Lifetime measurements of the neutron-rich N = 30 isotones 50Ca and 51Sc: orbital dependence of effective charges in the fp shell.

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.

Cite this paper

@article{ValienteDobn2009LifetimeMO, title={Lifetime measurements of the neutron-rich N = 30 isotones 50Ca and 51Sc: orbital dependence of effective charges in the fp shell.}, author={J. J. Valiente-Dob{\'o}n and Daniele Mengoni and Alejandro Gadea and E . Farnea and Silvia M. Lenzi and Stefano Lunardi and Andreas Dewald and Th Pissulla and S . Szilner and Ryszard Broda and F. Recchia and A . Algora and Liselotte Angus and D. Bazzacco and G . Benzoni and P . G . Bizzeti and A. M. Bizzeti-Sona and P . Boutachkov and Lorenzo Corradi and F. C. L. Crespi and Giovanni De Angelis and Eduardo B Fioretto and Andreas G{\"{o}rgen and Magda Gorska and A . Gottardo and Ernest Grodner and Ben Guiot and Armando M. Howard and W . Kr{\'o}las and S. Leoni and Pam Mason and R. Menegazzo and Domenico Montanari and G. Montagnoli and Daniel R. Napoli and Alexandre Obertelli and T. Pawłat and G. Pollarolo and Bego{\~n}a Rubio and Ezgi Sahin and F. Scarlassara and Romano Silvestri and Ana M. Stefanini and Jeffrey F. Smith and D. Steppenbeck and Calin A. Ur and P T Wady and Jacek Wrzesiński and Emilia Maglione and Ikuko Hamamoto}, journal={Physical review letters}, year={2009}, volume={102 24}, pages={242502} }