Chemical assessment of the explosive chamber in the projector system of Hayabusa2 for asteroid sampling

Hayabusa2 project team

研究成果: Contribution to journalArticle査読

1 被引用数 (Scopus)

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We report a chemical assessment of the explosive chamber in the projector system used during the sampling operation of the Hayabusa2 project at the surface of the C-type asteroid Ryugu. Although the explosion process was designed as a closed system, volatile combustion gases and semivolatile organics were produced together with quenched carbonaceous product. The chemical compositions of the gases, organics, and inorganics were investigated in the screening analysis. A solid-phase microextraction technique and thermal desorption coupled with gas chromatography/mass spectrometry analysis revealed that aliphatic (< C20n-alkanes) and aromatic (< pyrene) hydrocarbons were produced in the closed chamber system. The aromatic ring compositions of the latter showed a semilogarithmic decrease: one ring > two rings > three rings > four rings, resulting in abiogenic molecular patterns. The most intense inorganic fingerprints were due to potassium (K+) and chloride (Cl) ions derived from the initial KTB explosive and RK ignition charge. We discuss quality control and quality assurance issues applicable to future sample processes during the Hayabusa2 project.[Figure not available: see fulltext.].

本文言語英語
論文番号97
ジャーナルearth, planets and space
72
1
DOI
出版ステータス出版済み - 12 1 2020

All Science Journal Classification (ASJC) codes

  • 地質学
  • 宇宙惑星科学

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