${}_{}{}^{174}{}_{}{}^{}\mathrm{Ta}$ has been studied through the ${}_{}{}^{169}{}_{}{}^{}\mathrm{Tm}$${(}^9$Be,4n) fusion-evaporation reaction in the energy range E${(}^9$Be)=40–65 MeV. γ- and x-ray in-beam and activity singles spectra, γ-γ-t coincidences, and angular-distribution measurements were performed. Four rotational structures have been found and interpreted on the basis of coupling systematics. Mixing ratio signs have been calculated using a semiclassical method and compared with the signs of the angular-distribution coefficients, in order to consolidate configuration assignments. ‘‘Identical bands,’’ i.e., bands with similar transition energies, have been found in neighboring odd and doubly-odd ${}_{}{}^{171\mathrm{-}174}{}_{}{}^{}\mathrm{Ta}$. This similarity is interpreted here as due to fortuitous compensations between different transverse and collective angular momenta and moments of inertia.

• Received 11 May 1992

DOI:https://doi.org/10.1103/PhysRevC.46.1203