High-spin states in ${}_{35}{}^{72}\mathrm{Br}_{37}$ were studied using the ${}^{40}\mathrm{Ca}\left({}^{36}\mathrm{Ar},3pn\right)$ reaction. The existing level scheme has been significantly modified and extended. Evidence has been found for a spin reassignment of $-1\hslash$ to the previously observed negative-parity band, which carries implications for the interpretation of a signature inversion in this structure. One signature of the previously assigned positive-parity band is interpreted as negative parity and has been extended to $I^{\pi }=\left({22}^{-}\right)$ and its signature partner has been observed up to $I^{\pi }=\left({19}^{-}\right)$ for the first time. The remaining positive-parity band has been extended to $I^{\pi }=\left({29}^{+}\right)$. A sequence of states observed to $I^{\pi }=\left({22}^{+}\right)$ may be the signature partner of this structure. Configurations have been assigned to each of these three structures through comparisons to cranked Nilsson-Strutinsky calculations.

• Received 20 October 2003

DOI:https://doi.org/10.1103/PhysRevC.69.034316