Coupled-channels study of polarized 6Li scattering at 44 MeV

Abstract

Previously published coupled-channels (CC) analyses by Rusek et al. of polarized 6Li elastic scattering by 26Mg and 120Sn at Elab=44 MeV are analyzed. Excitations of 6Li to its three lowest T = 0 excited states are taken into account in the framework of continuum-discretized coupled-channels (CDCC). The analyses are made with the use of the projectile-target interactions based on the cluster-folding (CF) model and those on the double-folding (DF) one. It is shown that the coupling to the 6Li-excited states has large contributions to the vector and tensor analyzing powers of the elastic scattering. A test of the accuracy of the weak-binding-energy approximation (WBEA), which was used in the previous analyses, is made in comparison with the results of the CDCC calculation. It is also pointed out that there exists an ambiguity in the deuteron-target spin-orbit interaction, which affects the conclusion on the competition between the folding spin-orbit interaction and the projectile-excitation effects in the vector analyzing power.