Bragg-edge neutron transmission spectrum analysis using a high-speed-camera-type time-of-flight neutron imaging detector

Sato, Hirotaka; Mochiki, Koh-ichi; Tanaka, Kenta; Ishizuka, Ken; Ishikawa, Hirotaku; Kamiyama, Takashi; Kiyanagi, Yoshiaki

Bragg-edge neutron transmission spectrum analysis using a high-speed-camera-type time-of-flight neutron imaging detector

Sato, Hirotaka; Mochiki, Koh-ichi; Tanaka, Kenta et al.

Nuclear Instruments and Methods in Physics Research Section A : Accelerators, Spectrometers, Detectors and Associated Equipment, 2019, 943, 162501

Permalink : https://hdl.handle.net/2115/83121

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アクセス権	open access
URI	https://hdl.handle.net/2115/83121
タイトル	Bragg-edge neutron transmission spectrum analysis using a high-speed-camera-type time-of-flight neutron imaging detector
著者	Sato, Hirotaka ; Mochiki, Koh-ichi ; Tanaka, Kenta ; Ishizuka, Ken ; Ishikawa, Hirotaku ; Kamiyama, Takashi ; Kiyanagi, Yoshiaki
著者名 Sato, Hirotaka
著者名 Mochiki, Koh-ichi
著者名 Tanaka, Kenta
著者名 Ishizuka, Ken
著者名 Ishikawa, Hirotaku
e-Rad_Researcher 50233961 著者名 Kamiyama, Takashi
e-Rad_Researcher 80002202 著者名 Kiyanagi, Yoshiaki
言語	英語
キーワード	Time-of-flight neutron imaging detector
	High speed camera
	Pulsed neutron Bragg-edge transmission imaging
	Quantitative crystallographic information analysis
発行日	2019-11-01
出版者	Elsevier
収録物名	Nuclear Instruments and Methods in Physics Research Section A : Accelerators, Spectrometers, Detectors and Associated Equipment
巻(号)	943
ページ	162501
抄録	Thus far, quantitative imaging of crystallographic information using a time-of-flight (TOF) neutron Bragg-edge transmission method has been performed using counting-type neutron TOF-imaging detectors. However, at intense pulsed neutron beam facilities, the limit of the maximum counting rate of the detectors restricts acceptable neutron intensity. A camera-type neutron imaging detector can accept considerably higher neutron intensity than counting-type detectors. For this reason, a camera-type detector applicable for the TOF measurement has been developed. However, the camera-type detector has not been applied to quantitative analysis of crystallographic information thus far. As the neutron spectrum data obtained by a camera-type detector may have different characteristics compared with those obtained by a counting-type detector, it is important to experimentally demonstrate the applicability of the camera-type detector for quantitative crystallographic analysis. Thus, in this study, we performed a demonstration experiment using a steel knife specimen at a beam-line connected to a coupled-type neutron moderator of the Hokkaido University Neutron Source (HUNS). We applied the Rietveld-type data analysis method to measured Bragg-edge neutron transmission spectra in order to obtain quantitative crystallographic information, and we then conducted the crystalline phase imaging. Finally, using the new detector system along with the spectral analysis, the results were obtained non-destructively; the results showed that the crystalline phase distribution of the steel knife composed of two phases was changed gradually, and the crystallographic texture and crystallite size distributions were almost uniform. In addition, the new detector system provided the best spatial resolution of 520 mu m at a field-of-view of 13 cm x 13 cm.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
権利情報	© 2019, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
PISSN	0168-9002
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1016/j.nima.2019.162501