Diproton correlation in a proton-rich Borromean nucleus 17Ne

Abstract

We carry out three-body-model calculations for a proton-rich Borromean nucleus ${}^{17}$Ne by assuming a ${}^{15}$O + $p$ + $p$ structure. To this end, we use a density-dependent contact interaction between the valence protons, explicitly treating also the Coulomb interaction. We find that the two-particle density distribution for ${}^{17}$Ne is similar to that for ${}^{16}$C, which has two valence neutrons outside the $N$ = 8 core. That is, the two protons take a spatially compact configuration, while the Coulomb repulsion plays a minor role. This indicates that there is a strong diproton correlation in the ground state of the ${}^{17}$Ne nucleus. We also show that the Coulomb interaction reduces the expectation value of the proton-proton interaction by about 14\%.

6 pages, 4 figures

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Cited by in corpus (13)

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• Role of diproton correlation in two-proton emission decay of the ${}^6$Be nucleus
• Dependence of two-proton radioactivity on nuclear pairing models
• Time-dependent approach to many-particle tunneling in one-dimension
• Theoretical study of the two-proton halo candidate ${}^{17}$Ne including contributions from resonant continuum and pairing correlations
• Coulombic effect and renormalization in nuclear pairing
• Are there good probes for the di-neutron correlation in light neutron-rich nuclei?
• Effect of proton-proton Coulomb repulsion on soft dipole excitations of light proton-rich nuclei
• Three-body properties of low-lying ${}^{12}$Be resonances
• Magnetic dipole excitation and its sum rule in nuclei with two valence nucleons
• Impurity effect of Lambda particle on the structure of 18F and 19F_Lambda
• Three-body model for an isoscalar spin-triplet neutron-proton pair in ${}^{102}\mathrm{Sb}$
• Spatial correlation of a particle-hole pair with a repulsive isovector interaction