Non-Destructive Elemental Analysis of the C-Type Asteroid Ryugu with Negative Muon Beams―Determination of Bulk Chemistry of Ryugu Samples
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- Terada Kentaro
- 大阪大学大学院理学研究科
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- Ninomiya Kazuhiko
- 大阪大学放射線科学基盤機構
Bibliographic Information
- Other Title
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- 素粒子ミュオンによる小惑星リュウグウの非破壊元素分析
Abstract
<p>We have been developing a non-destructive muonic X-ray analysis for extraterrestrial materials. Ten coarse Ryugu samples, which were allocated to the initial analysis STONE team, have been investigated at J-PARC MUSE. Significant muonic X-rays of C, N, O, Na, Mg, Si, S and Fe were detected from Ryugu and CI chondrite (Orgueil). These elemental ratios are in a good agreement with the reported values for CI chondrites, except for the 25% lower O/Si ratio for Ryugu relative to CI. This means that Ryugu is depleted of oxygen by 11.3% by mass compared to CI, assuming similar Si concentration for Ryugu to CI chondrites.</p>
Journal
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- Butsuri
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Butsuri 79 (1), 24-29, 2024-01-05
The Physical Society of Japan
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Details 詳細情報について
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- CRID
- 1390298698490220416
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- ISSN
- 24238872
- 00290181
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- Text Lang
- ja
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- Data Source
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- JaLC
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- Abstract License Flag
- Disallowed