Exploring the structure of Xe isotopes in A similar to 130 region: Single particle and collective excitations

High and medium spin structures of Xe-130,Xe-131 have been studied using alpha-induced fusion-evaporation reaction and the Indian National Gamma Array (INGA) coupled with a digital data acquisition system. Various new band structures and near yrast levels of Xe-131 have been established. The multipolarities of the observed transitions have been assigned on the basis of the DCO ratios and the polarization asymmetry measurements. Band structures based on 1-quasi-particle (qp), 3-qp configurations have been observed. A new Magnetic Rotational (MR) band based on 5-qp configuration has also been established in Xe-131. The MR band has been interpreted in terms of shears mechanism with principal axis cranking (SPAC) calculations. Shell Model calculations are carried out to describe the non yrast states of Xe-131 above the 11/2(-) isomer. New excited states have also been identified in Xe-130, produced in the same reaction.