利用斜波发生器产生准等熵压缩的实验技术

Experimental Technique for Quasi-isentropic Compression via Ramp-wave Generator

采用熔融法制备了Li2O-Al2O3-SiO2系低膨胀微晶玻璃,以此作为斜波发生器进行了准等熵压缩实验技术的探索。设计了2种靶装置,利用高速弹丸撞击斜波发生器获得了波阵面前沿明显被展宽的准等熵压缩波,并进一步利用斜波发生器产生的准等熵压缩波实现了对铝合金(LY12-Al)的准等熵加载。结果表明,随着斜波发生器厚度的增加,准等熵压缩波波阵面前沿的上升时间逐渐增加,加载速率变缓,为低压下的准等熵压缩测量提供了一种可行的实验加载技术。

A kind of Li 2O-Al 2O 3-SiO 2 system glass-ceramics,which had a low coefficient of thermal expansion,was prepared by melting method and used as the ramp-wave generator material.On one-stage light-gas gun,the experimental technique for quasi-isentropic compression via the ramp-wave generator was explored.By impacting the ramp-wave generator,quasi-isentropic compression waves with an extended wave s front were produced.The quasi-isentropic loadings to LY12-Al samples were further realized via the ramp-wave ge...