Study of large scale circulation in early solar nebula using new method of CT analysis of meteorites for the analysis of Hayabusa2 returned samples

• Project/Area Number: 15H03755
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Geochemistry/Cosmochemistry
• Research Institution: Japan Synchrotron Radiation Research Institute (2016-2017); Japan Aerospace EXploration Agency (2015)
• Principal Investigator: Masayuki Uesugi 公益財団法人高輝度光科学研究センター, 利用研究促進部門, 研究員 (20426521)
• Co-Investigator(Renkei-kenkyūsha): Uesugi Kentaro 高輝度光科学研究センター, 利用研究促進部門, 主幹研究員 (80344399)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥16,770,000 (Direct Cost: ¥12,900,000、Indirect Cost: ¥3,870,000); Fiscal Year 2017: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2016: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2015: ¥8,710,000 (Direct Cost: ¥6,700,000、Indirect Cost: ¥2,010,000)
• Keywords: 放射光CT / 炭素質コンドライト隕石 / 惑星探査 / 隕石 / 放射光XRD-CT / データベース / 炭素質コンドライト / サンプルリターン / X線回折 / XRD-CT / サンプルリターン計画 / 隕石母天体 / 原始太陽系物質循環 / マルチスケール

Outline of Final Research Achievements

In order to investigate large scale circulation of material inside the early solar nebula, we developed coordinated analytical method of meteorites, carbonaceous chondrites which especially most primitive class of the meteorites, using synchrotron radiation computed tomography (SR-CT). We developed sample holders, X-ray detector for the multi-scale tomography, data analysis program for multi-scale SR-CT and database for the
Using these devices and softwares, we could investigate more than 100 pieces of carbonaceous chondrites, and analyze the relation of chemical compositions and size of inclusions between carbonaceous chondrites, and investigate the formation environment of them in the early solar nebula statistically and quantitatively.

Research Products

• [Presentation] 放射光CTを用いた、隕石の総合観察システムの構築 (2017)
  • Author(s): Masayuki Uesugi
  • Organizer: 日本地球惑星関連連合大会
• [Presentation] Development of XRD combined CT for the observation of mm-sized meteorites. (2017)
  • Author(s): Masayuki Uesugi
  • Organizer: Goldschmidt conference 2017
  • Int'l Joint Research
• [Presentation] Current status of developments by the collaboration team with ESCuC/JAXA for curation works and analysis of Hayabusa2 returned samples (2017)
  • Author(s): Masayuki Uesugi
  • Organizer: Hayabusa 2017
  • Int'l Joint Research
• [Presentation] A new analytical protocol of synchrotron radiation computed tomography coupled with x-ray diffraction for the observation of extraterrestrial materials (2017)
  • Author(s): Masayuki Uesugi
  • Organizer: The 24th congress of the International commission for optics
  • Int'l Joint Research
• [Presentation] Development of multiscale tomography by Synchrotron radiation for future sample return missions (2015)
  • Author(s): M. Uesugi, K. Uesugi, A. Takeuchi, Y. Suzuki
  • Organizer: HAYABUSA 2015: 3rd Symposium of Solar System Materials
  • Place of Presentation: ISAS, Sagamihara, Kanagawa, Japan
  • Year and Date: 2015-11-18