Our goal is to describe atoms that represent element distribution of the Solar system that are continuously evolving from the beginning to the future. To understand the Solar system with spatial scale 1013 m, we analyze planetary materials that are from different origin with different processes, and determine element and isotope compositions with spatial resolution down to 10-9 m.
Planetary materials besides terrestrial ones are the rolling stones that are sampled with locality unknown. To fill the important missing information, we developed a protocol that is to determine multiple-elements, multiple-isotopes, and multiple-phases. We referred the approach to be 'comprehensive' and construct an analytical system that let us do so. The system acts as a gigantic machine with numerous instruments glued by analytical methods and disciplined people. The disciplines and samples would be taken over to the next generation to sustain our science.
We work as a team and prefer arguments scientifically.
03/31/2023
The amino acid abundances of two Ryugu particles were measured and compared with their rocky components. The results demonstrate the important role that water plays in the formation of amino acids on the giant precursors of asteroids like Ryugu. [ ... Read More ... 続きを読む ]
06/10/2022
A team of scientists undertake a comprehensive analysis of samples returned from the Japan Aerospace Exploration Agency’s Hayabusa2 mission and provide invaluable insights into the formation and evolution of our solar system. [ ... Read More ... 続きを読む ]
2024-2025
Torii Douglas-Song, Tsutomu Ota, Masahiro Yamanaka, Hiroshi Kitagawa, Ryoji Tanaka, Christian Potiszil, Tak Kunihiro . Lithium- and oxygen-isotope compositions of a Si-rich nebular reservoir determined from chondrule constituents in the Sahara 97103 EH3 chondrite. Geochimica et Cosmochimica Acta, 400, 51-71 (2025).
Wei Zhang, Hiroshi Kitagawa, Fang Huang, Magnesium isotope composition of volcanic rocks from cold and warm subduction zones: Implications for the recycling of subducted serpentinites and carbonates. Geochimica et Cosmochimica Acta, 391, 158-176 (2025).
Küçükarslan, N., Ota, T., Potiszil, C., Kobayashi, K., Exploring the Evidence for the Early Bronze Age Iron Production at Kaman-Kalehöyük, In: Maner, C., Weeden, M., Omura, M., Matsumura, K., Harrassowiz, V., Wiesbaden (Eds) It All Began with Stratigraphy and Chronology, XVIII, 506, pp. 337-358 (2025), ISBN: 978-3-447-12202-3.
Christian Potiszil, Tsutomu Ota, Masahiro Yamanaka, Katsura Kobayashi, Ryoji Tanaka, Eizo Nakamura, Meteoritic and asteroidal amino acid heterogeneity: Implications for planetesimal alteration conditions and sample return missions. Earth and Planetary Science Letters, 653, 119205 (2025).
Li, Y.Q, Kitagawa, H., Ma, C.Q., Nakamura, E., Sakaguchi, C., Kobayashi, K., Hu, X.Y. Deep recycling of volatile elements in the mantle: Evidence from the heterogeneous B isotope in intra-plate basalts. Geoscience Frontiers, 15(6), 101900 (2024).
Auer, A., Belousov, A., Belousova, M., Kitagawa, H., Kobayashi, K. Tridymite formation as a direct consequence of explosive volcanism – evidence preserved in tuffisite veins and concurrently erupted volcanic ash. New Zealand Journal of Geology and Geophysics, pp.1-15 (2024).
2024-2025
April 22, 10:00 AM in 3F Seminar Room
Seminar by Dr. Eloïse Céline Brown
April 15, 10:00 AM in 3F Seminar Room
Seminar by Dr. Thasshwin Mathanlal (Research Fellow, The University of Aberdeen, UK)
April 8, 10:00 AM in 3F Seminar Room
Seminar by Ms. Maya Hamaguchi (M1, IPM [previous affiliation: Kyoto Pref.U.])
November 19, 10:00 AM in 3F Seminar Room
Seminar by Ms. Esmira Bibaj (PhD Candidate at Lehigh University)
November 5, 10:00 AM in 3F Seminar Room
Seminar by Mr. Adam Greig Corbett (PML)
October 22, 10:00 AM in 3F Seminar Room
Seminar by Mr. Rahul Kumar (PML)
October 15, 10:00 AM in 3F Seminar Room
Seminar by Mr.Torii Douglas-Song (PML)
October 8, 10:00 AM in 3F Tee Room
Seminar by Mr. Juan Felipe Bustos Moreno (Lehigh University, USA)
July 26, 10:00 AM in 3F Tee Room
Seminar by Dr. Wentao Cao (State University of New York at Fredonia)
June 21, 10:00 AM in 3F Tee Room
Seminar by Prof. María Isabel Marín-Cerón (EAFIT University, School of Applied Sciences and Engineering, Colombia)
May 21, 10:00 AM in 3F Seminar Room
Seminar by Dr. Natalia Pravikova (Lomonosov Moscow State University)