YUDAI SHIGEKAWA

シゲカワユウダイ | YUDAI SHIGEKAWA

Affiliation and department：
Job title： Postdoctoral Researcher

Research field (2)： Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics , Inorganic and coordination chemistry

Research keywords (12)： magnetic bottle , nuclear clock , radiochemistry , nuclear chemistry , super heavy elements , electron spectroscopy , internal conversion , half-life variation , thorium , uranium , 235U , 229Th

Research theme for competitive and other funds (8)：

2023 - 2027 トリウム229核異性体の内部転換抑制手法の開発によるガンマ線放出過程の解明
2022 - 2025 光子対診断治療学の総括
2022 - 2025 もつれ光子対放出原子核と分子プローブの創成による生体内化学環境の医療診断
2021 - 2025 レーザーによるコヒーレントな原子核操作の実現ー原子核時計の創成と応用に向けて
2020 - 2023 Observing the electron bridge process of the Th-229 isomer utilizing ion-molecule reactions

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Papers (27)：

Atsushi Yamaguchi, Yudai Shigekawa, Hiromitsu Haba, Hidetoshi Kikunaga, Kenji Shirasaki, Michiharu Wada, Hidetoshi Katori. Laser spectroscopy of triply charged ²²⁹Th isomer for a nuclear clock. Nature. 2024
Kenji Shimazoe, Kim Donghwan, Tomoko Mineo, Takeshi Sato, Seiichi Ohta, Toshifumi Tatsumi, Akira Sugiyama, Kenzo Yamatsugu, Sachiyo Nomura, Ryohei Terabayashi, et al. pH dependence of perturbed angular correlation in DOTA chelated ¹¹¹In measured with ring-shape gamma-ray detectors. Interactions. 2024. 245. 1. 22
Takahiro Hiraki, Kjeld Beeks, Michael Bartokos, Hiroyuki Fujimoto, Yuta Fukunaga, Hiromitsu Haba, Yoshitaka Kasamatsu, Shinji Kitao, Adrian Leitner, Takahiko Masuda, et al. Experimental apparatus for detection of radiative decay of ²²⁹Th isomer from Th-doped CaF₂. Hyperfine Interactions. 2024. 245. 1
Yudai Shigekawa, Xiaojie Yin, Akihiro Nambu, Yang Wang, Hiromitsu Haba. Production and chemical separation of ²²⁹Pa toward observation of γ rays of ^229mTh. Journal of Radioanalytical and Nuclear Chemistry. 2023
S. Takatori, Y. Fukunaga, M. Guan, T. Hiraki, T. Masuda, R. Ogake, K. Okai, N. Sasao, K. Shimizu, S. Uetake, et al. Vacuum Ultraviolet Search from Thorium-229 Isomer in Crystal Toward Solid-State Nuclear Clock. 2023 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium (EFTF/IFCS). 2023

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MISC (12)：

高取沙悠理, BEEKS Kjeld, 藤本弘之, 福永優太, GUAN M., 羽場宏光, 平木貴宏, 笠松良崇, 北尾真司, 小無健司, et al. Characterization of Thorium-229 doped crystals for the solid-state nuclear clock using XAFS. 日本物理学会講演概要集(CD-ROM). 2023. 78. 2
福永優太, BEEKS Kjeld, 藤本弘之, 平木貴宏, GUAN M., 羽場宏光, 笠松良崇, 北尾真司, 小無健司, 増田孝彦, et al. Development of nuclear resonant scattering target for thorium-229 isomer level search. 日本物理学会講演概要集(CD-ROM). 2023. 78. 1
平木貴宏, BEEKS Kjeld, 藤本弘之, 福永優太, GUAN M., 羽場宏光, 笠松良崇, 北尾真司, 小無健司, 増田孝彦, et al. Search for vacuum-ultraviolet photon by deexcitation of the nuclear isomeric state of thorium-229. 日本物理学会講演概要集(CD-ROM). 2023. 78. 1
高島大輝, 大貫和信, 眞鍋史乃, 古賀宣勝, 津村遼, 安西高廣, 王洋, 殷小杰, 佐藤望, 重河優大, et al. アスコルビン酸Naは放射線分解による能動的標的化の障害からアスタチン-211結合抗体を保護する(Sodium ascorbate protection against radiolysis is indispensable to maintain active targeting of 211At-labeled antibody). 日本癌学会総会記事. 2022. 38回. 96-96
高島大輝, 眞鍋史乃, 眞鍋史乃, 眞鍋史乃, 大貫和信, 古賀宣勝, 古賀宣勝, 津村遼, 安西高廣, WANG Yang, et al. Preclinical evaluation of astatine-211-conjugated antibody. 日本がん分子標的治療学会学術集会プログラム・抄録集. 2022. 26th

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Lectures and oral presentations (22)：

Progress toward observing γ-rays emitted from 229mTh by doping fluoride crystals with 229Pa
(5th International Conference on Application of RadiotraCers and Energetic Beams in Sciences (ARCEBS 2023) 2023)
Th-229mのγ線観測に向けたPa-229のフッ化物結晶への導入法及び光子測定装置の開発
(日本放射化学会第66回討論会(2022) 2022)
Th-229mの壊変特性の解明に向けた高周波イオン収集・質量分離装置の開発
(日本放射化学会第65回討論会(2021) 2021)
U-233のα-γ同時計数測定によるTh-229の原子核励起状態の半減期の決定
(2020)
核化学研究用高周波イオン収集システムの開発
(日本放射化学会第64回討論会(2020) 2020)

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Education (3)：

2016 - 2019 Osaka University Graduate School of Science Department of Chemistry
2014 - 2016 Osaka University Graduate School of Science Department of Chemistry
2010 - 2014 Osaka University Undergraduate School of Science Department of Chemistry

Professional career (1)：

Dr. Sci. (Osaka University)

Work history (5)：

2023/04 - 現在 RIKEN RIKEN Nishina Center for Accelerator-Based Science, Nuclear Chemistry Group Postdoctoral Researcher
2022/04 - 2023/03 RIKEN Nuclear Chemistry Research Team, RI Application Research Group, RIKEN Nishina Center for Accelerator-Based Science Postdoctoral Researcher
2019/04 - 2022/03 RIKEN Nuclear Chemistry Research Team, RI Application Research Group, RIKEN Nishina Center for Accelerator-Based Science Special Postdoctoral Researcher (SPDR)
2016/04 - 2019/03 JSPS JSPS research fellow (DC1)
2018/10 - 2018/10 JSPS JSPS research fellow (PD) withdrawal

Awards (5)：

2023/09 - 日本放射化学会若手優秀発表賞(日本放射化学会第67回討論会(2023)) Th-229mの電子架橋遷移の観測に向けたTh-229mイオンの引き出しとトラップ
2023/03 - RIKEN RIKEN Ohbu Research Incentive Award Estimation of radiative half-life of 229mTh by half-life measurement of other nuclear excited states in 229Th
2018/09 - 日本放射化学会若手優秀発表賞阻止電場ー磁気ボトル型電子分光装置の開発およびU-235mの内部転換電子分光測定
2017/09 - 日本放射化学会若手優秀発表賞 233Uのα線-電子コインシデンス測定による229Thの内部転換電子観測の試み
2014/09 - 日本放射化学会若手優秀発表賞 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

Association Membership(s) (3)：

THE CHEMICAL SOCIETY OF JAPAN , THE PHYSICAL SOCIETY OF JAPAN , THE JAPAN SOCIETY OF NUCLEAR AND RADIOCHEMICAL SCIENCES

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