本文报道了一种用于气炮动态加载实验中的在线光散射测试技术.该实验技术具有技术简单、激发光源工作电压低、光源响应时间短、光源输出功率稳定的优点.利用该实验技术研究了水在多次冲击压缩过程中的相变行为,发现当水被冲击压缩到约2 GPa以上时,其透明性开始下降.经分析认为水的透明性下降是由水的液-固相变引起的.

This paper reports an on-line light scattering measurement technology applied to gas gun experiments.This technology has the advantages of simple technology,the excitation light source with low working voltage,short response time for light source,stable light source output power.Analysis of phase transformation behavior of water under the repeated shock compression process by the on-line experiment technology revealed that the water would have the liquid-solid phase change when it is compressed to 2 GPa in multi-shock compression.The analysis shows that the water transparency decline is caused by liquid-solid phase change of water.