[P-PS06] Formation and evolution of planetary materials in the Solar System

[PPS06-18] Structure transformation process of shock-compressed forsterite by time-resolved XFEL diffraction

*Takuo Okuchi¹, Narangoo Purevjav¹, Norimasa Ozaki², Yusuke Seto³, Yoshinori Tange⁴, Toshimori Sekine², Naotaka Tomioka⁵, Takeshi Matsuoka², Kenjiro Takahashi², Yuhei Umeda², Kohei Miyanishi⁶, Yuichi Inubushi⁴, Toshiki Yabuuchi⁷, Ryosuke Kodama^2,6 (1.Institute for Planetary Materials, Okayama University, 2.Graduate School of Engeneering, Osaka University, 3.Graduate School of Science, Kobe University, 4.Japan Synchrotron Radiation Research Institute, 5.Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology, 6.Institute of Laser Engineering, Osaka University, 7.RIKEN SPring-8 Center)

Keywords:forsterite, x-ray free electron laser, laser-driven shock compression, shock metamorphism

We analysed transformation process of shock-compressed forsterite into high-pressure structures by time-resolved diffraction using x-ray free electron laser at SACLA. From the observed results so far, it was indicated that forsterite structure transforms into an indermediate high-pressure structure through a fast slip deformation process, which has implication on the origin of high pressure structure such as ringwoodite which was frequently found in heavily-shocked meteorites.