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.

LATEST NEWS


On the origin and evolution of the asteroid Ryugu: A comprehensive geochemical perspective

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 ]

LATEST PUBLICATIONS

2024-2025


Ratnayake, D.M., Tanaka, R. & Nakamura, E.. Biogeochemical impact of nickel and urea in the great oxidation event. Communications Earth & Environment, 6(654), (2025).

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Srivastava, Y., Sarbadhikari, A.B., Nair, V.M., Kumar, A., Kadlag, Y., Mahajan, R.R., Srivastava, N., Panwar, N., Das, A., Tanaka, R., Day, J.M.D., Shukla, A.D., Ray, D., Verma, A.J., Rani, A., Arora, G., Panda, D.K., Vijayan, S., Bhardwaj, A. Petrogenesis of the Rantila meteorite fall and implications for the origin of aubrites. Meteoritics & Planetary Science, 60(6), 1318–1335 (2025).

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Rahul Kumar, Katsura Kobayashi, Christian Potiszil, Tak Kunihiro. Development of a technique to identify μm-sized organic matter in asteroidal material: An approach using machine learning. Applied Computing and Geosciences, 27, 100277 (2025).

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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).

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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).

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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.




SEMINAR, SYMPOSIUM & WORKSHOP

2024-2025


August 20, 16:00-17:00 in 3F Seminar Room
PhD defence presentation by Mr. Rahul Kumar


August 19, 10:00-11:00 in 3F Seminar Room
PhD defence presentation by Mr.Torii Douglas-Song


July 2, 10:00 AM in 3F Seminar Room
Seminar by Mr.Torii Douglas-Song


June 24, 10:00 AM in 3F Seminar Room
Seminar by Mr. Rahul Kumar


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)




SOCIAL MEDIA