Influence of projectile α-breakup threshold on complete fusion

A. Mukherjee, Subinit Roy, M. K. Pradhan, M. Saha Sarkar, P. Basu, B. Dasmahapatra, Titir Bhattacharya, S. Bhattacharya, S. K. Basu, A. Chatterjee,

Physics Letters B · 2006 · 97 citations · 19 references

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Abstract

Complete fusion excitation functions for B11,10+Tb159 have been measured at energies around the respective Coulomb barriers, and the existing complete fusion measurements for Li7+Tb159 have been extended to higher energies. The measurements show significant reduction of complete fusion cross sections at above-barrier energies for both the reactions, B10+Tb159 and Li7+Tb159, when compared to those for B11+Tb159. The comparison shows that the extent of suppression of complete fusion cross sections is correlated with the α-separation energies of the projectiles. Also, the two reactions, B10+Tb159 and Li7+Tb159 were found to produce incomplete fusion products at energies near the respective Coulomb barriers, with the α-particle emitting channel being the favoured incomplete fusion process in both the cases.

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