应用于多层靶准等熵压缩实验的反积分方法

Backward Integration Method for Multilayer Target Quasi-Isentropic Compression Experiments

针对磁驱动和激光驱动准等熵压缩实验物理中多层结构靶设计和实验数据处理的需求,在反积分处理方法的基础上,提出了多层靶的层间传递方法,实现了多层靶内加载历史的反演计算。通过正、反积分数值实验以及激光驱动实验的正、反计算,验证了多层靶中反积分数据处理方法的有效性,在绝大部分计算范围内,多层靶的反积分处理精度可以达到1%以内。利用反积分方法开展了多层靶物理实验的波形设计,并分析了不同厚度胶层的多层靶对斜波加载实验的影响。

According to the requirements of target structure design and experimental data processing in multilayer target quasi-isentropic compression experiments,an interlayer transfer method for multilayer targets was proposed based on the backward integration method,the backward calculation of multilayer targets from the measuring surface to the loading surface or laser ablation surface was realized.Through the forward and backward integration numerical experiments and the application in laser driven experiment,the effectiveness of the backward integration method in multilayer targets was verified,and the backward integration processing accuracy of multilayer targets can reach within 1%in most of the calculation area.The waveform design of quasi-isentropic compression multilayer target experiments was carried out by backward integration method,and the influence of multilayer targets with different thicknesses of glue on quasiisentropic compression experiments was analyzed.