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Título : Lifetime Measurements of the Neutron-Rich N=30 Isotones Ca-50 and Sc-51: Orbital Dependence of Effective Charges in the fp Shell
Autor : Valiente-Dobón, J. J., Mengoni, D., Gadea, Andrés, Farmea, E., Lenzi, S. M., Lunardi, S., Dewald, A., Pissulla, T., Szilner, S., Broda, R., Recchia, F., Algora, Alejandro, Agus, L., Bazzacco, D., Benzoni, G., Bizzeti, P.G., Bizzeti-Sona, A.M., Boutachkov, P., Corradi, L., Crespi, F., De Angelis, G., Fioretto, E., Gorgen, A., Gorska, M., Gottardo, A., Grodner, E., Guiot, B., Howard, A., Krolas, W., Leoni, S., Mason, P., Menegazzo, R., Montanari, D., Montagnoli, G., Napoli, D. R., Obertelli, A., Pawlat, T., Rubio, Berta, Sahin, E., Scarlassara, F., Silvestri, R., Stefanini, A.M., Smith, J.F., Steppenbeck, D., Ur, C. A., Wady, P.T., Wrzesinksi, J, Maglione, E., Hanamoto, I.
Fecha de publicación : 23-Jun-2009
Editor: American Physical Society
Resumen: The lifetimes of the first excited states of the N=30 isotones Ca-50 and Sc-51 have been determined using the Recoil Distance Doppler Shift method in combination with the CLARA-PRISMA spectrometers. This is the first time such a method is applied to measure lifetimes of neutron-rich nuclei populated via a multinucleon transfer reaction. This extends the lifetime knowledge beyond the f(7/2) shell closure and allows us to derive the effective proton and neutron charges in the fp shell near the doubly magic nucleus Ca-48, using large-scale, shell-model calculations. These results indicate an orbital dependence of the core polarization along the fp shell.
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ISSN: 0031-9007
DOI: 10.1103/PhysRevLett.102.242502
Citación : Physical Review Letters 102(24: 242502 (2009)
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