Kinetic energy spectra for fragments and break-up density in multifragmentation

Abstract

We investigate the possibility, in nuclear fragmentation, to extract information on nuclear density at break-up from fragment kinetic energy spectra using a simultaneous scenario for fragment emission. The conclusions we derive are different from the recently published results of Viola et al. [Phys. Rev. Lett. 93, (2004), 132701] assuming a sequential fragment emission and claiming that the experimentally observed decrease of peak centroids for kinetic energy spectra of fragments with increasing bombarding energy is due to a monotonic decrease of the break-up density.

arXiv comment6 pages, 3 figures

References in corpus (5)

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• Multifragmentation of a very heavy nuclear system (II): bulk properties and spinodal decomposition
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Cited by in corpus (10)

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• Nuclear multifragmentation and fission: similarity and differences
• Heavy-ion Collisions: Direct and indirect probes of the density and temperature dependence of Esym
• Evolution of the statistical disintegration of finite nuclei toward high energy
• Nuclear expansion with excitation
• Density reorganization in hot nuclei
• Break-up fragments excitation and the freeze-out volume
• Comment on Breakup Densities of Hot Nuclei
• Break-up fragment topology in statistical multifragmentation models