Abstract
It is important to recover shock-compressed samples for understanding synthetic mechanism of highpressure
phase, shock metamorphism, and shock-melt vein in meteorites. We developed recovery
technique of the laser-shocked minerals at higher pressures (130-460 GPa) in high-power laser system.
We used the single crystal olivine which is a major mineral of meteorites and Earth. The deformation,
fracture, and phase identification of the recovered olivine were observed comprehensively by optical
microscopy, field emission-scanning electron microscopy, electron backscatter diffraction, X-ray
diffraction, and micro-Raman spectroscopy. There were three distinctive structures in the recovered
sample. We estimated pressure attenuation rate of shock wave in the sample from the distribution of
these structures. The attenuation rates of 2-3 in our experiments were larger than that in previous
experiments and simulations.
