Electromagnetic Transitions in 130Ce

Abstract
States in 130Ce have been studied using 16O induced reactions on 117Sn and 118Sn targets. Mean lifetimes have been measured for the yrast states up to Jπ = 22+ using both the Doppler shift attenuation and recoil distance methods. Magnetic dipole transition rates have been deduced from branching ratio measurements within a band based on an isomeric state at 2454 keV. Electric quadrupole transition rates have been determined from mean lifetime measurements for states in the yrast band up to Jπ = 22+. Both sets of results show an unexpected behaviour.