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.

中文翻译：

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通过双重冲击压缩到 60–79 GPa 压力的水的亮度温度

提供了关于水冲击压缩至 79 GPa 的温度的新数据。在 28-36 GPa 的入射波强度范围内记录了来自由入射冲击波和从氟化锂或蓝宝石窗口反射的冲击波压缩的水层的热辐射。反射波压力在 49-79 GPa 的范围内。在 79 GPa 压力下测得的温度为 2750 K，远低于该压力下的单次冲击温度 - 5270 K。估计了界面处的辐射通量损失。利用状态方程模型计算了1次和2次冲击波压缩水的温度，计算结果与实验数据吻合较好。