Search for the Chiral Band in the N =71 Odd-Odd Nucleus 126Cs

摘要

High-spin states in 126Cs are studied via the 116Cd(14N, 4n) reaction at a beam energy of 65 MeV. The sidebandof the πh11/2 vh11/2 yrast band, a △I=＝ 2 band known from previous study, is developed into a △I= 1 coupled structure at low spins. This sideband is assigned to be built on the same configuration as the yrast band according to the measured ratios of directional correlation of orientation and observed alignment properties. On the basis of comparisons with the previously proposed chiral doublet bands for 128,130Cs, the observed two πh11/2 vh11/2 bands are proposed to be candidates for chiral doublet bands in 126 Cs.