Three-phonon multiplets in 116Sn.

Low-lying states in the even-even 116Sn nucleus have been studied by populating them using the 114Cd(α , 2n)116Sn reaction at the beam energy of 34 MeV. γγ coincidences, directional correlation ratio, and polarization asymmetry measurements were performed using the Indian National Gamma Array (INGA) with a digital data acquisition system. Three-phonon multiplets in the 116Sn nucleus have been investigated. The experimental energy levels are analyzed using theoretical approaches of the interacting boson model (IBM) in the U(5) limit and large-scale shell-model calculations using two different model spaces. [ABSTRACT FROM AUTHOR]