Ambiguities in statistical calculations of nuclear fragmentation

Abstract

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.

11 pages+3 figures

References in corpus (2)

• Liquid-Gas Phase Transition of Supernova Matter and Its Relation to Nucleosynthesis
• Microcanonical Lattice Gas Model for Nuclear Disassembly

Cited by in corpus (6)

• The many facets of the (non relativistic) Nuclear Equation of State
• Measuring the Temperature of Hot Nuclear Fragments
• Statistical description of nuclear break-up
• Nuclear multifragmentation within the framework of different statistical ensembles
• The Statistical Multifragmentation Model with Skyrme Effective Interactions
• Break-up fragment topology in statistical multifragmentation models