TENSOR EFFECTS IN (LI)OVER-RIGHT-ARROW-6-12 SCATTERING(C)

A complete set of analyzing powers (iT(11), T-20, T-21, and T-22) are reported for the elastic scattering of 50 MeV (6)<(Li)over right arrow > by C-12. They are as large as or larger than those measured earlier for 30 MeV 6<(Li)over right arrow>. A combined optical model analysis of both energies shows T-21 to arise from the tenser interaction, T-20 to involve a combination of tenser and J-dependent interactions, and iT(11) to be the most complicated, arising from an explicit spin-orbit , as well as tenser and J-dependent interactions. A coordinate transfo rmation of the data and calculations, suggested in the earlier work of Hooton and Johnson, provides the dearest evidence for the need of a t enser interaction to describe 6<(Li)over right arrow> scattering. Exam ining the optical model calculations in terms of transferred angular m omentum amplitudes provides further insight into the role played by ea ch interaction. Also presented are the analyzing powers for the He-4(L i-6,He-4) polarimeter reaction at this higher bombarding energy.