Elastic, inelastic, and one-neutron transfer angular distributions of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mmultiscripts><mml:mi>Li</mml:mi><mml:mprescripts/><mml:none/><mml:mn>6</mml:mn></mml:mmultiscripts><mml:mo>+</mml:mo><mml:mmultiscripts><mml:mi>Sn</mml:mi><mml:mprescripts/><mml:none/><mml:mn>120</mml:mn></mml:mmultiscripts></mml:mrow></mml:math> at energies near the Coulomb barrier
V. A. B. Zagatto, M. Gómez-Ramos, L. R. Gasques, A. M. Moro, L. C. Chamon, M. A. G. Álvarez, V. Scarduelli, J. P. Fernández-García, J. R. B. Oliveira, A. Lépine‐Szily, A. Arazi
Abstract
The elastic scattering, first ${2}^{+}$ and ${3}^{\ensuremath{-}}$ target inelastic excitation and one neutron pickup angular distributions for the $^{6}\mathrm{Li}+^{120}\mathrm{Sn}$ reaction have been measured for three bombarding energies (19, 24, and 27 MeV). Data have been analyzed through coupled-channel calculations and continuum-discretized coupled-channel calculations extended to include target excitation. In general, both theoretical models give a reasonable description of the data. For the elastic and inelastic angular distributions taken at ${E}_{\mathrm{lab}}=24$ and 27 MeV, the continuum-discretized coupled-channel results are slightly better in comparison to the coupled-channel predictions. For the elastic and inelastic angular distributions measured at ${E}_{\mathrm{lab}}\phantom{\rule{4pt}{0ex}}=19$ MeV, the effect of the break-up channel seems to be quite important. At this energy, the elastic scattering data can be well explained by coupled channel calculations in which a strong absorptive optical imaginary potential is considered. In particular, the continuum-discretized coupled-channel theoretical results provided the best description of the ${3}^{\ensuremath{-}}$ excitation data at 19 MeV.