Research theme for competitive and other funds (2)：
2013 - 2017 Development of Sr-adsorptive fiber with flexible interfacial conformation provided by polymer chains bound on fiber surface for Sr-90 measurement
2010 - 2012 Development of electron-impact ion source using RF electric field for enhancing ionization rate of thermal ionization mass spectrometer
Papers (33)：
Tomita Ryohei, Tomita Jumpei, Yomogida Takumi, Suzuki Daisuke, Miyamoto Yutaka, Yasuda Kenichiro. Accurate automatic analysis of individual uranium particles to improve the timeliness of safeguards environmental sample analysis using an LG-SIMS instrument and SEM-micromanipulation. Analytical Methods. 2025. 17. 44. 9017-9025
Tomita Ryohei, Tomita Jumpei, Suzuki Daisuke, Miyamoto Yutaka, Yasuda Kenichiro. Improvement in automated particle measurement using micromanipulation and large geometry secondary ion mass spectrometry to remove the particle mixing effect of uranium particles. Journal of Nuclear Science and Technology. 2025. 62. 10. 939-948
Tomita Jumpei, Tomita Ryohei, Suzuki Daisuke, Yasuda Kenichiro, Miyamoto Yutaka. Simple technique for the preparation of uranium-impregnated porous silica particles and their application as working standard particles for analysis of the safeguards environmental samples. Journal of Nuclear Science and Technology. 2025. 12
Tomita Jumpei, Tomita Ryohei, Suzuki Daisuke, Yasuda Kenichiro, Miyamoto Yutaka. Sensitive $^{236}$U/$^{238}$U isotopic analysis of trace uranium in safeguards environmental samples using multicollector inductively coupled plasma mass spectrometry. Journal of the American Society for Mass Spectrometry. 2024. 35. 6. 1178-1183
Usuda Shigekazu, Shinohara Nobuo, Sakurai Satoshi, Magara Masaaki, Miyamoto Yutaka, Esaka Fumitaka, Yasuda Kenichiro, Kokubu Yoko, Hirayama Fumio, Lee C. G., et al. Research and development on environmental radionuclides for nuclear non-proliferation at Japan Atomic Energy Agency. KEK Proceedings 2007-16. 2008. 13-22
Magara Masaaki, Usuda Shigekazu, Sakurai Satoshi, Shinohara Nobuo, Esaka Fumitaka, Kokubu Yoko, Suzuki Daisuke, Yasuda Kenichiro, Lee C. G., Inagawa Jun, et al. Development of analytical technique for safeguards environmental samples at JAEA; Current status and development of analytical method for isotope ratios of plutonium particles. Kaku Busshitsu Kanri Gakkai (INMM) Nihon Shibu Dai-29-Kai Nenji Taikai Rombunshu (CD-ROM). 2008. 6
Patents (1)：
イオン交換分離用ナノカラム
Lectures and oral presentations (73)：
None
(令和7年度JAEA-NRA安全研究成果報告会)
None
(分析化学会第74年会)
Accurate determination of extremely low $^{233}$U/$^{238}$U in high enriched uranium by MC-ICP-MS
(第26回環境放射能研究会)
Overview and research finding of research group for safeguards analytical chemistry
(令和6年度JAEA-NRA安全研究成果報告会)
Development to measure plutonium isotope ratio of the immersed particles by secondary ion mass spectrometry
(日本放射化学会第68回討論会(2024))
