SEARCH FOR EXOTIC DECAY MODES AT THE PROTON DRIP-LINE

In experiments at GANIL and at GSI, we explored the proton drip line t o search for new isotopes and to study the decay modes of nuclei close to the drip line. Detailed studies of the decay of Al-22 and Si-24 yi elded new decay branches for these nuclei, in particular a beta-delaye d alpha emission for Al-22. Studies at GSI revealed the new isotopes C r-42, Fe-45 and Ni-49, Fe-45 being most probably the best candidate fo r the yet unobserved two-proton ground-state emission. Finally at GANI L, the fragmentation of Mo-92 showed clear evidence for the new isotop es Y-77, Zr-79, and Mo-83, Y-77 being a good candidate for proton grou nd-state emission. The measurement of the half-lives of odd-odd N = Z nuclei in this region shows clearly the presence of a super-allowed B- decay branch.