Band structure inTa180studied with transfer reactions

The differential cross sections of emitted particles have been measured in the reactions ${}_{}{}^{181}{}_{}{}^{}\mathrm{Ta}(p, d){}_{}{}^{180}{}_{}{}^{}\mathrm{Ta}$ at 19 MeV, ${}_{}{}^{179}{}_{}{}^{}\mathrm{Hf}({}_{}{}^3{}_{}{}^{}\mathrm{He}, d){}_{}{}^{180}{}_{}{}^{}\mathrm{Ta}$ at 36 MeV, and ${}_{}{}^{179}{}_{}{}^{}\mathrm{Hf}(\alpha , t){}_{}{}^{180}{}_{}{}^{}\mathrm{Ta}$ at 62.2 MeV. The energy resolution was 15 to 40 keV depending on the reaction. Differential cross sections were fitted using a distorted wave program and level characteristics of ${}_{}{}^{180}{}_{}{}^{}\mathrm{Ta}$ were deduced in the framework of the Nilsson model for odd-odd deformed nuclei including Coriolis coupling. Members of rotational bands have been identified up to 1 MeV excitation energy. The short-lived isomer in ${}_{}{}^{180}{}_{}{}^{}\mathrm{Ta}$ with spin $1^{+}$ was found to be the ground state whereas the long-lived isomer at 82±20 keV excitation energy has spin $9^{-}$.