Application of precise neutron focusing mirrors for neutron reflectometry: latest results and future prospects.

Autor: Yamada NL; Institute of Materials Structure Science, High Energy Accelerator Research Organization, Tokai, Naka, Ibaraki 319-1106, Japan.; Materials and Life Science Experimental Facility, Japan Proton Accelerator Research Complex, Tokai, Naka, Ibaraki 319-1195, Japan., Hosobata T; RIKEN Center for Advanced Photonics, RIKEN, Wako, Saitama 351-0198, Japan., Nemoto F; Institute of Materials Structure Science, High Energy Accelerator Research Organization, Tokai, Naka, Ibaraki 319-1106, Japan.; Department of Materials Science and Engineering, National Defense Academy, Yokosuka, Kanagawa 239-8686, Japan., Hori K; Institute of Materials Structure Science, High Energy Accelerator Research Organization, Tokai, Naka, Ibaraki 319-1106, Japan.; Sumitomo Rubber Industries Ltd, Kobe, Hyogo 651-0071, Japan., Hino M; Kyoto University Institute for Integrated Radiation and Nuclear Science, Kumatori, Osaka 590-0494, Japan., Izumi J; Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Yokohama, Kanagawa 226-8502, Japan., Suzuki K; Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Yokohama, Kanagawa 226-8502, Japan.; All-Solid-State Battery Unit, Institute of Innovation Research, Tokyo Institute of Technology, Yokohama, Kanagawa 226-8503, Japan., Hirayama M; Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Yokohama, Kanagawa 226-8502, Japan.; All-Solid-State Battery Unit, Institute of Innovation Research, Tokyo Institute of Technology, Yokohama, Kanagawa 226-8503, Japan., Kanno R; All-Solid-State Battery Unit, Institute of Innovation Research, Tokyo Institute of Technology, Yokohama, Kanagawa 226-8503, Japan., Yamagata Y; RIKEN Center for Advanced Photonics, RIKEN, Wako, Saitama 351-0198, Japan.
Jazyk: angličtina
Zdroj: Journal of applied crystallography [J Appl Crystallogr] 2020 Oct 26; Vol. 53 (Pt 6), pp. 1462-1470. Date of Electronic Publication: 2020 Oct 26 (Print Publication: 2020).
DOI: 10.1107/S1600576720013059
Abstrakt: Neutron reflectometry (NR) is a powerful tool for providing insight into the evolution of interfacial structures, for example via operando measurements for electrode-electrolyte interfaces, with a spatial resolution of nanometres. The time resolution of NR, which ranges from seconds to minutes depending on the reflection intensity, unfortunately remains low, particularly for small samples made of state-of-the-art materials even with the latest neutron reflectometers. To overcome this problem, a large-area focusing supermirror manufactured with ultra-precision machining has been employed to enhance the neutron flux at the sample, and a gain of approximately 100% in the neutron flux was achieved. Using this mirror, a reflectivity measurement was performed on a thin cathode film on an SrTiO 3 substrate in contact with an electrolyte with a small area of 15 × 15 mm. The reflectivity data obtained with the focusing mirror were consistent with those without the mirror, but the acquisition time was shortened to half that of the original, which is an important milestone for rapid measurements with a limited reciprocal space. Furthermore, a method for further upgrades that will reveal the structural evolution with a wide reciprocal space is proposed, by applying this mirror for multi-incident-angle neutron reflectometry.
(© Norifumi L. Yamada et al. 2020.)
Databáze: MEDLINE
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