Competing Decay-out Mechanisms of the Yrast Superdeformed Band in 59Cu

This contribution reports on the decay-out of the yrast superdeformed band in 59 Cu. It decays by multiple γ-ray transitions into low-spin spherical states in the first minimum of the nuclear potential in 59 Cu, and, in competition, by emitting two prompt protons into a spherical state in 58 Ni. For the first time in A ~ 60, the role of doorway states in the course of the decay-out is discussed