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Microscopic study of 6He elastic scattering around the Coulomb barrier

par Descouvemont, Pierre
Référence AIP Conference Proceedings, 1753, 030004
Publication Publié, 2016-07

Article révisé par les pairs

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Résumé :

We investigate 6He scattering on 27Al, 58Ni, 120Sn, and 208Pb in a microscopic version of the Continuum Discretized Coupled Channel (CDCC) method. We essentially focus on energies around the Coulomb barrier. The 6He nucleus is described by an antisymmetric 6-nucleon wave function, defined in the Resonating Group Method. The 6He continuum is simulated by square-integrable positive-energy states. The model does not depend on any adjustable parameter as it is based only on well known nucleon-target potentials. We show that experimental elastic cross sections are fairly well reproduced. The calculation suggests that breakup effects increase for high target masses. For a light system such as 6He+27Al, breakup effects are small, and a single-channel approximation provides fair results.