Article Dans Une Revue Phys.Rev.C Année : 2025

Two-proton correlations in the decay of $^{48}$Ni and $^{45}$Fe

S.M Wang
  • Fonction : Auteur
C Borcea
  • Fonction : Auteur
M Caamaño
  • Fonction : Auteur
B Fernández-Domínguez
  • Fonction : Auteur
D Fernández-Domínguez
  • Fonction : Auteur
J Lois-Fuentes
  • Fonction : Auteur
J Pancin
  • Fonction : Auteur
D Regueira-Castro
  • Fonction : Auteur
A.M Sánchez-Benitez
  • Fonction : Auteur
M Stanoiu
  • Fonction : Auteur
C Stodel
  • Fonction : Auteur

Résumé

The main observables of the rare two-proton emission process - half-life, total energy of the decay as well as energy and angular correlations between the emitted protons - have been measured for 48Ni and 45Fe in a recent experiment performed at the GANIL/LISE3 facility. The results, together with previous experimental work, are compared for the first time with calculations performed in the recently developed Gamow Coupled-Channel (GCC) framework and to 3-body predictions from literature. The comparison of the 48Ni and the 45Fe two-proton angular distributions with the GCC calculations confirms the adopted strength of the proton-proton interaction for both nuclei and the predominant small-angle emission. A comparison with 3-body model angular distributions indicates the shell closure of the f_7/2 orbital for 48Ni and a substantial occupancy of the p-orbital for 45Fe. Discrepancies between experimental data and theoretical predictions are found when studying the other observables: half-lives, total energy of the decay and energy correlations, showing the complexity of the description of the two-proton emission process.

Dates et versions

hal-05067176 , version 1 (14-05-2025)

Identifiants

Citer

A Ortega Moral, S.M Wang, J Giovinazzo, T Roger, B Blank, et al.. Two-proton correlations in the decay of $^{48}$Ni and $^{45}$Fe. Phys.Rev.C, 2025, 112 (6), pp.L061302. ⟨10.1103/kqb5-z2xy⟩. ⟨hal-05067176⟩
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