Quasielastic scattering measurements in the 28 Si+ Nd ,150 142 systems

Barrier distributions for the $^{28}\mathrm{Si}+^{142,150}\mathrm{Nd}$ systems were extracted from large-angle quasielastic scattering measurements. The measurements were carried out over a wide range of incident beam energies around the Coulomb barriers. The experimental results were compared with the predictions from coupled-channels calculations carried out using different coupling schemes. Reasonable agreement between the experimental and theoretical results was obtained. The role of coupling effects of the various excitation modes of the projectile and target on the observed barrier distributions is discussed. The sensitivity of the quasielastic scattering process on the mode of projectile excitation is clearly been seen from the use of two different types of targets, $^{142}\mathrm{Nd}$ and $^{150}\mathrm{Nd}$, having spherical and deformed shapes at the ground state, respectively.