Elsevier

Nuclear Physics A

Volume 463, Issues 3–4, 23 February 1987, Pages 710-730
Nuclear Physics A

Multistep effects in reactions of 17O with 208Pb near the coulomb barrier

https://doi.org/10.1016/0375-9474(87)90639-7Get rights and content

Abstract

The elastic scattering, inelastic scattering and single-neutron transfer cross sections in the collision of 78 MeV 17O on 208Pb are measured. It is shown that these cross sections can be understood in terms of a three-body model of the system comprising a 16O core, a valence neutron and a 208Pb target. The theoretical analysis points to the importance of multistep effects in all reaction processes. The inherent energy dependence of the 16O208Pb elastic optical potential at energies close to the Coulomb barrier is also seen in 17O208Pb elastic scattering. The effect of the valence-neutron channel coupling on the 17O208Pb interaction potential is deduced, and is shown to be almost entirely imaginary. Implications for a possible isotope dependence of the sub-barrier fusion cross section are considered.

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