Fragmentation of the octupole strength in 205Tl(p,p′)205Tl

In addition to the octupole transitions to the apparent weak-coupling doublet [3 s 1 2 −1 , 206 Pb 3 − ] at 2.62–2.71 MeV, three other strong octupole transitions to nearby states are observed in the inelastic scattering of 20 MeV protons from 205 Tl. Two of these extra states, at 3.21 and 3.26 MeV, may arise from the [2 d 3 2 −1 , 206 Pb 3 − ] configuration. It is not likely that the other transition (2.48 MeV) can be described by the simple weak-coupling model.