Abstract
Background: Recent work found that core excitations can be important in extracting structure information from reactions.
Purpose: Our objective is to systematically explore the role of core excitation in reactions and to understand the origin of the dynamical effects.
Method: Based on the particle-rotor model of , we generate a number of models with a range of separation energies ( MeV), while maintaining a significant core excited component. We then apply the latest extension of the momentum-space-based Faddeev method, including dynamical core excitation in the reaction mechanism to all orders, to the -like reactions, and study the excitation effects for beam energies MeV.
Results: We study the resulting angular distributions and the differences between the spectroscopic factor that would be extracted from the cross sections, when including dynamical core excitation in the reaction, and that of the original structure model. We also explore how different partial waves affect the final cross section.
Conclusions: Our results show a strong beam-energy dependence of the extracted spectroscopic factors that become smaller for intermediate beam energies. This dependence increases for loosely bound systems.
- Received 27 July 2016
- Revised 15 September 2016
DOI:https://doi.org/10.1103/PhysRevC.94.044613
©2016 American Physical Society