小型激光器驱动飞片的平均速度测量研究

The measurement of the average velocity of flyer driven by mini size laser

提出了一种小型激光器驱动飞片的平均速度测量方法 ,即利用石英晶体的压电效应可以最终得到飞片的平均速度。详细介绍了激光驱动飞片的过程 ,石英计的设计等 ,对系统的响应灵敏度和实验数据进行了分析 ,结果显示 :这一方法具有简单可靠的特点 。

A kind of simple method is presented on the measurement of average velocity of flyer driven by mini size laser using quartz gauges. In the experiments, 5.5μm thickness and 0.5～0.8mm diameter of aluminum flyer have been driven successfully by mini size YAG laser in the energy range of 100～300mJ, the highest velocity of flyer have been up to 6.6km/s, and the relationship of flyer velocity and energy density have been obtained. The process of experiments and design of quartz sensor are introduced in detail in the article, and the analysis has made on the accuracy of experiment system and experimental data. It is proved that the method is simple and reliable, and can fit well the accuracy need of experiment.