Observation of the radiative decay of the ${}^{229}\mathrm{Th}$ nuclear clock isomer

Sandro Kraemer, Janni Moens, Michail Athanasakis-Kaklamanakis +32

The nucleus of the radioisotope thorium-229 (${}^{229}$Th) features an isomer with an exceptionally low excitation energy that enables direct laser manipulation of nuclear states.…