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arXiv:1406.2473nucl-th

Density Functional Theory studies of cluster states in nuclei

J. P. Ebran, E. Khan, T. Niksic, D. Vretenar

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Abstract

The framework of nuclear energy density functionals is applied to a study of the formation and evolution of cluster states in nuclei. The relativistic functional DD-ME2 is used in triaxial and reflection-asymmetric relativistic Hartree-Bogoliubov calculations of relatively light $N = Z$ and neutron-rich nuclei. The role of deformation and degeneracy of single-nucleon states in the formation of clusters is analysed, and interesting cluster structures are predicted in excited configurations of Be, C, O, Ne, Mg, Si, S, Ar and Ca $N = Z$ nuclei. Cluster phenomena in neutron-rich nuclei are discussed, and it is shown that in neutron-rich Be and C nuclei cluster states occur as a result of molecular bonding of $α$-particles by the excess neutrons, and also that proton covalent bonding can occur in $^{10}$C.

arXiv comments
Journal reference
DOI
doi:10.1103/PhysRevC.90.054329
Subjects
nucl-thNuclear Theory

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Linked by 1 identifiable commenter in 3 comments across 3 threads, from Feb 2019 to Sep 2024.

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Discussed in comments3 threads

  1. Are there individual protons and neutrons in a nucleus? 1 comment

    • > a single particle with mass and charge FWIW, atomic nuclei have fun substructure. They behave like inhomogeneous sometimes-oblate liquid drops[1] when large, and alpha-particle clusters[2] when small. I wonder if one could craft an introduction to atoms for kids, with rather…

      mncharityView on HNParent context

  2. Physicists finally nail the proton’s size, eliminating an anomaly 1 comment

    • Not a physicist, but I spent some time on this, exploring the possibility of a "teach scale down to nuclei, then nuclei up to matter" learning progression for primary school. Nuclei are quasi-classical little balls. It's electrons that are wacky quantum weirdness. Which makes…

      mncharityView on HNParent context

  3. Why neutrons and protons are modified inside nuclei 1 comment

    • Not my field, so I'll leave others to answer. But there's also further clumping. In light nuclei, nucleons are clustered as 4alpha particles (two protons and two neutrons). Simulation has ground-state 8Beryllium mass density shaped like a dumbbell of two alphas. And ground-state…

      mncharityView on HNParent context

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