Evolution of collectivity in 180Hg and 182Hg

Lifetimes of yrast states in Hg-180 up to the 8(+) state and of the 9(-) state have been extracted from recoil-decay tagged gamma-ray spectra by using the recoil distance Doppler-shift method. In addition, lifetimes of yrast states up to the 10(+) state in Hg-182 have been extracted from recoil-gated gamma gamma-coincidence spectra. The present study addresses the evolution of collectivity of two competing shapes in neutron-deficient Hg nuclei as a function of A and the configuration mixing at low spin.