Production and chemical separation of ${}^{229}$Pa toward observation of $\gamma$ rays of ${}^{229\mathrm{m}}$Th

Yudai Shigekawa, Xiaojie Yin, Akihiro Nambu +2

To observe the $\gamma$ rays emitted from the low-lying isomeric state of ${}^{229}$Th (${}^{229\mathrm{m}}$Th), we aim to dope fluoride crystals with its precursor ${}^{229}$Pa. In this study, w…