In-beam gamma-ray spectroscopy of ²⁵⁴No

The recoil-tagging technique has been employed to perform an in-beam gamma-ray spectroscopic study of the transfermium nucleus No. The experiment was carried out at the Department of Physics of the University of Jyvaskyla and utilised the JUROGAM array of germanium detectors coupled to the gasfilled recoil separator RITU. The ground-state rotational band was extended and evidence for non-yrast states was observed for the first time. PACS. 21.10.-k Properties of nuclei; nuclear energy levels – 23.20.-g Electromagnetic transitions – 29.30.-h Spectrometers and spectroscopic techniques