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重河優大

Shigekawa, Yudai

数理物質系化学域 , 助教
Department of Chemistry, Institute of Pure and Applied Sciences , Assistant Professor

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1. Purification of a Au tracer from a Pt target using UTEVA resin column chromatography Takuya Yokokita; Yudai Shigekawa; Akihiro Nambu; Michiko KitagawaHiromitsu Haba
Journal of Chromatography A 467399 (2026) Semantic Scholar
2. Lifetime of the singly charged ²²⁹Th nuclear isomer Y. Shigekawa; A. Yamaguchi; K. Tokoi; N. Sato (+4 著者) H. Haba
Nature Physics 22: 832 (2026) Semantic Scholar
3. Effect of ligand alkyl chain length on lanthanide extraction using liposomes incorporating diglycolamic acid Takeru Uehara; Shinya Yamasaki; Sota Shimizu; Yuichi Takaku (+1 著者) Aya Sakaguchi
Analytical Sciences (2026) Semantic Scholar
4. Attenuated Toxicity and Antitoxic Mechanism via Sodium Iodide Symporter Inhibition-Based Tumor-Selective Delivery in Astatine-211 Radioimmunotherapy Hiroki Takashima; Ryo Tsumura; Yoshikatsu Koga; Takahiro Anzai (+10 著者) Masahiro Yasunaga
Molecular Pharmaceutics (2026) Semantic Scholar
5. X-Ray-Induced Quenching of the ²²⁹Th Clock Isomer in CaF₂ Ming Guan; Michael Bartokos; Kjeld Beeks; Hiroyuki Fujimoto (+25 著者) Koji Yoshimura
Physical Review Letters 136: 013203 (2026) Semantic Scholar
6. Incomplete fusion reaction producing ²³⁴U, ²³³U, and ²³²U in the ²³²Th + ⁷Li reaction Ayumu Nagai; Hiroyuki Hosokawa; Kakeru Teranishi; Ryoga Morita (+10 著者) Akihiko Yokoyama
Radiochimica Acta 113: 847 (2025) Semantic Scholar
7. Development of an RF-carpet gas cell coupled to the RIKEN gas-filled recoil ion separator for chemistry of superheavy elements Y. Shigekawa; A. Yamaguchi; N. Sato; A. Takamine (+1 著者) H. Haba
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 1075: 170421 (2025) Semantic Scholar
8. Utilities of ionic liquid extraction with astatine ions and its extraction mechanism Akihiko Yokoyama; Kohei Kawasaki; Yuta Nagai; Hisanori Tazuru (+9 著者) Hiromitsu Haba
Radiochimica Acta 113: 373 (2025) Semantic Scholar
9. Trapping of triply charged thorium-229 for a nuclear clock A Yamaguchi; Y Shigekawa; H Haba; M WadaH Katori
Journal of Physics: Conference Series 2889: 012041 (2024) Semantic Scholar
10. Controlling ²²⁹Th isomeric state population in a VUV transparent crystal Takahiro Hiraki; Koichi Okai; Michael Bartokos; Kjeld Beeks (+25 著者) Koji Yoshimura
Nature Communications 15: 5536 (2024) Semantic Scholar
11. Laser spectroscopy of triply charged ²²⁹Th isomer for a nuclear clock Atsushi Yamaguchi; Yudai Shigekawa; Hiromitsu Haba; Hidetoshi Kikunaga (+2 著者) Hidetoshi Katori
Nature 629: 62 (2024) Semantic Scholar
12. pH dependence of perturbed angular correlation in DOTA chelated ¹¹¹In measured with ring-shape gamma-ray detectors Kenji Shimazoe; Kim Donghwan; Tomoko Mineo; Takeshi Sato (+10 著者) Mizuki Uenomachi
Interactions 245: 22 (2024) Semantic Scholar
13. Experimental apparatus for detection of radiative decay of ²²⁹Th isomer from Th-doped CaF₂ Takahiro Hiraki; Kjeld Beeks; Michael Bartokos; Hiroyuki Fujimoto (+25 著者) Koji Yoshimura
Hyperfine Interactions 245: 14 (2024) Semantic Scholar
14. Production and chemical separation of ²²⁹Pa toward observation of γ rays of ^229mTh Yudai Shigekawa; Xiaojie Yin; Akihiro Nambu; Yang WangHiromitsu Haba
Journal of Radioanalytical and Nuclear Chemistry 333: 1479 (2023) Semantic Scholar
15. Vacuum Ultraviolet Search from Thorium-229 Isomer in Crystal Toward Solid-State Nuclear Clock S. Takatori; Y. Fukunaga; M. Guan; T. Hiraki (+25 著者) Y. Yoda
2023 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium (EFTF/IFCS) (2023) Semantic Scholar
16. Simultaneous multi-nuclide imaging via reconstruction-free double-photon emission coincidence imaging method with parallel hole collimator and slat collimator Linlin Yan; Mizuki Uenomachi; Taisei Ueki; Donghwan Kim (+7 著者) Hiromitsu Haba
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 1053: 168305 (2023) Semantic Scholar
17. Tumor Targeting of ²¹¹At-Labeled Antibody under Sodium Ascorbate Protection against Radiolysis Hiroki Takashima; Kazunobu Ohnuki; Shino Manabe; Yoshikatsu Koga (+10 著者) Masahiro Yasunaga
Molecular Pharmaceutics 20: 1156 (2022) Semantic Scholar
18. Probing Optimal Reaction Energy for Synthesis of Element 119 from ⁵¹V+²⁴⁸Cm Reaction with Quasielastic Barrier Distribution Measurement Masaomi Tanaka; Pierre Brionnet; Miting Du; Julie Ezold (+29 著者) Takuya Yokokita
Journal of the Physical Society of Japan 91: 084201 (2022) Semantic Scholar
19. Coprecipitation with samarium hydroxide using multitracer produced through neutron-induced fission of 235U toward chemical study of heavy elements Yoshitaka Kasamatsu; Masahiro Nagase; Hidemi Ninomiya; Eisuke Watanabe (+5 著者) Atsushi Shinohara
Applied Radiation and Isotopes 179: 110006 (2022) Semantic Scholar
20. Anion-exchange Experiment of Zr, Hf, and Th in HNO3 and Quantum Chemical Study on the Nitrate Complexes toward Chemical Research on Element 104, Rf Eisuke Watanabe; Yoshitaka Kasamatsu; Takuya Yokokita; Sho Hayami (+7 著者) Atsushi Shinohara
Solvent Extraction and Ion Exchange 40: 590 (2021) Semantic Scholar

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21. Measurement of half-life and IC-electron-spectrum variation of ^235mU for various chemical environments Y. Shigekawa; Y. Kasamatsu; Y. Yasuda; M. Kaneko; A. Shinohara
ACTINIDES 2017 2017年7月
22. Measurement of the half-lives and the internal-conversion electron spectra of ^235mU depending on the chemical environments Yudai Shigekawa; Yoshitaka Kasamatsu; Yuki Yasuda; Atsushi Shinohara
EXON 2016 (VIII International Symposium on Exotic Nuclei) 2016年9月
23. 化学状態に依存した^235mUの半減期変化の測定重河優大; 笠松良崇; 安田勇輝; 篠原厚
日本化学会第96春季年会 (2016) 2016年3月
24. Developments of the collection apparatus for recoil products and spectrometer of low-energy internal-conversion electrons to study the deexcitation process of ^235mU Y. Shigekawa; Y. Kasamatsu; A. Shinohara
2015 International Chemical Congress of Pacific Basin Societies 2015年12月
25. Spectroscopy of Low-energy Conversion Electrons to investigate the Deexcitation Process of ^235mU Yudai Shigekawa; Yoshitaka Kasamatsu; Yuki Yasuda; Atsushi Shinohara
The 2nd International Symposium on Interactive Materials Science Cadet Program 2015年11月
26. ^235mUの壊変過程の解明を目指した低エネルギー内部転換電子分光測定重河優大; 笠松良崇; 安田勇輝; 篠原厚
2015日本放射化学会年会・第59回放射化学討論会 2015年9月
27. Development of a Collection Apparatus for Recoil Products for Study of the Deexcitation Process of ^235mU Yudai Shigekawa; Yoshitaka Kasamatsu; Atsushi Shinohara
The 1st International Symposium on Interactive Materials Science Cadet Program 2014年11月
28. Development of the collection apparatus for recoil products for study of the deexcitation process of ^235mU YUDAI SHIGEKAWA; YOSHITAKA KASAMATSU; ATSUSHI SHINOHARA
Fourth Joint Meeting of the Nuclear Physics Divisions of the American Physical Society and the Physical Society of Japan 2014年10月
29. U-235mの脱励起過程の研究に向けた反跳核捕集装置の開発重河優大; 笠松良崇; 篠原厚
2014日本放射化学会年会・第58回放射化学討論会 2014年9月
30. Extraction and trapping of 229mTh ions for measuring nuclear-decay half-lives of various ionic species of 229mTh and observing electronic bridge process Yudai Shigekawa; Atsushi Yamaguchi; Katsuyuki Tokoi; Nozomi Sato; Michiharu Wada; Hiromitsu Haba
6th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan (HAWAII2023)
31. Development of a cryogenic RF-carpet gas cell for the chemistry of superheavy elements Y. Shigekawa; A. Yamaguchi; N. Sato; A. Takamine; M. Wada; H. Haba
7th International Conference on the Chemistry and Physics of the Transactinide Elements (TAN 23)