激光驱动冲击压缩下金属Al的高压声速研究

Study on High Pressure Sound Velocity for Metal Aluminum under Shock Compression Driven by Laser

摘要: 为研究Al材料的高压动态响应特性，采用激光驱动冲击压缩加载法和加窗VISAR法，开展了金属Al样品的高压声速研究，并完成了相关靶物理过程模拟与小尺度靶结构参数设计。实验获得了冲击加载与追赶稀疏物理过程图像，靶样品的纵波声速与理论预估结果相符。
- 激光 ,
- 冲击压缩 ,
- VISAR ,
- 纵波声速
Abstract: To study the high pressure dynamic response characteristics of metal aluminum, the high pressure sound velocity experiment was carried out with laser driven shock compression loading method and window-VISAR method. The small scale target structure was designed according to the simulation result of the key physical process for high pressure sound velocity. The interference signals of the shock loading and rarefaction process were successfully observed by streak camera. The longitudinal wave sound velocity of metal aluminum sample is well consistent with the theoretical result.
- laser ,
- shock compression ,
- VISAR ,
- longitudinal wave sound velocity

[1]	谭华. 实验冲击波物理导引[M]. 北京：国防工业出版社，2007.
[2]	DUFFY T S, AHRENS T J. Sound velocities at high pressure and temperature and their geophysical implications[J]. J Geophys Res, 1992, 97(B4): 4503-4520.
[3]	DUFFY T S, AHRENS T J. Compressional sound velocity, equation of state, and constitutive response of shock-compressed[J]. J Geophys Res, 1995, 100(B1): 529-542.
[4]	田宝贤，王钊，戴辉，等. 多路激光聚焦系统地均匀性分析[J]. 原子能科学技术，2013，47（9）：1633-1636.TIAN Baoxian, WANG Zhao, DAI Hui, et al. Spatial uniformity analysis of multi-laser-beam focusing system[J]. Atomic Energy Science and Technology, 2013, 47(9): 1633-1636（in Chinese）.
[5]	王钊，高爽，梁晶，等. 用于冲击诊断的成像型速度干涉仪[J]. 强激光与粒子束，2001，23（3）：661-665.WANG Zhao, GAO Shuang, LIANG Jing, et al. Imaging-velocity interferometer system for any reflector for shock diagnostics[J]. High Power Laser and Particle Beams, 2001, 23(3): 661-665（in Chinese）.
[6]	李维新. 一维不定常流与冲击波[M]. 北京：国防工业出版社，2003.
[7]	马云. 冲击载荷下LiF晶体折射率研究[D]. 绵阳：中国工程物理研究院，2003.