Report
Neutron-proton pairing in the N=Z radioactive fp-shell nuclei 56Ni and 52Fe probed by pair transfer
| العنوان: | Neutron-proton pairing in the N=Z radioactive fp-shell nuclei 56Ni and 52Fe probed by pair transfer |
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| المؤلفون: | Crom, B. Le, Assié, M., Blumenfeld, Y., Guillot, J., Sagawa, H., Suzuki, T., Honma, M., Achouri, N. L., Bastin, B., Borcea, R., Catford, W. N., Clement, E., Caceres, L., Caamano, M., Corsi, A., De France, G., Delaunay, F., De Séréville, N., Fernandez-Dominguez, B., Fisichella, M., Franchoo, S., Georgiadou, A., Gibelin, J., Gillibert, A., Hammache, F., Kamalou, O., Knapton, A., Lapoux, V., Leblond, S., Macchiavelli, A. O., Marques, F. M., Matta, A., Menager, L., Morfouace, P., Orr, N. A., Pancin, J., Pereira-Lopez, X., Perrot, L., Piot, J., Pollacco, E., Ramos, D., Roger, T., Rotaru, F., Sanchez-Benitez, A. M., Sénoville, M., Sorlin, O., Stanoiu, M., Stefan, I., Stodel, C., Suzuki, D., Thomas, J-C, Vandebrouck, M. |
| سنة النشر: | 2021 |
| المجموعة: | Nuclear Experiment |
| مصطلحات موضوعية: | Nuclear Experiment |
| الوصف: | The isovector and isoscalar components of neutron-proton pairing are investigated in the N=Z unstable nuclei of the \textit{fp}-shell through the two-nucleon transfer reaction (p,$^3$He) in inverse kinematics. The combination of particle and gamma-ray detection with radioactive beams of $^{56}$Ni and $^{52}$Fe, produced by fragmentation at the GANIL/LISE facility, made it possible to carry out this study for the first time in a closed and an open-shell nucleus in the \textit{fp}-shell. The transfer cross-sections for ground-state to ground-state (J=0$^+$,T=1) and to the first (J=1$^+$,T=0) state were extracted for both cases together with the transfer cross-section ratios $\sigma$(0$^+$,T=1) /$\sigma$(1$^+$,T=0). They are compared with second-order distorted-wave born approximation (DWBA) calculations. The enhancement of the ground-state to ground-state pair transfer cross-section close to mid-shell, in $^{52}$Fe, points towards a superfluid phase in the isovector channel. For the "deuteron-like" transfer, very low cross-sections to the first (J=1$^+$,T=0) state were observed both for \Ni\phe\, and \Fe\phe\, and are related to a strong hindrance of this channel due to spin-orbit effect. No evidence for an isoscalar deuteron-like condensate is observed. Comment: 7 pages, 4 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1016/j.physletb.2022.137057 |
| URL الوصول: | http://arxiv.org/abs/2104.10708 |
| رقم الانضمام: | edsarx.2104.10708 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1016/j.physletb.2022.137057 |
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