High-spin states in odd-odd 170 Ta

High-spin states in ${}^{170}\mathrm{Ta}$ have been studied via ${}^{159}{\mathrm{T}\mathrm{b}(}^{16}\mathrm{O},5n\ensuremath{\gamma}{)}^{170}\mathrm{Ta}$ reaction through excitation functions, K x-\ensuremath{\gamma}, and $\ensuremath{\gamma}\ensuremath{-}\ensuremath{\gamma}\ensuremath{-}t$ coincidence measurements. Three rotational bands have been identified which consist of two strongly coupled bands and a semidecoupled one. The quasiparticle configurations of these bands and the interpretation of experimental results are discussed based on the existing knowledge of neighboring odd-mass and odd-odd nuclei and in the framework of the cranked-shell model. Low-spin signature inversion in the $\ensuremath{\pi}{9/2}^{\ensuremath{-}}[514]\ensuremath{\bigotimes}\ensuremath{\nu}{5/2}^{+}[642]$ and $\ensuremath{\pi}{1/2}^{\ensuremath{-}}[541]\ensuremath{\bigotimes}\ensuremath{\nu}{5/2}^{+}[642]$ bands are discussed. A delay (reduction) of the band-crossing frequency is observed in the $\ensuremath{\pi}{1/2}^{\ensuremath{-}}[541]\ensuremath{\bigotimes}\ensuremath{\nu}{5/2}^{+}[642]$ $(\ensuremath{\pi}{5/2}^{+}[402]\ensuremath{\bigotimes}\ensuremath{\nu}{5/2}^{+}[642])$ band. This configuration-dependent crossing frequency is discussed in comparison with the AB crossing frequencies in the related bands of neighboring odd-Z isotopes.