Nuclear Structure of Two-Proton Halo-Nucleus 17Ne

TL;DR

This paper investigates the structure of the two-proton halo nucleus 17Ne, showing that valence protons favor the d-state, with theoretical calculations aligning with experimental data, indicating a two-proton halo with variable core shapes.

Contribution

The study clarifies the valence proton configuration in 17Ne using three-body model calculations, highlighting the core's shape variability and confirming the two-proton halo nature.

Findings

Valence protons are more likely in the d-state.

Theoretical binding energies match experimental values better for the d-state.

17Ne exhibits halo properties with a large matter radius and weak binding energy.

Abstract

Theoretical investigation of two-proton halo-nucleus 17Ne has revealed that the valence protons are more likely to be positioned in the d-state than the s-state. In this study, this finding is clarified by calculation of the binding energy, it is found that the theoretical values for the d-state are closer to the experimental values, in contrast with those obtained for the s-state. The three-body model and MATLAB software are utilised to obtain theoretical values for the three-body-model 17Ne binding energy and matter radius. 17Ne has halo properties of a weakly bound valence proton, a binding energy of less than 1 MeV, and a large matter radius. The core deformation parameter has zero and negative values; thus, the 17Ne core exhibits both spherical and oblate shapes depending on the binding energy of the three-body system. This suggests 17Ne has two-proton halo.