Elastic scattering and heavy residue production in the collisions Li+Zn around the Coulomb barrier

The study of nuclear collisions involving halo or, more in general, weakly bound nuclei at energies around the Coulomb barrier had a considerable interest in the last decade, since the peculiar structure of the colliding nuclei can deeply affect the reaction mechanisms (see e.g. [1–3] and refs. therein). We measured elastic scattering angular distributions and heavy residue production cross sections at several energies around the Coulomb barrier in the collisions Li+Zn. Elastic scattering angular distributions have been reproduced within the Optical Model using renormalized double folding potentials for the real and imaginary part. The extracted energy dependence of the renormalization factors clearly show absence of the usual threshold anomaly in the optical potential, as already observed in other systems involving weakly bound nuclei.