Evidence for chiral doublet structure in ¹²²Cs

High-spin states in ¹²²Cs have been studied using ¹⁰⁷Ag(¹⁹F, p3n)¹²²Cs fusion evaporation reaction at beam energy of 93 MeV. A previously known πh_11/2⛒νh_11/2 yrast band was confirmed along with a side band which is based on the same configuration. Properties of the chiral doublet bands of the ¹²²Cs nucleus built on the πh_11/2⛒νh_11/2 configuration are investigated and discussed. The existence of these bands have been discussed in terms excitation energies, B(E2) and B(M1). Linear polarization measurements were performed using the Clover detectors to assign the unknown spins and parities of a few bands. The observed two πh_11/2⛒νh_11/2 bands are proposed to be a pair of chiral doublet bands based on the systematic comparison with those in the neighbouring odd-odd Cs isotopes. (author)