Complete spectroscopy of Po 211 below 2.0 MeV via the (α, n) reaction COMPLETE SPECTROSCOPY of Po 211 below 2.0 ... J. R. COTTLE et al.

We report the results of a gamma-ray spectroscopic study of Po-211 via the Pb-208(alpha, n) reaction at 24-MeV incident energy using a thick target. We observe 26 new gamma rays, allowing us to identify 18 states that were not observed in previous. gamma-ray studies. In total, we observe 45 states below 2.0 MeV. A shell model calculation using the modified Kuo-Herling interaction developed by Warburton and Brown predicts 46 states below 2.0 MeV having spins of 21/2 and below, demonstrating the power of this calculation to provide detailed nuclear structure information on nuclei in the vicinity of Pb-208.