Experimental study on melting at ultrahigh pressures with intense laser for Earth science and laser fusion

• Project/Area Number: 23340175
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Plasma science
• Research Institution: Osaka University
• Principal Investigator: SHIGEMORI Keisuke 大阪大学, レーザーエネルギー学研究センタ, 准教授 (50335395)
• Co-Investigator(Kenkyū-buntansha): SAKAIYA Tatsuhiro 大阪大学, 理学研究科, 助教 (60452421) ; KONDO Tadashi 大阪大学, 理学研究科, 教授 (20252223) ; NAKAI Mitsuo 大阪大学, レーザーエネルギー学研究センター, 教授 (70201663)
• Project Period (FY): 2011-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000); Fiscal Year 2014: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2013: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2012: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2011: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
• Keywords: 高強度レーザー / 超高圧力 / 音速 / 鉄合金 / ダイヤモンド / 融解 / 弾塑性転移 / 鉄化合物 / 高エネルギー密度科学 / 超高圧 / 流体不安定性 / 地球核の不純物 / 高圧下での融点 / インプリント / X線シャドウグラフ / 鉄 / 地球内核

Outline of Final Research Achievements

This experimental study is to melting phenomena at ultrahigh pressures with intense laser. In inertial confinement fusion, hydrodynamic instabilities are of great importance for high density compression. In order to mitigate these instabilities, we focus on stiffness on target material. Experiments were carried out to explore melting issues on ultrahigh pressure region with x-ray radiography technique. We found that the melting at ultrahigh-pressure is "simple" melting from diamond structure into liquid phase. Also found that the stiffness of diamond can mitigate the initial imprinting with its low compressibility.
The melting issue at ultrahigh pressures are also of great important on Earth science. We carried out measurements of sound velocity of iron and iron mixture in order to determine the effects on composition of outer core of the Earth. We obtained the experimental data, suggesting the sound velocity shows good agreements with Birch's low at ultrahigh pressure up to 1 TPa.

Research Products

• [Journal Article] Sound velocity and density measurements of liquid iron up to 800 GPa: A universal relation between Birch's law coefficients for solid and liquid metals (2014)
  • Author(s): Tatsuhiro Sakaiya, Hideki Takahashi, Tadashi Kondo, Toshihiko Kadono, Yoichiro Hironaka, Tetsuo Irifune, Keisuke Shigemori
  • Journal Title: Earth and Planetary Science Letters Volume: 392 Pages: 80-85
  • DOI: 10.1016/j.epsl.2014.02.019
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Production of sulphate-rich vapour during the Chicxulub impact and implications for ocean acidification (2014)
  • Author(s): Ohno, S. T. Kadono, K. Kurosawa, T. Hamura, T. Sakaiya, K. Shigemori, Y. Hironaka, T. Sano, T. Watari, K. Otani, T. Matsui and S. Sugita
  • Journal Title: Nature Geoscience Volume: 7 Issue: 4 Pages: 1-4
  • DOI: 10.1038/ngeo2095
  • Peer Reviewed
• [Journal Article] Extremely high-pressure generation and compression with laser implosion plasmas (2013)
  • Author(s): Shigemori, K., Hironaka, Y., Nagatomo, H., Fujioka, S., Sunahara, A., Kadono, T., Azechi, H., Shimizu, K.
  • Journal Title: Applied Physics Letters Volume: 102 Issue: 18 Pages: 183501-183501
  • DOI: 10.1063/1.4804200
  • Peer Reviewed
• [Journal Article] Advances in the investigation of shock-induced reflectivity of porous carbon (2013)
  • Author(s): Batani, D. , Paleari, S., Vinci, T., Benocci, R., Shigemori, K., Hironaka, Y., Kadono, T., Shiroshita, A.
  • Journal Title: Laser and Particle Beams Volume: 31 Issue: 3 Pages: 457-464
  • DOI: 10.1017/s026303461300030x
  • Peer Reviewed
• [Journal Article] Present status of fast ignition realization experiment and inertial fusion energy development (2013)
  • Author(s): H. Azechi, K. Mima, S. Shiraga, S. Fujioka, H. Nagatomo,, H. Nishimura, T. Norimatsu, P. Norreys, T. Ozaki, J. Pasley, H. Sakagami, Y. Sakawa, N. Sarukura, K. Shigemori, et al.
  • Journal Title: Nuclear Fusion Volume: 53 Issue: 10 Pages: 104021-104021
  • DOI: 10.1088/0029-5515/53/10/104021
  • Peer Reviewed
• [Journal Article] A new target design for laser shock-compression studies of carbon reflectivity in the megabar regime (2013)
  • Author(s): Stefano Paleari
  • Journal Title: The European Physical Jouranal D Volume: 掲載予定 Issue: 7
  • DOI: 10.1140/epjd/e2013-30630-8
  • Peer Reviewed
• [Journal Article] Kilotesla magnetic field due to a capacitor-coil target driven by high power laser (2013)
  • Author(s): Shinsuke Fujioka
  • Journal Title: Scientific Reports Volume: 3 Issue: 1 Pages: 1170-1170
  • DOI: 10.1038/srep01170
  • Peer Reviewed
• [Journal Article] Sound velocity measurements by x-ray shadowgraph technique for melting phenomena at ultrahigh-pressure regime (2012)
  • Author(s): K. Shigemori
  • Journal Title: Review of Scientific Instruments Volume: 83 Issue: 10 Pages: 10529-10529
  • DOI: 10.1063/1.4739055
  • Peer Reviewed
• [Journal Article] High-energy-density plasmas generation on GEKKO-LFEX laser facility for fast-ignition laser fusion studies and laboratory astrophysics (2012)
  • Author(s): S. Fujioka, Z. Zhang, N. Yamamoto, S. Ohira, Y. Fujii, K. Ishihara, T. Johzaki, A. Sunahara, Y. Arikawa. K. Shigemori, Y. Hironaka, Y. Sakawa, Y. Nakata, J. Kawanaka, H. Nagatomo, et al.
  • Journal Title: Plasma Phys. Control. Fusion Volume: 54 Issue: 12 Pages: 124042-8
  • DOI: 10.1088/0741-3335/54/12/124042
  • Peer Reviewed
• [Journal Article] Integrated experiments of fast ignition targets by Gekko-XII and LFEX lasers (2012)
  • Author(s): H. Shiraga
  • Journal Title: High Energy Density Physics Volume: 8 Issue: 3 Pages: 227-230
  • DOI: 10.1016/j.hedp.2012.03.008
  • Peer Reviewed
• [Journal Article] Shock-induced silicate vaporization: The role of electrons (2012)
  • Author(s): Kurosawa K., Kadono T., Sugita S., Shigemori K., Sakaiya T., Hironaka Y, Ozaki N., ShiroshitaA.,Cho Y., Tachibana S., Vinci T., Ohno S., Kodama R. and Matsui T.
  • Journal Title: Journal of Geophysical Research:Planets Volume: 117 Issue: E4 Pages: 1-14
  • DOI: 10.1029/2011je004031
  • Peer Reviewed
• [Journal Article] Flyer acceleration by high-power laser and impact experiments at velocities higher than 10 km/s. In the Proc 17th APS Topical Conference on Shock Compression of Condensed Matter (2012)
  • Author(s): T. Kadono, Eds., Mark L. Elert, William T. Buttler, John P. Borg, Jennifer L. Jordan, Tracy J. Vogler
  • Journal Title: AIP Conference Proceedings Volume: 1426 Pages: 847-859
  • DOI: 10.1063/1.3686410
  • Peer Reviewed
• [Journal Article] Laser-shock compression & Hugoniot measurements of liquid hydrogen to 55 GPa (2011)
  • Author(s): Sano, T., 13 coauthors, T. Kadono, 7 coauthors
  • Journal Title: Phys. Rev. B Volume: 83 Issue: 5 Pages: 54117-54117
  • DOI: 10.1103/physrevb.83.054117
  • Peer Reviewed
• [Journal Article] Silicate Dust Size Sistribution from Hypervelocity Collisions: Implications for Dust Production in Debris Discs (2011)
  • Author(s): S. Takasawa, A. M. Nakamura, T. Kadono
  • Journal Title: Astrophys. J. Lett Volume: 733 Issue: 2 Pages: 39-39
  • DOI: 10.1088/2041-8205/733/2/l39
  • Peer Reviewed
• [Journal Article] Sound Velocity Measurement of Pure Iron under Earth's Core Conditions Using Dynamic Compression (2011)
  • Author(s): 境家達弘, 近藤忠, 重森啓介
  • Journal Title: The Review of High Pressure Science and Technology Volume: 21 Issue: 2 Pages: 84-90
  • DOI: 10.4131/jshpreview.21.84
  • NAID: 10029541390
  • ISSN: 0917-639X, 1348-1940
• [Presentation] 物質の硬さに着眼したレーザー核融合ターゲットの設計 (2014)
  • Author(s): 重森啓介1，加藤弘樹 ，中井光男 ，境家達弘 ，寺崎英紀 ， 細木亮太 ，弘中陽一郎 ，藤岡慎介1，砂原淳 ，長友英夫1， 清水克哉，疇地宏
  • Organizer: 第55回高圧討論会
  • Place of Presentation: 徳島大学
  • Year and Date: 2014-11-22 – 2014-11-24
• [Presentation] Probing Carbon under ultra-high pressure with sound velocity measurements (2014)
  • Author(s): Kagayama, T.Sakaiya, T. Kondo, H. Sumiya, T. Irifune, K.Kurosawa, S. Sugita, Y. Hironaka, T. Kadono, H. Azechi
  • Organizer: Plasma Conference 2014
  • Place of Presentation: 朱鷺メッセ
  • Year and Date: 2014-11-18 – 2014-11-21
• [Presentation] Effects of hydrodynamic response due to material stiffness on laser imprinting (2014)
  • Author(s): Hiroki Kato,Keisuke Shigemori ,Yoichiro Hironaka ,Hidenori Terasaki,Tatsuhiro Sakaiya,Ryota Hosogi ,Mitsuo Nakai,Hiroshi Azechi
  • Organizer: Plasma Conference 2014
  • Place of Presentation: 朱鷺メッセ
  • Year and Date: 2014-11-18 – 2014-11-21
• [Presentation] Proving diamonds under ultra-high pressure with sound velocity measurements (2014)
  • Author(s): K. Shigemori, K. Shimizu, Y. Asakura, D. Hayashi, Y. Nakamoto, T. Kagayama, T.Sakaiya, T. Kondo, H. Sumiya, T. Irifune, K.Kurosawa, S. Sugita, Y. Hironaka, T. Kadono, H. Azechi
  • Organizer: 56th Annual Meeting of the APS Division of Plasma Physics
  • Place of Presentation: Mariott Hotel New Orleans
  • Year and Date: 2014-10-27 – 2014-10-31
• [Presentation] Mitigation of initial imprinting with diamond ablator (2014)
  • Author(s): Hiroki Kato,Keisuke Shigemori ,Yoichiro Hironaka ,Hidenori Terasaki,Tatsuhiro Sakaiya,Ryota Hosogi ,Mitsuo Nakai,Hiroshi Azechi
  • Organizer: 56th Annual Meeting of the APS Division of Plasma Physics
  • Place of Presentation: Mariott Hotel New Orleans
  • Year and Date: 2014-10-27 – 2014-10-31
• [Presentation] ダイヤモンドアブレーターによる初期インプリントの抑制効果 (2014)
  • Author(s): 加藤弘樹
  • Organizer: 日本物理学会第69回年次大会
  • Place of Presentation: 東海大学
• [Presentation] レーザー爆縮プラズマを用いた極高圧力の発生とギガバール科学の開拓 (2014)
  • Author(s): 重森啓介
  • Organizer: 日本物理学会第69回年次大会
  • Place of Presentation: 青山学院大学相模原キャンパス
• [Presentation] 高強度レーザーを用いた極高圧力の発生～メガバールからギガバール (2013)
  • Author(s): 重森啓介
  • Organizer: 「日本における超高速衝突実験の現状と将来展望」研究会
  • Place of Presentation: 宇宙科学研究所
• [Presentation] Mitigation of laser imprinting with diamond ablator for direct-drive inertial confinement fusion targets (2013)
  • Author(s): Keisuke Shigemori
  • Organizer: 45 th Annual Meeting of Division of Plasma Physics, American Physical Society
  • Place of Presentation: Sheraton Hotel, Denver Downtown
• [Presentation] ダイヤモンドアブレーターによる初期インプリントの抑制効果 (2013)
  • Author(s): 加藤弘樹
  • Organizer: 日本物理学会2013年秋季大会
  • Place of Presentation: 徳島大学
• [Presentation] Sound velocity and density measurements of FeSi alloy by laser‑shock compression (2013)
  • Author(s): N. Yokoyama
  • Organizer: r8th International Conference on Inertial FUsion Sciences and Applications
  • Place of Presentation: Nara New Public Hall
• [Presentation] Sound velocities of Fe75Ni15Si10 alloys up to 800GPa by laser‑shock compression (2013)
  • Author(s): R. Hosogi
  • Organizer: Inter8th International Conference on Inertial FUsion Sciences and Applications
  • Place of Presentation: Nara New Public Hall
• [Presentation] Mitigation of laser imprinting with diamond ablator for direct-drive (2013)
  • Author(s): Keisuke Shigemori
  • Organizer: 8th International Conference on Inertial FUsion Sciences and Applications
  • Place of Presentation: Nara New Public Hall
• [Presentation] ダイヤモンドアブレータによる流体不安定性の抑制 (2013)
  • Author(s): 重森啓介
  • Organizer: 日本物理学会第68回年次大会
  • Place of Presentation: 広島大学
• [Presentation] レーザー爆縮プラズマによる極高圧力発生 と圧縮法の開発 (2013)
  • Author(s): 重森啓介
  • Organizer: 第60回応用物理学会春季学術講演会
  • Place of Presentation: 神奈川工科大学
• [Presentation] レーザー爆縮プラズマを用いた 極高圧力発生法の開発 (2013)
  • Author(s): 重森啓介
  • Organizer: 平成24年度 衝撃波シンポジウム
  • Place of Presentation: 北九州国際会議場
• [Presentation] 高強度レーザーを用いた高温高圧力下における炭素の音速計測 (2012)
  • Author(s): 浅倉康弘, 他
  • Organizer: 日本物理学会第67回年次大会
  • Place of Presentation: 関西学院大学
  • Year and Date: 2012-03-25
• [Presentation] Gigabar Compression by Laser-Imploded Plasmas with Cone-in-Shell Targets and Application to Recovery Experiments (2012)
  • Author(s): K. Shigemori
  • Organizer: 2012 Exploring the Physics and Chemistry of Giant Planets on NIF Workshop
  • Place of Presentation: Lawrence Livermore National Laboratory
  • Invited
• [Presentation] レーザー爆縮プラズマを用いた Gbar圧力の発生と圧縮 (2012)
  • Author(s): 重森啓介
  • Organizer: プラズマ・核融合学会 第29回年会
  • Place of Presentation: クローバープラザ(福岡）
• [Presentation] レーザー爆縮プラズマを用いたGbar圧力の発生 (2012)
  • Author(s): 重森啓介
  • Organizer: 第53回 高圧討論会
  • Place of Presentation: 大阪大学
• [Presentation] Extremely high pressure generation by implosion plasmas with cone-in shell targets (2012)
  • Author(s): K. Shigemori
  • Organizer: 54th Annual Meeting of the APS Division of Plasma Physics
  • Place of Presentation: Providence RI
• [Presentation] レーザー爆縮プラズマによる極高圧力の発生II (2012)
  • Author(s): 重森啓介
  • Organizer: 日本物理学会 2012年秋季大会
  • Place of Presentation: 横浜国立大学
• [Presentation] Extremely high pressure generation by implosion plasmas with cone-in shell targets (2012)
  • Author(s): K. Shigemori
  • Organizer: 42nd Anomalous Absorption Conference
  • Place of Presentation: Key West, FL
• [Presentation] Sound velocity measurements by x-ray shadowgraph technique for melting phenomena at ultrahigh-pressure regime (2012)
  • Author(s): K. Shigemori
  • Organizer: 19th Topical Conference High-Temperature Plasma Diagnostics
  • Place of Presentation: Monterey, CA
• [Presentation] 高強度レーザー照射された融点付近の単結晶ダイヤモンドの音速計測 (2011)
  • Author(s): 重森啓介, 他
  • Organizer: Plasma Conference 2011
  • Place of Presentation: 金沢県立音楽堂
  • Year and Date: 2011-11-24
• [Presentation] Measurements of Sound Velocity of Diamond at the Pressure Around the Melt (2011)
  • Author(s): K.Shigemori, et al.
  • Organizer: 53rd Annual Meeting of the APS Division of Plasma Physics
  • Place of Presentation: Salt Palace Convention Center
  • Year and Date: 2011-11-16
• [Presentation] Measurements of Sound Velocity of Diamond at the Pressure Around the Melt (2011)
  • Author(s): K.Shigemori, et al.
  • Organizer: The Seventh International Conference on Inertial Fusion Sciences and Applications
  • Place of Presentation: Palais des Congres de Bordeaux-Lac
  • Year and Date: 2011-09-13
• [Presentation] 高強度レーザーを用いた高温高圧力下における炭素の音速計測 (2011)
  • Author(s): K.Shigemori, et al.
  • Organizer: 3rd International Conference on High Energy Density Physics
  • Place of Presentation: Centro Cultural de Belem
  • Year and Date: 2011-05-19