Chemical characterization of the extraterrestrial material returned by future space mission: An application of nuclear activation methods

M. Ebihara*, Y. Oura

*この研究の対応する著者

研究成果: Article査読

5 被引用数 (Scopus)

抄録

Assuming an application to the unknown extraterrestrial samples recovered and returned by spacecraft in near future, we propose an analytical scheme to characterize those samples in chemical compositions. The analytical procedure consists of three nuclear analytical methods, i.e., neutron-induced prompt gamma ray analysis (PGA), instrumental neutron activation analysis (INAA) and instrumental photon activation analysis (IPAA). In this scheme, the sample is first analyzed by PGA, which is followed by IPAA and INAA. These methods are methodologically described, with emphasizing their advantages and disadvantages. With applying such an analytical scheme to unknown samples, we evaluated two issues; elemental and isotopic effects left in samples analyzed by PGA and the ordering of INAA and IPAA. Among three analytical methods, PGA is acknowledged to be highly significant for the initial analysis of unknown extraterrestrial samples, because it non-destructively yields sufficient data of elemental compositions to classify them into known groups of meteorites without producing noticeable effects in chemical and isotopic compositions.

本文言語English
ページ(範囲)2305-2310
ページ数6
ジャーナルAdvances in Space Research
34
11
DOI
出版ステータスPublished - 2004
外部発表はい

ASJC Scopus subject areas

  • 航空宇宙工学
  • 天文学と天体物理学
  • 地球物理学
  • 大気科学
  • 宇宙惑星科学
  • 地球惑星科学(全般)

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