High-k Structures in (124)～Cs

【摘要】：High spin states in the odd-odd nucleus 124 Cs have been investigated through the fusion-evaporation reaction 116 Sn(11 B,3n) 124 Cs with a beam energy of 45 MeV.A new rotational band is established and assigned as the high-k configuration of πg 9/2 [404]9/2 +νh 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 π is not changed.