Bimodality and Coulomb effects with a canonical thermodynamic model

Abstract

The effect of the Coulomb interaction on the phase diagram of finite nuclei is studied within the Canonical Thermodynamic Model. If Coulomb effects are artificially switched off, this model shows a phenomenology consistent with the liquid-gas phase transition. The inclusion of Coulomb does not significantly affect the phase diagram but it drastically modifies the nature and order parameter of the transition. A clear understanding of the phenomenon can be achieved looking at the distribution of the largest fragment produced in each fragmentation event. Possible connections with experimental observations are outlined.

Submitted to NPA

References in corpus (24)

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• Multiplicity Derivative: A new signature of first order phase transition in intermediate energy heavy ion collision
• First-order derivative of cluster size as a new signature of phase transition in heavy ion collisions at intermediate energies
• Model for projectile fragmentation: case study for Ni on Ta, Be and Xe on Al
• Thermodynamics of clusterized matter
• Dynamical and statistical bimodality in nuclear fragmentation
• Bimodality emerges from transport model calculations of heavy ion collisions at intermediate energy
• Finite size effects on the phase diagram of the thermodynamical cluster model
• Transformation between statistical ensembles in the modelling of nuclear fragmentation
• Effect of hyperons on phase coexistence in strange matter