Folding model analysis of 10,11B, 12C + 27Al, 39K and 40Ca

Elastic scattering angular distributions for 10,11B + 40Ca at Esub(lab) = 46.6 and 51.5 MeV and 12C + 39K at Esub(lab) = 54 and 63 MeV have been measured and compared with Woods-Saxon and double-folding optical models. The oscillatory structure observed previously for 12C + 40Ca disappears when the projectile is changed to 10,11B or the target is changed to 39K. The angular distributions are adequately reproduced by a double-folding analysis, which employs the nucleon-nucleon potential of Bertsch et a., with a range of real normalizations Nsub(R) = 1.0-1.38. This same range of real normalizations was also able to describe previously measured 10,11B, 12C + 27Al data. The double-folding analysis of 12C + 40Ca scattering indicates that this system behaves differently from neighboring systems. (orig.)