Analysis of elastic scattering and breakup of [sup.11]Li in collisions with protons using a dynamical two-cluster model

The [sup.Li] scattering and breakup on protons is considered under the assumption that the [sup.Li] nucleus consists of two interacting clusters, which are a c = [sup.9]Li core and a h = 2n dineutron halo. The single-particle density of the [sup.Li] nucleus, a microscopic optical potential, and the cross section for [sup.11]Li + p scattering for various choices of cluster shape are obtained and analyzed by folding the density distribution for either cluster with the probability density for the relative motion of two clusters. A comparison with experimental data of the scattering cross section at low, 60-75 MeV, and intermediate, 700 MeV, energies is performed. The momentum distribution of c fragments upon [sup.[sup.11]Li breakup is calculated and studied with a help of the obtained p + c and p + h microscopic optical potentials.