冲击压缩下钨靶对514.5 nm激光的漫反射率

Diffuse Reflectivity of Shock-Compressed Tungsten Target to 514.5 nm Laser

1.
Institute of Fluid Physics, CAEP, Chengdu 610003, China;
2.
College of Precision Instrument and Opto-Electronics Engineer, Tianjin University, Tianjin 300072, China

摘要: 在二级轻气炮上完成了一系列铜飞片平面碰撞钨靶的实验，并测量了钨靶在85~250 GPa的冲击压缩下，对波长514.5 nm入射激光的漫反射率。实验结果显示：冲击压缩使钨靶表面的漫反射能力降低，但不是单调下降的，并在165 GPa压力附近出现漫反射率相对增大的现象。
- 表面漫反射 /
- 冲击压缩 /
- 钨靶 /
- 激光
Abstract: A series of experiments of flat impact between copper flyer and tungsten target has been done on a two stage light gas gun and the diffuse reflectivity of tungsten target to 514.5 nm incident laser was measured under 85～250 GPa shock pressure. The experimental results show that shock compression degrades the reflecting ability of target surface, but the reflectivity doesn't reduce monotonously while shock pressure rises.
- shock compression /
- diffuse reflection /
- tungsten target /
- laser