DIPOLE EXCITATIONS IN TE-122, TE-126 AND TE-130

Excited states of the nuclei Te-122, Te-126 and Te-130 were populated via the (gamma, gamma') reaction at endpoint energies of the bremsstra hlung between 4.5 and 5.5 MeV. Gamma rays were detected with a EUROBAL L-CLUSTER detector and a single detector. In all nuclei several dipole transitions were identified at energies around 3 MeV. The lowest corr esponding J = 1 states are interpreted as two-phonon excitations. Quas iparticle-phonon-model calculations predict one 1(-) state arising fro m the coupling of the first quadrupole and the first octupole phonon a nd one 1(+) state arising from the coupling of the first: and the isov ector second quadrupole phonon at about 3 MeV. The calculated transiti on strengths are compatible with experimental ones.