Non-Destructive Elemental Analysis of the C-Type Asteroid Ryugu with Negative Muon Beams―Determination of Bulk Chemistry of Ryugu Samples

DOI

Bibliographic Information

Other Title
  • 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

  • Butsuri

    Butsuri 79 (1), 24-29, 2024-01-05

    The Physical Society of Japan

Details 詳細情報について

  • CRID
    1390298698490220416
  • DOI
    10.11316/butsuri.79.1_24
  • ISSN
    24238872
    00290181
  • Text Lang
    ja
  • Data Source
    • JaLC
  • Abstract License Flag
    Disallowed

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