Elasticity of Hydrated Al‐Bearing Stishovite and Post‐Stishovite: Implications for Understanding Regional Seismic VS Anomalies along Subducting Slabs in the Lower Mantle
Yanyao Zhang; Suyu Fu; Shun‐ichiro Karato; Takuo Okuchi; Stella Chariton; Vitali B. Prakapenka; Jung‐Fu Lin
Journal of Geophysical Research: Solid Earth, 2022年04月05日, 査読有り
High thermal conductivity of stishovite promotes rapid warming of a sinking slab in Earth's mantle
Wen-Pin Hsieh; Enrico Marzotto; Yi-Chi Tsao; Takuo Okuchi; Jung-Fu Lin
Earth and Planetary Science Letters, 2022年04月, 査読有り
Hugoniot equation-of-state and structure of laser-shocked polyimide C22H10N2O5
K. Katagiri; N. Ozaki; D. Murayama; K. Nonaka; Y. Hironaka; Y. Inubushi; K. Miyanishi; H. Nakamura; T. Okuchi; T. Sano; Y. Seto; K. Shigemori; K. Sueda; T. Togashi; Y. Umeda; M. Yabashi; T. Yabuuchi; R. Kodama
Physical Review B, 2022年02月10日, 査読有り
Nonlinear effects of hydration on high-pressure sound velocities of rhyolitic glasses
Jesse T. Gu; Suyu Fu; James E. Gardner; Shigeru Yamashita; Takuo Okuchi; Jung-Fu Lin
American Mineralogist, 2021年07月01日, 査読有り
Ultrafast olivine-ringwoodite transformation during shock compression
Takuo Okuchi; Yusuke Seto; Naotaka Tomioka; Takeshi Matsuoka; Bruno Albertazzi; Nicholas J. Hartley; Yuichi Inubushi; Kento Katagiri; Ryosuke Kodama; Tatiana A. Pikuz; Narangoo Purevjav; Kohei Miyanishi; Tomoko Sato; Toshimori Sekine; Keiichi Sueda; Kazuo A. Tanaka; Yoshinori Tange; Tadashi Togashi; Yuhei Umeda; Toshinori Yabuuchi; Makina Yabashi; Norimasa Ozaki
Liquid Structure of Tantalum under Internal Negative Pressure
K. Katagiri; N. Ozaki; S. Ohmura; B. Albertazzi; Y. Hironaka; Y. Inubushi; K. Ishida; M. Koenig; K. Miyanishi; H. Nakamura; M. Nishikino; T. Okuchi; T. Sato; Y. Seto; K. Shigemori; K. Sueda; Y. Tange; T. Togashi; Y. Umeda; M. Yabashi; T. Yabuuchi; R. Kodama
Physical Review Letters, 2021年04月28日, 査読有り
Poirierite, a dense metastable polymorph of magnesium iron silicate in shocked meteorites
Strong hydrogen bonding in a dense hydrous magnesium silicate discovered by neutron Laue diffraction
Narangoo Purevjav; Takuo Okuchi; Christina Hoffmann
IUCr Journal, 2020年05月, 査読有り
The degree of permanent densification in oxide glasses upon extreme compression up to 24 GPa at room temperature
Sung Keun Lee; Kwan Young Mun; Yong-Hyun Kim; Juho Lhee; Takuo Okuchi; Jung-Fu Lin
Journal of Physical Chemistry Letters, 2020年03月, 査読有り
Rheological property of H2O ice VI inferred from its self-diffusion: Implications for the mantle dynamics of large icy bodies
Naoki Noguchi; Takuo Okuchi
Icarus, 2020年01月, 査読有り, 最終著者
Laser-driven shock compression of “synthetic planetary mixtures” of water, ethanol, and ammonia
M. Guarguaglini; J.-A. Hernandez; T. Okuchi; P. Barroso; A. Benuzzi-Mounaix; M. Bethkenhagen; R. Bolis; E. Brambrink; M. French; Y. Fujimoto; R. Kodama; M. Koenig; F. Lefevre; K. Miyanishi; N. Ozaki; R. Redmer; T. Sano; Y. Umeda; T. Vinci; A. Ravasio
Scientific Reports, 2019年12月, 査読有り
Water Concentration in Single‐Crystal (Al,Fe)‐Bearing Bridgmanite Grown From the Hydrous Melt: Implications for Dehydration Melting at the Topmost Lower Mantle
Suyu Fu; Jing Yang; Shun-ichiro Karato; Alexander Vasiliev; Mikhail Yu. Presniakov; Alexander G. Gavrilliuk; Anna G. Ivanova; Erik H. Hauri; Takuo Okuchi; Narangoo Purevjav; Jung-Fu Lin
Geophysical Research Letters, 2019年09月, 査読有り
Single-crystal elasticity of (Al,Fe)-bearing bridgmanite and seismic shear wave radial anisotropy at the topmost lower mantle
Fu Suyu; Yang Jing; Tsujino Noriyoshi; Okuchi Takuo; Purevjav Narangoo; Lin Jung-Fu
EARTH AND PLANETARY SCIENCE LETTERS, 2019年07月15日, 査読有り
Laser-shock compression experiment on magnesium hydride
Morioka, S.; Ozaki, N.; Hosomi, M.; Katagiri, K.; Matsuoka, T.; Miyanishi, K.; Okuchi, T.; Sano, T.; Umeda, Y.; Kodama, R.
High Energy Density Physics, 2019年, 査読有り
Iron isotopic fractionation in mineral phases from Earth's lower mantle: Did terrestrial magma ocean crystallization fractionate iron isotopes?
Yang Hong; Lin Jung-Fu; Hu Michael Y; Roskosz Mathieu; Bi Wenli; Zhao Jiyong; Alp Esen E; Liu Jin; Liu Jiachao; Wentzowitch Renata M; Okuchi Takuo; Dauphas Nicolas
Earth and Planetary Science Letters, 2019年, 査読有り
Quasielastic neutron scattering of brucite for analyzing hydrogen transport at the atomic scale
Ultrafast observation of lattice dynamics in laser-irradiated gold foils
N. J. Hartley; N. Ozaki; T. Matsuoka; B. Albertazzi; A. Faenov; Y. Fujimoto; H. Habara; M. Harmand; Y. Inubushi; T. Katayama; M. Koenig; A. Krygier; P. Mabey; Y. Matsumura; S. Matsuyama; E. E. McBride; K. Miyanishi; G. Morard; T. Okuchi; T. Pikuz; O. Sakata; Y. Sano; T. Sato; T. Sekine; Y. Seto; K. Takahashi; K. A. Tanaka; Y. Tange; T. Togashi; Y. Umeda; T. Vinci; M. Yabashi; T. Yabuuchi; K. Yamauchi; R. Kodama
APPLIED PHYSICS LETTERS, 2017年02月, 査読有り
Equation of state and hyperfine parameters of high-spin bridgmanite in the Earth's lower mantle by synchrotron X-ray diffraction and Mossbauer spectroscopy
Zhu Mao; Fan Wang; Jung-Fu Lin; Suyu Fu; Jing Yang; Xiang Wu; Takuo Okuchi; Naotaka Tomioka; Vitali B. Prakapenka; Yuming Xiao; Paul Chow
AMERICAN MINERALOGIST, 2017年01月, 査読有り
Hydrogenation of iron in the early stage of Earth’s evolution
A Peltier cooling diamond anvil cell for low-temperature Raman spectroscopic measurements
Naoki Noguchi; Takuo Okuchi
REVIEW OF SCIENTIFIC INSTRUMENTS, 2016年12月, 査読有り
Quantitative analysis of hydrogen sites and occupancy in deep mantle hydrous wadsleyite using single crystal neutron diffraction
Narangoo Purevjav; Takuo Okuchi; Naotaka Tomioka; Xiaoping Wang; Christina Hoffmann
SCIENTIFIC REPORTS, 2016年10月, 査読有り
EXAFS studies under high pressure by X-ray Raman scattering
N. Hiraoka; H. Fukui; T. Okuchi
HIGH PRESSURE RESEARCH, 2016年09月, 査読有り
Indirect monitoring shot-to-shot shock waves strength reproducibility during pump-probe experiments
T. A. Pikuz; A. Ya. Faenov; N. Ozaki; N. J. Hartley; B. Albertazzi; T. Matsuoka; K. Takahashi; H. Habara; Y. Tange; S. Matsuyama; K. Yamauchi; R. Ochante; K. Sueda; O. Sakata; T. Sekine; T. Sato; Y. Umeda; Y. Inubushi; T. Yabuuchi; T. Togashi; T. Katayama; M. Yabashi; M. Harmand; G. Morard; M. Koenig; V. Zhakhovsky; N. Inogamov; A. S. Safronova; A. Stafford; I. Yu. Skobelev; S. A. Pikuz; T. Okuchi; Y. Seto; K. A. Tanaka; T. Ishikawa; R. Kodama
JOURNAL OF APPLIED PHYSICS, 2016年07月, 査読有り
High-spin Fe2+ and Fe3+ in single-crystal aluminous bridgmanite in the lower mantle
Jung-Fu Lin; Zhu Mao; Jing Yang; Jin Liu; Yuming Xiao; Paul Chow; Takuo Okuchi
GEOPHYSICAL RESEARCH LETTERS, 2016年07月, 査読有り
Self-diffusion of protons in H2O ice VII at high pressures: Anomaly around 10 GPa
Naoki Noguchi; T. Okuchi
The Journal of Chemical Physics, 2016年06月21日, 査読有り
Hydrogen sites in the dense hydrous magnesian silicate phase E: a pulsed neutron powder diffraction study
Naotaka Tomioka; Takuo Okuchi; Narangoo Purevjav; Jun Abe; Stefanus Harjo
PHYSICS AND CHEMISTRY OF MINERALS, 2016年04月, 査読有り
パルス中性子粉末回折による地球マントル高密度含水相の水素配置解析
奥地 拓生; 富岡 尚敬; プレジャブ ナランゴー
高圧力の科学と技術, 2016年, 査読有り, 招待有り, 筆頭著者, 責任著者
Forge-Hardened TiZr Null-Matrix Alloy for Neutron Scattering under Extreme Conditions
Takuo Okuchi; Akinori Hoshikawa; Toru Ishigaki
METALS, 2015年12月, 査読有り, 筆頭著者, 責任著者
Elasticity of Ferropericlase across the Spin Crossover in the Earth's Lower Mantle
Experimental study of thermal conductivity at high pressures: Implications for the deep Earth's interior
Alexander F. Goncharov; Sergey S. Lobanov; Xiaojing Tan; Gregory T. Hohensee; David G. Cahill; Jung-Fu Lin; Sylvia-Monique Thomas; Takuo Okuchi; Naotaka Tomioka
PHYSICS OF THE EARTH AND PLANETARY INTERIORS, 2015年10月, 査読有り
Synthesis of large and homogeneous single crystals of water-bearing minerals by slow cooling at deep-mantle pressures
P-rho-T measurements of H2O up to 260 GPa under laser-driven shock loading
T. Kimura; N. Ozaki; T. Sano; T. Okuchi; T. Sano; K. Shimizu; K. Miyanishi; T. Terai; T. Kakeshita; Y. Sakawa; R. Kodama
JOURNAL OF CHEMICAL PHYSICS, 2015年04月, 査読有り
Hydrogen site analysis of hydrous ringwoodite in mantle transition zone by pulsed neutron diffraction
Narangoo Purevjav; Takuo Okuchi; Naotaka Tomioka; Jun Abe; Stefanus Harjo
GEOPHYSICAL RESEARCH LETTERS, 2014年10月, 査読有り, 責任著者
Structure refinement of sub-cubic-mm volume sample at high pressures by pulsed neutron powder diffraction: application to brucite in an opposed anvil cell
Takuo Okuchi; Naotaka Tomioka; Narangoo Purevjav; Jun Abe; Stefanus Harjo; Wu Gong
HIGH PRESSURE RESEARCH, 2014年06月, 査読有り, 筆頭著者, 責任著者
Pulsed neutron powder diffraction at high pressure by a capacity-increased sapphire anvil cell
Laser-shock compression and Hugoniot measurements of liquid hydrogen to 55 GPa
T. Sano; N. Ozaki; T. Sakaiya; K. Shigemori; M. Ikoma; T. Kimura; K. Miyanishi; T. Endo; A. Shiroshita; H. Takahashi; T. Jitsui; Y. Hori; Y. Hironaka; A. Iwamoto; T. Kadono; M. Nakai; T. Okuchi; K. Otani; K. Shimizu; T. Kondo; R. Kodama; K. Mima
PHYSICAL REVIEW B, 2011年02月, 査読有り
Phase boundary between perovskite and post-perovskite structures in MnGeO3 determined by in situ X-ray diffraction measurements using sintered diamond anvils
Shock Hugoniot and temperature data for polystyrene obtained with quartz standard
N. Ozaki; T. Sano; M. Ikoma; K. Shigemori; T. Kimura; K. Miyanishi; T. Vinci; F. H. Ree; H. Azechi; T. Endo; Y. Hironaka; Y. Hori; A. Iwamoto; T. Kadono; H. Nagatomo; M. Nakai; T. Norimatsu; T. Okuchi; K. Otani; T. Sakaiya; K. Shimizu; A. Shiroshita; A. Sunahara; H. Takahashi; R. Kodama
PHYSICS OF PLASMAS, 2009年06月, 査読有り
Pulsed laser processing of nano-polycrystalline diamond: A comparative study with single crystal diamond
Fast molecular transport in hydrogen hydrates by high-pressure diamond anvil cell NMR
Takuo Okuchi; Masashi Takigawa; Jinfu Shu; Ho-kwang Mao; Russell J. Hemley; Takehiko Yagi
PHYSICAL REVIEW B, 2007年04月, 査読有り, 筆頭著者, 責任著者
水素ハイドレートの惑星科学
奥地 拓生
遊・星・人 : 日本惑星科学会誌, 2007年03月25日, 査読有り, 筆頭著者, 責任著者
地球中心核と水 : 地球形成時の水素分配反応
奥地 拓生
地學雜誌, 2007年02月25日, 査読有り, 招待有り, 筆頭著者, 責任著者
Electronic bonding transition in compressed SiO2 glass
Jung-Fu Lin; Hiroshi Fukui; David Prendergast; Takuo Okuchi; Yong Q. Cai; Nozomu Hiraoka; Choong-Shik Yoo; Andrea Trave; Peter Eng; Michael Y. Hu; Paul Chow
PHYSICAL REVIEW B, 2007年01月, 査読有り
Hydrogen bonding and dynamics of methanol by high-pressure diamond-anvil cell NMR
T Okuchi; GD Cody; HK Mao; RJ Hemley
JOURNAL OF CHEMICAL PHYSICS, 2005年06月, 査読有り, 筆頭著者, 責任著者
Radio frequency probe with improved sensitivity for diamond anvil cell nuclear magnetic resonance
T Okuchi; RJ Hemley; HK Mao
REVIEW OF SCIENTIFIC INSTRUMENTS, 2005年02月, 査読有り, 筆頭著者, 責任著者
ダイヤモンドアンビルセルNMR
奥地拓生
高圧力の科学と技術 = The Review of high pressure science and technology, 2005年, 査読有り, 筆頭著者, 責任著者
A new type of nonmagnetic diamond anvil cell for nuclear magnetic resonance spectroscopy
T Okuchi
PHYSICS OF THE EARTH AND PLANETARY INTERIORS, 2004年06月, 査読有り, 筆頭著者, 責任著者
水の行方ー地球初期進化への新たな問題提起ー
奥地拓生
地球化学, 1999年, 査読有り, 招待有り, 筆頭著者, 責任著者
The melting temperature of iron hydride at high pressures and its implications for the temperature of the Earth's core
T Okuchi
JOURNAL OF PHYSICS-CONDENSED MATTER, 1998年12月, 査読有り, 筆頭著者, 責任著者
Hydrogen partitioning into molten iron at high pressure: Implications for Earth's core
レーザー学会研究会報告 = Reports on the Topical meeting of the Laser Society of Japan, 2012年08月31日
Neutron powder diffraction of small-volume samples at high pressure using compact opposed-anvil cells and focused beam
T. Okuchi; S. Sasaki; Y. Ohno; J. Abe; H. Arima; T. Osakabe; T. Hattori; A. Sano-Furukawa; K. Komatsu; H. Kagi; W. Utsumi; S. Harjo; T. Ito; K. Aizawa
23RD INTERNATIONAL CONFERENCE ON HIGH PRESSURE SCIENCE AND TECHNOLOGY (AIRAPT-23), 2012年, 査読有り, 筆頭著者, 責任著者
高圧力下におけるガスハイドレートの単結晶成長
佐々木 重雄; 奥地 拓生; 久米 徹二; 清水 宏晏
日本結晶成長学会誌, 2011年04月30日, 招待有り
クラスレートハイドレートへの水素の貯蔵
奥地 拓生
配管技術, 2010年11月, 招待有り, 筆頭著者
クラスレートハイドレートへの水素貯蔵過程の高圧その場観測
奥地 拓生
ENEOS technical review, 2010年01月, 招待有り, 筆頭著者
Static compression experiments for advanced coupling techniques of laser-driven dynamic compression and precompression target
T. Kimura; N. Ozaki; T. Okuchi; T. Mashimo; K. Miyanishi; T. Endo; T. Jitsui; A. Hirose; M. Ikoma; T. Kakeshita; Y. Sakawa; T. Sano; T. Sano; K. Shimizu; T. Terai; R. Kodama
INTERNATIONAL CONFERENCE ON HIGH PRESSURE SCIENCE AND TECHNOLOGY, JOINT AIRAPT-22 AND HPCJ-50, 2010年, 査読有り
Large-volume static compression using nano-polycrystalline diamond for opposed anvils in compact cells
T. Okuchi; S. Sasaki; T. Osakabe; Y. Ohno; S. Odake; H. Kagi
INTERNATIONAL CONFERENCE ON HIGH PRESSURE SCIENCE AND TECHNOLOGY, JOINT AIRAPT-22 AND HPCJ-50, 2010年, 査読有り, 筆頭著者, 責任著者
Hugoniot and temperature measurements of liquid hydrogen by laser-shock compression
T. Sano; N. Ozaki; T. Sakaiya; K. Shigemori; M. Ikoma; T. Kimura; K. Miyanishi; T. Endo; A. Shiroshita; H. Takahashi; T. Jitsui; Y. Hori; Y. Hironaka; A. Iwamoto; T. Kadono; M. Nakai; T. Okuchi; K. Otani; K. Shimizu; T. Kondo; R. Kodama; K. Mima
SIXTH INTERNATIONAL CONFERENCE ON INERTIAL FUSION SCIENCES AND APPLICATIONS, PARTS 1-4, 2010年, 査読有り
J-PARCでの高圧高温専用ビームラインの実現に向けて
永井 隆哉; 有馬 寛; 奥地 拓生; 鍵 裕之; 八木 健彦
高圧力の科学と技術 = The Review of high pressure science and technology, 2009年, 査読有り
氷物性と新しい惑星物質科学
奥地 拓生
遊・星・人 : 日本惑星科学会誌, 2007年03月25日
氷の物理化学に関する国際会議(PCI 2006)参加報告 : International Symposium on Physics and Chemistry of Ice : PCI
Location, capacity and transport of hydrogen in the crystal structure of deep-earth hydrous minerals
Takuo Okuchi
Goldschmidt Conference 2022 Workshop: Advanced Neutron Scattering for Earth and Planetary Science, 2022年06月09日, 招待有り
Structure transformation of silicate minerals during hypervelocity collisions occurred in the solar system.
Takuo Okuchi
Japan-US joint seminar series on high energy density science (The Institute of Laser Engineering at Osaka University and the High Energy Density Science Center at LLNL), 2022年05月11日, 招待有り
Laser-driven shock experiments of planetary materials for finding evolution history of early solar system
Takuo Okuchi
International Conference on High Energy Density Sciences 2022, 2022年04月20日
非晶質シリケイト微粒子の水分子ダイナミ クスの解析
奥地 拓生; 富岡 尚敬; 瀬戸 雄介; 梅田 悠平; 山田 武; 玉造 博夢; 柴田 薫
2021年度量子ビームサイエンスフェスタ, 2022年03月08日
水酸化鉱物の脱水時に起こる表面拡散の中性子散乱解析
奥地拓生; 梅田悠平; 富岡尚敬; 瀬戸雄介; 山田武
日本鉱物科学会年会講演要旨(Web), 2022年
非晶質惑星物質微粒子の水和過程の中性子準弾性散乱解析
奥地拓生; 富岡尚敬; 瀬戸雄介; 梅田悠平; 山田武; 玉造博夢; 柴田薫
日本中性子科学会第21回年会, 2021年12月02日
Location, capacity and transport of hydrogen in the crystal structures of deep-earth hydrous minerals analyzed by pulsed neutron scattering
Fast recrystallization process of dense mineral crystals by asteroid impacts in the early solar system, as simulated by laser-driven shock and analyzed in-situ by SACLA XFEL
Takuo Okuchi
OptoX-nano 2019, 2019年12月04日, 招待有り
Laser-shock experiments at SACLA for simulating impact events in the early solar system: current status and perspective
Takuo Okuchi
SACLA Users' Meeting 2019, 2019年08月29日, 招待有り
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
奥地拓生
ATI水和ナノ構造研究会, 2019年01月29日, 招待有り
Linking structures and textures of naturally-shocked planetary materials with laser-shocked crystals analyzed in-situ by XFEL diffraction
Takuo Okuchi
Laser Shock Workshop 2019, at High Pressure Science & Technology Advanced Research, 2019年01月08日, 招待有り