The α and β decays of ${}_{}{}^{169\mathrm{-}173}{}_{}{}^{}\mathrm{Os}$ were studied using ${}_{}{}^{114}{}_{}{}^{}\mathrm{Cd}$${(}^{58}$Ni,xn) and ${}_{}{}^{140}{}_{}{}^{}\mathrm{Ce}$${(}^{36}$Ar,xn) reactions. For ${}_{}{}^{169,171}{}_{}{}^{}\mathrm{Os}$ new α rays and α-coincident γ rays were observed; for ${}_{}{}^{170\mathrm{-}173}{}_{}{}^{}\mathrm{Os}$ β-delayed γ transitions could be identified for the first time. Evidence for isomeric states in ${}_{}{}^{171,173}{}_{}{}^{}\mathrm{Re}$ was found. The nuclear structure in the daughter isotopes is interpreted in terms of single-particle states in the frame of the Nilsson model.

• Received 14 November 1994

DOI:https://doi.org/10.1103/PhysRevC.51.1736