Elastic scattering and total reaction cross section for the 6He+27Al system

The elastic scattering of the radioactive halo nucleus He-6 on Al-27 target was measured at four energies close to the Coulomb barrier using the RIBRAS (Radioactive Ion Beams in Brazil) facility. The Sao Paulo Potential (SPP) was used and its diffuseness and imaginary strength were adjusted to fit the elastic scattering angular distributions. Reaction cross-sections were extracted from the optical model fits. The reduced reaction cross-sections of He-6 on Al-27 are similar to those for stable, weakly bound projectiles as Li-6,Li-7, Be-9 and larger than stable, tightly bound projectile as O-16 on Al-27. (c) 2007 Elsevier B.V. All rights reserved.