Abstract
We present a theoretical description of (p, pn) reactions induced by two-neutron halo nuclei at intermediate energies. For this purpose, we use a reaction framework that incorporates a full three-body model for the projectile, and we focus on the cases of 11Li and 14Be. Our results provide a direct link between the structure properties of these nuclei and different reaction observables, such as relative-energy spectra or momentum distributions. We discuss also on the link between dineutron correlations and opening-angle distributions.
Highlights
Two-neutron halo nuclei are very exotic systems characterized by a diffuse matter distribution arising from the very weakly bound nature of two valence neutrons around a more compact core [1,2,3]
Many different techniques have been used to explore the properties of two-neutron halo nuclei, such as Coulomb Dissociation [6, 7], neutron removal [8, 9], or low-energy scattering [10, 11], which provide invaluable insight into the limits of nuclear stabilily
We described the (p, pn) process within the Transfer to the Continuum (TC) framework
Summary
Two-neutron halo nuclei are very exotic systems characterized by a diffuse matter distribution arising from the very weakly bound nature of two valence neutrons around a more compact core [1,2,3]. Three-body models are a well-established approach to describe two-neutron halo nuclei and have shown that, while a good knowledge of the unbound core + n subsystems is key to understand their properties, the correlation between the valence neutrons plays a fundamental role [16, 17]. In this contribution, we provide a summary of some recent developments in the description of (p, pn) reactions induced by two-neutron halos using a full three-body model for the projectile. We adopt a sudden model approximation to analyze momentum and angular distributions, and we link the reaction observables with structure properties such as the partial-wave content and dineutron correlations
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