Systematic study of projectile-structure effect on the fusion-barrier distribution

Pratap Roy, A. Saxena, B. K. Nayak, E. T. Mirgule, B. John, Y. K. Gupta, L. S. Danu, R. P. Vind, Ashok Kumar, R. K. Choudhury
2011 Physical Review C  
Quasielastic excitation function measurement has been carried out for the ^4He + ^232Th system at θ_lab=160^∘ with respect to the beam direction, to obtain a representation of the fusion barrier distribution. Using the present data along with previously measured barrier distribution results on ^12C, ^16O, and ^19F + ^232Th systems a systematic analysis has been carried out to investigate the role of target and/or projectile structures on fusion barrier distribution. It is observed that for
more » ... ^12C, and ^16O + ^232Th, reactions the couplings due to target states only are required in coupled channel fusion calculations to explain the experimental data, whereas for the ^19F+ ^232Th system along with the coupling of target states, inelastic states of ^19F are also required to explain the experimental results on fusion-barrier distribution. The width of the barrier distribution shows interesting transition behavior when plotted with respect to the target-projectile charge product for the above systems.
doi:10.1103/physrevc.84.011602 fatcat:rfj4d4z4fzfgzhwmxfbc3wupwa