The low-lying excitations in odd-odd ${}^{150}\mathrm{Pm}$ have been studied through proton-induced reaction on ${}^{150}\mathrm{Nd}$ with an array of five Compton-suppressed Clover HPGe detectors and one segmented planar Ge detector. The relative excitation functions for the observed $\gamma$ rays have been studied using singles data at two beam energies of 8 and 9 MeV. Sixteen new $\gamma$ rays and 15 new levels have been placed in the level scheme of ${}^{150}\mathrm{Pm}$ based on $\gamma \text{−}\gamma$ coincidence data. The relative intensities for the observed $\gamma$ rays have been determined using total and gated projections. Tentative spin-parity assignments were made for a few low-lying excitations of ${}^{150}\mathrm{Pm}$, using limited angular distribution data and other information. Lifetimes were estimated for two excited levels in this nucleus using generalized centroid difference analysis, applied in the nanosecond range, with Ge detectors. Large-basis shell-model and projected shell-model calculations were performed to interpret the experimentally observed levels. The present work indicates a $1^{-}$ ground state, a $2^{-}$ state close to the ground state $(\approx 50\mathrm{keV})$ and a low-lying $6^{-}$ isomeric state in this odd-odd nucleus along with emerging band structures developed with two quasiparticle configurations.

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• Electromagnetic transitions
• Energy levels
• Nuclear structure & decays
• 150 ≤ A ≤ 189
• Gamma ray spectroscopy
• Shell model