beta-delayed proton decay of Pd-93

The beta-'waiting point' nucleus (93) Pd has been produced via (58) Ni((40) Ca, 3n2p) reaction. A helium-jet fast tape transport system was used in combination with p-gamma coincidence measurement to identify the P-delayed proton precursor (93) Pd, whose half-life has been measured to be 1.3 +/- 0.2s. The measured energy spectrum of beta-delayed protons and relative branching ratios to the final states in the daughter nucleus (92) Ru are fitted by a revised statistic model calculation, and then the ground-state spin of (93) Pd are assigned to be 9/2. Meanwhile, a nuclear energy-potential-surface (EPS) calculation is performed by using the Woods-Saxon Strutinsky method. The calculated result supports the ground-state spin and parity of 9/2(+) assignment.