Abstract
We study p+11Li cross sections, in the intermediate-energy region, with the nucleus characterized by a halo structure. The eikonal approximation and “tϱ” optical potential are used to get an intuitive picture of the reaction mechanism. By using gaussian nucleon densities for 11Li, 9Li and the halo, we obtain similar expressions for the total nuclear reaction and two-neutron removal cross section in the Glauber approximation. Closed-form analytical expressions for those cross sections are derived. By comparing the results with the exact ones, we can conclude that we have derived a fair approximation to them. We also estimate the “in-medium” Pauli-blocking effect on the cross sections.
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