Ambiguities in statistical calculations of nuclear fragmentation

Details Ambiguities in statistical calculations of nuclear fragmentation Ambiguities in statistical calculations of nuclear fragmentation

2004-02-20

arxiv.org/abs/nucl-th/0402068v1

Phys.Rev. C71 (2005) 011601

Physics

Nuclear Physics

Nuclear Theory

11 pages+3 figures

Scientific paper

10.1103/PhysRevC.71.011601

The concept of freeze out volume used in many statistical approaches for disassembly of hot nuclei leads to ambiguities. The fragmentation pattern and the momentum distribution (temperature) of the emanated fragments are determined by the phase space at the freeze-out volume where the interaction among the fragments is supposedly frozen out. However, to get coherence with the experimental momentum distribution of the charged particles, one introduces Coulomb acceleration beyond this freeze-out. To be consistent, we investigate the effect of the attractive nuclear force beyond this volume and find that the possible recombination of the fragments alters the physical observables significantly casting doubt on the consistency of the statistical model.

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