New scalings in nuclear fragmentation

Details New scalings in nuclear fragmentation New scalings in nuclear fragmentation

2010-02-08

arxiv.org/abs/1002.1645v2

Physical Review Letters 105 (2010) 142701

Physics

Nuclear Physics

Nuclear Experiment

4 pages, submitted to PRL

Scientific paper

10.1103/PhysRevLett.105.142701

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.

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