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Equivalence between two- and three-cluster models: Application to the C 15 and F 15 nuclei

par Descouvemont, Pierre ;Dufour, Marianne
Référence Physical Review C, 109, 3, 034303
Publication Publié, 2024-03-01

Article révisé par les pairs

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Résumé :

We use a microscopic cluster model to investigate the C15 nucleus. Two variants are considered: a two-cluster C14+n description and a three-cluster C13+n+n approach. We show that C15 bound-state energies converge to similar values, provided that the number of C14 states is sufficient. We also study negative-parity states, and show that the three-cluster model is more appropriate. With the same nucleon-nucleon interaction, we analyze the F15 spectrum, where all known states are unbound.