Stock, Reinhard (Prof. Dr. Dr. h.c.), Jahnke, U., Hendrie, D. L., Mahoney, J., Maguire, C. F., Schneider, W. F. W., Scott, D. K., Wolschin, G., Stock, Reinhard (Prof. Dr. Dr. h.c.), Jahnke, U., Hendrie, D. L., Mahoney, J., Maguire, C. F., Schneider, W. F. W., Scott, D. K., and Wolschin, G.
Angular distributions for elastic and inelastic transitions in 20Ne + 16O scattering have been measured at E(20Ne)=50 MeV. For the 0+, 2+, and 4+ members of the 20Ne ground-state rotational band, the angular distributions exhibit pronounced backward peaking characteristic of an alpha -cluster exchange mechanism. The analysis of the ground-state transition in the first-order elastic transfer model yields no satisfactory fit although microscopic cluster form factors and full recoil corrections are employed. A coupled channels calculation for the 0+, 2+, and 4+ transitions reveals very strong coupling effects, indicating that the coherent superposition of first-order optical model and distorted-wave Born-approximation amplitudes may not be an adequate model for these reactions. NUCLEAR REACTIONS 16O(20Ne, 16O) and 16O(20Ne, 20Ne), elastic and inelastic transfer; E=50MeV; measured sigma (Ef , theta ); optical model + DWBA, and CCBA analyses.