Lifetimes of ground-band states in Nd150

Members of the ground-state band of Nd150 to spin 8+ have been Coulomb excited with 149-MeV Ar40 ions, and the lifetimes of these states have been measured by the Doppler-shift recoil distance method. The half-lives of the 2+, 4+, 6+, and 8+ states are 1.44±0.07 ns, 63.0±3.2 ps, 12.4±1.1 ps, and 4.0±0.4 ps, respectively. The observed enhancement of the experimental B(E2)'s over rotational values is found to be in agreement with a simple band-mixing description. [NUCLEAR REACTIONS Nd150(Ar40,Ar′40γ), E=149 MeV; measured lifetimes of 2+, 4+, 6+, and 8+ ground-band states, recoil distance method; deduced B (E2) values, compared with theory.]