Nuclear multifragmentation time-scale and fluctuations of largest fragment size

Abstract

Distributions of the largest fragment charge, Zmax, in multifragmentation reactions around the Fermi energy can be decomposed into a sum of a Gaussian and a Gumbel distribution, whereas at much higher or lower energies one or the other distribution is asymptotically dominant. We demonstrate the same generic behavior for the largest cluster size in critical aggregation models for small systems, in or out of equilibrium, around the critical point. By analogy with the time-dependent irreversible aggregation model, we infer that Zmax distributions are characteristic of the multifragmentation time-scale, which is largely determined by the onset of radial expansion in this energy range.

Accepted for publication in Physical Review Letters on 8/4/2013

References in corpus (7)

• Nuclear multifragmentation and phase transition for hot nuclei
• Continuous phase transitions with a convex dip in the microcanonical entropy
• Model-independent tracking of criticality signals in nuclear multifragmentation data
• Transition from participant to spectator fragmentation in Au+Au reaction between 60 AMeV and 150 AMeV
• Fragmentation paths in dynamical models
• Fragment properties of fragmenting heavy nuclei produced in central and semi-peripheral collisions
• Common Signatures of Statistical Coulomb Fragmentation of Highly Excited Nuclei and Phase Transitions in Confined Microcanonical Systems

Cited by in corpus (4)

• Liquid-Gas phase transition in nuclei
• Investigation of collective radial expansion and stopping in heavy ion collisions at Fermi energies
• Reaction and fusion cross sections for the near-symmetric system ${}^{129}Xe{+}^{nat}Sn$ from $8$ to $35$ $AMeV$
• Distributions of the largest fragment size in multifragmentation: Traces of a phase transition