固体套筒内爆非冲击压缩研究

Research on the Shockless Compression of the Solid Liner Implosion

Z箍缩上的套筒准等熵压缩技术可以用来研究材料的高压状态方程。通过MDSC磁流体力学程序,以铝为负载材料,对PTS shot37负载电流进行非冲击压缩负载设计。结果显示,在原始电流下,没有合适的铝套筒尺寸可以实现非冲击压缩;对原始电流进行波形调节,将电流上升时间调为202和303ns后,获得了满足非冲击压缩条件的套筒尺寸范围。当电流上升时间为303ns时,半径为2.5mm,厚度为0.6mm的套筒尺寸在电流最大时刻,保留固相的厚度为0.12mm,此时固相最大压力为63GPa,最大内爆速度为15km/s。

The quasi-isentropic compression technique of the liner in the Z-pinch can be used to study high pressure state equations of materials.In this research,we designed the quasi-isentropic compression load for PTS shot37 load currents through the MDSC magnetohydrodynamic code,with Al being the load material.The results show that it is impossible to find an appropriate liner for quasi-isentropic compression under the original current pulse,but it is possible under the shaped currents.When the current increasing time is 303 ns,the liner with a radius of 2.5mm and a thickness of 0.6mm gets the maximal pressure（63GPa）and implosion speed（15km/s）when the current reaches its maximum,while the remaining solid liner is 0.12 mm thick.