1. Lifetime measurements of the neutron-rich N = 30 isotones 50Ca and 51Sc: orbital dependence of effective charges in the fp shell.
- Author
-
Valiente-Dobón JJ, Mengoni D, Gadea A, Farnea E, Lenzi SM, Lunardi S, Dewald A, Pissulla T, Szilner S, Broda R, Recchia F, Algora A, Angus L, Bazzacco D, Benzoni G, Bizzeti PG, Bizzeti-Sona AM, Boutachkov P, Corradi L, Crespi F, de Angelis G, Fioretto E, Görgen A, Gorska M, Gottardo A, Grodner E, Guiot B, Howard A, Królas W, Leoni S, Mason P, Menegazzo R, Montanari D, Montagnoli G, Napoli DR, Obertelli A, Pawłat T, Pollarolo G, Rubio B, Sahin E, Scarlassara F, Silvestri R, Stefanini AM, Smith JF, Steppenbeck D, Ur CA, Wady PT, Wrzesiński J, Maglione E, and Hamamoto I
- Abstract
The lifetimes of the first excited states of the N = 30 isotones (50)Ca and (51)Sc 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 (48)Ca, using large-scale, shell-model calculations. These results indicate an orbital dependence of the core polarization along the fp shell.
- Published
- 2009
- Full Text
- View/download PDF