Spectroscopy of neutron-rich nuclei populated through binary heavy-ion collisions.

Neutron-rich nuclei from A = 50 to A = 80 have been studied through multi-nucleon transfer reactions by bombarding 208Pb and 238U targets with beams of 48Ca, 64Ni, 70Zn and 82Se. The gamma-array CLARA coupled to the large-acceptance magnetic spectrometer PRISMA gave unambiguous identification of prompt γ rays belonging to each nucleus. The existence of the N = 32 sub-shell closure has been corroborated through the study of odd V isotopes, whereas a sizable gap at N = 34 has been evidenced from the spectroscopy of 51Ca and 52Sc. The evolution of the N = 50 shell closure far from stability has been studied down to Z = 31. With the 48Ca beam we have applied for the first time the Recoil Distance Dopple Shift technique to measure lifetimes of neutron-rich nuclei populated in multi-nucleon transfer reactions. Effective charges in the fp shell above 48Ca have been derived. The first implementation of the tracking array AGATA (the so called “Demon-strator”) will be soon coupled to the PRISMA spectrometer at Legnaro. The future prospects with the use of the Demonstrator are also presented. [ABSTRACT FROM AUTHOR]