LiF单晶的高压折射率及窗口速度的修正

Refractive Index of LiF Single Crystal at High Pressure and Its Window Correction

通过平板撞击实验,采用激光干涉测试技术,研究了1 550nm波长下LiF单晶的高压折射率与窗口速度的修正关系,实验压力范围为38～124GPa,拓展了现有1 550nm波长下LiF单晶的高压折射率数据,给出了124GPa压力范围内1 550nm波长下LiF窗口速度的线性修正方程。研究结果可为分析冲击压缩实验中通过加窗激光多普勒探针测试技术获得的样品界面速度的数据提供参考。

By using plate impact and laser interferometer techniques, the refractive index of shocked LiF single crystal and its window correction at 1 550 nm wavelength were studied. The shock pressure in the LiF sample ranges from 38 to 124 GPa. The present results extend the refractive indexes of LiF single crystal at 1 550 nm,and give a linear LiF window correction relation at 1 550 nm below 124 GPa. The results provide an important reference for data analysis of window-mounted DPS （Doppler pin system） velocity measurement in shock experiment.