论文部分内容阅读
重点研究了激光驱动冲击波在嵌金层的组合靶中传播规律、金层对超热电子的屏蔽作用和对冲击波的致稳作用。给出了铝铜阻抗匹配靶基底的设计原则。设计了实验用的组合靶及不嵌金层的简单靶。对1989年在“神光”激光器上获取的实验数据进行了理论处理和分析,确认在铜样品中获得了0.8TPa的高压,而且冲击波测量误差≤5％。铝铜阻抗匹配实验取得了成功,得到的铜的高压冲击压缩数据与Nellis等人1988年发表的实验结果(包含地下核爆实验结果)拟合曲线非常接近。
Focusing on the laser-driven shock wave propagation in the combination of gold-embedded target layer, the gold layer of the super-hot electron shielding effect and the shock wave stabilizing effect. The design principle of Al-Cu impedance matching target substrate is given. The experimental targets and the simple target without gold layer were designed. The experimental data obtained from the “ShenGuang” laser in 1989 was theoretically processed and analyzed. It was confirmed that a high pressure of 0.8TPa was obtained in the copper sample and the measurement error of shock wave was less than or equal to 5%. Aluminum-copper impedance matching experiments have been successful, and the obtained copper high-pressure shock-compression data is very close to the fitting curve reported by Nellis et al. In 1988 (including the underground nuclear explosion test results).