Decay Spectroscopy Of Sc-50 And Sc-50m To Ti-50

The beta decay of the isomeric and ground state of Sc-50 to the semimagic nucleus Ti-50(22)28 has been studied using a Ca-50 beam delivered to the GRIFFIN gamma-ray spectrometer at the TRIUMF-ISAC facility. beta-decay branching ratios are reported to 16 excited states with a total of 38 gamma-ray transitions linking them. These new data significantly expand the information available over previous studies. Relative intensities are measured to less than 0.001% that of the strongest transition with the majority of gamma-ray transitions observed here in beta decay for the first time. The data are compared with shell-model calculations utilizing both phenomenologically derived interactions employed in the pf shell as well as a state-of-the-art ab initio-based interaction built in the valence-space inmedium similarity renormalization-group framework.