Elsevier

Nuclear Physics A

Volume 435, Issue 1, 4 March 1985, Pages 301-316
Nuclear Physics A

Limitation to complete fusion in the reactions 12,13C+48Ti and 30Si+30Si

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Abstract

Excitation functions of the reactions 12, 13C+48Ti and 30Si+30Si were measured by in-beam γ-ray spectrometry in the energy ranges 20–60 MeV for the 12, 13C induced reactions and 55–126 MeV for the 30Si+30Si reaction. Light-particle angular distributions were measured at 46 MeV and 47.5 MeV for the 13C and 12C induced reactions. Measurements of elastic scattering angular distribution and particle-γ coincidences were carried out for the system 13C+48Ti at 46 MeV. The limitation to complete fusion detected for the system 30Si+30Si appears to be related to entrance channel effects and is well reproduced by a barrier penetration calculation using the KNS potential. The angular distribution measurements carried out for the 12C+48Ti and 13C+48Ti systems allowed to identify an incomplete fusion mechanism with emission of direct α-particles before the formation of a fully equilibrated system.

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