Modelling incomplete fusion dynamics of weakly-bound nuclei at near-barrier energies

TL;DR

This paper develops a classical dynamical model to study incomplete fusion in reactions involving weakly-bound nuclei at near-barrier energies, highlighting its role in populating high-spin states and alpha production.

Contribution

It introduces a quantitative model for incomplete fusion dynamics, enabling better understanding of reaction mechanisms and their observable signatures at near-barrier energies.

Findings

Incomplete fusion effectively populates high-spin states.

Contribution to alpha production decreases near the Coulomb barrier.

Angular separation helps distinguish reaction processes experimentally.

Abstract

The classical dynamical model for reactions induced by weakly-bound nuclei at near-barrier energies is developed further. It allows a quantitative study of the role and importance of incomplete fusion dynamics in asymptotic observables, such as the population of high-spin states in reaction products as well as the angular distribution of direct alpha-production. Model calculations indicate that incomplete fusion is an effective mechanism for populating high-spin states, and its contribution to the direct alpha production yield diminishes with decreasing energy towards the Coulomb barrier. It also becomes notably separated in angles from the contribution of no-capture breakup events. This should facilitate the experimental disentanglement of these competing reaction processes.