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Time-resolved Bragg coherent X-ray diffraction revealing ultrafast lattice dynamics in nano-thickness crystal layer using X-ray free electron laser

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Title: Time-resolved Bragg coherent X-ray diffraction revealing ultrafast lattice dynamics in nano-thickness crystal layer using X-ray free electron laser
Authors: Tanaka, Yoshihito Browse this author
Ito, Kiminori Browse this author
Nakatani, Takashi Browse this author
Onitsuka, Rena Browse this author
Newton, Marcus Browse this author →KAKEN DB
Sato, Takahiro Browse this author
Togashi, Tadashi Browse this author
Yabashi, Makina Browse this author
Kawaguchi, Tomoya Browse this author
Shimada, Koki Browse this author
Tokuda, Kazuya Browse this author
Takahashi, Isao Browse this author
Ichitsubo, Tetsu Browse this author
Matsubara, Eiichiro Browse this author
Nishino, Yoshinori Browse this author →KAKEN DB
Keywords: Coherent X-ray diffraction
Time-resolved measurement
X-ray free electron laser
Semiconductor
Nanocrystal
Issue Date: 1-Mar-2013
Publisher: The Ceramic Society of Japan
Journal Title: Journal of the Ceramic Society of Japan
Volume: 121
Issue: 1411
Start Page: 283
End Page: 286
Abstract: Ultrafast time-resolved Bragg coherent X-ray diffraction (CXD) has been performed to investigate lattice dynamics in a thin crystal layer with a nanoscale thickness by using a SASE (Self-Amplified Spontaneous Emission)-XFEL (X-ray Free Electron Laser) facility, SACLA. Single-shot Bragg coherent diffraction patterns of a 100 nm-thick silicon crystal were measured in the asymmetric configuration with a grazing exit using an area detector. The measured coherent diffraction patterns showed fringes extending in the surface normal direction. By using an optical femtosecond laser-pump and the XFEL-probe, a transient broadening of coherent diffraction pattern profile was observed at a delay time of around a few tens of picosecond, indicating transient crystal lattice fluctuation induced by the optical laser. A perspective application of the time-resolved Bragg CXD method to investigate small sized grains composing ceramic materials is discussed. (C)2013 The Ceramic Society of Japan. All rights reserved.
Type: article
URI: http://hdl.handle.net/2115/52780
Appears in Collections:電子科学研究所 (Research Institute for Electronic Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 西野 吉則

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