Reactions induced by 30 MeV 3He beam on 9Be: Cluster transfer reactions

Abstract

An experiment has been carried out for studying the cluster structure of ${}^9$Be induced by the ${}^3$He ions at the energy of 30 MeV. As results of the nuclear reaction ${}^3$He + ${}^9$Be the differential cross sections for the exit channels - elastic, inelastic, $\alpha$ + ${}^8$Be, ${}^6$He + ${}^6$Be, ${}^6$Li + ${}^6$Li, and ${}^7$Be + ${}^5$He - were measured. Elastic and inelastic scattering data are treated within both the optical model and Coupled channels method. A new set of optical potential was taken for the elastic scattering. The deformation parameter ${\delta }_2$ was established for the transition $3/2\to 5/2$. Cluster transfer reactions are analyzed by means of the coupled reaction channels method. The nuclear reactions with the exit channels ${}^6$He + ${}^6$Be, ${}^6$Li + ${}^6$Li, and ${}^7$Be + ${}^5$He are complemented by two-step transfer mechanisms. The contribution of each reaction mechanisms are shown, and compared with the findings of other authors.

Comments: 13 pages, 11 figures,1 table