High-k structures in 124Cs

High spin states in the odd-odd nucleus Cs-124 have been investigated through the fusion-evaporation reaction Sn-116(B-11, 3n)Cs-124 with a beam energy of 45 MeV. A new rotational band is established and assigned as the high-k configuration of pi g(9/2)[404](9/2+)circle times nu h(11/2)[523](7/2-). Some structures linking to this band have also been observed. According to the results of the excitation energy systematics, the lowest level of this band is assigned as 9, and the 8 isomer bandhead has not been observed. Another isomer with a half life of 6.3 s has also been observed with its new decay paths established. Its excitation energy is raised by 79 keV, but its I-pi is not changed.