Cluster structure of 16O
Department of Physics, University of Rajshahi, Rajshahi, Bangladesh
2 Department of Physics, Shahjalal University of Science & Technology, Sylhet, Bangladesh
3 Department of Physics, University of Dhaka, Dhaka, Bangladesh
4 Department of Physics, Southern Illinois University, 62901, Carbondale, Illinois, USA
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A folding potential describing the $\alpha$-scattering on 16O over a broad energy range 25.8-146.0 MeV is constructed on the basis of $\alpha$-like cluster and unclustered-nucleon configurations of 16O. The resulting potential does not need any renormalization to fit the angular distribution of elastic cross-sections. The effects of the repulsive part of $\alpha$-$\alpha$ and $\alpha$-nucleon interactions are investigated. The analysis suggests that both the $\alpha$-$\alpha$ repulsive potential and the unclustered nucleonic configuration in the target are important to describe the scattering data over a broad range of incident energies. The root-mean-square radius for the 16O nucleus is deduced.
© Società Italiana di Fisica and Springer-Verlag, 2003