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Neutron irradiation effects on spin thermoelectric devices and development of neutron detector

Research Project

Project/Area Number 21K12526
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

Okayasu Satoru  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 原子力科学研究所 先端基礎研究センター, 研究員 (50354824)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2022: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2021: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywordsスピントロニクス / 中性子 / 熱電変換 / スピン熱電素子 / 耐放射線特性 / 熱電素子
Outline of Research at the Start

放射線に強い新しいエレクトロニクスデバイス技術として考えられているスピントロニクス応用のひとつとして、放射線環境下での熱電変換の実用化を目指している。有力な候補のひとつとして考えられているのがスピンゼーベック効果を利用したスピン熱電変換素子で、すでにガンマ線や重イオンに対する高い耐放射線特性が実証されている。本研究では同素子の中性子照射特性を検証し、放射線環境下での熱電変換技術の確立を目指す。また本研究で得られる知見を基に、簡便な中性子検出器開発の可能性についても探る。

Outline of Final Research Achievements

We conducted research and development on the application of thermoelectric elements using spintronics technology, which is thought to have excellent radiation resistance properties, to the nuclear field. Previous studies have shown that spin thermoelectric elements are highly resistant to gamma rays, but not neutrons. In the first half of this study, the resistance to neutron irradiation was verified. Based on these results, in the second half, we attempted to detect the nuclear reaction heat of neutrons and boron-10 with a spin thermoelectric element. However, at present, the signal was small and buried in noise and could not be detected. Currently, we are improving the element and reviewing the detection method, and continue to detect signals.

Academic Significance and Societal Importance of the Research Achievements

ごく狭義には、福島第一原発事故の作業現場での簡易な中性子線量測定に資するもので、廃炉作業への進展を促すものと考えている。また本技術を利用して高線量下でも熱電変換による電源確保が可能となり、原子炉の安全性の向上にも寄与すると期待している。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (8 results)

All 2024 2023 2022 2021

All Journal Article (3 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (4 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Modification of Cu Oxide and Cu Nitride Films by Energetic Ion Impact2024

    • Author(s)
      Matsunami Noriaki、Sataka Masao、Okayasu Satoru、Tsuchiya Bun
    • Journal Title

      Quantum Beam Science

      Volume: 8 Issue: 2 Pages: 12-12

    • DOI

      10.3390/qubs8020012

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The damage analysis for irradiation tolerant spin-driven thermoelectric device based on single-crystalline Y3Fe5O12/Pt heterostructures2022

    • Author(s)
      Ieda Jun'ichi、Okayasu Satoru、Harii Kazuya、Kobata Masaaki、Yoshii Kenji、Fukuda Tatsuo、Ishida Masahiko、Saitoh Eiji
    • Journal Title

      IEEE Transactions on Magnetics

      Volume: 31 Issue: 8 Pages: 1-1

    • DOI

      10.1109/tmag.2022.3145888

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Peak Effects in 2H-NbSe2 Single Crystals Induced by Particle Irradiations2021

    • Author(s)
      Wenjie Li, Sunseng Pyon, Satoru Okayasu, and Tsuyoshi Tamegai,
    • Journal Title

      J. Phys.: Conf. Ser.

      Volume: 1975 Issue: 1 Pages: 012017-012022

    • DOI

      10.1088/1742-6596/1975/1/012003

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Anomalous peak effect in (Ba,A)Fe2As2 (A: Rb, K) single crystals with splayed columnar defects2022

    • Author(s)
      Yuhang Zu, Tong Ren, Sunseng Pyon, Satoru Okayasu, and Tsuyoshi Tamegai
    • Organizer
      第77回日本物理学会年会
    • Related Report
      2022 Research-status Report
  • [Presentation] スピン熱電素子の耐ガンマ線照射耐性2022

    • Author(s)
      岡安 悟, 武山昭憲, 大島武, 針井一哉, 家田淳一, 石田真彦, 齊藤英治
    • Organizer
      日本物理学会 第77回年次大会
    • Related Report
      2021 Research-status Report
  • [Presentation] スピンゼーベック効果素子の高エネルギー重イオン照射耐性2021

    • Author(s)
      岡安 悟, 針井一哉, 家田淳一, 小野正雄, 小畠雅明, 福田竜生, 吉井賢資, 石田真彦, 齊藤英治
    • Organizer
      日本物理学会 2021年秋季大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 高エネルギー重イオン照射によるLuIGの磁気特性変化2021

    • Author(s)
      針井 一哉,岡安 悟,埋田 真樹,佐藤 奈々, 有沢 洋希,日置 友智, 家田 淳一
    • Organizer
      日本応用物理学会 2021年秋
    • Related Report
      2021 Research-status Report
  • [Patent(Industrial Property Rights)] 熱電変換システム、熱電変換方法2023

    • Inventor(s)
      岡安 悟
    • Industrial Property Rights Holder
      日本原子力研究開発機構
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2019-215283
    • Filing Date
      2023
    • Related Report
      2023 Annual Research Report

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Published: 2021-04-28   Modified: 2025-01-30  

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