New scalings in nuclear fragmentation

Abstract

Fragment partitions of fragmenting hot nuclei produced in central and semiperipheral collisions have been compared in the excitation energy region 4-10 MeV per nucleon where radial collective expansion takes place. It is shown that, for a given total excitation energy per nucleon, the amount of radial collective energy fixes the mean fragment multiplicity. It is also shown that, at a given total excitation energy per nucleon, the different properties of fragment partitions are completely determined by the reduced fragment multiplicity (fragment multiplicity normalized to the source size). Freeze-out volumes seem to play a role in the scalings observed.

4 pages, submitted to PRL

References in corpus (8)

• Nuclear multifragmentation and phase transition for hot nuclei
• Bimodal behavior of the heaviest fragment distribution in projectile fragmentation
• Bimodality: a possible experimental signature of the liquid-gas phase transition of nuclear matter
• Light-Ion-Induced Multifragmentation: The ISiS Project
• Comparison of dynamical multifragmentation models
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• Yield scaling, size hierarchy and fluctuations of observables in fragmentation of excited heavy nuclei
• Signals of bimodality in the fragmentation of Au quasi-projectiles

Cited by in corpus (5)

• Investigation of collective radial expansion and stopping in heavy ion collisions at Fermi energies
• Nuclear multifragmentation time-scale and fluctuations of largest fragment size
• Reaction and fusion cross sections for the near-symmetric system ${}^{129}Xe{+}^{nat}Sn$ from $8$ to $35$ $AMeV$
• Minimal fragmentation problem
• Constancy of energy partition in central heavy-ion reactions at intermediate energies