Speaker
Description
Fusion reactions involving weakly bound nuclei are strongly influenced by breakup couplings, leading to a complex interplay between complete (CF), incomplete (ICF), and total fusion (TF). A fully quantum-mechanical description of these processes remains challenging, as standard CDCC calculations naturally provide total absorption but do not directly distinguish the different fusion mechanisms. A CDCC-based method was proposed to extract CF and ICF cross sections using angular-momentum-dependent absorption probabilities of the fragments. Initially applied to the 7Li +209Bi system, the method successfully described the measured CF, ICF, and TF cross sections. In this seminar, we review the physical foundations and subsequent development of this approach, including applications to different targets and weakly bound projectiles. We discuss refinements introduced to improve the description of sub-barrier fusion and extensions to neutron-halo nuclei. Particular attention is given to how breakup couplings redistribute the fusion flux between CF and ICF. We also examine the connection between theoretical fusion mechanisms and experimentally measured observables. Finally, we discuss current limitations and perspectives for extending the framework to more complex reaction systems.