Spectroscopy of ${}^{194}$Po

Abstract

Prompt, in-beam $\gamma$ rays following the reaction ${}^{170}$Yb + 142 MeV ${}^{28}$Si were measured at the ATLAS facility using 10 Compton-suppressed Ge detectors and the Fragment Mass Analyzer. Transitions in ${}^{194}$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 ${}^{194}$Po is more collective than that observed in the heavier polonium isotopes and indicates that the structure has started to evolve towards the more collective nature expected for deformed nuclei.

8 pages, revtex 3.0, 4 figs. available upon request