Multinucleon transfer reactions in closed-shell nuclei

Abstract

Multinucleon transfer reactions in $^{40}\mathrm{Ca}+^{96}\mathrm{Zr}$ and $^{90}\mathrm{Zr}+^{208}\mathrm{Pb}$ have been measured at energies close to the Coulomb barrier in a high-resolution \ensuremath{\gamma}-particle coincidence experiment. The large-solid-angle magnetic spectrometer PRISMA coupled to the CLARA \ensuremath{\gamma} array has been employed. Trajectory reconstruction has been applied for the complete identification of transfer products. Mass and charge yields, total kinetic energy losses, \ensuremath{\gamma} transitions of the binary reaction partners, and comparison of data with semiclassical calculations are reported. Specific transitions in $^{95}\mathrm{Zr}$ populated in one-particle transfer channels are discussed in terms of particle-phonon couplings. The \ensuremath{\gamma} decays from states in $^{42}\mathrm{Ca}$ in the excitation energy region expected from pairing vibrations are also observed.