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Development of Band-Extended Inelastic Neutron Scattering Measurement Technology for Direct Geometry Spectrometers

Research Project

Project/Area Number 18K11927
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 80040:Quantum beam science-related
Research InstitutionJapan Atomic Energy Agency

Principal Investigator

Nakajima Kenji  国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 J-PARCセンター, 研究主席 (10272535)

Project Period (FY) 2018-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords中性子散乱 / 中性子分光器 / チョッパー型分光器 / 拡張波長帯域中性子非弾性散乱実験法 / interveined Trajectory / J-PARC / ディスクチョッパー / 非弾性散乱 / 中性子非弾性散乱 / 中性子準弾性散乱 / パルス中性子 / 測定手法 / 多重Ei測定
Outline of Final Research Achievements

We aimed to establish a new neutron inelastic/quasielastic scattering method to obtain wide time-widow information of dynamics in the materials with high efficiency on a chopper spectrometer at a pulsed neutron source. We found that, by allowing crossing of the trajectories of incident neutron on time-of-flight diagram (we call it 'interveined trajectory'), we can extend the effective band-width and measuring efficiency. We formulated necessary conditions to operate such experiments. We also planned experiments to verify the idea on the real spectrometer by installing newly fabricated multi-slit disk on the chopper. However, due to the influence of the pandemic of COVID-19, the plan became impossible and was abandoned.

Academic Significance and Societal Importance of the Research Achievements

本研究にて、パルス中性子源に設置された直接配置型中性子分光器についてその測定効率を引き上げる新たな手法を提案することができた。本研究で見出された「interveined trajectory」を利用した測定方法では、実効的なバンド幅を広げ、異なる時間の物理現象についてその時間幅をより広く同時測定できる可能性を見出し、それらについて装置を設計、実験の実行に必要な条件の定式化を示せた。また、本研究で当初計画した実証実験は行うことができなかったが、実証実験のために開発された多スリットのディスクチョッパー用ディスクの製造技術は、今後、我が国内で先端的な計測デバイスを製作するための基盤となるものである。

Report

(6 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (13 results)

All 2022 2021 2019 2018

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (11 results) (of which Int'l Joint Research: 9 results,  Invited: 4 results)

  • [Journal Article] Possible options for efficient wide-band polychromatic measurements using chopper spectrometers at pulsed sources2022

    • Author(s)
      Kenji Nakajima, Tatsuya Kikuchi, Seiko Ohira-Kawamura, Wataru Kambara
    • Journal Title

      EPJ Web of Conferences

      Volume: 272 Pages: 02012-02012

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Recent Update of AMATERAS: A Cold-Neutron Disk-Chopper Spectrometer2021

    • Author(s)
      Nakajima Kenji、Ohira-Kawamura Seiko、Kofu Maiko、Murai Naoki、Inamura Yasuhiro、Kikuchi Tatsuya、Wakai Daisuke
    • Journal Title

      JPS Conf. Proc.

      Volume: 3

    • DOI

      10.7566/jpscp.33.011089

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Possible option for efficient wide-band polychromatic measurements on chopper spectrometers at pulsed sources2022

    • Author(s)
      Kenji Nakajima, Tatsuya Kikuchi, Seiko Ohira-Kawamura, Wataru Kambara
    • Organizer
      The 10th workshop on Inelastic Neutron Spectrometers (WINS2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Possible option for efficient wide-band polychromatic measurements on chopper spectrometers at pulsed sources2022

    • Author(s)
      Kenji Nakajima, Tatsuya Kikuchi, Seiko Ohira-Kawamura, Wataru Kambara
    • Organizer
      International Conference on Neutron Scattering 2022 (ICNS2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The Cold Neutron Disk-Chopper Spectrometer AMATERAS -Overview & Recent Scientific Outcomes2019

    • Author(s)
      Kenji Nakajima
    • Organizer
      2019 The 1st Workshop on Inelastic Neutron Scattering in Asia
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Recent status of a cold neutron disk chopper spectrometer AMATERAS2019

    • Author(s)
      Kenji Nakajima, Seiko Ohira-Kawamura, Maiko Kofu, Naoki Murai, Yasuhiro Inamura, Tatsuya Kikuchi, Daisuke Wakai
    • Organizer
      J-PARC Symposium 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Current Status of AMATERAS - a Cold-Neutron Disk-Chopper Spectrometer -2019

    • Author(s)
      Kenji Nakajima, Seiko Ohira-Kawamura, Maiko Kofu, Naoki Murai, Yasuhiro Inamura, Tatsuya Kikuchi, Daisuke Wakai
    • Organizer
      The 23rd meeting of the International Collaboration on Advanced Neutron Sources (ICANS-XXIII)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] AMATERAS : a cold-neutron disk chopper spectrometer - current status and recent outcomes -2019

    • Author(s)
      Kenji Nakajima, Seiko Ohira-Kawamura, Maiko Kofu, Naoki Murai, Yasuhiro Inamura, Tatsuya Kikuchi, Daisuke Wakai
    • Organizer
      The 3rd Asia-Oceania Conference on Neutron Scattering (AOCNS2019)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Nine years of AMATERAS ─ a cold-neutron disk-chopper spectrometer2018

    • Author(s)
      Kenji Nakajima, Seiko Ohira-Kawamura, Maiko Kofu, Tatsuya Kikuchi, Yasuhiro Inamura
    • Organizer
      QENS/WINS2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] J-PARC, Frontier of condensed matter physics at J-PARC2018

    • Author(s)
      Kenji Nakajima
    • Organizer
      Present and Future of Neutron Scattering Research on Condensed Matter Physics -Future Perspective of US-Japan Cooperative Program on Neutron Scattering-
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Recent Progress and Scientific Activities at MLF, J-PARC2018

    • Author(s)
      Kenji Nakajima
    • Organizer
      ANBUG-AINSE Neutron Scattering Symposium
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 冷中性子ディスクチョッパー型分光器AMATERASの2018年2018

    • Author(s)
      中島健次、河村聖子、古府麻衣子、菊地龍弥、稲村泰弘
    • Organizer
      日本中性子科学会第18回年会
    • Related Report
      2018 Research-status Report
  • [Presentation] 冷中性子ディスクチョッパー型分光器AMATERAS2018

    • Author(s)
      中島健次、河村聖子、古府麻衣子、菊地龍弥、稲村泰弘、若井大介
    • Organizer
      User Group Meeting on MLF Spectrometers DIRECTION 2018
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2024-01-30  

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