Collective and noncollective states in 117Te Original Research Article

High-spin states of the 117Te nucleus were studied by in-beam γ-ray spectroscopy with the View the MathML source fusion-evaporation reaction at a beam energy of 85 MeV. γ-γ coincidence and γ-γ angular correlation analyses were employed for determining the level scheme of 117Te. The previously known states based on the View the MathML source orbital have been widely extended and some states have been corrected. Based on the TRS calculations, many unusually low-lying states in their excitation energies have been assigned to noncollective oblate states built on various quasiparticle configurations with β2 ≈ 0.17 and γ = 60°. Meanwhile, in the positive-parity states built on the View the MathML source and the View the MathML source configurations, the vibrational- and the rotational structures have been found to coexist.