Elastic Scattering and Reaction Cross Section of the 6He+27Al System Close to the Coulomb Barrier

A.LÉPINE-SZILY,; E.A.BENJAMIM; R.LICHTENTHÄLER; V.GUIMARÃES; P.R.S.GOMES; L.C.CHAMON; M.S.HUSSEIN; A.ARAZI; I.PADRON; J. ALCANTARA NUÑEZ; M.ASSUNÇÃO; A.BARIONI,; O.CAMARGOJR.; R.Z.DENKE; P.N. DEFARIA; D.R.MENDESJUNIOR; K.C.C. PIRES

Venecia, Italia

Conferencia; FUSION06: Reaction Mechanisms and Nuclear Structure at the Coulomb Barrier; 2006

The RIBRAS (Radioactive Ion Beams Brazil) facility recently installed at the Pelletron Laboratory of the University of São Paulo consists of two superconducting solenoids used to produce and focalize beams of light radioactive nuclei, as 6He, 7Be,8Li etc. The low energy, light, radioactive beams available are used to study reactions close to the Coulomb barrier. The elastic scattering of the radioactive halo nucleus 6He on 27Al target was measured at four energies close to the Coulomb barrier. Reaction cross sections were extracted from the optical model fits, using the São Paulo Potential (SPP). The reduced reaction cross sections of 6He on 27Al were compared to reduced reaction cross sections for other projectiles as 6,7Li, 9Be and 16O on 27Al and they are larger than those for stable projectiles by an amount similar to the calculated nuclear break-up cross section for this system