This report will cover four topics: 1) The development of catcher techniques to detect shortlived particle radioactivities. With this setup proton emission from113Csand109Ihas been observed for the first time (1983). Their slow decay rate has been realized and for the first time expressed in terms of a spectroscopic factor. 2) A discussion of various types of recoil separation schemes and experiments using an electrostatic deflector, which yielded improved decay data for113Csand109I.3) The production of proton rich nuclei by fragmentation of relativistic124Xeand112Snions at GSI and the determination of their decay properties. The beta-decay halflives of105Sband77Yas well as of many other nuclei along the path of rp-process nucleosynthesis have been measured. InTz=−1/2nuclei proton decay has to compete with superallowed Fermi-decay, which is also observed for theTz=0odd-odd nuclei between78Yand94Ag.4) A possible solution to the problem how to detect the proton decay of39Sc(Sp=−0.602&hthinsp;MeV,T1/2∼0.3&hthinsp;ps) and to measure its half-life. ©2000 American Institute of Physics.