Elastic and Inelastic Scattering Measurements for the Mg-24 Plus Pb-208 and Si-28 Plus Pb-208 Systems

摘要

The differential cross sections for the elastic and inelastic scattering to the lowest 2(+) states of Mg-24 and Si-28 using Mg-24 and Si-28 beams in conjunction with Pb-208 targets were measured and analyzed. The incident beam energies were 145 MeV for Mg-24 and 162 MeV for Si-28. The measured cross sections were analyzed using coupled channels calculations assuming a rotational model description for the low-lying collective states of Mg-24 and Si-28. The coupled channels calculations are compared with polarization potential calculations in which the experimental B(E2) values are used in both cases. The extracted deformation lengths and deformation parameters are compared to those obtained using similar data with light projectiles, although because of strong Coulomb excitation the present calculations are fairly insensitive to the nuclear deformation parameters.