Orateur
Description
The study of reactions involving weakly bound exotic nuclei is an active field due to advances in radioactive beam facilities. Many of these nuclei can be approximately described by a model consisting of an inert core and one or more valence nucleons. However, to properly describe some of these nuclei within few-body models, additional effects must be considered, such as deformations and possible excitations of the core. This is the case of $^{17}$C and $^{19}$C, which can be approximately described as a deformed core and a weakly-bound neutron.
In this contribution, we will describe these nuclei using the NAMD model [Phys. Rev. C 111 (2025) 064614]. This model follows the outline of the Nilsson model scheme, but including microscopic information of the core from Antisymmetrized Molecular Dynamics (AMD) calculations. Different methods are considered in order to explore the effect of blocking occupied Nilsson states and including pairing correlations.
The model has been recently extended to explore transfer reactions populating the continuum of the weakly bound nucleus [arXiv:2604.14423] to analyze the 16C(d,p)17C reaction measured at GANIL [Phys. Lett. B 811 (2020) 135939; Phys. Lett. B 867 (2025) 139600], taking into appropriate consideration the treatment of the continuum and the deformation of these carbon isotopes. This model is also flexible enough to allow us to perform different calculations to illustrate how the results are affected by the energy of the $1d_{3/2}$ orbital, related with the emergence of the $N=16$ magic number.
We will show how a shell-gap greater than 5 MeV is required to be consistent with the experimental data. These findings further support the existence of an $N=16$ shell-gap as stated in [Phys. Lett. B 867 (2025) 139600].