Observations of X ray caused by hypervelocity impacts in laboratories and extraterrestrial ones

• Project/Area Number: 24540538
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Plasma science
• Research Institution: University of Occupational and Environmental Health, Japan
• Principal Investigator: KADONO Toshihiko 産業医科大学, 医学部, 教授 (60359198)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000); Fiscal Year 2012: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
• Keywords: 固体の破壊 / X線 / 破壊 / 隕石衝突 / レーザー / 超高速度衝突 / 高出力レーザー / 弾丸加速 / Ｘ線

Outline of Final Research Achievements

We carried out impact experiments and measured X-ray radiation. At first, the experiments are done at Osaka University where various X-ray detectors are available and recently new projectile acceleration system has been developed. There are signs that X ray is radiated when projectiles impact, but there are some noises due to high-temperature plasma caused by laser irradiation. Then, we construct new systems where sold samples are destructed by not laser irradiation, but compression using a hydraulic press and impact of hypervelocity projectiles using a two-stage light-gasu gun. We actually observe x-ray radiation when rock samples are disrupted and find that the x-ray counts depend on the size of the samples.

Research Products

• [Journal Article] Crater-Ray Formation by Impact-Induced Ejecta Particles (2015)
  • Author(s): T. Kadono, A. I. Suzuki, K. Wada, N. K. Mitani, S. Yamamoto, M. Arakawa, S. Sugita, J. Haruyama, and A. M. Nakamura
  • Journal Title: Icarus Volume: 250 Pages: 215-221
  • DOI: 10.1016/j.icarus.2014.11.030
  • Peer Reviewed
• [Journal Article] Flyer acceleration experiments using a high-power Laser (2013)
  • Author(s): T. Kadono, T. Sakaiya, Y. Hironaka, H. Nagatomo, T. Sano, T. Watari, K. Otani, T. Fujiwara, T. Mochiyama, S. Fujioka, K. Shigemori, H. Yabuta, T. Kondo, M. Arakawa, A. M. Nakamura, K. Kurosawa, S. Sugita, S. Ohno, and T. Matsui
  • Journal Title: EPJ Web of Conferences Volume: 59 Pages: 19002-19002
  • DOI: 10.1051/epjconf/20135919002
  • Peer Reviewed
• [Presentation] Fracture process in impact disruption inferred from fragment shape (2015)
  • Author(s): T. Kadono, T. Tanigawa, H. Mizutani
  • Organizer: AOGS (Asia Oceania Geosciences Society) 2015
  • Place of Presentation: Singapore (Singapore)
  • Year and Date: 2015-08-02
  • Int'l Joint Research
• [Presentation] 衝突破壊における破片形状分布が示す破壊過程 (2015)
  • Author(s): 門野敏彦，谷川享行，水谷仁
  • Organizer: 日本地球惑星科学連合2015年大会
  • Place of Presentation: 幕張メッセ国際会議場（千葉県千葉市）
  • Year and Date: 2015-05-25
• [Presentation] Crater-ray formation by impact-induced ejecta particles (2014)
  • Author(s): T. Kadono, A. I. Suzuki, K. Wada, N. K. Mitani, S. Yamamoto, M. Arakawa, S. Sugita, A. M. Nakamura
  • Organizer: AOGS (Asia Oceania Geosciences Society) 2014
  • Place of Presentation: Royton Sapporo Hotel（北海道札幌市）
  • Year and Date: 2014-07-28 – 2014-08-01
• [Presentation] はやぶさ２・SCIの地上較正実験：クレーターサイズについて (2014)
  • Author(s): 門野敏彦，荒川政彦，辻堂さやか，保井みなみ，長谷川直，黒澤耕介，白井慶，早川雅彦，岡本千里，佐伯孝尚，今村裕志，矢野創，中澤暁，小川和律，飯島祐一，平田成，高木靖彦，和田浩二
  • Organizer: 日本地球惑星科学連合2014年大会
  • Place of Presentation: パシフィコ横浜 会議センター（神奈川県横浜市）
  • Year and Date: 2014-04-28 – 2014-05-02
• [Presentation] 高出力レーザーによる飛翔体の加速と惑星科学への応用 (2013)
  • Author(s): 門野敏彦
  • Organizer: プラズマ・核融合学会第30回年会シンポジウム
  • Place of Presentation: 東京工業大学
• [Presentation] Crater rays in impact experiments and numerical simulations (2013)
  • Author(s): 門野敏彦，鈴木絢子，三谷典子，和田浩二，山本聡，中村昭子，荒川政彦，杉田精司
  • Organizer: 日本地球惑星科学連合2013年大会
  • Place of Presentation: 千葉幕張メッセ国際会議場
• [Presentation] X ray in hypervelocity impacts higher than 10 km/s (2012)
  • Author(s): T.Kadono,T.Sakaiya,Y.Hironaka,T.Watari,T.Sano,K.Otani,T.Fujiwara,T.Mochiyama,S.Fujioka,H.Nagatomo,K.Shigemori,M.Arakawa,S.Takasawa,A.M.Nakamura,S.Ohno,T.Matsui,K.Kurosawa,T.Hamura,S.Sugita
  • Organizer: Asia Oceania Geosciences Society 2012
  • Place of Presentation: Resorts World Convention Centre, Singapore