Fusion reaction of a weakly bound nucleus with a deformed target

We discuss the role of deformation of the target nucleus in the fusion reaction of the C-15+Th-232 system at energies around the Coulomb barrier, in which C-15 is a well-known one-neutron halo nucleus. To this end, we construct the potential between C-15 and Th-232 with the double folding procedure, assuming that the projectile nucleus is composed of the core nucleus, C-14, and a valence neutron. In addition, we also take into account the coupling to the one-neutron transfer process to the C-14+Th-233 configuration. We show that such calculation simultaneously reproduces the fusion cross sections for the C-14+Th-232 and the C-15+Th-232 systems, implying an important role of the transfer coupling in fusion of neutron-rich nuclei.

Automated summary

The study focuses on the role of deformation of the target nucleus in fusion reactions of the C-15+Th-232 system near the Coulomb barrier; Potential between C-15 and Th-232 is calculated using the double folding procedure, taking into account the structure of the projectile nucleus and coupling to the one-neutron transfer process; The results indicate the significant role of transfer coupling in fusion reactions of neutron-rich nuclei.