中文摘要：

报道了二级轻气炮加载条件下高分辨瞬态激光拉曼测试技术，并应用于苯的冲击拉曼光谱研究。实验观测到苯的c—c伸缩振动峰（992cm-1）和C—H伸缩振动峰（3061cm-1）在较低的压力区间（8GPa以内）其频移随压力呈线性变化。并利用拉曼光谱技术澄清了在13GPa左右液态苯的结构变化问题；在压力为9．7GPa时，液态苯已经发生结构变化，并不是文献报道的13GPa，但变化后的产物成分还不清楚。该测量系统为研究透明及半透明物质在动态加载实验中物质微观结构的变化提供一种有效手段。

英文摘要：

The present paper reports the high resolution transient Raman laser testing technology under two-stage light gas-gun loading experiment, and its application to studying the Raman spectroscopy of shocked benzene. In the experiments, the fre- quency shift of C--C stretching vibration （992 cm-1） and C--H stretching vibration peak （3 061 cm-1 ） in the low pressure sec- tion （less than 8 GPa） varies linearly with the pressure, and the results agree well with reported data in the literature. The structural changes in liquid benzene about 13 GPa were clarified firstly by the Raman spectral technique; the experimental results show that at a pressure of 9.7 GPa, the structural change of liquid benzene has taken place, not reported in the literature about 13 GPa. But the composition in the production is not clear. The measurement system provides an effective means to study the mierostructure changes of transparent and translucent material under dynamic loading experiment.