An experimental study on interplanetary collision using hypervelocity impact guns

利用激光冲击实验研究了硅酸盐材料在极端冲击条件下的状态方程。基于时间分辨发射光谱，我们得出结论，电子作为一个重要的能量库在冲击驱动过程中，通过吸热冲击诱导电离和放热电子复合。由于广泛使用的状态方程没有考虑这种电子行为，因此应该重新审视以前与硅酸盐蒸发有关的一些研究。

Laser shock experiments were carried out to investigate the equations of state(EOS) for silicate materials under impact-induced extreme conditions. Based on time-resolved emission spectra, we conclude that electrons behave as an important energy reservoir during impact-driven processes via endothermic shock-induced ionization and exothermic electron recombination. A number of previous studies related to silicate vaporization should be re-visited because the widely used EOS's do not consider such electron behaviors.