Two-proton correlations in the decay of 48Ni and 45Fe
Ortega Moral A.
Wang S.M.
Giovinazzo J.
Roger T.
Blank B.
Ascher P.
Borcea C.
Caceres L.
Caamano M.
De Oliveira Santos F.
De Roubin A.
Fernandez-Dominguez B.
Fernandez-Dominguez D.
Lois Fuentes J.
Gerbaux M.
Grevy S.
Hukkanen M.
Husson A.
Kamalou O.
Kurtukian T.
Michaud J.
Pancin J.
Piot J.
Pomorski M.
Regueira-Castro D.
Sánchez A.M.
Sorlin O.
Stanoiu M.
Stodel C.
Thomas J.-C.
Vandebrouck M.
Physical Review C
Doi 10.1103/kqb5-z2xy
Volumen 112
páginas 1 - 6
2025-12-08
Citas: 0
©2025 American Physical SocietyThe 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 with three-body predictions from the literature. The comparison with 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 predominance of emission at small angles. A comparison with three-body model angular distributions indicates the shell closure of the f7/2 orbital for 48Ni and a substantial occupancy of the p orbital for 45Fe. Discrepancies between experimental data and theoretical predictions arise 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.
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