Level structure of light even xenon nuclei populated in the decays of isomeric and ground states of 118,120,122Cs

Abstract

Gamma and conversion electron lines following the β-decay of 118,120,122 Cs nuclei have been investigated at the ISOLDE facility. Evidence has been found for two isomeric states with similar half-lives in 118,120 Cs. Level schemes of 118,120,122 Xe including levels of the quasiground state, gamma and beta bands have been established. The structure of these nucle is discussed in the framework of the rotational model and the vibrational limit of the interacting boson approximation (IBA) approach.