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2007 Fiscal Year Annual Research Report

放射光と超高圧技術による地球深部物質の探査

Research Project

Project/Area Number 15GS0215
Research InstitutionEhime University

Principal Investigator

入舩 徹男  Ehime University, 地球深部ダイナミクス研究センター, 教授 (80193704)

Co-Investigator(Kenkyū-buntansha) 井上 徹  愛媛大学, 地球深部ダイナミクス研究センター, 准教授 (00291500)
土屋 卓久  愛媛大学, 地球深部ダイナミクス研究センター, 准教授 (70403863)
大藤 弘明  愛媛大学, 地球深部ダイナミクス研究センター, 助教 (80403864)
山田 朗  愛媛大学, 地球深部ダイナミクス研究センター, 助教 (00346694)
肥後 祐司  (財)高輝度光科学研究センター, 利用研究促進部門, 研究員 (10423435)
Keywords固体地球物理学 / 地殻・マントル物質 / 地球・惑星内部構造 / 放射光,X線,粒子線 / 超高圧
Research Abstract

最終年度の本年度は(1)焼結ダイヤモンドアンビルおよび多結晶ナノダイヤモンド(ヒメダイヤ)を用いた超高圧発生および(2)超音波と放射光実験による弾性波測定技術を更に発展させるとともに、これらの技術を用いてマントル遷移層の化学組成の制約や下部マントル高圧相の相転移に関する研究をおこなった。この結果(1)の焼結ダイヤモンドアンビルを用いた圧力発生においては、目標通り80GPaの圧力を達成した。これは研究開始時の目標(70GPa)を大幅に上回る成果である。一方ヒメダイヤの応用に関しては、6-8-2方式において115GPa程度の圧力発生を確認したが、今年度の目標130GPaの達成には今一歩及ばず、今後の課題とした。
(2)の弾性波速度測定技術も、マントル遷移層のほぼ全域に対応する23GPa,1800K程度の圧力温度条件下での測定が可能になり、本技術を用いてマントル遷移層の主要高圧相であるringwooditeやmajorite、またMORB等の多成分系物質の弾性波速度の測定に世界で初めて成功した。一方でこの技術を多結晶MgOに応用して絶対圧力スケールを確立する試みもおこなわれ、年度内に必要なデータを収集し現在その解析と論文執筆に取りかかっている。
最終年度の成果発表も兼ねて本研究組織が中心となり、アメリカの第3世代放射光実験施設であるAPSにおいて、放射光の高圧地球科学への応用に関するワークショップを開催した。このワークショップには日・米・欧を中心に関連分野の研究者約70名が集まり、この分野の最新の成果の今後の方向について議論された。なお、この成果は代表者の入舩とシカゴ大のWangを編集者として国際誌"High Pressure Research"の特集号として2008年中の出版が予定され、約30編の論文が掲載される予定である。本研究の成果の一部もこの中の5編の論文として掲載の予定である。

  • Research Products

    (48 results)

All 2008 2007

All Journal Article (27 results) (of which Peer Reviewed: 16 results) Presentation (21 results)

  • [Journal Article] Elastic wave velocities and Raman shift of MORB glass at high pressures.2008

    • Author(s)
      Y. Kono
    • Journal Title

      J. Mineral. Petrol. Sci. (in press)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Sound velocities of majorite garnet and the composition of the mantle transition region.2008

    • Author(s)
      T. Irifune
    • Journal Title

      Nature 451

      Pages: 814-817

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] New high-pressure B2 phase of FeS above 180 GPa.2008

    • Author(s)
      N. Sata
    • Journal Title

      Am. Mineral. 93

      Pages: 492-494

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] In situ strength measurements on natural upper-mantle minerals.2008

    • Author(s)
      J. Yamamoto
    • Journal Title

      Phys Chem Minerals (in press)

    • Peer Reviewed
  • [Journal Article] Rh_2O_3(II)-type structures in Ga_2O_3 and In_2O_3 under high pressure.2008

    • Author(s)
      H. Yusa
    • Journal Title

      Phys. Rev. B 77

      Pages: 064107

    • Peer Reviewed
  • [Journal Article] Vibrational properties of δ-AIOOH under pressure.2008

    • Author(s)
      J. Tsuchiya
    • Journal Title

      Am. Mineral. 93

      Pages: 477-482

    • Peer Reviewed
  • [Journal Article] Study for the origin of fractuere of advanced pore-free silicon carbite with damage tolerance.2008

    • Author(s)
      S. Matsuda
    • Journal Title

      J. Ceramic Soc. Japan 116

      Pages: 126-129

    • Peer Reviewed
  • [Journal Article] Elastic wave velocities of (M_<0.91>Fe_<0.09>)_2SiO_4 ringwoodite under P-T conditions of the mantle transition region.2008

    • Author(s)
      Y. Higo
    • Journal Title

      Phys. Earth Planet. Inter. (in press)

    • Peer Reviewed
  • [Journal Article] Anomalous variations in the volume of Fe_<69>Ni_<31> Invar alloys under high pressure and temperature2008

    • Author(s)
      M. Matsushita
    • Journal Title

      Phys. Rev. B. (in press)

    • Peer Reviewed
  • [Journal Article] Synthesis of new cubic C3N4 and BCx phases under high pressure and high temperature.2008

    • Author(s)
      P. V. Zinin
    • Journal Title

      J. Phys.: Condense. Matter. (in press)

    • Peer Reviewed
  • [Journal Article] Spin Transition of Iron in the Earth's Lower Mantle.2008

    • Author(s)
      J.-F. Lin
    • Journal Title

      Phys. Earth Planet. Int. (in press)

    • Peer Reviewed
  • [Journal Article] Temperature derivative of elastic wave velocities in plagioclase (An51±1) above and below the order-disorder transition temperature.2008

    • Author(s)
      Y. Kono
    • Journal Title

      Am. Mineral. (in press)

    • Peer Reviewed
  • [Journal Article] Experimental evidence of sixfold oxygen coordination for phosphorus.2007

    • Author(s)
      F. Brunet
    • Journal Title

      Am. Min. 92

      Pages: 989-993

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Generation of multi-megabar pressure using nano-polycrystalline diamond anvils.2007

    • Author(s)
      Y. Nakamoto
    • Journal Title

      Jap. J. Appl. Phys. 46

      Pages: L640-L641

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] High-pressure creep of serpentine, interseismic deformation, and initiation of subduction.2007

    • Author(s)
      N. Hilairet
    • Journal Title

      Science 318

      Pages: 1910-1913

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Measurements of sound velocity of laser-irradiated iron foils relevant to earth core condition.2007

    • Author(s)
      K. Shigemori
    • Journal Title

      Eur. Phys. J. D44

      Pages: 301-305

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] In situ X-ray experiment on the structure of hydrous Mg-silicate melt under high pressure and high temperature.2007

    • Author(s)
      A. Yamada
    • Journal Title

      Geophys. Res. Lett. 34

      Pages: L10303

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] First principles investigation of the postspinel transition in Mg_2SiO_4.2007

    • Author(s)
      Y. G. Yu
    • Journal Title

      Geophys. Res. Lett. 34

      Pages: L10306

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Seismological constraints on the ultralow velocity zones in the lowermost mantle from core reflected waves.2007

    • Author(s)
      K. Idehara
    • Journal Title

      Phys. Earth Planet. Inter. 165

      Pages: 25-46

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Mechanism of the olivine-ringwoodite transformation in the presence of aqueous fliud.2007

    • Author(s)
      J. Ando
    • Journal Title

      Phys. Chem. Minerals 33

      Pages: 377-382

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Rheology of ε-iron up to 19 GPa and 600 K in the D-DIA.2007

    • Author(s)
      N. Nishiyama
    • Journal Title

      Geophys Res Lett. 34

      Pages: L23304

    • Peer Reviewed
  • [Journal Article] Elastic wave velocities of garnetite with a MORB composition up to 14 GPa.2007

    • Author(s)
      Y. Kono
    • Journal Title

      Geophys Res Lett. 34

      Pages: L14308

    • Peer Reviewed
  • [Journal Article] Hardness and deformation microstructures of nano-polycrystalline diamonds synthesized from various carbons under high pressure and high temperature.2007

    • Author(s)
      H. Sumiya
    • Journal Title

      J. Mater. Res. 22

      Pages: 2345-2351

    • Peer Reviewed
  • [Journal Article] High-pressure-high-temperature phase relations of MgGeO_3: First-principlew calculations.2007

    • Author(s)
      T. Tsuchiya
    • Journal Title

      Phys. Rev. B 76

      Pages: 092105

    • Peer Reviewed
  • [Journal Article] Post-Rh_2O_3(II) transition and the high pressure-temperature phase diagram of gallia: A first-principles and x-ray diffraction study.2007

    • Author(s)
      T. Tsuchiya
    • Journal Title

      Phys. Rev. B 76

      Pages: 174108

    • Peer Reviewed
  • [Journal Article] Structure and elasticity of Cmcm CaIrO_3 and their pressure dependences: Ab initio calculations.2007

    • Author(s)
      T. Tsuchiya
    • Journal Title

      Phys. Rev. B 76

      Pages: 144119

    • Peer Reviewed
  • [Journal Article] Mapping the 660 km discontinuity under Japan Islands using mantle reflected waves.2007

    • Author(s)
      A. Yamada
    • Journal Title

      Earth Sci. Frontiers 14

      Pages: 47-56

    • Peer Reviewed
  • [Presentation] Micro-texture and Structure of High-pressure Quenched Graphite and Related Carbon Materials.2007

    • Author(s)
      H. Ohfuji
    • Organizer
      AGU, Fall Meeting
    • Place of Presentation
      San Francisco, USA
    • Year and Date
      20071210-14
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] Rheology of hcp-iron up to 19 GPa and 600 K in the D-DIA.2007

    • Author(s)
      N. Nishiyama
    • Organizer
      AGU, Fall Meeting
    • Place of Presentation
      San Francisco, USA
    • Year and Date
      20071210-14
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] Water content of magma generated just above the 410 km seismic discontinuity.2007

    • Author(s)
      T. Inoue
    • Organizer
      AGU, Fall Meeting
    • Place of Presentation
      San Francisco, USA
    • Year and Date
      20071210-14
  • [Presentation] Ultrasonic elastic wave velocity measurements of MgO at high pressures and high temperatures with standard-free pressure calibration.2007

    • Author(s)
      Y. Kono
    • Organizer
      AGU, Fall Meeting
    • Place of Presentation
      San Francisco, USA
    • Year and Date
      20071210-14
  • [Presentation] Sound velocities of mantle and subducted slab lithologies: Constraints from combined in situ X-ray and ultrasonic measurements.2007

    • Author(s)
      T. Irifune
    • Organizer
      AGU, Fall Meeting
    • Place of Presentation
      San Francisco, USA
    • Year and Date
      20071210-14
  • [Presentation] Synthesis of large and high-quality nano-polycrystalline diamond and its potential applications to high-pressure mineral physics.2007

    • Author(s)
      T. Irifune
    • Organizer
      International Workshop on Synchrotron High-Pressure Mineral Physcs and Materials Science.
    • Place of Presentation
      Argonne, USA
    • Year and Date
      20071206-07
  • [Presentation] High-pressure and high-temperature experiments using nanocrystalline diamond anvil and laser heating.2007

    • Author(s)
      T. Yagi
    • Organizer
      International Workshop on Synchrotron High-Pressure Mineral Physcs and Materials Science.
    • Place of Presentation
      Argonne, USA
    • Year and Date
      20071206-07
  • [Presentation] Time-resolved X-ray diffraction experiment of dehydration of serpentine at high pressure.2007

    • Author(s)
      T. Inoue
    • Organizer
      International Workshop on Synchrotron High-Pressure Mineral Physcs and Materials Science.
    • Place of Presentation
      Argonne, USA
    • Year and Date
      20071206-07
  • [Presentation] Ultrasonic measurements of polycrystalline MgO and standard-free pressure calibration at high pressures and high temperatures2007

    • Author(s)
      Y. Kono
    • Organizer
      International Workshop on Synchrotron High-Pressure Mineral Physcs and Materials Science.
    • Place of Presentation
      Argonne, USA
    • Year and Date
      20071206-07
  • [Presentation] Density changes of pyrolite and MORB near the 660 km seismic discontinutity by in-situ X-ray diffraction measurements and chemical composition analyses.2007

    • Author(s)
      T. Sanehira
    • Organizer
      International Workshop on Synchrotron High-Pressure Mineral Physcs and Materials Science.
    • Place of Presentation
      Argonne, USA
    • Year and Date
      20071206-07
  • [Presentation] Elastic wave velocity measurements under the condition of lowermost mantle transition region.2007

    • Author(s)
      Y. Higo
    • Organizer
      International Workshop on Synchrotron High-Pressure Mineral Physcs and Materials Science.
    • Place of Presentation
      Argonne, USA
    • Year and Date
      20071206-07
  • [Presentation] Concept of a new large volume D-DIA, "MADONNA.2007

    • Author(s)
      N. Nishiyama
    • Organizer
      International Workshop on Synchrotron High-Pressure Mineral Physcs and Materials Science.
    • Place of Presentation
      Argonne, USA
    • Year and Date
      20071206-07
  • [Presentation] Chemical composition of the mantle transition region: constraints from sound velocity measurement at high pressure and high temperature.2007

    • Author(s)
      T. Irifune
    • Organizer
      Welhelm and Else Heraeus Seminar: Density, Temperature and Elastic Constant of Earth's Mantle II
    • Place of Presentation
      Munich, Germany
    • Year and Date
      20070912-16
  • [Presentation] Elastic wave velocities of pyrolite and MORB at P, T conditions of the mantle transition region, XXIV General Assembly.2007

    • Author(s)
      T. Irifune
    • Organizer
      International Union of Geophysics and Geodesy
    • Place of Presentation
      Perugia, Italy
    • Year and Date
      20070702-13
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] Ultrahard nano-polycrystalline diamond: novel material for high-pressure mineral physics studies.2007

    • Author(s)
      T. Irifune and H. Sumiya
    • Organizer
      International Union of Geophysics and Geodesy
    • Place of Presentation
      Perugia, Italy
    • Year and Date
      20070702-13
  • [Presentation] Compression behavior of phase D and implication to the hydrogen bond symmetrization at high pressure.2007

    • Author(s)
      H. Kagi
    • Organizer
      7th High Pressure Mineral Physics Seminar
    • Place of Presentation
      Matsushima, Japan
    • Year and Date
      20070508-12
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] An investigation on structure of hydrous Mg-silicate melt at high pressure by in-situ X-ray diffraction.2007

    • Author(s)
      A.Yamada
    • Organizer
      7th High Pressure Mineral Physics Seminar
    • Place of Presentation
      Matsushima, Japan
    • Year and Date
      20070508-12
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] Elastic wave velocities of pyrolite and mineralogy of the mantle transition region.2007

    • Author(s)
      Y. Higo
    • Organizer
      7th High Pressure Mineral Physics Seminar
    • Place of Presentation
      Matsushima, Japan
    • Year and Date
      20070508-12
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] Synthesis of ultrahard nano-polycrystalline diamond and its application to high pressure and temperature generation.2007

    • Author(s)
      T. Irifune
    • Organizer
      7th High Pressure Mineral Physics Seminar
    • Place of Presentation
      Matsushima, Japan
    • Year and Date
      20070508-12
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] Dehydration kinetics of serpentine at high pressure and hight emperature.2007

    • Author(s)
      T. Inoue
    • Organizer
      7th High Pressure Mineral Physics Seminar
    • Place of Presentation
      Matsushima, Japan
    • Year and Date
      20070508-12
  • [Presentation] High pressure and temperature generation using polycrystalline diamond anvils.2007

    • Author(s)
      T. Irifune
    • Organizer
      Study of Matter at Extreme Condition 2007 Conference
    • Place of Presentation
      Florida, USA
    • Year and Date
      20070415-20
    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2010-02-04   Modified: 2016-04-21  

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