Prof Shinji Tokonami

Prof Shinji Tokonami is a director at Hirosaki University Institute of Radiation Emergency Medicine in the Department of Radiation Measurements and Physical Dosimetry as a full professor, where he specializes in radiation measurements and dose assessment. In 1995 Dr. Tokonami earned his Ph.D. in engineering from Waseda University. Throughout his career he has been involved with radiation research at Waseda University, the National Institute of Radiological Sciences, and Hirosaki University. In addition, he is a member of several International Organizations for Standards’ committees regarding radon and radiation measurements. He also developed multiple measurement techniques and equipment related to his field. In particular, he established a passive measurement technique for detecting radon-222 & radon-220. This discriminative measurement technique for radon isotopes was published as ISO 16641. As his extensive expertise, he has an international patent in US (US11688525, 2023), Europe (EP3608920, 2021) as well as in Japan (JP7095894, 2022): Radioactive Fine Particle Manufacturing System, and Radioactive Fine Particle Manufacturing Method. Finally, Prof. Tokonami founded the Asia Oceanic Regional Association on Radon (AORA) and served as its inaugural president. His contributions, including over 345 peer-reviewed publications, have established him as a leading figure in his field.