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

Barrier distributions for the (28)si+Nd-142,Nd-150 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, Nd-142 and Nd-150 U having spherical and deformed shapes at the ground state, respectively.