In-beam gamma-ray spectroscopy of low- and medium-spin levels in 211Po

The structure of the low- and medium-spin levels of the Po nucleus have been studied with in-beamγ -ray spectroscopy with the 208Pb(α,n)211Po fusion-evaporation reaction. The level scheme was furtherextended with levels of the configurations π (h9/2)^2_2+−4+ ⊗ νg9/2 , π (h9/2)^2_8+ ⊗ νg9/2, π (h9/2 )^2_2+−4+ ⊗ νi11/2, π (h9/2)^2_2+ −4+ ⊗ νj15/2, π(h9/2 f7/2 )_8+ ⊗ νg9/2, and π (h9/2)^2_0+ ⊗ ν(g9/2 )^2_0+ (s1/2)^−1. The single-particle neutron states νd5/2 and νs1/2 were also identified. Furthermore, a number of states feeding the low-spin structures were added.