Development of recovery technique of laser-shocked earth and planetary interior materials

为了研究陨石撞击现象，在大型激光装置上发展了冲击变质技术。采用由铝组成的回收池，在橄榄石的前面加一块钛板，完全回收了受冲击的样品(橄榄石)。通过对回收的橄榄石的分析，可以观察到陨石撞击坑内部模拟为冲击压缩机制的冲击样品的熔融、塑性变形和弹性变形，从而验证了陨石坑内部的冲击变质机制。此外，它还成功地进行了声速观测，以评估内部的激波衰减率。

In order to investigate a meteorite impact phenomenon, the shock metamorphism technique in a large laser facility was developed. The shocked sample (olivine) was fully recovered by using the recovery cell which consists of aluminum with a titanium plate in the front of theolivine. From the analysis of the recovered olivine, the melting, plastic deformation, and elastic deformation of the shocked sample modeled as a shock compression mechanism in the meteorite impact crater interior could be observed, and the shock metamorphism mechanism in the crater interior was able to be verified. Moreover, it succeeded in the observation of the sound velocity for evaluating the shock decay ratio to the interior.