Isoscalar spin excitation in Zr-90 and Pb-208

Isoscalar spin-transfer excitations have been measured in Zr-90 and Pb-208 by inelastic scattering of vector and tensor polarized 400 MeV deuterons in an excitation energy range from 2.5 to 43 MeV and 2.3 to 23 MeV, respectiv ely. For Zr-90, spin excitations were found between 7.5 and 10.7 MeV and in a large structure in the continuum (18 to 28 MeV). For (208)pb, spin excit ations were found at 3.55 and 5.85 MeV, between 6.5 and 11 MeV, and spread over the continuum. Elastic scattering cross sections and vector and tensor analyzing powers were measured between 3.4 and 24 degrees for Zr and Pb, a nd optical potential parameters were derived. The experimental results are compared to DWIA/RPA calculations. The transition densities used are genera ted using the continuum random phase approximation. [S0556-2813(99)06301-3] .