• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Development and application of an epithermal neutron polarizing device

Research Project

Project/Area Number 18K11929
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

Oku Takayuki  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, リーダー (10301748)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2020: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2018: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords中性子 / 偏極中性子 / 中性子散乱 / 中性子偏極子 / He-3スピンフィルター / SEOP / 熱外中性子 / スピン交換光ポンピング法 / 3Heスピンフィルター
Outline of Final Research Achievements

In this study, we have developed a neutron spin filter using He-3 gas based on the spin exchange optical pumping (SEOP) method for efficient polarization of epithermal neutrons.
Firstly, we developed a high-power (>100 W) and compact laser optics with a narrow laser wavelength of 0.2 nm, which is the absorption width of alkali metals used in the SEOP method. Then, we developed an aluminum silicate glass cell which encapsulated He-3 gas, rubidium, and potassium with an optimum mixing ratio to efficiently transfer the electron spin polarization of alkali metals to that of He-3. Then, we integrated both devices and developed an epithermal neutron spin filter.

Academic Significance and Societal Importance of the Research Achievements

J-PARCの大強度パルス中性子源が稼働し、それ以前はほとんど利用することができなかった熱外中性子等の高エネルギー中性子が得られるようになり、散乱実験やパルス中性子イメージングなど様々な実験で利用できるようになった。その一方で、偏極中性子に関して述べると、世界的に見ても中性子の偏極技術とその利用は、熱中性子( エネルギー数十meV)以下のエネルギー領域に限定されている。熱外中性子を効率良く偏極して用いることができれば、新しい物理を切り開くブレークスルーとなるような基礎物理の研究や物性研究から産業利用まで、その波及効果は極めて大きい。そこで、本研究では、熱外中性子を偏極する技術開発を行った。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (15 results)

All 2021 2020 2019 2018

All Journal Article (8 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 5 results,  Open Access: 3 results) Presentation (7 results) (of which Int'l Joint Research: 5 results,  Invited: 3 results)

  • [Journal Article] Study of Neutron Nuclear Spin Correlation Term with a Polarized Xe Target2021

    • Author(s)
      Sakai Kenji、Oku Takayuki、Okudaira Takuya、Kai Tetsuya、Harada Masahide、Hiroi Kosuke、Hayashida Hirotoshi、Kakurai Kazuhisa、Shimizu Hirohiko M.、Hirota Katsuya、Yamamoto Tomoki、Ino Takashi
    • Journal Title

      Proceedings of the 3rd J-PARC Symposium (J-PARC2019)

      Volume: 33

    • DOI

      10.7566/jpscp.33.011116

    • Related Report
      2020 Annual Research Report
  • [Journal Article] A Neutron Depolarization Measurement of Single Crystal Fe by Using a 3He Neutron Spin Filter and Magnetic Super-mirrors2021

    • Author(s)
      Okudaira Takuya、Oku Takayuki、Sakai Kenji、Hiroi Kosuke、Shinohara Takenao、Ino Takashi、Kira Hiroshi、Hayashida Hirotoshi、Suzuki Jun-ichi、Kakurai Kazuhisa、Aizawa Kazuya
    • Journal Title

      Proceedings of the 3rd J-PARC Symposium (J-PARC2019)

      Volume: 33

    • DOI

      10.7566/jpscp.33.011096

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Polarization analysis for small-angle neutron scattering with a 3He spin filter at a pulsed neutron source2021

    • Author(s)
      Okudaira Takuya、Ueda Yuki、Hiroi Kosuke、Motokawa Ryuhei、Inamura Yasuhiro、Takata Shin-ichi、Oku Takayuki、Suzuki Jun-ichi、Takahashi Shingo、Endo Hitoshi、Iwase Hiroki
    • Journal Title

      Journal of Applied Crystallography

      Volume: 54 Issue: 2 Pages: 548-556

    • DOI

      10.1107/s1600576721001643

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Transverse asymmetry of γ rays from neutron-induced compound states of La1402020

    • Author(s)
      Yamamoto T.、Okudaira T.、Endo S.、Fujioka H.、Hirota K.、Ino T.、Ishizaki K.、Kimura A.、Kitaguchi M.、Koga J.、Makise S.、Niinomi Y.、Oku T.、Sakai K.、Shima T.、Shimizu H. M.、Takada S.、Tani Y.、Yoshikawa H.、Yoshioka T.
    • Journal Title

      Physical Review C

      Volume: 101 Issue: 6 Pages: 064624-064624

    • DOI

      10.1103/physrevc.101.064624

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Development and application of a 3He Neutron Spin Filter at J-PARC2020

    • Author(s)
      Okudaira T.、Oku T.、Ino T.、Hayashida H.、Kira H.、Sakai K.、Hiroi K.、Takahashi S.、Aizawa K.、Endo H.、Endo S.、Hino M.、Hirota K.、Honda T.、Ikeda K.、Kakurai K.、Kambara W.、Kitaguchi M.、Oda T.、Ohshita H.、Otomo T.、Shimizu H.M.、Shinohara T.、Suzuki J.、Yamamoto T.
    • Journal Title

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

      Volume: 977 Pages: 164301-164301

    • DOI

      10.1016/j.nima.2020.164301

    • NAID

      120006882449

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Development of an in Situ 3He NSF Using SEOP Technique with an Evaluation System for the Pulsed Neutron Source2020

    • Author(s)
      Okudaira T.、Oku T.、Sakai K.、Ino T.、Hayashida H.、Hiroi K.、Shinohara T.、Kakurai K.、Aizawa K.
    • Journal Title

      Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques

      Volume: 14 Issue: S1 Pages: S165-S168

    • DOI

      10.1134/s1027451020070356

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 偏極中性子2018

    • Author(s)
      平賀 晴弘、山口 泰男、丸山 龍治、奥 隆之、猪野 隆
    • Journal Title

      波紋

      Volume: 28 Pages: 144-149

    • NAID

      130007746204

    • Related Report
      2018 Research-status Report
    • Open Access
  • [Journal Article] Development of a Neutron Spin Filter for a T Violation Search in Compound Nuclei2018

    • Author(s)
      T. Yamamoto, H. M. Shimizu, M. Kitaguchi, K. Hirota, T. Okudaira, C. C. Haddock, N. Oi, I. Ito, S. Endo, S. Takada, J. Koga, T. Yoshioka, T. Ino, K. Asahi, T. Momose, T. Iwata, K. Sakai, T. Oku, A. Kimura, M. Hino, T. Shima, and Y. Yamagata
    • Journal Title

      JPS Conference Proceeding

      Volume: 22

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 中性子デバイス2021

    • Author(s)
      奥 隆之
    • Organizer
      MLFシンポジウム
    • Related Report
      2020 Annual Research Report
  • [Presentation] Development and application of a spin-exchange optical pumping He-3 neutron spin filter at J-PARC2020

    • Author(s)
      Takayuki Oku
    • Organizer
      ESS Polarisation Workshop
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Development and application of a SEOP-based 3He spin filter at J-PARC2020

    • Author(s)
      Takayuki Oku
    • Organizer
      2020 Neutron Polarization Workshop
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Development and application of a spin-exchange optical pumping 3He neutron spin filter at J-PARC2019

    • Author(s)
      Takayuki Oku
    • Organizer
      中性子散乱アジア・オセアニア会議
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] A neutron depolarization measurement of a single crystal Fe by using a 3He neutron spin filter and magnetic super-mirrors2019

    • Author(s)
      Takayuki Oku
    • Organizer
      3rd J-PARC Symposium
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 単結晶鉄試料の透過中性子偏極度解析実験2018

    • Author(s)
      奥隆之
    • Organizer
      日本中性子科学会
    • Related Report
      2018 Research-status Report
  • [Presentation] A neutron depolarization measurement of a single crystal Fe by using a 3He neutron spin filter and magnetic super-mirrors2018

    • Author(s)
      T. Oku
    • Organizer
      Polarized Neutrons for Condensed Matter Investigations (PNCMI)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research

URL: 

Published: 2018-04-23   Modified: 2022-01-27  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi