Exchange of Alpha Particle in the [sup 16]O+[sup 12]C Elastic Scattering

Abstract

We have analyzed twenty elastic scattering angular distributions of the 16O+12C system, measured at Sao Paulo Pelletron Laboratory [1] and also data from the literature[2]. The energies cover the region around and above Coulomb barrier, ranging from 8.54 up to 75.43 MeV in the center of mass reference frame. In the 16O+12C scattering, two different processes can occur which result in same exit channel, the elastic scattering and the exchange of an alpha particle between projectile and target. We have used the Optical Model formalism for the elastic scattering and the DWBA to describe the alpha transfer reaction contribution. Thus, by analyzing the 16O+C elastic scattering at backward angles we have obtained the 16Ogs alpha spectroscopic factor.