Rchr
J-GLOBAL ID：200901063903923610
Update date: Nov. 01, 2024
IKUTA Daijo
イクタ ダイジョウ | IKUTA Daijo
Affiliation and department：
Job title：
Super Technician
Other affiliations (3)：
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Tohoku University
Department of Earth Science
Specially Appointed Research Fellow
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Geophysical Laboratory, Carnegie Institution for Science
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Argonne National Laboratory
Research field (1)：
Solid earth science
Research keywords (6)：
Solid Earth Science
, High Pressure Physics
, Geophysics
, Crystallography
, Mineralogy
, Synchrotron Radiation
Research theme for competitive and other funds (5)：
- 2024 - 2028 Determination of the high temperature and high pressure primary pressure scale for solid metals by inelastic x-ray scattering and its applications in Earth science
- 2024 - 2028 Measurement of sound velocity and equation of state of iron alloys at ultrahigh pressure and high temperature and application to the inner core heterogeneity
- 2020 - 2023 Construction of the universal pressure scale to the Earth's core
- 2015 - 2020 Creation of the best model of the Earth's core
- 2003 - 2008 X-ray diffraction study of ultrahigh-pressure metamorphic minerals
Papers (22)：
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D. Ikuta, E. Ohtani, H. Fukui, T. Sakamaki, R. Heid, D. Ishikawa, A. Q. R. Baron. Density deficit of Earth's core revealed by a multimegabar primary pressure scale. Science Advances. 2023. 9. 36. eadh8706
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Q. Wang, H. Lou, Y. Kono, D. Ikuta, Z. Zeng, Q. Zeng. Viscosity anomaly of a metallic glass-forming liquid under high pressure. Journal of Non-Crystalline Solids. 2023. 615. 122412
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D. Ikuta, E. Ohtani, H. Fukui, T. Sakai, D. Ishikawa, A. Q. R. Baron. Sound velocity of hexagonal close-packed iron to the Earth's inner core pressure. Nature Communications. 2022. 13. 7211
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S. Dominijanni, C. A. McCammon, E. Ohtani, D. Ikuta, T. Sakamaki, T. Ishii, G. Criniti, L. S. Dubrovinsky, S. Khandarkhaeva, T. Fedotenko, et al. Sound velocity measurements of B2-Fe-Ni-Si alloy under high pressure by inelastic x-ray scattering: Implications for the composition of Earth's core. Geophysical Research Letters. 2022. 49. 15. e2021GL096405
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D. Ikuta, E. Ohtani, N. Hirao. Two-phase mixture of iron-nickel-silicon alloys in the Earth's inner core. Communications Earth & Environment. 2021. 2. 225
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MISC (3)：
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D. Ikuta, E. Ohtani, A. Q. R. Baron. Density deficit of the Earth's inner core revealed by a multi-megabar rhenium primary pressure scale. SPring-8/SACLA Research Frontiers. 2024. 2023. 102-103
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D. Ikuta, E. Ohtani, H. Fukui, T. Sakamaki, R. Heid, D. Ishikawa, A. Q. R. Baron. Density deficit of the Earth's core revealed by a multi-megabar primary pressure scale. arXiv. 2024. 2021. 02076v3
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D. Ikuta, E. Ohtani, A. Q. R. Baron. Sound velocity of hexagonal close-packed iron to the Earth's inner core pressure. SPring-8/SACLA Research Frontiers. 2023. 2022. 106-107
Lectures and oral presentations (63)：
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Sound velocity of B2 phase of Fe-Ni-Si alloys at high pressure and high temperature and constitution of the Earth's inner core
(2024 Annual Meeting of Japan Association of Mineralogical Sciences)
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IXS measurements in extreme pressure conditions and the implications for the Earth's core
(13th International Conference on Inelastic X-ray Scattering)
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Sound velocities of the hydrous iron-rich HH1-phase: Implication for the lower mantle seismic heterogeneities
(Japan Geosciecne Union Meeting 2024)
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Sound velocity measurement for high-pressure phase of iron sulfide compounds at high pressure and high temperature
(Japan Geosciecne Union Meeting 2024)
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Sound velocity measurements under extreme pressure conditions by inelastic x-ray scattering
(SPring-8 Users Community (SPRUC) Momentum-Resolved Spectroscopy Group Meeting FY2023)
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Education (2)：
- 2005 - 2008 Kyoto University Graduate School of Human and Environmental Studies (Department of Interdisciplinary Environment) Doctor Course
- 2003 - 2005 Kyoto University Graduate School of Human and Environmental Studies (Department of Interdisciplinary Environment) Master Course
Professional career (1)：
Work history (3)：
- 2022/12 - 現在 Okayama University Institute for Planetary Materials
- 2016/09 - 2022/11 Tohoku University Department of Earth Science
- 2007/07 - 2016/08 Geophysical Laboratory, Carnegie Institution for Science High Pressure Collaborative Access Team
Association Membership(s) (2)：
Japan Society of High Pressure Science and Technology
, Japan Geoscience Union
