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。

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.