Researcher Information

BAJO Ken-ichi

Assistant Professor

Noble gas cosmochemistry

Department of Earth and Planetary Sciences, Earth and Planetary System Science


Cosmochemistry reveled by using noble gas isotopes in extra-terrestrial matters

FieldGeochemistry, Mass spectrometry
KeywordNoble gas

Representative Achievements

K. Bajo, S. Itose, M. Matsuya, M. Ishihara, K. Uchino, M. Kudo, I. Sakaguchi, and H. Yurimoto (2016) High spatial resolution imaging of helium isotope by TOF-SNMS. Surface and Interface Analysis, 48, 1190-1193.
K. Bajo, C.T. Olinger, A.J.G. Jurewicz, D.S. Burnett, I. Sakaguchi, T.T. Suzuki, S. Itose, M. Ishihara, K. Uchino, R. Wieler and H. Yurimoto (2015) Depth profiling analysis of solar wind helium collected in diamond-like carbon film from Genesis. Geochemical Journal, 49, 559-566.
K. Bajo, H. Sumino, M. Toyoda, R. Okazaki, T. Osawa, M. Ishihara, I. Katakuse, K. Notsu, G. Igarashi and K. Nagao (2012) Construction of a newly designed small-size mass spectrometer for helium isotope analysis: Toward the continuous monitoring of 3He/4He ratios in natural fluids. Mass Spectrometry, 1, A0009.
K. Bajo, T. Akaida, N. Ohashi, T. Noguchi, T. Nakamura, Y. Nakamura, H. Sumino and K. Nagao (2011) Single grain noble gas analysis of Antarctic micrometeorites by stepwise heating method with a newly constructed miniature furnace. Earth, Planets and Space, 63, 1097-1111.
K. Nagao, R. Okazaki, T. Nakamura, Y.N. Miura, T. Osawa, K. Bajo, S. Matsuda, M. Ebihara, T.R. Ireland, F. Kitajima, H. Naraoka, T. Noguchi, A. Tsuchiyama, H. Yurimoto, M.E. Zolensky, M. Uesugi, K. Shirai, M. Abe, T. Yada, Y. Ishibashi, A. Fujimura, T. Mukai, M. Ueno, T. Okada, M. Yoshikawa and J. Kawaguchi (2011) Irradiation history of Itokawa regolith material deduced from noble gases in the Hayabusa samples. Science, 333, 1128-1131.
Academic degreePh. D
Academic background2006 Bachelor Degree of Science at Tokyo University of Science
2008 Master Degree of Science at the University of Tokyo
2011 Doctor Degree of Science at the University of Tokyo
2011 Project researcher, Department of Natural History Sciences, Graduate School of Science, Hokkaido University
2013 Research Assistant Professor, Creative Research Institution, Hokkaido University
2014- Assistant Professor, Earth and Planetary System Sciences, Department of Earth and Planetary Sciences, Graduate School of Science, Hokkaido University
Room addressCreative Reseach Institution