β-delayed emission of protons at the proton drip-line: the cases of [sup 43]Cr and [sup 51]Ni

Studies of beta-delayed emission of protons for Cr-43 and Ni-51 were performed with a Time Projection Chamber. This detection setup allows to reconstruct in the three-dimensional space the tracks of the protons emitted. For the first time, beta-delayed emission of two protons is directly observed for Cr-43 and Ni-51. The question about correlations between protons can be accessed. Finally, we show that Cr-43 can emit up to three delayed protons.