IN-BEAM STUDY OF THE LEVEL STRUCTURE OF TE-122

Abstract

The level structure of Te-122 has been studied using the Sn-120(alpha,2n) reaction at beam energies of 18 and 24 MeV. Standard in-beam gamma-ray spectroscopy measurements of excitation functions, gamma-gamma-coincidences, and gamma-ray angular distributions were performed. A level scheme up to 3995 keV in excitation was constructed and spin-parity values up to 12+ were assigned to almost all of the states. The identification of several new levels and the first in-beam observation of the excited 0+ state at 1357.4 keV are discussed. The low-lying excitations are examined in the context of coexisting structures of collective, single-particle, and particle-hole intruder excitations.