Description of large angle 6Li + 40Ca scattering from 26 to 34 MeV using double-folded and α+d cluster potentials

New elastic scattering data are reported for 6Li + 40Ca at 26 and 30 MeV, and inelastic data at 30 MeV. The measurements at 30 MeV were taken to provide a complete angular distribution at this energy and showed that previously published large angle data at 30 MeV are incorrectly normalized and must be multiplied by 0.65. The new angular distribution at 26 MeV displays enhanced large angle cross sections as has also been previously observed at 30 and 34 MeV. Double-folded or cluster potentials are able to describe the elastic scattering of 6Li + 40Ca over the energy range 26--34 MeV, including the large angle oscillations. No special property is required to explain the large angle behavior other than weak absorption. The double-folding model has also been used to determine deformation lengths for the first 2+, 3-, and 5- states in 40Ca. The values for the 2+ and 3- states agree well with those found from electron, 9Be and 11B inelastic scattering, while the value for the 5- state is a factor of 2 smaller