Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2005-07-11
Nucl.Phys. A765 (2006) 252-261
Physics
Nuclear Physics
Nuclear Theory
LaTeX, 13 pages, 7 figures, to appear in Nuclear Physics A
Scientific paper
10.1016/j.nuclphysa.2005.11.001
A comparison of experimental heavy residue cross sections from the reactions 86Kr+64Ni,112,124Sn with the model of deep-inelastic transfer (DIT) is carried out. A modified expression for nucleon transfer probabilities is used at non-overlapping projectile-target configurations, introducing a dependence on isospin asymmetry at the nuclear periphery. The experimental yields of neutron-rich nuclei close to the projectile are reproduced better and the trend deviating from the bulk isospin equilibration is explained. For the neutron-rich products further from the projectile, originating from hot quasiprojectiles, the statistical multifragmentation model reproduces the mass distributions better than the model of sequential binary decay. In the reaction with proton-rich target 112Sn the nucleon exchange appears to depend on isospin asymmetry of nuclear periphery only when surface separation is larger than 0.8 fm due to the stronger Coulomb interaction at more compact di-nuclear configuration.
Souliotis G. A.
Veselsky Martin
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