Elsevier

Nuclear Physics A

Volume 380, Issue 1, 17 May 1982, Pages 125-146
Nuclear Physics A

Band structures in 118, 120Te

https://doi.org/10.1016/0375-9474(82)90586-3Get rights and content

Abstract

The level schemes of 118, 120Te were investigated using Sn(α, 2nγ)Te reactions and employing standard γ-ray spectroscopic techniques. Definite spin and parity assignments could be made for many newly found levels. The excited states can be classified into two categories. Collective quadrupole excitations on the ground states are compared with results of calculations which are performed with the IBA-2 model. High spin proton and neutron quasi particle excitations are interpreted within the framework of the one-broken-pair model. Although it is apparent that configuration mixing is non-negligible at spins Jπ ≧ 6+, excitation energies of many levels are well accounted for either by the IBA-2 calculations or by the quasiparticle calculation. Several states have been excited belonging to bands based upon the quasiparticle states. Branching and mixing ratios of the depopulating γ-rays agree with this interpretation.

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