Abstract
We investigate elastic scattering, breakup, and fusion at energies around the Coulomb barrier. The three processes are described simultaneously, with identical conditions of calculations. The nucleus is defined in an three-body model, using the hyperspherical coordinate method. We first analyze spectroscopic properties of and show that the model provides a fairly good description of the low-lying states. The scattering with is then studied with the continuum discretized coupled channel method, where the continuum is approximated by a discrete number of pseudostates. The use of a three-body model for improves previous theoretical works, where is assumed to have a two-body structure ( or ), although neither nor are bound. Optical potentials for the and systems are taken from the literature. We present cross sections at different energies, and we investigate the convergence with respect to the truncation of the continuum. In general, good agreement with experiment is obtained, despite no parameter fitting being made. We show that continuum effects increase at low energies, and we confirm that breakup channels enhance the fusion cross sections below the Coulomb barrier.
6 More- Received 12 December 2014
DOI:https://doi.org/10.1103/PhysRevC.91.024606
©2015 American Physical Society