The low-spin levels of the odd-odd nucleus ${}^{168}\mathrm{Lu}$ from ${}^{168}\mathrm{Hf}$ ${(T}_{1/2}=25.95\mathrm{}\min )$ electron-capture decay were investigated by direct γ and γ-γ coincidence measurements. The sources of ${}^{168}\mathrm{Hf}$ were produced with the ${}^{156}\mathrm{Gd}{(}^{16}\mathrm{O},4n)$ reaction and radiochemically separated using chromatographic methods. A level scheme of 39 new levels in the ${}^{168}\mathrm{Lu}$ nucleus was proposed, accounting for 107 of 119 observed γ transitions assigned to ${}^{168}\mathrm{Hf}$ electron-capture decay. Transition multipolarities, level-spins, and parities were deduced or proposed. A tentative decay scheme was proposed. Level structure was discussed in the framework of the particle-rotor and Nilsson models.

• Received 26 December 1996

DOI:https://doi.org/10.1103/PhysRevC.55.2279