Collectivity at high spins in 156Dy -: art. no. 034328

Mean lifetimes of five levels in the S band and three levels in the ground-state band of Dy-156, populated via the Sn-124(S-36,4n) reaction at E=145 MeV, were measured by the Doppler-shift attenuation technique using a line-shape analysis. The differential decay-curve method was applied for a lifetime determination. In contrast with earlier data, the present B(E2) values in the yrast band do not indicate a reduction in the collectivity after the crossing between the S band and the ground-state band, and confirm the results of theoretical calculations using mean-field approaches.