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Makarov, S. S.*; Zhakhovsky, V. V.*; Grigoryev, S. Yu.*; Chuprov, P.*; Pikuz, T. A.*; Inogamov, N. A.*; Khokhlov, V. A.*; Petrov, Y. V.*; Perov, E. A.*; Shepelev, V.*; et al.
Nature Communications (Internet), 16, p.11504_1 - 11504_13, 2025/12
Times Cited Count：2 Percentile：24.47(Multidisciplinary Sciences)Miura, Eisuke*; Hironaka, Yoichiro*; Kurita, Takashi*; Shobu, Takahisa; Shiro, Ayumi*; Miyanishi, Kohei*; Ozaki, Narimasa*; Watari, Takeshi*; Shigemori, Keisuke*
SPring-8/SACLA Riyo Kenkyu Seikashu (Internet), 13(5), p.283 - 288, 2025/10
no abstracts in English
Miura, Eisuke*; Hironaka, Yoichiro*; Kurita, Takashi*; Shobu, Takahisa; Shiro, Ayumi*; Miyanishi, Kohei*; Ozaki, Narimasa*; Watari, Takeshi*; Shigemori, Keisuke*
SPring-8/SACLA Riyo Kenkyu Seikashu (Internet), 13(5), p.302 - 305, 2025/10
no abstracts in English
Miura, Eisuke*; Hironaka, Yoichiro*; Kurita, Takashi*; Shobu, Takahisa; Tominaga, Aki; Miyanishi, Kohei*; Ozaki, Narimasa*; Watari, Takeshi*; Shigemori, Keisuke*
SPring-8/SACLA Riyo Kenkyu Seikashu (Internet), 13(5), p.293 - 298, 2025/10
no abstracts in English
Rapp, L.*; Matsuoka, Takeshi*; Firestein, K. L.*; Sagae, Daisuke*; Habara, Hideaki*; Mukai, Keiichiro*; Tanaka, Kazuo*; Gamaly, E. G.*; Kodama, Ryosuke*; Seto, Yusuke*; et al.
Physical Review Research (Internet), 6(2), p.023101_1 - 023101_18, 2024/04
It is generally known that irradiating a solid surface with a laser pulse of ultra-relativistic intensity generates a plasma on the surface, which in turn creates an ultrahigh pressure inside. In this study, the crystal structure analysis of high-pressure phases generated inside silicon single-crystals irradiated by this laser was performed using the diffraction system at the Stress and Imaging apparatus of BL22XU, which is a JAEA-BL. The results obtained confirm the existence of high-pressure phases that silicon is said to possess: body-centered, rhombohedral, hexagonal, and tetragonal phases in the interior. We can get the results that the crystal structure of silicon polymorphs of being include body-centered, rhombohedral, hexagonal-diamond, tetragonal exists. In the future, we will accumulate data and apply them to control the internal structure, strength, and functionality of materials.
Miyagawa, Reina*; Kamibayashi, Daisuke*; Nakamura, Hirotaka*; Hashida, Masaki*; Zen, H.*; Somekawa, Toshihiro*; Matsuoka, Takeshi*; Ogura, Hiroyuki*; Sagae, Daisuke*; Seto, Yusuke*; et al.
Scientific Reports (Internet), 12, p.20955_1 - 20955_8, 2022/12
Times Cited Count：5 Percentile：28.79(Multidisciplinary Sciences)We evaluated Laser-Induced Periodic Surface Structure (LIPSS) crystal structures using the stress imaging station at BL22XU of JAEA-BL on SPring-8. Crystallization of LIPPS was used different two types laser these are Ti:Sapphire laser (wavelength: 800 nm) and MIR-FEL (mid-infrared free electron laser, wavelength 11.4 
m). These lasers are different in the laser pulse structure and the wavelength. We investigated on the effects of formed LIPSS crystallization using different kind of laser. Measured synchrotron X-ray energy is 30 keV and beam size is 20 m. Detector of diffracted X-ray is two-dimensional detector (PILATUS300K, DECTRIS). LIPSS formed using Ti:Sapphire laser has deformed structure with good crystallinity. LIPSS formed using MIR-FEL has dislocation or fault without structural stress. These results show depending on select of laser forming LIPPS structure. These information becomes important a point of the functional application of LIPSS.
Pikuz, T.*; Faenov, A.*; Matsuoka, Takeshi*; Matsuyama, Satoshi*; Yamauchi, Kazuto*; Ozaki, Narimasa*; Albertazzi, B.*; Inubushi, Yuichi*; Yabashi, Makina*; Tono, Kensuke*; et al.
Scientific Reports (Internet), 5, p.17713_1 - 17713_10, 2015/12
Times Cited Count：46 Percentile：88.08(Multidisciplinary Sciences)