Measurements of reduced E2 transition probabilities in the nuclei 102Ru, 103Rh, 106,108Pd and 107,109Ag

Abstract

Accurate lifetime measurements have been carried out on the first levels in the nuclei 102Ru, 106,108pd, and first 5 2 and 9 2 in 103Rh, 107,109Ag, by the recoil-distance method. Deduced ratios between reduced E2 transition probabilities B( E2) in the same or neighbouring nuclei have been compared to the predictions of collective “geometrical” and boson “algebraical” models. A reduction of collectivity between neighbouring even-even and odd- A nuclei is clearly established.