Analysis of fusion excitation functions of ¹¹Be+²⁰⁹Bi and ¹⁵C+²³²Th reaction through quantum diffusion approach

Abstract

We have studied the fusion of 11 Be with 209 Bi and 15 C with 232 Th in the energy region around the barrier within the framework of quantum diffusion approach and have found enhancement in fusion cross-section in deep sub-barrier region and a very minor suppression in the above barrier energy region with respect to the corresponding experimental observations. The fusion cross-section is found to be slightly increased for reactions involving 11 Be and 15 C nuclei in comparison to those involving the stable 10 Be and 12 C isotopes, respectively.

Study of fusion of8B +58Ni System in near Barrier Energy Region

“…Further because of very low binding energy the probability of breakup of a halo nucleus into its constituent fragments increases substantially and the dynamical effects arising due to coupling to breakup channel are quite important. Recent studies on fusion of neutron halo nuclei have show that there is a suppression of fusion cross section at energies above the barrier and enhancement at energies below the barrier, which indicates that static effect dominate over dynamical effects at energies below the barrier and vice-versa [8][9][10][11]. However, the proton halo structure due to the presence of Coulomb interaction between the valance proton and the remaining core is more complex than its neutron counterpart.…”