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Surface NMR experiment by a hyperpolarized molecular beam

Research Project

Project/Area Number 20K21148
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 29:Applied condensed matter physics and related fields
Research InstitutionNational Institute for Materials Science

Principal Investigator

Kurahashi Mitsunori  国立研究開発法人物質・材料研究機構, 先端材料解析研究拠点, 主席研究員 (10354359)

Co-Investigator(Kenkyū-buntansha) 後藤 敦  国立研究開発法人物質・材料研究機構, 先端材料解析研究拠点, グループリーダー (30354369)
Project Period (FY) 2020-07-30 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2020: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords表面 / 水素 / 核磁気共鳴 / 偏極ビーム / 核スピン / NMR
Outline of Research at the Start

表面の水素原子の化学状態分析は表面科学における重要課題の一つである。NMRを表面水素分析に利用できればこの問題解決に大きく貢献できると予想されるが、1原子層相当の試料を通常のNMR実験により分析することは検出感度的に困難と考えられている。本研究では、核スピン偏極によりNMR信号を増強させる超偏極NMR法に着目し、核スピン偏極水素分子ビームの開発と、これを用いて表面に分子を吸着させ、プロトンNMR信号を検出するための装置を開発する。

Outline of Final Research Achievements

NMR is known to be a powerful tool for analyzing chemical states of elements. Its application to the analysis of hydrogen on surfaces would provide valuable information on the surface chemical processes. However, detection of NMR signals from a sample with submonolayer thickness has been considered to be difficult due to the low sensitivity of the conventional NMR measurement. Hyperpolarization has attracted much attentions since it greatly enhances the intensity of the NMR signal. The purpose of the present study is to construct an instrument which allows us to irradiate a sample surface with a hyperpolarized molecular beam and detect the NMR signal from the polarized nucleus. A hyperpolarized molecular molecular beam generated with a use of a hexapole magnet was combined with an UHV NMR apparatus, and its performance was tested with bulk samples.

Academic Significance and Societal Importance of the Research Achievements

表面の水素原子の位置や化学状態の計測は、表面物性や多くの物理化学現象の理解に不可欠である。NMRは局所状態分析能が高く、様々な材料研究に応用されているが、感度が不十分のために表面分析への応用は極めて限定的で報告例はXeなど特殊な系に限られている。表面に存在する水素原子のNMR測定を実現できれば今後の表面水素研究の重要な手段となり得るが、この問題に挑戦するための実験装置を今回の研究を通じて製作することができた。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (21 results)

All 2023 2022 2021 2020 Other

All Journal Article (6 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 6 results,  Open Access: 2 results) Presentation (11 results) (of which Int'l Joint Research: 3 results,  Invited: 5 results) Remarks (3 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Spin-dependent metastable He atom scattering from ferromagnetic surfaces: Potential application to polarized-gas production2023

    • Author(s)
      Maruyama Haruka、Kurahashi Mitsunori、Asakawa Kanta、Hatakeyama Atsushi
    • Journal Title

      Physical Review A

      Volume: 107 Issue: 2

    • DOI

      10.1103/physreva.107.022811

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Spin and alignment effects in O2 chemisorption on Fe(110), Ni(111), and Co(0001) films grown on W(110)2022

    • Author(s)
      Kurahashi Mitsunori
    • Journal Title

      The Journal of Chemical Physics

      Volume: 157 Issue: 12 Pages: 124703-124703

    • DOI

      10.1063/5.0111934

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Probing Copper and Copper-Gold Alloy Surfaces with Space-Quantized Oxygen Molecular Beam2022

    • Author(s)
      Tsuda Yasutaka、Gueriba Jessiel Siaron、Ueta Hirokazu、Dino Wilson Agerico、Kurahashi Mitsunori、Okada Michio
    • Journal Title

      JACS Au

      Volume: 2 Issue: 8 Pages: 1839-1847

    • DOI

      10.1021/jacsau.2c00156

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Alignment and impact angular dependence to O2 sticking and dissociation on Pt(111) and close-packed steps2022

    • Author(s)
      de Willigen Maatje J. E.、Kurahashi Mitsunori、Juurlink Ludo B. F.
    • Journal Title

      Physical Chemistry Chemical Physics

      Volume: 24 Issue: 30 Pages: 18227-18235

    • DOI

      10.1039/d2cp00934j

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Observation of a Half-Metallic Interface State for Pyridine-Adsorbed H/Fe3O4(100)2021

    • Author(s)
      Kurahashi Mitsunori、Sun Xia
    • Journal Title

      The Journal of Physical Chemistry Letters

      Volume: 12 Issue: 35 Pages: 8489-8494

    • DOI

      10.1021/acs.jpclett.1c02391

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Use of hexapole magnet and spin flipper combined with time-of-flight analysis to characterize state-selected paramagnetic atomic/molecular beams2021

    • Author(s)
      Kurahashi Mitsunori
    • Journal Title

      Review of Scientific Instruments

      Volume: 92 Issue: 1 Pages: 013201-013201

    • DOI

      10.1063/5.0031903

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] 量子状態選別分子ビームによる白金ステップ表面でのO2吸着、CO酸化反応解析2023

    • Author(s)
      倉橋 光紀
    • Organizer
      日本物理学会 2023年春季大会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 強磁性薄膜表面で散乱された準安定ヘリウム原子のスピン偏極計測:固体表面を用いたスピン偏極ガス生成に向けて2023

    • Author(s)
      丸山遙香, 倉橋 光紀, 浅川寛太, 畠山温.
    • Organizer
      第3回 新方式精密計測による物理・工学的変革を目指す回路技術調査専門委員会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Application of hyperthermal spin and alignment-controlled O2 beam to surface reaction analysis.2022

    • Author(s)
      Mitsunori Kurahashi
    • Organizer
      The 11th International Conference on Reactive Plasmas / 2022 Gaseous Electronics Conference (ICRP-11 / GEC 2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Scattering of spin polarized metastable helium atoms on ferromagnetic surfaces.2022

    • Author(s)
      丸山遙香, 倉橋 光紀, 浅川寛太, 畠山温
    • Organizer
      The 15th Asia-Pacific Physics Conference (APPC15)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 曲面研磨Pt(111)表面と回転状態選別O2ビームによる PtステップでのO2吸着・反応特性評価.2022

    • Author(s)
      倉橋光紀
    • Organizer
      日本物理学会第77回年次大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 励起原子、配向酸素分子が誘起する表面反応素過程の分析2021

    • Author(s)
      倉橋光紀
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 強磁性薄膜表面で散乱された準安定He原子のスピン偏極計測.2021

    • Author(s)
      丸山遙香, 倉橋 光紀, 浅川寛太, 畠山温
    • Organizer
      第41回 原子衝突学会若手の会
    • Related Report
      2021 Research-status Report
  • [Presentation] Spin polarization measurement of metastable He atoms scattered from Fe3O4(100)2021

    • Author(s)
      H. Maruyama, M. Kurahashi, K. Asakawa, A. Hatakeyama
    • Organizer
      The 9th International Symposium on Surface Science (ISSS-9)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 強磁性薄膜表面で散乱された準安定He原子のスピン偏極計測2021

    • Author(s)
      丸山遥香、倉橋光紀、浅川寛太、畠山温
    • Organizer
      日本物理学会第76回年次大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 量子状態選別O2, H2分子ビームの生成と表面反応計測への応用2020

    • Author(s)
      倉橋光紀
    • Organizer
      第67回応用物理学会春期学術講演会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] ピリジン/H/Fe3O4(100)表面のスピン偏極準安定脱励起分光測定: ハーフメタル的界面状態の観測2020

    • Author(s)
      倉橋光紀、孫霞
    • Organizer
      日本物理学会2020年秋季大会
    • Related Report
      2020 Research-status Report
  • [Remarks]

    • URL

      https://samurai.nims.go.jp/profiles/kurahashi_mitsunori

    • Related Report
      2022 Annual Research Report
  • [Remarks]

    • URL

      https://samurai.nims.go.jp/profiles/kurahashi_mitsunori?locale=ja

    • Related Report
      2021 Research-status Report
  • [Remarks]

    • URL

      https://samurai.nims.go.jp/profiles/kurahashi_mitsunori

    • Related Report
      2020 Research-status Report
  • [Patent(Industrial Property Rights)] 酸化物材料の洗浄装置、および洗浄方法2021

    • Inventor(s)
      倉橋光紀、松田学
    • Industrial Property Rights Holder
      物質・材料研究機構, 住友精密工業株式会社
    • Industrial Property Rights Type
      特許
    • Filing Date
      2021
    • Related Report
      2020 Research-status Report

URL: 

Published: 2020-08-03   Modified: 2025-03-27  

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