Excited states in the neutron-deficient isotopes ${}^{163}$Os and ${}^{165}$Os were identified using the JUROGAM and GREAT spectrometers in conjunction with the RITU gas-filled separator. The ${}^{163}$Os and ${}^{165}$Os nuclei were populated via the ${}^{106}$Cd(${}^{60}$Ni,3$n$) and ${}^{92}$Mo(${}^{78}$Kr,2$p$3$n$) reactions at bombarding energies of 270 MeV and 357 MeV, respectively. Gamma-ray emissions from these nuclei have been established unambiguously using the recoil-decay tagging technique and a coincidence analysis has allowed level schemes to be established. These results suggest that the yrast states are based upon negative-parity configurations originating from the $\nu$$f_{7/2}$ and $\nu$$h_{9/2}$ orbitals.

• Received 11 March 2013

DOI:https://doi.org/10.1103/PhysRevC.87.054309