@article{CTT100893677, author = {Kenji Ohta and Sho Suehiro and Saori I. Kawaguchi and Yoshiyuki Okuda and Tatsuya Wakamatsu and Kei HIROSE and Yasuo Ohishi and Manabu Kodama and Shuichiro hirai and Shintaro Azuma}, title = {Measuring the Electrical Resistivity of Liquid Iron to 1.4 Mbar}, journal = {PHYSICAL REVIEW LETTERS}, year = 2023, } @article{CTT100858505, author = {Kenji Ohta and Yoshiyuki Okuda and Seiji Kimura and Yohan Park and Tatsuya Wakamatsu and Kei Hirose}, title = {A cylindrical SiC heater for an externally heated diamond anvil cell to 1500 K}, journal = {Review of Scientific Instruments}, year = 2021, } @article{CTT100858506, author = {Kenji Ohta and Kei Hirose}, title = {The thermal conductivity of the Earth's core and implications for its thermal and compositional evolution}, journal = {National Science Review}, year = 2020, } @article{CTT100831826, author = {Yoshiyuki Okuda and Kenji Ohta and Akira Hasegawa and Takashi Yagi and Kei Hirose and Saori Kawaguchi and Yasuo Ohishi}, title = {Thermal conductivity of Fe-bearing post-perovskite in the Earth’s lowermost mantle}, journal = {Earth and Planetary Science Letters}, year = 2020, } @article{CTT100831824, author = {Yoshiyuki Okuda and Kenji Ohta and Ryosuke Sinmyo and Kei HIROSE and Yasuo Ohishi}, title = {Anomalous compressibility in (Fe,Al)ーbearing bridgmanite: implications for the spin state of iron}, journal = {Physics and Chemistry of Minerals}, year = 2020, } @article{CTT100831827, author = {Kenji Ohta and Tatsuya Wakamatsu and Manabu Kodama and Katsuyuki Kawamura and Shuichiro Hirai}, title = {Laboratory-based x-ray computed tomography for 3D imaging of samples in a diamond anvil cell in situ at high pressures}, journal = {Review of Scientific Instruments}, year = 2020, } @article{CTT100831825, author = {Hayato Inoue and Sho Suehiro and Kenji Ohta and Kei Hirose and Yasuo Ohishi}, title = {Resistivity saturation of hcp Fe-Si alloys in an internally heated diamond anvil cell: A key to assessing the Earth's core conductivity}, journal = {Earth and Planetary Science Letters}, year = 2020, } @article{CTT100814314, author = {Chie Kato and Koichiro Umemoto and Kenji Ohta and Shoh Tagawa and Kei Hirose and Yasuo Ohishi}, title = {Stability of fcc phase FeH to 137 GPa}, journal = {American Mineralogist}, year = 2020, } @article{CTT100800292, author = {Akira Hasegawa and Takashi Yagi and Kenji Ohta}, title = {Combination of pulsed light heating thermoreflectance and laser-heated diamond anvil cell for in-situ high pressure-temperature thermal diffusivity measurements}, journal = {Review of Scientific Instruments}, year = 2019, } @article{CTT100800291, author = {Yoshiyuki Okuda and Kenji Ohta and Ryosuke Sinmyo and Kei HIROSE and Takashi Yagi and Yasuo Oishi}, title = {Effect of spin transition of iron on the thermal conductivity of (Fe, Al)-bearing bridgmanite}, journal = {}, year = 2019, } @article{CTT100800290, author = {Akira Hasegawa and Kenji Ohta and Takashi Yagi and Kei HIROSE and Yoshiyuki Okuda and Tadashi Kondo}, title = {Composition and pressure dependence of lattice thermal conductivity of (Mg,Fe)O solid solutions}, journal = {}, year = 2019, } @article{CTT100800287, author = {Kenji Ohta and Yu Nishihara and Yuki Sato and Kei HIROSE and Takashi Yagi and Saori Imada Kawaguchi and Naohisa Hirao and Yasuo Ohishi}, title = {An experimental examination of thermal conductivity anisotropy in hcp iron}, journal = {Frontiers in Earth Science}, year = 2018, } @article{CTT100800288, author = {Kenji Ohta and Sho Suehiro and Kei HIROSE and Yasuo Oishi}, title = {Electrical resistivity of fcc phase iron hydrides at high pressures and temperatures}, journal = {Comptes Rendus Geoscience}, year = 2018, } @article{CTT100770373, author = {Tatsuya Wakamatsu and Kenji Ohta and Takashi Yagi and Kei Hirose and Yasuo Ohishi}, title = {Measurements of sound velocity in iron–nickel alloys by femtosecond laser pulses in a diamond anvil cell}, journal = {Physics and Chemistry of Minerals}, year = 2018, } @article{CTT100770372, author = {Sho Suehiro and Kenji Ohta and Kei Hirose and Guillaume Morard and Yasuo Ohishi}, title = {The influence of sulfur on the electrical resistivity of hcp iron:Implications for the core conductivity of Mars and Earth}, journal = {Geophysical Research Letters}, year = 2017, } @article{CTT100747159, author = {Yoshiyuki Okuda and Kenji Ohta and Takashi Yagi and Ryosuke Sinmyo and Tatsuya Wakamatsu and Kei HIROSE and Yasuo Oishi}, title = {The effect of iron and aluminum incorporation on lattice thermal conductivity of bridgmanite at the Earth's lower mantle}, journal = {Earth and Planetary Science Letters}, year = 2017, } @article{CTT100747161, author = {Kenji Ohta and Takashi Yagi and Kei HIROSE and Yasuo Oishi}, title = {Thermal conductivity of ferropericlase in the Earth's lower mantle}, journal = {Earth and Planetary Science Letters}, year = 2017, } @article{CTT100791132, author = {Matsuoka, T. and Kuno, K. and Kenji Ohta and Sakata, M. and Nakamoto, Y. and Hirao, N. and Ohishi, Y. and Shimizu, K. and Kume, T. and Sasaki, S.}, title = {Lithium polyhydrides synthesized under high pressure and high temperature}, journal = {Journal of Raman Spectroscopy}, year = 2017, } @article{CTT100708525, author = {Kenji Ohta and Yasuhiro Kuwayama and Kei Hirose and Katsuya Shimizu and Yasuo Ohishi}, title = {Experimental determination of the electrical resistivity of iron at Earth’s core conditions}, journal = {Nature}, year = 2016, } @article{CTT100736296, author = {Shoh Tagawa and Kenji Ohta and Kei Hirose and Chie Kato and Yasuo Oishi}, title = {Compression of Fe–Si–H alloys to core pressures}, journal = {Geophysical Research Letters}, year = 2016, } @article{CTT100698964, author = {Kenji Ohta and Kota Ichimaru and Mari Einaga and Sho Kawaguchi and Katsuya Shimizu and Takahiro Matsuoka and Naohisa Hirao and Yasuo Ohishi}, title = {Phase bounadry of hot dense fluid hydrogen}, journal = {Scientific Reports}, year = 2015, } @article{CTT100674650, author = {Saori Imada and Kenji Ohta and Takashi Yagi and Kei HIROSE and Hideto Yoshida and Hiroko Nagahara}, title = {Measurements of lattice thermal conductivity of MgO to core-mantle boundary pressures}, journal = {Geophysical Research Letters}, year = 2014, } @article{CTT100673431, author = {Kenji Ohta and Kiyoshi Fujino and yasuhiro kuwayama and Tadashi Kondo and Katsuya Shimizu and Yasuo Ohishi}, title = {Highly conductive iron-rich (Mg,Fe)O magnesiowüstite and its stability in the Earth’s lower mantle}, journal = {Juornal of Geophysical Research, Solid Earth}, year = 2014, } @article{CTT100669926, author = {Matsuoka, T. and Sakata, M. and Nakamoto, Y. and Takahama, K. and Ichimaru, K. and Mukai, K. and Ohta, K. and Hirao, N. and Ohishi, Y. and Shimizu, K.}, title = {Pressure-induced re-entrant metallic phase of lithium}, journal = {Physical review. B, Condensed matter and materials physics}, year = 2014, } @article{CTT100665732, author = {Kenji Ohta and Takashi Yagi and Kei Hirose}, title = {Thermal diffusivities of MgSiO3 and Al-bearing MgSiO3 perovskites}, journal = {American Mineralogist}, year = 2014, } @article{CTT100664806, author = {Hitoshi Gomi and Kenji Ohta and Kei Hirose and Stephane Labrosse and Razvan Caracas and Matthieu J. Verstraete and John W. Hernlund}, title = {The high conductivity of iron and thermal evolution of the Earth’s core}, journal = {Physics of the Earth and Planetary Interiors}, year = 2013, } @article{CTT100664804, author = {Kenji Ohta and Takashi Yagi and Naoyuki Taketoshi and Kei Hirose and Tetsuya Komabayashi and Tetsuya Baba and Yasuo Ohishi and John W. Hernlund}, title = {Lattice thermal conductivity of MgSiO3 perovskite and post-perovskite at the core-mantle boundary}, journal = {Earth and Planetary Science Letters}, year = 2012, } @article{CTT100664805, author = {Emiko Sugimura and Tetsuya Komabayashi and Kenji Ohta and Kei Hirose and Yasuo Ohishi and Leonid Dubrovinsky}, title = {Experimental evidence of superionic conduction in H2O ice}, journal = {Journal of Chemical Physics}, year = 2012, } @article{CTT100664803, author = {Kenji Ohta and Ronald E. Cohen and Kei Hirose and Kristjan Haule and Katsuya Shimizu and Yasuo Ohishi}, title = {Experimental and theoretical evidence for pressure-induced metallization in FeO with the rock-salt type structure}, journal = {PHYSICAL REVIEW LETTERS}, year = 2012, } @article{CTT100664802, author = {Haruka Ozawa and Kei Hirose and Kenji Ohta and Hirofumi Ishii and Nozomu Hiaoka and Yasuo Ohishi and Yusuke Seto}, title = {Spin crossover, structural change, and metallization in NiAs-type FeO at high pressure}, journal = {Physical review. B, Condensed matter and materials physics}, year = 2011, } @article{CTT100664801, author = {Takashi Yagi and Kenji Ohta and Kennichi Kobayashi and Naoyuki Taketoshi and Kei Hirose and Tetsuya Baba}, title = {Thermal diffusivity measurement in diamond anvil cell using light pulse thermoreflectance technique}, journal = {Measurement Science and Technology}, year = 2011, } @article{CTT100664786, author = {八木 貴志 and 太田 健二 and 小林 謙一 and 竹歳 尚之 and 廣瀬 敬 and 馬場 哲也}, title = {光パルス加熱サーモリフレクタンス法によるダイヤモンドアンビルセルを用いた高圧下の熱拡散率測定}, journal = {Thermophysical properties}, year = 2010, } @article{CTT100664797, author = {Kenji Ohta and Kei Hirose and Masahiro Ichiki and Katsuya Shimizu and Nagayoshi Sata and Yasuo Ohishi}, title = {Electrical conductivities of pyrolitic mantle and MORB materials up to the lowermost mantle conditions}, journal = {Earth and Planetary Science Letters}, year = 2010, } @article{CTT100664800, author = {Tsuyoshi Iizuka and Malcolm T. McCulloch and Tsuyoshi Komiya and Takazo Shibuya and Kenji Ohta and Haruka Ozawa and Emiko Sugimura and Kenneth D. Collerson}, title = {Monazite geochronology and geochemistry of meta-sediments in the Narryer Gneiss Complex, Western Australia: constraints on the tectonothermal history and provenance}, journal = {Contributions to Mineralogy and Petrology}, year = 2010, } @article{CTT100664799, author = {Kenji Ohta and Kei Hirose and Katsuya Shimizu and Yasuo Ohishi}, title = {High-pressure experimental evidence for metal FeO with normal NiAs-type structure}, journal = {Physical review. B, Condensed matter and materials physics}, year = 2010, } @article{CTT100664798, author = {Kenji Ohta and Kei Hirose and Katsuya Shimizu and Nagayoshi Sata and Yasuo Ohishi}, title = {The electrical resistance measurements of (Mg,Fe)SiO3 perovskite at high pressures and implications for electronic spin transition of iron}, journal = {Physics of the Earth and Planetary Interiors}, year = 2010, } @article{CTT100664789, author = {太田 健二 and 廣瀬 敬 and 新名 良介 and 小野田 朱々江 and 清水 克哉}, title = {レーザー加熱式ダイヤモンドセルを用いた(Mg,Fe)SiO_3ポストペロフスカイト相の電気伝導度測定}, journal = {高圧力の科学と技術 = The Review of high pressure science and technology}, year = 2008, } @article{CTT100664796, author = {Kenji Ohta and Kei Hirose and Thorne Lay and Nagayoshi Sata and Yasuo Ohishi}, title = {Phase transitions in pyrolite and MORB at lowermost mantle conditions: Implications for a MORB-rich pile above the core-mantle boundary}, journal = {Earth and Planetary Science Letters}, year = 2008, } @article{CTT100696520, author = {Kenji Ohta and Suzue Onoda and Kei Hirose and Ryosuke Sinmyo and Katsuya Shimizu and Nagayoshi Sata and Yasuo Ohishi and Akira Yasuhara}, title = {The electrical conductivity of post-perovskite in Earth's D" layer}, journal = {Science}, year = 2008, } @article{CTT100664794, author = {Kenji Ohta and Kei Hirose and Suzue Onoda and Katsuya Shimizu}, title = {The effect of iron spin transition on electrical conductivity of (Mg,Fe)O magnesiowüstite}, journal = {Proceedings of the Japan Academy, Ser. B Physical and Biological Sciences}, year = 2007, } @inproceedings{CTT100884367, author = {⽯澤紀 and 太⽥健⼆ and 蛯名瞭⽃ and 河⼝沙織 and 兒⽟学 and 平井秀⼀郎}, title = {MgOの融解曲線の決定}, booktitle = {}, year = 2022, } @inproceedings{CTT100806775, author = {Tatsuya Wakamatsu and Kenji Ohta and Shoh Tagawa and Yagi Takashi and Kei Hirose and Yasuo Ohishi}, title = {Sound velocity measurements on hcp-FeHx (x<1) under high pressures by femtosecond pulse laser pump-probe technique}, booktitle = {}, year = 2019, } @inproceedings{CTT100823967, author = {太田健二 and 兒玉学 and 松木祐太朗 and 河村雄行 and 平井秀一郎}, title = {X線CT 技術を用いたダイヤモンドアンビルセル中の試料の高圧その場形状観察}, booktitle = {}, year = 2019, } @inproceedings{CTT100819299, author = {松木祐太朗 and 兒玉学 and 河村雄行 and 太田健二 and 植村豪 and 幸琢寛 and 平井秀一郎}, title = {全固体電池の超高圧下X線CT構造解析}, booktitle = {}, year = 2019, } @inproceedings{CTT100799487, author = {松木祐太朗 and 兒玉学 and 河村雄行 and 太田健二 and 植村豪 and 幸琢 寛 and 平井秀一郎}, title = {全固体電池の超高圧下X線CT構造解析}, booktitle = {}, year = 2019, } @inproceedings{CTT100792134, author = {奥田 善之 and 山田 明 and 太田 健二 and 前田 毅 and 和田 隆博 and 廣瀬 敬}, title = {ダイヤモンドアンビルセルを用いた超高圧力下におけるp型伝導性SrCuSeF,BaCuSeFの電気伝導度測定}, booktitle = {}, year = 2019, } @inproceedings{CTT100785133, author = {Shoh Tagawa and Kenji Ohta and Kei Hirose and Yasuo Oishi}, title = {Phase relations in non-stoichiometric FeHx at high pressures}, booktitle = {}, year = 2018, } @inproceedings{CTT100785130, author = {田川翔 and 太田健二 and 廣瀬敬 and 大石泰生}, title = {レーザ加熱式DACを用いた鉄-水素系高温高圧相の合成}, booktitle = {}, year = 2017, } @inproceedings{CTT100785132, author = {Shoh Tagawa and Kenji Ohta and Kei Hirose and Yasuo Oishi}, title = {Formation of non-stoichiometric fcc and hcp FeHx at high pressure and temperature conditions}, booktitle = {}, year = 2017, } @inproceedings{CTT100785117, author = {Shoh Tagawa and Kenji Ohta and Kei Hirose and Yasuo Oishi}, title = {Compression behavior of Fe-Si-H alloys}, booktitle = {}, year = 2015, } @inproceedings{CTT100785116, author = {Shoh Tagawa and Kenji Ohta and Kei Hirose and Yasuo Oishi}, title = {Compression of hcp Fe-Si-H alloy to 130 GPa}, booktitle = {}, year = 2015, } @inproceedings{CTT100664784, author = {太田 健二}, title = {アメリカ地球物理学連合秋季大会 (AGU2011 Fall Meeting) 報告}, booktitle = {高圧力の科学と技術 = The Review of high pressure science and technology}, year = 2012, } @inproceedings{CTT100664785, author = {八木 貴志 and 太田 健二 and 小林 謙一 and 竹歳 尚之 and 廣瀬 敬 and 馬場 哲也}, title = {日本熱物性学会賞論文賞を受賞して}, booktitle = {熱物性 : Japan journal of thermophysical properties}, year = 2012, } @inproceedings{CTT100664788, author = {太田 健二 and 八木 貴志 and 竹歳 尚之 and 廣瀬 敬 and 馬場 哲也}, title = {下部マントル鉱物の熱伝導率}, booktitle = {高圧討論会講演集}, year = 2010, } @inproceedings{CTT100664787, author = {五味 斎 and 太田 健二 and 廣瀬 敬}, title = {静的高圧下における鉄の電気伝導度測定}, booktitle = {高圧討論会講演集}, year = 2010, } @misc{CTT100791710, author = {太田健二}, title = {高圧力下における地球深部物質の電気・熱伝導率測定}, year = 2016, } @misc{CTT100673432, author = {太田健二 and 八木貴志 and 廣瀬敬}, title = {パルス光加熱サーモリフレクタンス法を 用いた高圧力下での下部マントル鉱物の 格子熱伝導率測定}, year = 2014, }