New perspective of impact processes among planetary bodies by means of the flash X-ray transmission method

利用闪光X射线透射法观察行星体撞击过程的新视角

• 批准号: 22244056
• 负责人: KATO Manabu
• 金额: $ 30.45万
• 依托单位: Japan Aerospace Exploration Agency
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-22244056/
• 关键词: クレーター; 衝撃波; X線透過法; イジェクタ; 二段式軽ガス銃; スケール則; 衝突蒸気雲; 掘削流; 離散要素法

We have introduced a pair of flash X-ray system with the applied voltage of 300kV in order to study the transient phenomena during the high velocity collision among planetary bodies, and we have tried to construct a new perspective of an impact cratering process by means of these apparatus. Then, we succeeded to observe the impact penetration of a projectile and the crater formation accompanied by this penetration. As a result, we have obtained several new results on the laboratory experiments of the projectile penetration and the crater formation on the porous target, the numerical simulation of the excavation flow during the crater formation, and the observation of the ejecta-expansion from the impact point.

为了研究行星体间高速碰撞过程中的瞬态现象，我们引进了一对施加电压为300kV的闪光x射线系统，并试图利用这些装置构建一个新的视角来研究撞击过程。然后，我们成功地观察了弹丸的撞击穿透和伴随这种穿透的陨石坑的形成。在多孔靶上弹丸侵彻与弹坑形成的室内实验、弹坑形成过程中开挖流场的数值模拟以及弹坑点弹射膨胀的观测等方面取得了一些新的结果。

项目成果

A hydrocode calculation coupled with reaction kinetics of carbon compounds within an impact vapor plume and its implications for cometary impacts on Galilean satellites

• DOI: 10.1016/j.icarus.2010.06.016
• 发表时间: 2010-11-01
• 期刊: ICARUS
• 影响因子: 3.2
• 作者: Ishimaru, Ryo;Senshu, Hiroki;Matsui, Takafumi
• 通讯作者: Matsui, Takafumi

Time-resolved spectroscopic observations of shock-induced silicate ionization,

冲击引起的硅酸盐电离的时间分辨光谱观察，

• DOI: 10.1063/1.3686412
• 发表时间: 2012
• 期刊: AIP Conference Proceedings
• 作者: Kurosawa;K.;Kadono;T.;Sugita;S.;et al.
• 通讯作者: et al.

Laboratory experiments of crater formation on basalt and dunite impacted at the velocity higher than 11 km/s,

玄武岩和纯橄榄岩以高于 11 km/s 的速度撞击形成的陨石坑的实验室实验，

• 发表时间: 2011
• 作者: Arakawa;M. et al.
• 通讯作者: M. et al.

Replacement and late formation of atmospheric N2 on undifferentiated Titan by impacts

• DOI: 10.1038/npre.2011.5880.1
• 发表时间: 2011-04
• 期刊: Nature Precedings
• 作者: Y. Sekine;H. Genda;S. Sugita;T. Kadono;T. Matsui

Production of Various Carbon Nanoclusters by Impact Reaction Using Light-Gas Gun as Simulation of Asteroid Collisions in Space

光气枪模拟太空小行星碰撞碰撞反应制备各种碳纳米团簇

• 发表时间: 2011
• 期刊: Jpn. J. Appl. Phys
• 作者: T. Mieno;S. Hasegawa;K. Mitsuishi
• 通讯作者: K. Mitsuishi