Multinucleon transfer reactions in closed-shell nuclei

Abstract

Multinucleon transfer reactions in Ca40+Zr96 and Zr90+Pb208 have been measured at energies close to the Coulomb barrier in a high-resolution γ-particle coincidence experiment. The large-solid-angle magnetic spectrometer PRISMA coupled to the CLARA γ array has been employed. Trajectory reconstruction has been applied for the complete identification of transfer products. Mass and charge yields, total kinetic energy losses, γ transitions of the binary reaction partners, and comparison of data with semiclassical calculations are reported. Specific transitions in Zr95 populated in one-particle transfer channels are discussed in terms of particle-phonon couplings. The γ decays from states in Ca42 in the excitation energy region expected from pairing vibrations are also observed. © 2007 The American Physical Society.