Jπassignment to the 4.841 MeV level inPb208

Abstract

A study of $\gamma$ rays in coincidence with inelastically scattered $\alpha$ particles shows the level at 4.841 ± 0.005 MeV in ${}_{}{}^{208}{}_{}{}^{}\mathrm{Pb}$ to possess a large probability for decay to the ground state. The directional correlation of these $\gamma$ rays require that this level have $J^{\pi }=1^{-}$.