Impact of Li6 resonances on the near-barrier elastic scattering with Sm144

A. Gómez Camacho, A. Diaz-Torres, P. R. S. Gomes, and J. Lubian
Phys. Rev. C 93, 024604 – Published 2 February 2016

Abstract

Converged continuum discretized coupled-channel calculations of elastic-scattering differential cross sections for reactions induced by the Li6 projectile on the Sm144 target, at energies around the Coulomb barrier, are presented. The impact of the low-lying α-deuteron resonant states in Li6 (l=2,Jπ=3+,2+,1+) on those elastic angular distributions is quantified. This is done by two types of calculations, namely, (a) by omitting from the continuum energy spectrum all states where the resonances are constructed in the discretization process, and (b) by considering only the resonance discretized space. Dynamical polarization potentials are used for interpreting the effect of continuum couplings. Resonant couplings play a more significant role than nonresonance ones at back-scattering angles and at incident energies below the Coulomb barrier. However, their effect becomes weaker as the incident energy increases above the barrier energy.

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  • Received 16 December 2015

DOI:https://doi.org/10.1103/PhysRevC.93.024604

©2016 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

A. Gómez Camacho1, A. Diaz-Torres2, P. R. S. Gomes3, and J. Lubian3

  • 1Departamento de Aceleradores, Instituto Nacional de Investigaciones Nucleares, Apartado Postal 18-1027, Codigo Postal 11801, Distrito Federal, Mexico
  • 2European Centre for Theoretical Studies in Nuclear Physics and Related Areas, Strada delle Tabarelle, 286, I-38123 Villazzano Trento, Italy
  • 3Instituto de Física, Universidade Federal Fluminense, Avenida Litoranea s/n, Gragoatá, CEP 24210-340 Niterói, Rio de Janeiro, Brazil

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Issue

Vol. 93, Iss. 2 — February 2016

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