The quasi-elastic excitation function for the {sup 17}O + {sup 64}Zn system was measured at energies near and below the Coulomb barrier, at the backward angle {theta}{sub lab}=161 deg. The ...corresponding quasi-elastic barrier distribution was derived. The excitation function for the neutron stripping reactions was also measured, at the same angle and energies, and the experimental values of the spectroscopic factors were deduced by fitting the data. A reasonably good agreement was obtained between the experimental quasi-elastic barrier distribution with the coupled-channel calculations including a very large number of channels. Of the channels investigated, three dominated the coupling matrix: two inelastic channels, {sup 64}Zn(2{sub 1}{sup +}) and {sup 17}O(1/2{sup +}), and one-neutron transfer channel, particularly the first one. On the other hand, a very good agreement is obtained when we use a nuclear diffuseness for the {sup 17}O nucleus larger than the one for {sup 16}O. We verify that quasi-elastic barrier distribution is a sensitive tool for determining nuclear matter diffuseness.
Angular distributions for the elastic scattering of {sup 8}B, {sup 7}Be, and {sup 6}Li on a {sup 12}C target have been measured at E{sub lab}=25.8, 18.8, and 12.3 MeV, respectively. The analyses of ...these angular distributions have been performed in terms of the optical model using Woods-Saxon and double-folding type potentials. The effect of breakup in the elastic scattering of {sup 8}B+{sup 12}C is investigated by performing coupled-channels calculations with the continuum discretized coupled-channel method and cluster-model folding potentials. Total reaction cross sections were deduced from the elastic-scattering analysis and compared with published data on elastic scattering of other weakly and tightly bound projectiles on {sup 12}C, as a function of energy. With the exception of {sup 4}He and {sup 16}O, the data can be described using a universal function for the reduced cross sections.
Elastic scattering angular distributions for {sup 7}Be, {sup 9}Be, and {sup 10}Be isotopes on {sup 12}C target were measured at laboratory energies of 18.8, 26.0, and 23.2 MeV, respectively. The ...analysis was performed in terms of optical model potentials using Woods-Saxon and double-folding form factors. Also, continuum discretized coupled-channels calculations were performed for {sup 7}Be and {sup 9}Be + {sup 12}C systems to infer the role of breakup in the elastic scattering. For the {sup 10}Be + {sup 12}C system, bound states coupled-channels calculations were considered. Moreover, total reaction cross sections were deduced from the elastic scattering analysis and compared with published data on other weakly and tightly bound projectiles elastically scattered on the {sup 12}C target, as a function of energy.
The collision {sup 6}He+{sup 120}Sn has been investigated at four energies near the Coulomb barrier. A large yield of {alpha} particles has been detected, with energies around the energy of the ...scattered {sup 6}He beam. The energy and angular distributions of the {alpha} particles have been analyzed and compared with breakup and neutron transfer calculations.
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