Faculty Profiles - TERASAKI Hidenori

Papers - TERASAKI Hidenori

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Development of density measurement at high pressure and high temperature using the x-ray absorption method combined with laser-heated diamond anvil cell Reviewed

Hidenori Terasaki, Hiroyuki Kamina, Saori I. Kawaguchi, Tadashi Kondo, Ko Morioka, Ryo Tsuruoka, Moe Sakurai, Akira Yoneda, Seiji Kamada, Naohisa Hirao

Review of Scientific Instruments 96 ( 3 ) 033907 2025.3

Authorship：Lead author,　Corresponding author Language：English Publishing type：Research paper (scientific journal) Publisher：AIP Publishing

The densities of liquid materials at high pressures and high temperatures are important information to understand the elastic behavior of liquids at extreme conditions, which is closely related to the formation and evolution processes of the Earth and planetary interiors. The x-ray absorption method is an effective method to measure the density of non-crystalline materials at high pressures. However, the temperature condition of the x-ray absorption method using a diamond anvil cell (DAC) has been limited to 720 K to date. To significantly expand the measurable temperature condition of this method, in this study, we developed a density measurement technique using the x-ray absorption method in combination with a laser-heated DAC. The density of solid Ni was measured up to 26 GPa and 1800 K using the x-ray absorption method and evaluated by comparison with the density obtained from the x-ray diffraction. The density of solid Ni with a thickness &gt;17 μm was determined with an accuracy of 0.01%–2.2% (0.001–0.20 g/cm3) and a precision of 0.8%–1.8% (0.07–0.16 g/cm3) in the x-ray absorption method. The density of liquid Ni was also determined to be 8.70 ± 0.15–8.98 ± 0.38 g/cm3 at 16–23 GPa and 2230–2480 K. Consequently, the temperature limit of the x-ray absorption method can be expanded from 720 to 2480 K by combining it with a laser-heated DAC in this study.

DOI： 10.1063/5.0223133

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The extent of liquid immiscibility in planetesimal cores Reviewed

G.D. Bromiley, M. Varnam, H. Terasaki, T. Komabayashi, J. Barosch

Geochemical Perspectives Letters 33 7 - 12 2024.11

Wetting property of Fe–S melt in solid core: Implication for the core crystallization process in planetesimals Reviewed International journal

Shiori Matsubara, Hidenori Terasaki, Takashi Yoshino, Satoru Urakawa, Daisuke Yumitori

Meteoritics and Planetary Science 2024.3

Deuterium Content and Site Occupancy in Iron Sulfide at High Pressure and Temperature Determined Using In Situ Neutron Diffraction Measurements Reviewed International coauthorship International journal

Sumith Abeykoon, Christopher Howard, Serena Dominijanni, Lisa Eberhard, Alexander Kurnosov, Daniel J. Frost, Tiziana Boffa Ballaran, Hidenori Terasaki, Tatsuya Sakamaki, Akio Suzuki, Eiji Ohtani, Asami Sano‐Furukawa, Jun Abe

Journal of Geophysical Research: Solid Earth 128 ( 9 ) 2023.9

Language：English Publishing type：Research paper (scientific journal) Publisher：American Geophysical Union (AGU)

Abstract

We have performed in situ time‐of‐flight neutron diffraction experiments to examine the uptake of deuterium in iron monosulfide at pressures up to 11.4 GPa and temperatures to 1300 K. A D₂ fluid was formed in the experiments through the decomposition of ND₃BD₃, resulting in an oxygen fugacity of approximately 1.2 log units below the iron‐wüstite buffer. Deuterium positions and site occupancies were determined in FeS V, using Rietveld refinements of the powder neutron diffraction patterns. Our structural model indicates that two normally unoccupied sites in the P6₃/mmc FeS V structure, at Wyckoff positions 6h and 4f, are partially occupied by D atoms, with the latter being more dominant. The deuterium content D_x in FeSD_X increases with both pressure and temperature over the experimental conditions explored, from 0.126 (14) at 2.3 GPa and 787 K to 1.20 (16) at 9.7 GPa and 1300 K. The unit‐cell volume expansion per deuterium atom is 1.53 ± 0.16 Å³ at 6.9 GPa and 960 K, which is smaller than that determined for metallic iron phases at similar conditions. The variation in unit‐cell volume indicates that most deuterium is lost from FeS V upon temperature quenching at high‐pressures. By fitting the obtained FeS V deuterium site occupancies to a thermodynamic model, estimates for the hydrogen contents of iron monosulfide at conditions and oxygen fugacities consistent with the base of the cratonic lithosphere can be made. This results in values in the range of 1,700–2,700 ppm, which contribute to approximately 2–3 ppm hydrogen in the bulk mantle.

DOI： 10.1029/2023jb026710

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Density Measurements of Fe-Ni-S Liquids at High Pressure Reviewed

Satoru Urakawa, Hidenori Terasaki, Syun-pachi Kishimoto, Naonori Inoue, Yuta Shimoyama, Yusaku Takubo, Akihiko Machida

SPring-8/SACLA Research Report 11 218 - 220 2023.8

Sound velocity and elastic properties of Fe–Ni–S–Si liquid: the effects of pressure and multiple light elements Reviewed International journal

Iori Yamada, Hidenori Terasaki, Satoru Urakawa, Tadashi Kondo, Akihiko Machida, Yoshinori Tange, Yuji Higo

Physics and Chemistry of Minerals 50 ( 3 ) 2023.7

Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal) Publisher：Springer Science and Business Media LLC

Abstract

Fe–Ni–S–Si alloy is considered to be one of the plausible candidates of Mercury core material. Elastic properties of Fe–Ni–S–Si liquid are important to reveal the density profile of the Mercury core. In this study, we measured the P-wave velocity (V_P) of Fe–Ni–S–Si (Fe₇₃Ni₁₀S₁₀Si₇, Fe₇₂Ni₁₀S₅Si₁₃, and Fe₆₇Ni₁₀S₁₀Si₁₃) liquids up to 17 GPa and 2000 K to study the effects of pressure, temperature, and multiple light elements (S and Si) on the V_P and elastic properties.

The V_P of Fe–Ni–S–Si liquids are less sensitive to temperature. The effect of pressure on the V_P are close to that of liquid Fe and smaller than those of Fe–Ni–S and Fe–Ni–Si liquids. Obtained elastic properties are K_S0 = 99.1(9.4) GPa, K_S’ = 3.8(0.1) and ρ₀ =6.48 g/cm³ for S-rich Fe₇₃Ni₁₀S₁₀Si₇ liquid and K_S0 = 112.1(1.5) GPa, K_S’ = 4.0(0.1) and ρ₀=6.64 g/cm³ for Si-rich Fe₇₂Ni₁₀S₅Si₁₃ liquid. The V_P of Fe–Ni–S–Si liquids locate in between those of Fe–Ni–S and Fe–Ni–Si liquids. This suggests that the effect of multiple light element (S and Si) on the V_P is suppressed and cancel out the effects of single light elements (S and Si) on the V_P. The effect of composition on the EOS in the Fe–Ni–S–Si system is indispensable to estimate the core composition combined with the geodesy data of upcoming Mercury mission.

DOI： 10.1007/s00269-023-01243-8

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Other Link： https://link.springer.com/article/10.1007/s00269-023-01243-8/fulltext.html

Density and elastic properties of liquid gallium up to 10 GPa using X-ray absorption method combined with externally heated diamond anvil cell Reviewed International journal

Ryo Tsuruoka, Hidenori Terasaki, Seiji Kamada, Fumiya Maeda, Tadashi Kondo, Naohisa Hirao, Saori I. Kawaguchi, Iori Yamada, Satoru Urakawa, Akihiko Machida

High Pressure Research 41 ( 4 ) 379 - 391 2021.10

Language：English Publishing type：Research paper (scientific journal) Publisher：Informa UK Limited

The density of liquid metals at high pressure and high-temperature provides fundamental and important information for understanding their compression behavior and elastic properties. In this study, the densities of liquid gallium (Ga) were measured up to 10 GPa and 533 K using the X-ray absorption method combined with an externally heated diamond anvil cell. The elastic properties (the isothermal bulk modulus (K-T0), and its pressure derivative (K-T0')) of liquid Ga were obtained by fitting the density data with three equations of state (EOSs) (Murnaghan, third order Birch-Murnaghan, and Vinet). The K-T0 values of liquid Ga were determined to be 45.7 +/- 1.0-51.7 +/- 1.0 GPa at 500 K assuming K-T0' values of 4-6. The obtained K-T0 or K-T0 ' showed almost the same values regardless of the EOS used. Compared with previous results, the compression curve of liquid Ga obtained in this study had a slightly stiffer trend at higher pressures.

DOI： 10.1080/08957959.2021.1998478

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In situ observation of the Rayleigh–Taylor instability of liquid Fe and Fe–Si alloys under extreme conditions: Implications for planetary core formation Reviewed International journal

Hidenori Terasaki, Tatsuhiro Sakaiya, Keisuke Shigemori, Kosaku Akimoto, Hiroki Kato, Yoichiro Hironaka, Tadashi Kondo

Matter and Radiation at Extremes 6 ( 5 ) 054403 - 054403 2021.9

Precise determination of the effect of temperature on the density of solid and liquid iron, nickel, and tin Reviewed International journal

Asaka Kamiya, Hidenori Terasaki, Tadashi Kondo

American Mineralogist 106 ( 7 ) 1077 - 1082 2021.7

Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal) Publisher：Mineralogical Society of America

<title>Abstract</title>
Density and thermal expansion coefficient of metals are fundamental characteristics to describe the equation of state. Especially for liquid metals, the reported data for density and thermal expansion coefficient vary in the literature, even at ambient pressure. To determine the density of solid and liquid metals precisely at high temperatures and ambient pressure, we have developed a high-temperature furnace. The densities of solid Sn, Ni, and Fe were determined from the sample image with an uncertainty of 0.11–0.7% in the temperature range of 285–1803 K with increments of 1–10 K. The density of solid Sn decreased linearly with increasing temperature up to 493 K, and then the decrease became drastic until the melting temperature (Tm) was reached. By contrast, for solid Ni and Fe, the densities decreased linearly with increasing temperature up to the Tm (1728 and 1813 K) without any drastic density drop near Tm. This suggests that Ni and Fe do not exhibit the “premelting effect.”

The density of liquid Fe was determined with an uncertainty of 0.4–0.7% in the range of 1818–1998 K with temperature increments of 5 K. The obtained thermal expansion coefficient (α) of liquid Fe was well approximated as either a constant value of α = 2.42(1) × 10–4 K–1 or a linear function of temperature (T); α = 1.37(10) × 10–3 – [6.0(6) × 10–7]T [K–1] up to at least 2000 K.

DOI： 10.2138/am-2021-7509

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Thermocapillary effects in two-phase medium and applications to metal-silicate separation Reviewed International coauthorship International journal

Yanick Ricard, Stéphane Labrosse, Hidenori Terasaki, David Bercovici

Physics of the Earth and Planetary Interiors 311 106640 - 106640 2021.2

Effect of sulfur on sound velocity of liquid iron under Martian core conditions Reviewed International journal

Keisuke Nishida, Yuki Shibazaki, Hidenori Terasaki, Yuji Higo, Akio Suzuki, Nobumasa Funamori, Kei Hirose

Nature Communications 11 ( 1 ) 2020.12

Surface structure on diamond foils generated by spatially nonuniform laser irradiation Reviewed International journal

Hiroki Kato, Hideo Nagatomo, Mitsuo Nakai, Tatsuhiro Sakaiya, Hidenori Terasaki, Tadashi Kondo, Yoichiro Hironaka, Katsuya Shimizu, Keisuke Shigemori

Scientific Reports 10 ( 1 ) 2020.12

Language：English Publishing type：Research paper (scientific journal) Publisher：Springer Science and Business Media LLC

<title>Abstract</title>Here we report on the effects of material strength factors on the generation of surface structure due to nonuniform laser irradiation. The influence of material strength on the generation of perturbation on a diamond surface subjected to nonuniform laser irradiation was experimentally investigated. Our previous investigations suggested that stiffer and denser materials reduce surface perturbation due to spatially nonuniform laser irradiation, which was reproduced well by calculations with multi-dimensional hydrodynamic simulation code. In this work, we found that local fractures due to yield strength failure are generated by high degrees of irradiation non-uniformity. A characteristic crack-like surface structure was observed, which was not reproduced by the 2D simulation code calculations at all. The 2D simulations showed that the pressure at the diamond surface locally exceeds the Hugoniot elastic limit due to nonuniform irradiation, implying the potential for development of surface perturbations. We also measured the areal-density distribution of perturbations for single-crystal diamond and diamond with a thin high atomic number (high-Z) coating on its surface. The experimental results imply that the combination of a stiff material and thin high-Z coating can suppress the solid-strength effects caused by large irradiation non-uniformity. The knowledge given here is applicable to inertial confinement fusion target design, laser material processing, and universal problems involving solids and high-energy-density plasmas.

DOI： 10.1038/s41598-020-66036-3

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Other Link： http://www.nature.com/articles/s41598-020-66036-3

Physical Properties and Composition of Cores of Terrestrial Planets Reviewed

Hidenori TERASAKI

The Review of High Pressure Science and Technology 30 ( 2 ) 111 - 117 2020

Pressure and composition effects on sound velocity and density of core-forming liquids: Implication to core compositions of terrestrial planets Reviewed International coauthorship

H. Terasaki, A. Rivoldini, Y. Shimoyama, K. Nishida, S. Urakawa, M. Maki, F. Kurokawa, Y. Takubo, Y. Shibazaki, T. Sakamaki, A. Machida, Y. Higo, K. Uesugi, A. Takeuchi, T. Watanuki, T. Kondo

Journal of Geophysical Research: Planets 124 2272 - 2293 2019.9

Interstitial hydrogen atoms in face-centered cubic iron in the Earth's core Reviewed

Ikuta Daijo, Ohtani Eiji, Sano-Furukawa Asami, Shibazaki Yuki, Terasaki Hidenori, Yuan Liang, Hattori Takanori

SCIENTIFIC REPORTS 9 ( 1 ) 2019.5

Publishing type：Research paper (scientific journal) Publisher：Springer Science and Business Media LLC

Abstract

Hydrogen is likely one of the light elements in the Earth’s core. Despite its importance, no direct observation has been made of hydrogen in an iron lattice at high pressure. We made the first direct determination of site occupancy and volume of interstitial hydrogen in a face-centered cubic (fcc) iron lattice up to 12 GPa and 1200 K using the in situ neutron diffraction method. The transition temperatures from the body-centered cubic and the double-hexagonal close-packed phases to the fcc phase were higher than reported previously. At pressures <5 GPa, the hydrogen content in the fcc iron hydride lattice (x) was small at x < 0.3, but increased to x > 0.8 with increasing pressure. Hydrogen atoms occupy both octahedral (O) and tetrahedral (T) sites; typically 0.870(±0.047) in O-sites and 0.057(±0.035) in T-sites at 12 GPa and 1200 K. The fcc lattice expanded approximately linearly at a rate of 2.22(±0.36) Å³ per hydrogen atom, which is higher than previously estimated (1.9 Å³/H). The lattice expansion by hydrogen dissolution was negligibly dependent on pressure. The large lattice expansion by interstitial hydrogen reduced the estimated hydrogen content in the Earth’s core that accounted for the density deficit of the core. The revised analyses indicate that whole core may contain hydrogen of 80(±31) times of the ocean mass with 79(±30) and 0.8(±0.3) ocean mass for the outer and inner cores, respectively.

DOI： 10.1038/s41598-019-43601-z

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Other Link： https://www.nature.com/articles/s41598-019-43601-z

Sound velocity and density of liquid Ni68S32 under pressure using ultrasonic and X-ray absorption with tomography methods Reviewed

Terasaki Hidenori, Nishida Keisuke, Urakawa Satoru, Takubo Yusaku, Kuwabara Soma, Shimoyama Yuta, Uesugi Kentaro, Kono Yoshio, Takeuchi Akihisa, Suzuki Yoshio, Higo Yuji, Kondo Tadashi

COMPTES RENDUS GEOSCIENCE 351 ( 2-3 ) 163 - 170 2019.2

Language：English Publishing type：Research paper (scientific journal) Publisher：ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER

A new experimental setup for simultaneous P-wave velocity (V-P) and density (rho) measurements for liquid alloys is developed using ultrasonic and X-ray absorption methods combined with X-ray tomography at high pressures and high temperatures. The new setup allows us to directly determine adiabatic bulk moduli (K-S) and to discuss the correlation between the V-P and rho of the liquid sample. We measured V-P and rho of liquid Ni68S32 up to 5.6 GPa and 1045 K using this technique. The effect of pressure on the V-P and rho values of liquid Ni68S32 is similar to that of liquid Fe57S43. (Both compositions correspond to near-eutectic ones.) The obtained K-S values are well fitted to the finite strain equation with a K-S0 value (K-S at ambient pressure) of 31.1 GPa and a dK(S)/dP value of 8.44. The measured V-P was found to increase linearly with increasing rho, as approximated by the relationship: V-P [m/s] = 1.29 rho [kg/m(3)] - 5726, suggesting that liquid Ni-S follows an empirical linear relationship, Birch's law. The dV(P)/d rho slope is similar between Ni68S32 and Fe57S43 liquids, while the V-P-rho plot of liquid Ni-S is markedly different from that of liquid Fe-S, which indicates that the effect of Ni on Birch's law is important for understanding the V-P-rho relation of planetary and Moon's molten cores. (C) 2018 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.

DOI： 10.1016/j.crte.2018.04.005

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Measurements of Rayleigh–Taylor instability growth of laser-shocked iron–silicon alloy Reviewed

Tatsuhiro Sakaiya, Hidenori Terasaki, Kosaku Akimoto, Hiroki Kato, Taichi Ueda, Ryota Hosogi, Takashi Fujikawa, Tadashi Kondo, Yoichiro Hironaka, Keisuke Shigemori

High Pressure Research 39 ( 1 ) 150 - 159 2019.1

Publishing type：Research paper (scientific journal)

© 2019, © 2019 Informa UK Limited, trading as Taylor & Francis Group. The Rayleigh–Taylor (RT) instability of liquid iron alloys is important for understanding the core formation mechanism in the Earth. Here we first report the measurement of RT instability growth for a liquid iron–silicon (Fe–Si) alloy, which is one of the major candidate for the material of the Earth’s core, using a high power laser. We optimized the measurement setup and analytical technique to observe the growth of perturbation on an Fe–Si sample surface. The growth of perturbation amplitude on the Fe–Si alloy under high pressure and temperature was successfully observed using in situ X-ray radiography. The growth rate of the RT instability for the Fe–Si alloy on about 1000 GPa was estimated to be 0.3 ns −1 .

DOI： 10.1080/08957959.2019.1575966

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Density and elasticity measurements for liquid materials

Hidenori Terasaki, Keisuke Nishida

Magmas Under Pressure: Advances in High-Pressure Experiments on Structure and Properties of Melts 237 - 260 2018.1

Language：English Publishing type：Part of collection (book) Publisher：Elsevier

Density and elastic properties (such as bulk modulus) of liquid materials under pressure are important to understand the behavior and distribution of magma in the Earth’s interior. The magma behavior is also closely related to mantle differentiation in the early Earth. In this chapter, the currently proposed density, sound velocity, and elasticity measurements for noncrystalline materials at high pressure are reviewed and the advantages and potential problems of these methods are discussed.

DOI： 10.1016/B978-0-12-811301-1.00009-5

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Variations of lattice constants and thermal expansion coefficients of indium at high pressure and high temperature Reviewed

Takubo Yusaku, Terasaki Hidenori, Kondo Tadashi, Mitai Shingo, Kamada Seiji, Kikegawa Takumi, Machida Akihiko

HIGH PRESSURE RESEARCH 38 ( 4 ) 406 - 413 2018

Development of density measurement for metals at high pressures and high temperatures using X-ray absorption imaging combined with externally heated diamond anvil cell Reviewed

Yusaku Takubo, Hidenori Terasaki, Tadashi Kondo, Shingo Mitai, Seiji Kamada, Takumi Kikegawa, Akihiko Machida

Comptes Rendus - Geoscience 351 ( 2-3 ) 182 - 189 2018

Language：English Publishing type：Research paper (scientific journal) Publisher：Elsevier Masson SAS

A technique for density measurement under high pressure and high temperature was developed using the X-ray absorption imaging method combined with an externally heated diamond anvil cell. The densities of solid and liquid In were measured in the pressure and temperature ranges of 3.2–18.6 GPa and 294–719 K. The densities obtained through the X-ray absorption imaging method were in good agreement (less than 2.0% difference) with those obtained through X-ray diffraction. Based on the measured density, the isothermal bulk modulus of solid In is determined as 48.0 ± 1.1−40.9 ± 0.8 GPa at 500 K, assuming K′ = 4 to 6. The compression curve of liquid In approaches that of solid In at higher pressures and does not cross over the solid compression curve in the measurement range. The present technique enables us to determine the densities of both solids and liquids precisely in a wide pressure and temperature range.

DOI： 10.1016/j.crte.2018.04.002

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Papers - TERASAKI Hidenori