Consistent analysis of proton elastic scattering from 4,6,8 He and 6,7,9,11 Li in the energy range of 25–75 A MeV Original Research Article

While 11 Li is known to be a halo nucleus with two neutrons around a 9 Li core, the neutrons in 6 He are predicted to form a skin around its 4 He core. Both nuclei have very low breakup thresholds. To understand the structure and reaction dynamics of these nuclei, a consistent analysis of the available low energy (25–75 A MeV) proton elastic scattering data on 4,6,8 He and 6,7,9,11 Li nuclei is carried out in a folding model framework. A finite-range, momentum, density and isospin dependent NN interaction (SBM) is folded with realistic densities of different nuclei. To fit the elastic angular distribution, the real part of the folded potentials are multiplied by a renormalization factor ( View the MathML source ). Except for the View the MathML source He scattering at low incident energy, the View the MathML source values are found to be significantly different from 1.0, indicating appreciable channel coupling effects in the energy region considered. Variation of View the MathML source values with incident energies for 6 He and 11 Li is much smaller compared to 8 He and 6 Li.