Proton excitation of vibrational states of 126Te

The differential cross-sections for the elastic and inelastic scattering of 12 MeV protons by 126Te have been measured. The results are interpreted in terms of the collective model using both the distorted-wave and coupled-channel methods. The quadrupole and octupole vibrational states are identified at 0.67 and 2.395 MeV, respectively. Levels at 1.36 and 1.42 MeV are interpreted as due to two-quadrupole phonons. Scattering to some of the group of states just above 2 MeV is in agreement with the predictions for the excitation of three quadrupole phonons.