Spectroscopy ofPo194

Prompt, in-beam $\gamma$ rays following the reaction ${}_{}{}^{170}{}_{}{}^{}\mathrm{Yb}$ + 142 MeV ${}_{}{}^{28}{}_{}{}^{}\mathrm{Si}$ were measured at the ATLAS facility using 10 Compton-suppressed Ge detectors and the Fragment Mass Analyzer. Transitions in ${}_{}{}^{194}{}_{}{}^{}\mathrm{Po}$ were identified and placed using $\gamma$-ray singles and coincidence data gated on the mass of the evaporation residues. A level spectrum up to $J\approx 10\hslash$ was established. The structure of ${}_{}{}^{194}{}_{}{}^{}\mathrm{Po}$ is more collective than that observed in the heavier polonium isotopes and indicates that the structure has started to evolve toward the more collective nature expected for deformed nuclei.