K. The radiant flux loss at the interfaces was estimated. The temperature of water compressed by one and two shock waves was calculated using an equation of state model, and the calculation results are in good agreement with the experimental data.