High-spin states in ${}^{165}$Er have been studied experimentally using the ${}^{160}$Gd(${}^9$Be, 4$n$) reaction at beam energies of 42 and 45 MeV. The previously known bands based on the $5/2^{+}\left[642\right]$, $5/2^{-}\left[523\right]$, and $11/2^{-}\left[505\right]$ configurations are extended to $(49/2^{+})$, $(45/2^{-})$, and $(31/2^{-})$ states, respectively. The rotational bands in ${}^{165}$Er generally show gradual alignment processes, indicating strong band interactions associated with the $i_{13/2}$ neutron alignments. The band properties are compared with those in the neighboring nuclei and discussed within the framework of the cranked shell model.

• Received 28 March 2011

DOI:https://doi.org/10.1103/PhysRevC.84.017303