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Atomic scale diffusion dynamics of hydrogen in deep-Earth minerals by pulsed neutron scattering

Research Project

Project/Area Number 17F17331
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section外国
Research Field Petrology/Mineralogy/Economic geology
Research InstitutionOkayama University

Principal Investigator

奥地 拓生  岡山大学, 惑星物質研究所, 准教授 (40303599)

Co-Investigator(Kenkyū-buntansha) PUREVJAV NARANGOO  岡山大学, 惑星物質研究所, 外国人特別研究員
PUREVJAV Narangoo  岡山大学, 惑星物質研究所, 外国人特別研究員
Project Period (FY) 2017-11-10 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 2019: ¥200,000 (Direct Cost: ¥200,000)
Fiscal Year 2018: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2017: ¥1,000,000 (Direct Cost: ¥1,000,000)
Keywordsneutron scattering / hydrogen dynamics / crystal structure / DHMS Phase E / hydrous bridgmanite / DHMS phase E / 単結晶中性子回折 / 中性子準弾性散乱 / hydrous ringwoodite
Outline of Annual Research Achievements

The research achevements in this year consisted of two series of neutron scattering experimental results, which are quasielastic neutron scattering (QENS) and single crystal neutron diffraction (SCND). The QENS analysis of hydrogen in dense hydrous magnesium silicate (DHMS) phase E was conducted at BL2 at MLF, J-PARC. Atomic-scale diffusion dynamics of hydrogen was successfully determined as a function of temperature up to 530 K. The SCND measurement of a fully-deuterated DHMS phase E crystal was conducted at BL12 at Spallation Neutron Source, Oak Ridge National Laboratory in last year. This year, by systematically analyzing the obtained diffraction dataset, we fully resolved its crystal structure with very high resolution in space (dmin =0.5). The site position of deuterium, its chemical bonding geometry, as well as its incorporation mechanism into the crystal structure were deterimned and published. We made a few presentations in domestic and international meetings to present the described results and progress.

Research Progress Status

令和元年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和元年度が最終年度であるため、記入しない。

Report

(3 results)
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (13 results)

All 2020 2019 2018 Other

All Int'l Joint Research (2 results) Journal Article (2 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (9 results) (of which Int'l Joint Research: 4 results,  Invited: 1 results)

  • [Int'l Joint Research] オークリッジ国立研究所(米国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] オークリッジ国立研究所(米国)

    • Related Report
      2017 Annual Research Report
  • [Journal Article] Strong hydrogen bonding in a dense hydrous magnesium silicate discovered by neutron Laue diffraction2020

    • Author(s)
      Purevjav Narangoo, Okuchi Takuo, Hoffmann Christina
    • Journal Title

      IUCrJ

      Volume: 7 Issue: 3 Pages: 370-374

    • DOI

      10.1107/s2052252520003036

    • NAID

      120006860114

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Determination of hydrogen site and occupancy in hydrous Mg2SiO4 spinel by single-crystal neutron diffraction2018

    • Author(s)
      N. Purevjav, T. Okuchi, X. Wang, C. Hoffmann, N. Tomioka
    • Journal Title

      Acta Crystallographica Section B

      Volume: 74 Issue: 1 Pages: 115-120

    • DOI

      10.1107/s2052520618000616

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 中性子散乱による地球深部鉱物の水素配置と水素拡散の統合解析2019

    • Author(s)
      奥地拓生・プレジャブナランゴー・瀬戸雄介・富岡尚敬・柴田薫・山田武
    • Organizer
      鉱物科学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Strong hydrogen-bond generation in dense hydrous magnesium silicate phase E observed by single-crystal neutron diffraction2019

    • Author(s)
      N. Purevjav, T. Okuchi, C. Hoffmann
    • Organizer
      Japan Geoscience Union Meeting 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] パルス中性子を使った地球深部水素の単結晶構造解析とダイナミクス解析2019

    • Author(s)
      奥地拓生
    • Organizer
      ATI水和ナノ構造研究会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Probing hydrogen by single-crystal neutron diffraction in deep mantle hydrous minerals2019

    • Author(s)
      N. Purevjav, T. Okuchi, N. Tomioka, X. Wang, C. Hoffmann
    • Organizer
      Joint symposium of Misasa 2019 & Core Mantle Coevolution
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 中性子散乱による地球深部鉱物の水素配置と水素拡散の統合解析2018

    • Author(s)
      奥地拓生・プレジャブナランゴー・富岡尚敬・土山明・柴田薫
    • Organizer
      日本中性子科学会第18回年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 含水非晶質ケイ酸塩微粒子の中性子による水素拡散解析(低温編)2018

    • Author(s)
      奥地拓生・プレジャブナランゴー・富岡尚敬・土山明・柴田薫
    • Organizer
      日本鉱物科学会2018年年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Storage mechanisms of water into ringwoodite2018

    • Author(s)
      N. Purevjav, T. Okuchi, N. Tomioka, X. Wang, C. Hoffmann
    • Organizer
      American Geophysical Union Fall Meeting 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Single crystal neutron diffraction study of dense hydrous magnesium silicate phase E2018

    • Author(s)
      N. Purevjav, T. Okuchi, Y. Seto, T. Ohhara, K. Munakata
    • Organizer
      日本鉱物科学会2018年年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Locating hydrogen in lower mantle transition zone hydrous ringwoodite2018

    • Author(s)
      N. Purevjav, T. Okuchi, X. Wang, C. Hoffmann, N. Tomioka
    • Organizer
      Japan Geoscience Union Meeting 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research

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Published: 2017-11-13   Modified: 2024-03-26  

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