[22p-P03-1~23] 17 Nanocarbon Technology(Poster)

[22p-P03-19] In situ XRD Observation on Structural Changes of Neutron-irradiated HOPG under High-temperature Compression and Decompression

〇Wataru Nakamura¹, Takashi Kitazume¹, Shunjiro Fujii¹, Shin'ichi Honda¹, Masahito Niibe¹, Michitaka Terasawa¹, Yuji Higo², Keisuke Niwase³, Yohei Sato⁴ (1.Hyogo Univ., 2.Japan Synchrotron Radiation Research Institute, 3.Hyogo Univ. of Teacher Education, 4.IMRAM, Tohoku Univ.)

Keywords:Neutron-irradiated, In situ XRD Observation, HOPG

In this study, we focused on the peak of the graphite (002) [G(002)] plane of neutron-irradiated highly oriented pyrolytic graphite (HOPG) using in-situ X-ray diffraction method and analyzed the structural change during the compression and decompression processes at high temperature in order to understand the details of the transformation mechanism of neutron-irradiated HOPG. It was found that the G(002) peak can be represented by two components from RT to about 600°C, and it can be represented by only one component at the higher temperature in the neutron-irradiated sample, whereas it can be represented by only one component in the unirradiated sample.