The cross sections for proton scattering to the ground state and the low-lying collective states of even stable samarium isotopes were measured at an incident energy of 25.6 MeV. The results are analysed in terms of the strong coupling approximation assuming the 144, 148, 150Sm and 152, 154Sm nuclei to be harmonic vibrators and symmetric rotators, respectively. A description of elastic and inelastic scattering is given in the framework of the coupled-channels theory and the collective model. A systematic study was carried out to deduce the 2λ (λ = 2, 3, 4, 6) pole deformation parameters and a single common optical potential for this nuclear range. A comparison with the phenomenological optical model potentials for the 144Sm nucleus arising from coupled-channels analyses and parameter-free local equivalent fully microscopic optical model potentials calculated in a nuclear matter approach is presented.
- Nuclear reactions
ASJC Scopus subject areas
- Nuclear and High Energy Physics