RT Journal Article
T1 Two-proton correlations in the decay of 48Ni and 45Fe
A1 Ortega Moral, A.
A1 Sánchez Benítez, Ángel Miguel
A1 Vandebrouck, M.
AB The main observables of the rare two-proton emission process - half-life, total energy of the decayas well as energy and angular correlations between the emitted protons - have been measured for48Ni and 45Fe in a recent experiment performed at the GANIL/LISE3 facility. The results, togetherwith previous experimental work, are compared for the first time with calculations performed inthe recently developed Gamow Coupled-Channel (GCC) framework and to 3-body predictions fromliterature. The comparison of the 48Ni and the 45Fe two-proton angular distributions with theGCC calculations confirms the adopted strength of the proton-proton interaction for both nucleiand the predominant small-angle emission. A comparison with 3-body model angular distributionsindicates the shell closure of the f7/2 orbital for 48Ni and a substantial occupancy of the p-orbital for45Fe. Discrepancies between experimental data and theoretical predictions are found when studyingthe other observables: half-lives, total energy of the decay and energy correlations, showing thecomplexity of the description of the two-proton emission process
PB Cornell University
YR 2025
FD 2025-04
LK https://hdl.handle.net/10272/25597
UL https://hdl.handle.net/10272/25597
LA eng
NO Moral, A. O., Wang, S. M., Giovinazzo, J., Roger, T., Blank, B., Ascher, P., Borcea, C., Caceres, L., Caamano, M., Santos, F. de O., de Roubin, A., Fernandez-Dominguez, B., Fernandez-Dominguez, D., Lois-Fuentes, J., Gerbaux, M., Grevy, S., Hukkanen, M., Husson, A., Kamalou, O., … Vandebrouck, M. (2025). Two-proton correlations in the decay of 48Ni and 45Fe (Version 1). arXiv. https://doi.org/10.48550/ARXIV.2504.14607
NO We are grateful to the ion-source and acceleratorstaff at the Grand Acc´el´erateur National d’Ions Lourds(GANIL) for the provision of a stable, high-intensity,primary 58Ni beam. This work was supported by EuropeanUnion’s Horizon 2020 Framework research andinnovation programme 654002 (ENSAR2). The ACTARTPC development was funded by the EuropeanResearch Council under the European Union’s SeventhFramework Program (FP7/2007-2013)/ERC grant agreementno 335593 and by the Conseil R´egional d’Aquitaine,France (grant no 2014-1R60402 - 00003319). A. OrtegaMoral wants to acknowledge A. Navin for helpful discussionsand comments during the drafting of this paper
DS Repositorio Institucional de la Universidad de Huelva
RD 30 may 2026