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タイトル: Controlling ²²⁹Th isomeric state population in a VUV transparent crystal著者: Hiraki, Takahiro; Okai, Koichi; Bartokos, Michael; Beeks, Kjeld; Fujimoto, Hiroyuki; Fukunaga, Yuta; Haba, Hiromitsu; Kasamatsu, Yoshitaka; Kitao, Shinji; Leitner, Adrian; Masuda, Takahiko; Guan, Ming; Nagasawa, Nobumoto; Ogake, Ryoichiro; Pimon, Martin; Pressler, Martin; Sasao, Noboru; Schaden, Fabian; Schumm, Thorsten; Seto, Makoto; Shigekawa, Yudai; Shimizu, Kotaro; Sikorsky, Tomas; Tamasaku, Kenji; Takatori, Sayuri; Watanabe, Tsukasa; Yamaguchi, Atsushi; Yoda, Yoshitaka; Yoshimi, Akihiro; Yoshimura, Koji抄録: The radioisotope thorium-229 (²²⁹Th) is renowned for its extraordinarily low-energy, long-lived nuclear first-excited state. This isomeric state can be excited by vacuum ultraviolet (VUV) lasers and ²²⁹Th has been proposed as a reference transition for ultra-precise nuclear clocks. To assess the feasibility and performance of the nuclear clock concept, time-controlled ex ...

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