An investigation of proton-rich nuclei and other products from the bombardment of 24Mg, 28Si AND 32S by 16O ions

The β- and γ-ray spectra have been studied resulting from the bombardment of ²⁴Mg, ²⁸Si and ³²S with continuous and chopped beams of ¹⁶O ions in the energy-range of 22-33 MeV. Compound-nucleus formation is found to predominate in the reactions. Protonrich nuclei are observed via the ( ¹⁶O, 2n) reaction in each case. In particular the mass excess of the previously unobserved nucleus ⁴⁶Cr is found to be -29.46 ± 0.03 MeV; its half-life is 0.26 ±0.06 s. The systematics of the Coulomb displacement energies of the mass triplets up to A = 46 are discussed.