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ID 48720
本文ファイル
著者
Kitajima, Fumio
Uesugi, Masayuki
Karouji, Yuzuru
Ishibashi, Yukihiro
Yada, Toru
Naraoka, Hiroshi
Abe, Masanao
Fujimura, Akio
Ito, Motoo
Mita, Hajime
Takano, Yoshinori
Okada, Tatsuaki
キーワード
The Hayabusa spacecraft
Carbonaceous material
Category 3 particle
Micro-Raman spectroscopy
Micro-infrared spectroscopy
Insoluble organic matter
抄録(英)
Three category 3 (organic) particles (RB-QD04-0001, RB-QD04-0047-02, and RA-QD02-0120) and so-called ‘white object’ found in the sample container have been examined by micro-Raman and infrared (IR) spectroscopy. In addition, several artificial substances that could occur as possible contaminants and chondritic insoluble organic matter (IOM) prepared from the Murchison CM2 chondrite were analyzed. The Raman spectra of the particles show broad G-band and weak D-band. The G-band parameters plot in the disordered region and close to the artifact produced from a Viton glove after laser exposure rather than chondritic IOM. The particles were therefore originally at low maturity level, suggesting that they have not experienced strong heating and are therefore not related to the LL4-6 parent body. The IR spectra are not similar to that of chondritic IOM. Furthermore, the particles cannot be identified as some artificial carbonaceous substances, including the white object, which are the possible contaminants, examined in this investigation. Although it cannot be determined exactly whether the three category 3 particles are extraterrestrial, the limited IR and Raman results in this investigation strongly suggest their terrestrial origin. Although they could not be directly related to the artificial contaminants examined in this investigation, they may yet be reaction products from similar substances that flew on the mission. In particular, RB-QD04-0047-02 shows several infrared spectral absorption bands in common with the ‘white object.’ This may relate to the degradation of a polyimide/polyamide resin.
掲載誌名
Earth, Planets and Space
67巻
開始ページ
20
出版年月日
2015-02-11
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
著者版フラグ
publisher
権利情報
© 2015 Kitajima 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