We briefly reviewed the experimental study onβ-delayed proton decays near the proton drip line published by our group during the period of 1996-2004, namely the first observation of theβ-delayed proton decays of 9 new nuclides in the rare-earth region (Fig.1)and the new measurements ofβ-delayed proton decays of 5 nuclides in the mass≈90 region near the N = Z line (Fig. 2) with the aid of the 'p-γ'
The experiment was carried out at the Sector-Focusing Cyclotron in IMP. 133Sm was produced via fusion, evaporation in the reaction 40Ca(96Ru,2pn).Itsβ-delayed proton decay was studied by means of 'p-γ' coincidence in combination with a He-jet tape transport system, including half-lives, proton energy spectra (Fig. 1),γ-transitions following the proton emissions, and the branching ratios to the low-lying states in the grand-daughter nuclei. The possible spins and parities of 133Sm were extracted by fitting the experi-
