Published January 1, 2020 | Version v1
Journal article Open

The percolation phase transition and statistical multifragmentation in finite systems

  • 1. Jagiellonian Univ, Smoluchowski Inst Phys, PL-30348 Krakow, Poland
  • 2. Selcuk Univ, Dept Phys, TR-42079 Konya, Turkey
  • 3. GSI Helmholtzzentrum Schwerionenforsch GmbH, D-64291 Darmstadt, Germany
  • 4. H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland
  • 5. Johannes Gutenberg Univ Mainz, Inst Nucl Phys, D-55099 Mainz, Germany

Description

The cumulant ratios up to fourth order of the Z distributions of the largest fragment in spectator fragmentation following Sn-107,Sn-124+Sn and La-124+Sn collisions at 600 MeV/nucleon have been investigated. They are found to exhibit the signatures of a second-order phase transition established with cubic bond percolation and previously observed in the ALADIN experimental data for fragmentation of Au-197 projectiles at similar energies. The deduced pseudocritical points are found to be only weakly dependent on the A / Z ratio of the fragmenting spectator source. The same holds for the corresponding chemical freeze-out temperatures of close to 6 MeV.

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