Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2011-10-28
Phys. Rev. C84 (2011) 064615
Physics
Nuclear Physics
Nuclear Theory
38 pages, 20 figures. Submitted to Phys. Rev. C
Scientific paper
10.1103/PhysRevC.84.064615
We use the tools of hybrid intranuclear-cascade/nuclear-de-excitation models to evaluate the sensitivity of several physical observables to the inclusion of a multifragmentation stage in the de-excitation chain and assess the need for a multifragmentation model in the quantitative description of p+56Fe and p+136Xe reactions at 1-GeV incident energy. We seek clear signatures of multifragmentation by comparing different state-of-the-art de-excitation models coupled with intranuclear-cascade models and by focusing on discriminating observables such as correlations and fragment longitudinal-velocity distributions. None of the considered observables can be unambiguously interpreted as a multifragmentation footprint. The experimental data are best described as originating from sequential binary decays. However, no de-excitation model can reproduce the experimental longitudinal-velocity distributions from 1-GeV p+136Xe.
Boudard Alain
Cugnon Joseph
David Jean-Christophe
Gorbinet Thomas
Leray Sylvie
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