Excited levels of 128 Te to 3.3 in MeV excitation have been studied using γ-ray spectroscopy following inelastic scattering of accelerator-produced neutrons. Spectroscopic information, including transition energies, level spins, E2/M1 multipole-mixing ratios, and γ-ray branching ratios, was determined from γ-ray excitation functions measured from E n = 2.15 to 3.33 MeV in 90 keV increments, γ-ray angular distributions measured at E n = 2.2, 2.8, and 3.3 MeV, and γγ coincidences measured at E n = 3.6 MeV. Lifetimes of levels in 128 Te were deduced using Doppler-shift attenuation techniques. Absolute transition probabilities were determined for many levels and compared to interacting boson model and particle-core coupling model calculations to identify few particle and collective structures; states exhibiting the decay characteristics expected for two-phonon, mixed-symmetry, and quadrupole-octupole coupled states are identified.
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