A Focusing supermirror for time-of-flight grazing-incidence small-angle neutron scattering measurement

Yamazaki, Dai ; Maruyama, Ryuji ; Aoki, Hiroyuki ; Hanashima, Takayasu*; Akutsu-Suyama, Kazuhiro*; Miyata, Noboru*; Soyama, Kazuhiko

This study developed a neutron-beam focusing supermirror for grazing-incidence small-angle neutron scattering (GISANS) measurements. It was fabricated by depositing NiC/Ti supermirror film with ion-beam sputtering on a precise elliptic surface of fused quartz figured using the elastic emission machining technique. Neutron measurements at a pulsed neutron reflectometer BL17 of MLF, J-PARC successfully demonstrated that the focusing supermirror enhances a beam intensity twentyfold compared with an optimally collimated beam, achieving the signal-to-background ratio of the focal spot as high as 500. The mirror can be readily installed and used at BL17.

Language	:	English
Journal	:	Quantum Beam Science (Internet)
Volume	:	9
Number	:	2
Pages	:	p.20_1 - 20_12
Publication Year/Month	:	2024/06
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Paper URL	:	https://doi.org/10.3390/qubs9020020
DOI for research data	:	Link to research data related to this paper/report.
Keywords	:	neutron; focusing; supermirror; ion beam sputtering; GISANS; time-of-flight
Research Facility	:	J-PARC物質・生命科学実験施設
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Registration No. : AA20241003
JAEA Abstracts No. : 53000827
Paper Submission No. : 29621

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