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ID 48721
本文ファイル
著者
Uesugi, Masayuki
Naraoka, Hiroshi
Ito, Motoo
Kitajima, Fumio
Takano, Yoshinori
Mita, Hajime
Ohnishi, Ichiro
Kebukawa, Yoko
Yada, Toru
Karouji, Yuzuru
Ishibashi, Yukihiro
Okada, Takaaki
Abe, Masanao
キーワード
Hayabusa
Carbonaceous material
Sequential analysis
Microstructural observation by TEM/STEM
抄録(英)
Preliminary results of the analyses of five carbonaceous materials (particle size of approximately 50 μm) from the Hayabusa spacecraft sample catcher, including their texture, chemistry, and chemical/isotopic compositions, are summarized. The carbonaceous particles underwent sequential analysis using a series of microanalytical instruments located at several research institutes and universities. Collected particles were initially classified into four categories: two categories containing extraterrestrial silicate particles, one category containing metal and quartz particles consistent with contamination from the sample catcher or sample manipulation tools, and a final category containing carbonaceous particles. Analysis of this final category was the main focus of this study. Through examination of the carbonaceous materials, the appropriate analytical processes for sample transportation and handling were optimized to minimize sample damage and terrestrial contamination. Particles were investigated by transmission electron microscopy/scanning transmission electron microscopy, and Ca-carbonate inclusions were found in one particle. In a different particle, a heterogeneous distribution of silicon in a uniform C, N, and O matrix was found. Though further analysis is required for a strict determination of particle origin, the differences in the microstructure and elemental distribution of the carbonaceous particles suggest multiple origins.
内容記述
TEM analyses were performed at JEOL Ltd. XANES analysis was conducted in UVSOR Facility in Institute for Molecular Science, supported by Nanotechnology Platform Program (Molecule and Material Synthesis) of the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan.
掲載誌名
Earth, Planets and Space
66巻
開始ページ
102
出版年月日
2014-08-26
出版者
Springer Open
ISSN
1880-5981
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
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publisher
権利情報
© 2014 Uesugi et al.; licensee Springer. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited.
関連情報URL
部局名
理学研究科