Abstract
The Liège intranuclear-cascade model (INCL) has been improved using a refined description of the matter and energy densities in the nuclear surface. Hartree-Fock-Bogoliubov calculations with the Skyrme interaction were used to obtain a more realistic description of the proton and neutron density profiles. We find that the new approach, together with a realistic modeling of the de-excitation process of the nuclear pre-fragments, improves the description of the production cross sections of the heaviest nuclear residues produced by charge-exchange processes in spallation reactions, where the excitation of baryonic resonances plays an important role.
Highlights
In the last decade, different experiments were performed at GSI using the fragment separator FRS to study the production of charge-exchange residues in spallation reactions [1]
This kind of measurement could be extended to other nuclear residues produced by charge-exchange reactions to investigate the in-medium properties of the baryonic resonances as illustrated in Fig. 1, where the radial distribution calculated with the Liege intranuclear-cascade model (INCL) [10] is displayed for different nuclear residues
The initial conditions of the Liege intranuclear-cascade model (INCL) have been improved within Hartree-Fock-Bogoliubov calculations to take into account the presence of proton and neutron skins following the prescriptions given in our previous work [21]
Summary
Different experiments were performed at GSI using the fragment separator FRS to study the production of charge-exchange residues in spallation reactions [1]. Charge-exchange collisions produced in proton-induced reactions on nuclei are found as an optimum tool to investigate the in-medium properties of baryonic resonances [8].
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