Lifetime measurements of the neutron-rich N=30 isotones Ca50 and Sc51: Orbital dependence of effective charges in the fp shell

J. J. Valiente-Dobón, D. Mengoni, A. Gadea, E. Farnea, S. M. Lenzi, S. Lunardi, A. Dewald, Th Pissulla, S. Szilner, R. Broda, F. Recchia, A. Algora, L. Angus, D. Bazzacco, G. Benzoni, P. G. Bizzeti, A. M. Bizzeti-Sona, P. Boutachkov, L. Corradi, F. CrespiG. De Angelis, E. Fioretto, A. Görgen, M. Gorska, A. Gottardo, E. Grodner, B. Guiot, A. Howard, W. Królas, S. Leoni, P. Mason, R. Menegazzo, D. Montanari, G. Montagnoli, D. R. Napoli, A. Obertelli, T. Pawłat, B. Rubio, E. Šahin, F. Scarlassara, R. Silvestri, A. M. Stefanini, J. F. Smith, D. Steppenbeck, C. A. Ur, P. T. Wady, J. Wrzesiński, E. Maglione, I. Hamamoto

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Abstract

The lifetimes of the first excited states of the N=30 isotones Ca50 and Sc51 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 f7/2 shell closure and allows us to derive the effective proton and neutron charges in the fp shell near the doubly magic nucleus Ca48, using large-scale, shell-model calculations. These results indicate an orbital dependence of the core polarization along the fp shell.

Original languageEnglish
Article number242502
JournalPhysical review letters
Volume102
Issue number24
DOIs
Publication statusPublished - Jun 16 2009

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Valiente-Dobón, J. J., Mengoni, D., Gadea, A., Farnea, E., Lenzi, S. M., Lunardi, S., Dewald, A., Pissulla, T., Szilner, S., Broda, R., Recchia, F., Algora, A., Angus, L., Bazzacco, D., Benzoni, G., Bizzeti, P. G., Bizzeti-Sona, A. M., Boutachkov, P., Corradi, L., ... Hamamoto, I. (2009). Lifetime measurements of the neutron-rich N=30 isotones Ca50 and Sc51: Orbital dependence of effective charges in the fp shell. Physical review letters, 102(24), [242502]. https://doi.org/10.1103/PhysRevLett.102.242502