Quasielastic scattering ofLi11andC

Optical potentials of halo and weakly bound nuclei

“…Elastic nucleus-nucleus scattering with a radioactive projectile [12] is another reaction which has been studied to some extent in the attempt to find characteristics that would be typical for a weakly bound nucleus and would help understanding the halo structure. It has been established that the halo breakup is responsible for a damping in the elastic angular distribution in the range 5 o -20 o about.…”

“…The optical potential is the basic ingredient for the description of elastic scattering, but it is important also in breakup calculations, since we need to take into account the core quasi-elastic scattering by the target while the halo neutron breaks up. Furthermore in some breakup reactions like those initiated from 12 Be or from a core orbital of 11 Be it is the ejectile that most likely is going to have a halo structure [14]. In the charge exchange reaction 11 B( 7 Li, 7 Be) 11 Be the halo nucleus-nucleus optical potential necessary to describe the final channel [13] has a volume part obtained with a double folding plus a very diffuse surface term fitted phenomenologically to reproduce the final channel angular distribution.…”

Four-body adiabatic model applied to elastic scattering

“…The figure also shows the four-body eikonal model calculation [1] and the experimental quasi-elastic cross section data from Kolata et al [8].…”

“…The reasoning behind, and the sensitivity to the choice of wavefunction and potentials is described in [1]. Experimental quasi-elastic scattering data also exists for this system at E LAB =637 MeV [8].…”

“…The calculated elastic cross sections will be compared to quasi-elastic experimental data from ref. [8]. From the structure point of view 11 Li is of interest because it has an extended two-neutron halo, and its three-body structure has been investigated extensively (e.g.…”