New experimental results in proton radioactivity

A review of experimental data obtained recently on proton-radioactive nuclei is presented. The highlights include the observation of fine structure in proton emission, for the decays of Eu-131, Tm-145 and Tm-146, and the studies of the excited states in proton-emitting nuclei. The observation limits are extended to few nanobarns cross-sections (Ho-140, Ir-164 and Eu-130) and few microsecond half-lives (e.g., Tm-145). Measured decay properties for thirty-nine proton-emitting ground and isomeric states contributed to the understanding of nuclear masses and evolution of single-particle states at and beyond the proton drip line. Experimental results have stimulated new theoretical approaches to proton emission and the structure of unbound narrow resonance states.