Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2010-04-29
Phys.Rev.C82:054613,2010
Physics
Nuclear Physics
Nuclear Theory
11 pages, 13 figures, submitted to Phys. Rev. C
Scientific paper
10.1103/PhysRevC.82.054613
We undertake a quantitative comparison of multi-fragmentation reactions, as modeled by two different approaches: the Antisymmetrized Molecular Dynamics (AMD) and the momentum-dependent stochastic mean-field (SMF) model. Fragment observables and pre-equilibrium (nucleon and light cluster) emission are analyzed, in connection to the underlying compression-expansion dynamics in each model. Considering reactions between neutron-rich systems, observables related to the isotopic properties of emitted particles and fragments are also discussed, as a function of the parametrization employed for the isovector part of the nuclear interaction. We find that the reaction path, particularly the mechanism of fragmentation, is different in the two models and reflects on some properties of the reaction products, including their isospin content. This should be taken into account in the study of the density dependence of the symmetry energy from such collisions.
Colonna Maria
Ono Akira
Rizzo J.
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