LEVELS IN PB207 FROM PB208(HE3, ALPHA)PB207 REACTION AT 28-MEV

particles leading to states below 4.4 MeV excitation have been observed in the Pb208(He3, )Pb207 reaction at 28 MeV. Angular distributions have been measured for strong groups leading to the known single-neutron hole states. Distorted-wave Born-approximation calculations show good agreement with the shapes of the measured angular distributions, and yield relative spectroscopic factors close to those predicted by the simple shell model, except for the h92-1 state at 3.43 MeV. Sixteen other weakly excited states are observed above an energy of 2.6 MeV. Most of these are apparently not observed in other reactions leading to Pb207 excited states. © 1969 The American Physical Society.