Energy of the4(+)isomer and new bands in the odd-odd nucleusBr74

High-spin states of the odd-odd nucleus ${}_{}{}^{74}{}_{}{}^{}\mathrm{Br}$ were investigated via the reactions ${}_{}{}^{58}{}_{}{}^{}\mathrm{Ni}$ ${(}^{19}$F,2pn${)}^{74}$Br and ${}_{}{}^{65}{}_{}{}^{}\mathrm{Cu}$ ${(}^{12}$C,3n${)}^{74}$Br at beam energies of 62 and 50 MeV, respectively. On the basis of coincidence data new levels have been introduced and partly grouped into rotational bands. Some of these new states decay to known levels of negative-parity bands built on both the ground state and the long-lived $4^{\mathrm{}(+)\mathrm{}}$ isomer. Thus, an excitation energy of 13.8 keV has been deduced for the long-lived isomer in ${}_{}{}^{74}{}_{}{}^{}\mathrm{Br}$. The level sequences observed are interpreted in terms of Nilsson configurations in conjunction with collective excitations.