Observation of low-lying and linking transitions in Cs-124

The level states of the nucleus Cs-124 have been populated through the Sn-1 16(B-11,3n) reaction at a beam energy of 45MeV, provided by the HI-13 tande m accelerator of the China Institute of Atomic Energy. A number of low-lyin g states are constructed. The level states in the pih(11/2) x vg(7/2) side band are extended down to lower spin by one h. The level energies and spins in the rotational bands are determined through the establishment of variou s connections, which confirm the spin assignment of the yrast band in 124Cs based on excitation energy systematics. It is revealed that with the prese nt spin assignment, the pih(11/2) x vg(7/2) Side band shows signature inver sion at low-spin region and the inversion occurs at a spin of about 16h.