Abstract
We present selected results recently obtained in the study of heavy ion transfer reactions at energies close to the Coulomb barrier by employing the large solid angle magnetic spectrometer PRISMA. We discuss the production of neutron-rich heavy nuclei via multinucleon transfer processes and the related effects of secondary processes, in particular nucleon evaporation, studied in a high resolution kinematic coincidence experiment. We also present the recent results in the studies of neutron-neutron correlations for closed shell and superfluid systems.
Highlights
Nucleon transfer reactions at energies close to the Coulomb barrier always played an important role for nuclear structure and reaction dynamics
For energies close to the Coulomb barrier, transfers constitute the largest part of the total reaction cross section and are the main source for the energy dissipation from the relative motion to the intrinsic excitation
The mechanism of the production of neutron rich heavy nuclei was studied in a high resolution kinematic coincidence in the 197Au+130Te system, where the extracted mass-mass correlations allowed to study the effect of secondary processes
Summary
Nucleon transfer reactions at energies close to the Coulomb barrier always played an important role for nuclear structure and reaction dynamics. In order to employ multinucleon transfer reactions for studying both the production of neutron rich nuclei and the effects of the residual interaction, one needs to reach good mass and charge resolution, as well as high efficiency to measure low cross sections for massive transfer channels. All these demanding requirements are fulfilled by large solid angle spectrometers based on trajectory reconstruction [6,7,8]. The coupling of these spectrometers with large γ arrays [9,10,11] allowed, in addition, to identify γ rays coming from the decay of weak transfer channels associated with the population of nuclei moderately far from stability
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