The neutron-deficient ${}^{119}\mathrm{Ba}$ nucleus has been studied using the ${}^{58}\mathrm{Ni}({}^{64}\mathrm{Zn},2pn)$ reaction and the JUROGAM 3 $\gamma$-ray detector array coupled to the MARA recoil-mass separator setup. One new rotational band and several low-lying states are newly identified. A half-life of $T_{1/2}=0.36\left(2\right)\mu \mathrm{s}$ has been measured for the $5/2^{-}$ bandhead of the $\nu h_{11/2}$ band. The two previously known rotational bands are confirmed, except for the higher part of the +1/2 signature partner of the positive-parity band. Configurations are assigned based on the analysis of the observed quasiparticle alignments whose nature is unveiled by the calculations using the particle number conserving cranked shell model.

• Received 19 April 2021
• Accepted 22 July 2021

DOI:https://doi.org/10.1103/PhysRevC.104.014326