Non-local effects on the heavy-ion fusion at sub-barrier energies

Details Non-local effects on the heavy-ion fusion at sub-barrier energies Non-local effects on the heavy-ion fusion at sub-barrier energies

2007-05-05

arxiv.org/abs/0705.0771v1

Braz.J.Phys.37:1177-1180,2007

Physics

Nuclear Physics

Nuclear Theory

4 pages, 2 figures

Scientific paper

10.1590/S0103-97332007000700018

We investigate the effect of Pauli non-locality in the heavy-ion optical potential on sub-barrier fusion reactions. The S\~{a}o Paulo potential, which takes into account the Pauli non-locality and has been widely used in analyzing elastic scattering, has also recently been applied to heavy-ion fusion. However, the approximation employed in deriving the S\~{a}o Paulo potential, based on the Perey-Buck semi-classical treatment of neutron induced reactions, must be assessed for charged particles tunneling through a barrier. It is the purpose of this note to look into this question. We consider the widely studied system $^{16}$O + $^{208}$Pb at energies that span the barrier region from 10 MeV below to 10 MeV above. It seems that the non-locality plays a minor role. We find the S\~{a}o Paulo potential to be quite adequate throughout the region.

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