Abstract: | Feeding intensities and times, as well as lifetimes of yrast levels in doubly even 166, 168, 170Hf nuclei have been measured. The reactions 122, 124Sn(48, 50Ti, 4n)166–17072Hf have been investigated using the recoil-distance Doppler-shift method. The lifetimes, and hence the B(E2) values measured, show the same trends of rather small deviations from the rigid rotor as in the known 68Er and 70Yb cases. In addition to the fast feeding component, showing behaviour rather similar to that of the Yb nuclei, another type of slow feeding, related to the low spin yrast levels, is observed. |