超高強度レーザー衝撃実験による惑星形成過程の解明

• 研究課題/領域番号: 24244071
• 研究種目: 基盤研究(A)
• 配分区分: 補助金
• 応募区分: 一般
• 研究分野: 固体地球惑星物理学
• 研究機関: 千葉工業大学
• 研究代表者: 松井 孝典 千葉工業大学, 惑星探査研究センター, 所長 (80114643)
• 研究分担者: 杉田 精司 東京大学, 理学系研究科, 教授 (80313203) ; 門野 敏彦 産業医科大学, 医学部, 教授 (60359198) ; 中村 昭子 神戸大学, 自然科学研究科, 准教授 (40260012) ; 荒川 政彦 神戸大学, 自然科学研究科, 教授 (10222738) ; 黒澤 耕介 千葉工業大学, 惑星探査研究センター, 研究員 (80616433)
• 研究期間 (年度): 2012-04-01 – 2015-03-31
• 研究課題ステータス: 完了 (2014年度)
• 配分額: 48,360千円 (直接経費: 37,200千円、間接経費: 11,160千円); 2014年度: 4,940千円 (直接経費: 3,800千円、間接経費: 1,140千円); 2013年度: 10,140千円 (直接経費: 7,800千円、間接経費: 2,340千円); 2012年度: 33,280千円 (直接経費: 25,600千円、間接経費: 7,680千円)
• キーワード: 惑星形成・進化 / 惑星大気進化 / 高速度天体衝突 / 衝突蒸発 / Hugoniot曲線 / 高強度レーザー / 時間分解分光計測 / 速度干渉計測 / 天体衝突物理学 / 状態方程式 / 惑星初期進化 / 固体惑星初期大気 / 高速分光計測 / 高速撮像計測 / 超高強度レーザー / 二段式軽ガス銃 / 高速分光学 / 固体物性 / 大気の起源

研究成果の概要

固体岩石惑星上での超高速衝突に際して起きる蒸発現象の物理化学過程を解明することを目的とし, 主要珪酸塩鉱物であるカンラン石の衝撃圧縮実験を行った． 400-900 GPaの圧力範囲で密度-圧力-温度-エントロピー空間上でのHugoniot曲線の決定に必要なデータを取得できた. 実験結果は，衝突後の珪酸塩蒸発度が従来の見積もりよりも高いことを強く示唆する.この珪酸塩が酸素を気相に放出しやすい性質は, 冥王代の地球での超高速度衝突では過渡的に酸素に富む大気が生じた可能性を示唆する. 酸素に富む大気の出現は、堆積物の酸化還元状態に大きな影響を与えるため，地質記録から検証できる可能性がある．

研究成果

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• [雑誌論文] High-precision potassium measurements using laser-induced breakdown spectroscopy under high vacuum conditions for in situ K-Ar dating of planetary surfaces (2015)
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  • 雑誌名: Spectrochimica Acta Part B 巻: 106 ページ: 28-35
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  • DOI: 10.1016/j.pss.2014.08.008
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  • 雑誌名: Planetary and Space Science 巻: 107 ページ: 45-52
  • DOI: 10.1016/j.pss.2014.07.011
  • 査読あり / 謝辞記載あり
• [雑誌論文] Crater-Ray Formation by Impact-Induced Ejecta Particles (2015)
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• [雑誌論文] Corrigendum to ''Relationship between regolith particle size and porosity on small bodies'' [Icarus 239 (2014) 291-293] (2015)
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• [雑誌論文] Impact chemistry of methanol: Implications for volatile evolution on icy satellites and dwarf planets, and cometary delivery to the Moon (2014)
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• [雑誌論文] Gas recovery experiments to determine the degree of shock-induced devolatilization of calcite (2014)
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• [雑誌論文] Experimental study of impact-cratering damage on brittle cylindrical column model as a fundamental component of space architecture (2014)
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• [雑誌論文] Laboratory experiments on the impact disruption of iron meteorites at temperature of near-Earth space (2014)
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• [雑誌論文] Impact strength of small icy bodies that experienced multiple collisions (2014)
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  • 雑誌名: 日本惑星科学会誌遊星人 巻: 23 ページ: 103-110
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  • 雑誌名: Nature Geoscience 巻: 7 号: 4 ページ: 1-4
  • DOI: 10.1038/ngeo2095
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• [雑誌論文] A formation mechanism for concentric ridges in ejecta surrounding impact craters in a layer of fine glass beads (2014)
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  • 雑誌名: Icarus 巻: 印刷中
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• [雑誌論文] Hydrogen cyanide production due to mid-size impacts in a redox-neutral N2-rich atsmophere (2013)
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• [雑誌論文] Oxidation of carbon compounds by silica-derived oxygen within impact-induced vapor plumes (2013)
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• [雑誌論文] Influence of a Polyimide Surface Layer on the Piezoelectric Response of Lead-Zirconate-Titanate Cosmic Dust Detector (2013)
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• [雑誌論文] Impact and intrusion experiments on the deceleration of low-velocity impactors by small-body regolith. (2013)
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• [雑誌論文] Viscoelastic deformation of lunar impact basins: Implications for heterogeneity in the deep crustal paleo-thermal state and radioactive element concentration (2013)
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• [雑誌論文] Laboratory experiments on crater scaling-law for sedimentary rocks in the strength regime, (2012)
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• [雑誌論文] Cratering experiments on the self armoring of coarse-grained granular targets (2012)
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  • 雑誌名: Icarus 巻: 220 号: 2 ページ: 1040-1049
  • DOI: 10.1016/j.icarus.2012.06.041
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• [雑誌論文] The nature of shock-induced calcite (CaCO3) devolatilization in an open system investigated using a two-stage light gas gun (2012)
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• [雑誌論文] Shock-induced silicate vaporization: The role of electrons (2012)
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• [雑誌論文] Direct measurement of chemical composition of SOx in impact vapor using a laser gun, (2012)
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• [雑誌論文] Restitution coefficients and sticking velocities of a chondrule analogue colliding on a porous silica layer at impact velocities between 0.1 and 80 m s -1 (2012)
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• [雑誌論文] Experimental study on collisional disruption of highly porous icy bodies (2012)
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  • 雑誌名: Icarus 巻: 218 号: 2 ページ: 737-750
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  • 査読あり
• [学会発表] Calibration and First Light of Optical Navigation Camera (ONC) of Hayabusa 2. (2015)
  • 著者名/発表者名: Sugita, S., S. Kameda, H. Sawada, H. Suzuki, M. Yamada, R. Honda, T. Morota, C. Honda, K. Ogawa, K. Shirai, Y. Iijima, Y. Cho, A. Takei, M. Sato, Y. Okumura, T. Yasuda, K. Shibasaki, S. Ikezawa, T. Nakamura, T. Hiroi, S. Kamata, S. C. Koga, and ONC Team
  • 学会等名: 46th Lunar and Planetary Science Conference
  • 発表場所: The Woodlands, Texas, USA
  • 年月日: 2015-03-16 – 2015-03-20
• [学会発表] Impact-induced melt droplets created by hypervelocity impact experiments using a laser gun (2015)
  • 著者名/発表者名: Ohno, S., T. Sakaiya, K. Kurosawa, T. Kadono, T. Arai, K. Shigemori, Y. Hironaka, S. Sugita, T. Matsui
  • 学会等名: 46th Lunar and Planetary Science Conference
  • 発表場所: The Woodlands, Texas, USA
  • 年月日: 2015-03-16 – 2015-03-20
• [学会発表] Classification of meteorites based purely on bulk elemental compositions for analysis of data obtained through space missions (2015)
  • 著者名/発表者名: Miyamoto, H., T. Niihara, T. Kuritani, P.K. Hong, J.M. Dohm, and S. Sugita
  • 学会等名: 46th Lunar and Planetary Science Conference
  • 発表場所: The Woodlands, Texas, USA
  • 年月日: 2015-03-16 – 2015-03-20
• [学会発表] Dynamical Evolution of Itokawa Inferred from Impact Experiments on Rubble-pile Targets (2015)
  • 著者名/発表者名: Tatsumi, E. and S. Sugita
  • 学会等名: 46th Lunar and Planetary Science Conference
  • 発表場所: The Woodlands, Texas, USA
  • 年月日: 2015-03-16 – 2015-03-20
• [学会発表] In-situ imaging and spectroscopic observations of artificial shooting stars (2015)
  • 著者名/発表者名: Kurosawa, K., H. Senshu, T. Kasuga, S. Sugita, and T. Matsui
  • 学会等名: 46th Lunar and Planetary Science Conference
  • 発表場所: The Woodlands, Texas, USA
  • 年月日: 2015-03-16 – 2015-03-20
• [学会発表] Numerical simulations of impacts of a half spherical shell projectile on small asteroids (2015)
  • 著者名/発表者名: Kurosawa, K., H. Senshu, K. Wada, and TDSS team
  • 学会等名: 46th Lunar and Planetary Science Conference
  • 発表場所: The Woodlands, Texas, USA
  • 年月日: 2015-03-16 – 2015-03-20
• [学会発表] Escape of early martian atmosphere and hydrosphere: Constraints from isotopic compositions (2015)
  • 著者名/発表者名: Kurokawa, H., K. Kurosawa, and T. Usui
  • 学会等名: 46th Lunar and Planetary Science Conference
  • 発表場所: The Woodlands, Texas, USA
  • 年月日: 2015-03-16 – 2015-03-20
• [学会発表] Crater efficiency of an asteroid surface covered with a block layer (2014)
  • 著者名/発表者名: Tatsumi, E. and S. Sugita
  • 学会等名: HAYABUSA 2014: 2nd Symposium of Solar System Materials
  • 発表場所: JAXA（神奈川県相模原市）
  • 年月日: 2014-12-04 – 2014-12-05
• [学会発表] Spectral Variation on Asteroid Itokawa Suggesting Regional Resurfacing (2014)
  • 著者名/発表者名: Koga, S. C., S. Sugita, S. Kamata, M. Ishiguro, T. Hiroi, S. Sasaki
  • 学会等名: HAYABUSA 2014: 2nd Symposium of Solar System Materials
  • 発表場所: JAXA（神奈川県相模原市）
  • 年月日: 2014-12-04 – 2014-12-05
• [学会発表] Crater Rays and Mesh-like Pattern in Impact Ejecta (2014)
  • 著者名/発表者名: Kadono, T., Suzuki, A., K. Wada, S. Yamamoto, M. Arakawa, S. Sugita, J. Haruyama, and A. Nakamura
  • 学会等名: Asia Oceania Geosciences Society 11th Annual Meeting
  • 発表場所: ロイトン札幌（北海道札幌市）
  • 年月日: 2014-07-28 – 2014-08-01
• [学会発表] Impact-driven Ocean Acidification as a Mechanism of K-Pg Mass Extinctions (2014)
  • 著者名/発表者名: Ohno, S. T. Kadono, T. Sakaiya, K. Kurosawa, T. Hamura, T. Sakaiya, K. Shigemori, Y. Hironaka, T. Sano, T. Watari, K. Otani, T. Matsui and S. Sugita
  • 学会等名: Asia Oceania Geosciences Society 11th Annual Meeting
  • 発表場所: ロイトン札幌（北海道札幌市）
  • 年月日: 2014-07-28 – 2014-08-01
• [学会発表] Detection Experiment of Ar Emission Lines for K-Ar Dating Using Laser-induced Breakdown Spectroscopy in Vacuum (2014)
  • 著者名/発表者名: Okumura, Y., K. Shibasaki, T. Oishi, Y. Cho, S. Kameda, K. Mibe, Y. Miura, and S. Sugita
  • 学会等名: Asia Oceania Geosciences Society 11th Annual Meeting
  • 発表場所: ロイトン札幌（北海道札幌市）
  • 年月日: 2014-07-28 – 2014-08-01
• [学会発表] Asteroid Shape Reconstruction by Open Source Tools for Hayabusa-2 Mission (2014)
  • 著者名/発表者名: Hirata, N., Y. Mori, N. Namiki, S. Sugita
  • 学会等名: Asia Oceania Geosciences Society 11th Annual Meeting
  • 発表場所: ロイトン札幌（北海道札幌市）
  • 年月日: 2014-07-28 – 2014-08-01
• [学会発表] Experimental investigation for cavity dimensions of highly porous small bodies (2014)
  • 著者名/発表者名: Okamoto, T., A. M. Nakamura, and S. Hasegawa
  • 学会等名: Asteroids, Comets, Meteors 2014
  • 発表場所: Helsinki, Finland
  • 年月日: 2014-06-30 – 2014-07-04
• [学会発表] Outcome of impact disruption of iron meteorites at room temperature (2014)
  • 著者名/発表者名: Katsura, T., A. M. Nakamura, A. Takabe, T. Okamoto, K. Sangen, S. Hasegawa, X. Liu, and T. Mashimo
  • 学会等名: Asteroids, Comets, Meteors 2014
  • 発表場所: Helsinki, Finland
  • 年月日: 2014-06-30 – 2014-07-04
• [学会発表] The thermodynamic response of silicate minerals after meteoritic impacts: Implications for the evolution of planetary atmospheres (2014)
  • 著者名/発表者名: Kosuke Kurosawa
  • 学会等名: The 10th international conference on High Energy Density Laboratory Astrophysics
  • 発表場所: Bordeaux, France
  • 年月日: 2014-05-12 – 2014-05-16
  • 招待講演
• [学会発表] Ultrafast Imaging Observations of the Impact Jetting during Oblique Impacts (2014)
  • 著者名/発表者名: Kurosawa, K., Y. Nagaoka, S. Hasegawa, S. Sugita, and T. Matsui
  • 学会等名: 45th Lunar and Planetary Science Conference
  • 発表場所: The Woodlands, Texas, USA
• [学会発表] Principal-Component Analysis of the Continuous 3-μm Spectra of Low-Albedo Asteroids Observed with the Akari Satellite (2014)
  • 著者名/発表者名: Okamura, N., S. Sugita, S. Kamata, F. Usui, T. Hiroi, T. Ootsubo, T. G. Muller, I. Sakon, and S. Hasegawa
  • 学会等名: 45th Lunar and Planetary Science Conference
  • 発表場所: The Woodlands, Texas, USA
• [学会発表] Spectroscopic Observations of Dark Main-Belt Asteroids in The 2.6-3.1μm Range with the Akari Satellite (2014)
  • 著者名/発表者名: Okamura, N., S. Hasegawa, F. Usui, T. Hiroi, T. Ootsubo, T. G. Muller, and S. Sugita
  • 学会等名: 45th Lunar and Planetary Science Conference
  • 発表場所: The Woodlands, Texas, USA
• [学会発表] Impact Generation of Methane-Rich Atmospheres on Early Terrestrial Planets (2014)
  • 著者名/発表者名: Kuwahara, H. and S. Sugita
  • 学会等名: 45th Lunar and Planetary Science Conference
  • 発表場所: The Woodlands, Texas, USA
• [学会発表] An Experimental Study of Shock-induced Devolatilization of Calcite: Dependence on the Ambient Pressure (2014)
  • 著者名/発表者名: Ohno, S., K. Ishibashi, T. Sekine, K. Kurosawa, T. Kobayashi, S. Sugita and T. Matsui
  • 学会等名: 45th Lunar and Planetary Science Conference
  • 発表場所: The Woodlands, Texas, USA
• [学会発表] Spectral Evolution Tracks of S-Type Asteroids Suggested by Principal Component Analysis of Multi-Band Images of Itokawa (2014)
  • 著者名/発表者名: Koga, S., S. Sugita, S. Kamata, M. Ishiguro, T. Hiroi, S. Sasaki
  • 学会等名: 45th Lunar and Planetary Science Conference
  • 発表場所: The Woodlands, Texas, USA
• [学会発表] Development of an In-Situ K-Ar Isochron Dating Method 2: Validation Measurements with Natural Rocks (2014)
  • 著者名/発表者名: Cho, Y., Y. N. Miura, and S. Sugita
  • 学会等名: 45th Lunar and Planetary Science Conference
  • 発表場所: The Woodlands, Texas, USA
• [学会発表] Development of an in-situ K-Ar isochron dating method using LIBS-QMS configuration
  • 著者名/発表者名: Cho, Y., Y. N. Miura, and S. Sugita
  • 学会等名: 44th Lunar and Planetary Science Conference
  • 発表場所: THE Woodlands,Texas,USA
• [学会発表] Entropy gain for shock-heated forsterite: Implications for atmospheric blow-off on the early Earth and Venus
  • 著者名/発表者名: Kurosawa K., T. Kadono, Y. Hironaka, K. Hamano, K. Shigemori, T. Sakaiya, T. Sano, S. Ohno, T. Sekine, N. Ozaki, R. Kodama, S. Tachibana, T. Matsui, and S. Sugita
  • 学会等名: 44th Lunar and Planetary Science Conference
  • 発表場所: THE Woodlands,Texas,USA
• [学会発表] Direct gas analysis experiment of impact-vaporized carbonaceous chondrites
  • 著者名/発表者名: Ohno, S., T. Sakaiya, T. Kadono, K. Kurosawa, H. Yabuta, K. Shigemori, Y. Hironaka, H. Kuwahara, S. Sugita, T. Kondo, T. Yamanaka, and T. Matsui
  • 学会等名: 44th Lunar and Planetary Science Conference
  • 発表場所: THE Woodlands,Texas,USA
• [学会発表] Science observation strategy for HAYABUSA-2 optical navigation cameras (ONC)
  • 著者名/発表者名: Sugita, S., T. Morota, S. Kameda, R. Honda, C. Honda, and Hayabusa-2 ONC Science Team
  • 学会等名: 44th Lunar and Planetary Science Conference
  • 発表場所: THE Woodlands,Texas,USA
• [学会発表] Visible spectroscopic observation of asteroid 162173 (1999 JU3) with the GEMINI-S telescope
  • 著者名/発表者名: Sugita, S., D. Kuroda, S. Kameda, S. Hasegawa, S. Kamata, T. Hiroi, M. Abe, M. Ishiguro, N. Takato, and M. Yoshikawa
  • 学会等名: 44th Lunar and Planetary Science Conference
  • 発表場所: THE Woodlands,Texas,USA
• [学会発表] Methane-rich impact-induced atmospheres on Mars and Post-accretion Earth
  • 著者名/発表者名: Kuwahara, H. and S. Sugita
  • 学会等名: 44th Lunar and Planetary Science Conference
  • 発表場所: THE Woodlands,Texas,USA
• [学会発表] Highly degraded early pre-Nectarian impact basins: Implications for the timing of the magma ocean solidification
  • 著者名/発表者名: Kamata, S., S. Sugita, Y. Abe, Y. Ishihara, Y. Harada, N. Namiki, T. Iwata, H. Hanada, H. Araki, K. Matsumoto, and E. Tajika
  • 学会等名: 44th Lunar and Planetary Science Conference
  • 発表場所: THE Woodlands,Texas,USA
• [学会発表] Laboratory penetration experiments of high velocity projectiles into very porous targets on exotic origin of dusts in primitive bodies
  • 著者名/発表者名: Okamoto, T, Nakamura, A. M., Hasegawa, S., et al.
  • 学会等名: Asteroids, Comets, Meteors (ACM) 2012
  • 発表場所: 朱鷺メッセ(新潟)
• [学会発表] Impact cratering and ejection experiments of porous targets and
  • 著者名/発表者名: Nakamura, A. M., Okamoto, T., and Hasegawa, S.
  • 学会等名: AOGS2012
  • 発表場所: Resort World Convention Centre(シンガポール）
  • 招待講演
• [学会発表] In Situ Flash X-ray Observation of Crater Formation in Porous Gypsum Analogous to Low-Density Asteroids
  • 著者名/発表者名: M Yasui, M., Arakawa, M., and Hasegawa, S., et al.
  • 学会等名: 44th Lunar and Planetary Science Conference
  • 発表場所: THE Woodlands,Texas,USA
• [学会発表] In-situ flash X-ray observation of projectile penetration and crater formation in porous asteroid analogue
  • 著者名/発表者名: Yasui, M., Arakawa, M., and Hasegawa, S., et al.
  • 学会等名: Asteroids, Comets, Meteors (ACM) 2012
  • 発表場所: 朱鷺メッセ(新潟)
• [学会発表] Experimental Study on Impact Disruption of Rocky Rubble-pile Bodies: Effect of Disruption of Constituent Boulders on Reaccumulation Process
  • 著者名/発表者名: Fujita, Y., Arakawa, M., Hasegawa, S., and Shimaki, Y.
  • 学会等名: 44th Lunar and Planetary Science Conference
  • 発表場所: THE Woodlands,Texas,USA
• [学会発表] Experimental Study on Impact Disruption on Rocky Rubble-Pile Bodies, Asteroids
  • 著者名/発表者名: Fujita, Y., Arakawa, M., Hasegawa, S., and Shimaki, Y.
  • 学会等名: 44th Lunar and Planetary Science Conference
  • 発表場所: 朱鷺メッセ(新潟)