Yasuo TAKEUCHI

Yasuo TAKEUCHI

Dr. Sci. Tokyo Institute of Technology, 1995
Professor

Research group: Particle Physics Group
Phone: +81-78-803-5634
E-mail: takeuchiphys.sci.kobe-u.ac.jp
Personal HP: https://ppwww.phys.sci.kobe-u.ac.jp/~takeuchi/

Research Description

I am mainly working on the underground experiments to study astroparticle physics. Especially, I am working the following projects; neutrino observation with the world's largest underground water Cherenkov detector: Super-Kamiokande (SK), the research and development related to Hyper-Kamiokande (HK), the next-generation large water Cherenkov detector, which is scheduled to start observations in 2027, search for rare events like dark matter using a large liquid xenon detector (XENONnT detector), and Tokai to Kamioka long base line neutrino oscillation experiment (T2K experiment). I am also working on the research and development of extremely low-radiation technology, which is indispensable for these underground experiments. In particular, I am working on assay and reduction of radioactive noble gas radon which becomes a common background in many underground experiments.
Since the nature of neutrinos and the existence of dark matter in universe are phenomena which can not be explained by the Standard Model of elementary particle physics, it is necessary to unravel their properties by experiment. Students interested in such research fields, please do not hesitate to contact me by e-mail etc. These are international collaborative researches. International students are also accepted.

Main Publications

The latest list is available at researchmap, ORCID, and/or Web of Science.

• "Removal of Radioactive Noble Gas Radon from Air by Ag-Zeolite", H. Ogawa, Y. Takeuchi, H. Sekiya, K. Iyoki, M. Matsukura, T. Wakihara, Y. Nakano, S. Hirano, A. Taniguchi, Prog. Theor. Exp. Phys., ptaf007, DOI: 10.1093/ptep/ptaf007
• "Study of Radon Removal Performance of Silver-Ion Exchanged Zeolite from Air for Underground Experiments", T. Sone, Y. Takeuchi, M. Matsukura, Y. Nakano, H. Ogawa, H. Sekiya, T. Wakihara, S. Hirano, A. Taniguchi, Prog. Theor. Exp. Phys. 2025, 013H01 (2025).
• "Solar neutrino measurements using the full data period of Super-Kamiokande-IV", The Super-Kamiokande Collaboration, Phys. Rev. D 109, 092001 (2024).
• "Direct dark matter searches with the full data set of XMASS-I", The XMASS Collaboration, Phys. Rev. D 108, 083022 (2023).
• "Evaluation of the radon adsorption efficiency of activated carbon fiber using tetrafluoromethane", Y. Kotsar, Y. Nakano, Y. Takeuchi, K. Miuchi, Prog. Theor. Exp. Phys. 2022, 023H01 (2022).
• "Evaluation of radon adsorption efficiency values in xenon with activated carbon fibers", Y. Nakano, K. Ichimura, H. Ito, T. Okada, H. Sekiya, Y. Takeuchi, S. Tasaka, M. Yamashita, Prog. Theor. Exp. Phys. 2020, 113H01 (2020).
• "気体アルゴン中ラドンの吸着脱離実験と極低レベルラドン濃度測定方法の開発", 池田一得, 外間智規, 田阪茂樹, 竹内康雄, RADIOISOTOPES 59 (2010) 29.
• "Solar neutrino measurements in Super-Kamiokande-I", The Super-Kamiokande Collaboration, Phys. Rev. D73, (2006) 112001.
• "Electron Energy Spectra, Fluxes, and Day-Night Asymmetries of 8B Solar Neutrinos from the 391-Day Salt Phase SNO Data Set", The SNO Collaboration, Phys. Rev. C72, (2005) 055502.
• "Development of Super-high Sensitivity Radon Detector for the Super-Kamiokande Detector" C.Mitsuda, T.Kajita, K.Miyano, S.Moriyama, M.Nakahata, Y.Takeuchi, and S.Tasaka, Nucl. Instr. and Meth. A497 (2003)414.
• "Development of data acquisition system using RISC/UNIX workstation", Y.Takeuchi, T.Tanimori, and Y.Yasu, Nucl. Instr. and Meth. A328 (1993) 526-534.