  The experimental elastic cross section data of the projectile 11Be on target
12C at 49.3 MeV/nucleon energy is analysed. The calculations for the elastic
scattering is performed by the phenomenological optical model. The different
optical potentials to include breakup effects into the calculations, which are
neutron+12C, neutron+10Be and 10Be+12C are described with the aid of the global
potentials for neutron interactions and fitted to experimental data for the
core and target interaction. Also, the first analysis of the optical model for
10Be on target 12C at 39.1 MeV is done for building the interaction potential
of the core and the target for 11Be. For investigating the effects of the
spectroscopic factor obtained from the direct capture process using the nuclear
level density are compared with the previous cross section and spectroscopic
factor results. Obtained results for the elastic cross section are reproduced
the experimental data very well, and shows the requirement of including
spectroscopic properties such as the spectroscopic factors and the density of
the excited states to explain this elastic cross section data.
