Elsevier

Nuclear Physics A

Volume 368, Issue 1, 21 September 1981, Pages 173-188
Nuclear Physics A

Fusion and direct reactions for strongly and weakly bound projectiles

https://doi.org/10.1016/0375-9474(81)90739-9Get rights and content

Abstract

The interaction of 6Li, 9Be and 12C projectiles with a 28Si target was investigated by measuring the angular distributions of the elastically scattered projectiles and of the emitted protons, deuterons and α-particles. The experiment was performed in order to deduce direct and compound nucleus process contributions to the total reaction cross section and to study the influence of the projectile structure on the relative importance of these two mechanisms. Optical model parameters and therefore the total reaction cross section are strongly influenced by the binding energy of the projectile. The parameters of the Glas-Mosel model describing the fusion reaction vary smoothly with the atomic number. In the system 9Be + 28Si around 50% of all reactions are direct processes even at energies near the Coulomb barrier, whereas in the other systems the direct part amounts to 15 % (12C) and 30 % (6Li) only.

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