Vector and tensor analyzing powers (${\mathit{iT}}_{11}$, ${}_{}{}^{\mathit{T}}{}_{}{}^{}$${\mathit{T}}_{20}$, ${\mathit{T}}_{20}$, and ${\mathit{T}}_{22}$) for the ${}_{}{}^9{}_{}{}^{}\mathrm{Be}$${(}^6$Li→${,}^6$Li${)}^9$Be elastic scattering and inelastic scattering leading to the 5/$2^{\mathrm{-}}$ (2.43 MeV) excited state in ${}_{}{}^9{}_{}{}^{}\mathrm{Be}$ are presented for a ${}_{}{}^6{}_{}{}^{}\to$ bombarding energy of 32 MeV over the c.m. angular range 13°–87°. The results of coupled-channels calculations show that the relatively large observed values of the vector analyzing power ${\mathit{iT}}_{11}$ for the inelastic scattering can only be accounted for by an explicit spin-orbit term in the optical potential. For the elastic scattering, the vector analyzing power and the relatively small tensor analyzing powers are described reasonably well by coupled-channels calculations with no explicit spin-orbit or tensor terms in the interaction, and provide a severe constraint on the coupled-channels calculations, with a preference for an optical potential with a double-folded rather than a Woods-Saxon real part.

• Received 27 January 1993

DOI:https://doi.org/10.1103/PhysRevC.48.285