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Teshigawara M, Ikeda Y, Yan M, Muramatsu K, Sutani K, Fukuzumi M, Noda Y, Koizumi S, Saruta K, Otake Y. New Material Exploration to Enhance Neutron Intensity below Cold Neutrons: Nanosized Graphene Flower Aggregation. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 13:76. [PMID: 36615985 PMCID: PMC9824194 DOI: 10.3390/nano13010076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 12/20/2022] [Accepted: 12/21/2022] [Indexed: 06/17/2023]
Abstract
It is proposed that nanosized graphene aggregation could facilitate coherent neutron scattering under particle size conditions similar to nanodiamonds to enhance neutron intensity below cold neutrons. Using the RIKEN accelerator-driven compact neutron source and iMATERIA at J-PARC, we performed neutron measurement experiments, total neutron cross-section and small-angle neutron scattering on nanosized graphene aggregation. For the first time, the measured data revealed that nanosized graphene aggregation increased the total neutron cross-sections and small-angle scattering in the cold neutron energy region. This is most likely due to coherent scattering, resulting in higher neutron intensities, similar to nanodiamonds.
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Affiliation(s)
- Makoto Teshigawara
- J-PARC Center, Japan Atomic Energy Agency, 2-4 Shirakata, Tokai-mura, Naka 319-1195, Ibaraki, Japan
| | - Yujiro Ikeda
- RIKEN Center for Advanced Photonics, RIKEN, Wako 351-0198, Saitama, Japan
| | - Mingfei Yan
- RIKEN Center for Advanced Photonics, RIKEN, Wako 351-0198, Saitama, Japan
| | - Kazuo Muramatsu
- INCUBATION ALLIANCE INC. 1-2-25, Wadayama-dori, Hyogo-ku, Kobe 652-0884, Hyogo, Japan
| | - Koichi Sutani
- INCUBATION ALLIANCE INC. 1-2-25, Wadayama-dori, Hyogo-ku, Kobe 652-0884, Hyogo, Japan
| | - Masafumi Fukuzumi
- Department of Materials and Analysis, Hyogo Prefectural Institute of Technology, Yukihira-cho, Suma-ku, Kobe 654-0037, Hyogo, Japan
| | - Yohei Noda
- Institute of Quantum Beam Science, Ibaraki University, 162-1 Shirakata, Tokai-mura, Naka 319-1106, Ibaraki, Japan
| | - Satoshi Koizumi
- Institute of Quantum Beam Science, Ibaraki University, 162-1 Shirakata, Tokai-mura, Naka 319-1106, Ibaraki, Japan
| | - Koichi Saruta
- J-PARC Center, Japan Atomic Energy Agency, 2-4 Shirakata, Tokai-mura, Naka 319-1195, Ibaraki, Japan
| | - Yoshie Otake
- RIKEN Center for Advanced Photonics, RIKEN, Wako 351-0198, Saitama, Japan
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Advanced Small-Angle Scattering Instrument Available in the Tokyo Area. Time-Of-Flight, Small-Angle Neutron Scattering Developed on the iMATERIA Diffractometer at the High Intensity Pulsed Neutron Source J-PARC. QUANTUM BEAM SCIENCE 2020. [DOI: 10.3390/qubs4040042] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A method of time-of-flight, small-angle neutron scattering (TOF-SANS) has been developed based on the iMATERIA powder diffractometer at BL20, of the Materials and Life Sciences Facility (MLF) at the high-intensity proton accelerator (J-PARC). A large-area detector for SANS, which is composed of triple-layered 3He tube detectors, has a hole at its center in order to release a direct beam behind and to detect ultra-small-angle scattering. As a result, the pulsed-neutron TOF method enables us to perform multiscale observations covering 0.003 < q (Å−1) < 40 (qmax/qmix = 1.3 × 104) and to determine the static structure factor S(q) and/or form factor P(q) under real-time and in-situ conditions. Our challenge, using unique sample accessories of a super-conducting magnet and polarized neutron, is dynamic nuclear polarization (DNP) for contrast variation, especially for industrial use. To reinforce conventional SANS measurements with powder materials, grazing-incidence small-angle neutron scattering (GISANS) or reflectivity is also available on the iMATERIA instrument.
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