Complete fusion excitation functions for 11,10B+159Tb and 6,7Li+159Tb have been reported at energies around the respective Coulomb barriers. The measurements show significant suppression of complete fusion cross-sections at energies above the barrier for 10B+159Tb and 6,7Li+159Tb reactions, when compared to those for 11B+159Tb. 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 measured incomplete fusion cross-sections show that the 𝛼-particle emanating channel is the favoured incomplete fusion process. Inclusive measurement of the 𝛼-particles produced in 6Li+159Tb reaction has been carried out. Preliminary CDCC calculations carried out to estimate the 𝛼- yield following 6Li breaking up into $\alpha + d$ fail to explain the measured 𝛼-yield. Transfer processes seem to be important contributors.
Volume 94, 2020
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