The reaction ${}_{}{}^{168}{}_{}{}^{}\mathrm{Er}$(d,2nγ) and conventional in-beam γ-ray spectroscopy have been used to assign, for the first time, many γ-ray transitions to ${}_{}{}^{168}{}_{}{}^{}\mathrm{Tm}$. On the basis of γ-γ coincidence data, some of these observed γ rays are identified as transitions between the low-spin members of rotational bands in ${}_{}{}^{168}{}_{}{}^{}\mathrm{Tm}$, specifically, those with ${\mathit{K}}^{\mathrm{\pi }}$=$3^{+}$, ($3^{\mathrm{-}}$), and ($4^{\pm }$).

• Received 12 September 1994

DOI:https://doi.org/10.1103/PhysRevC.52.1694