Research theme for competitive and other funds (4)：
2024 - 2026 有機物の変遷から解き明かす炭素質小惑星の故郷と形成史
2023 - 2026 Extraterrestrial Organics as a tracer for understanding of asteroidal formation in the early Solar System
2019 - 2023 木星の形成は原始太陽系星雲を分裂させたのか? -分化隕石からのアプローチ-
2018 - 2022 放射化学的手法を用いたハロゲンの地球化学の新展開
Papers (73)：
Naoya Imae, Naotaka Tomioka, Masayuki Uesugi, Makoto Kimura, Akira Yamaguchi, Motoo Ito, Richard C. Greenwood, Tatsuya Kawai, Naoki Shirai, Takuji Ohigashi, et al. Mineralogical approach on laboratory weathering of uncontaminated Ryugu particles: Comparison with Orgueil and perspective for storage and analysis. Meteoritics & Planetary Science. 2024
Naoki Shirai, Motoo Ito, Akira Yamaguchi, Naotaka Tomioka, Masayuki Uesugi, Naoya Imae, Makoto Kimura, Richard Greenwood, Ming-Chang Liu, Takuji Ohigashi, et al. Mercury (Hg) in Ryugu particles and implications for the origin of volatile elements in early Earth. 2024
Alexander Verchovsky, Feargus Abernethy, Mahesh Anand, Ian Franchi, Monica Grady, Richard Greenwood, Simeon Barber, Martin Suttle, Motoo Ito, Naotaka Tomioka, et al. A new primordial noble gas component in the solar system discovered in Ryugu asteroid. 2023
Toru Yada, Masanao Abe, Masahiro Nishimura, Hirotaka Sawada, Ryuji Okazaki, Yoshinori Takano, Kanako Sakamoto, Tatsuaki Okada, Aiko Nakato, Miwa Yoshitake, et al. A curation for uncontaminated Hayabusa2-returned samples in the extraterrestrial curation center of JAXA: from the beginning to present day. Earth, Planets and Space. 2023. 75. 1
Naotaka Tomioka, Akira Yamaguchi, Motoo Ito, Masayuki Uesugi, Naoya Imae, Naoki Shirai, Takuji Ohigashi, Makoto Kimura, Ming-Chang Liu, Richard C. Greenwood, et al. A history of mild shocks experienced by the regolith particles on hydrated asteroid Ryugu. Nature Astronomy. 2023. 7. 6. 669-677
富岡尚敬, 山口亮, 伊藤元雄, 上椙真之, 今栄直也, 白井直樹, 白井直樹, 大東琢治, 大東琢治, 木村眞, et al. Shock metamorphism of the surface particles of asteroid Ryugu. 日本鉱物科学会年会講演要旨(Web). 2022. 2022
