Experimental investigation on the connection between nucleon transfer channels and near-barrier fusion in 32S+64Ni and 28Si+68Zn systems

Abstract

Abstract One- and two-neutron transfer reactions were studied at bombarding energies near the barrier in 32 S+ 64 Ni and 28 Si+ 68 Zn systems using scattered ion-γ-ray coincidence. Transfer probabilities were obtained in coincidence with selected γ-rays of the product nuclei. The missing probabilities due to transfer leading to the ground state of the product nuclei were estimated using known spectroscopic strengths from the light ion transfer reaction data. The form factors for the neutron transfer channels were obtained from these measurements using a semiclassical theory. The known inelastic couplings, together with the experimentally determined transfer form factors were utilized in a simplified coupled channel calculation to obtain fusion cross sections and the average angular momenta. A comparison of these values with the existing data shows that inclusion of the transfer channels with known coupling strengths is essential to achieve a good agreement with the data.