Searching for statistical equilibrium in a dynamical multifragmentation path

Journal Article · Wed Aug 15 04:00:00 EDT 2007 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.76.024602· OSTI ID:21061962

Raduta, A H ^[1]; NIPNE, RO-76900 Bucharest ^[2]; Colonna, M; Di Toro, M ^[1]

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1. LNS-INFN, via S. Sofia 62, I-95123 Catania (Italy)
2. Romania

A method for identifying statistical equilibrium stages in dynamical multifragmentation paths as provided by transport models, already successfully tested for the reaction {sup 129}Xe+{sup 119}Sn at 32 MeV/nucleon is applied here to a higher energy reaction, {sup 129}Xe+{sup 119}Sn at 50 MeV/nucleon. The method evaluates equilibrium from the point of view of the microcanonical multifragmentation model (MMM) and reactions are simulated by means of the stochastic mean field model (SMF). A unique solution, corresponding to the maximum population of the system phase space, was identified suggesting that a huge part of the available phase space is occupied even in the case of the 50 MeV/nucleon reaction, in presence of a considerable amount of radial collective flow. The specific equilibration time and volume are identified and differences between the two systems are discussed.

• OSTI ID: 21061962
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 2 Vol. 76; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COMPUTERIZED SIMULATION
MATHEMATICAL SOLUTIONS
MEAN-FIELD THEORY
MEV RANGE
NUCLEONS
PHASE SPACE
STOCHASTIC PROCESSES
TIN 119
TIN 119 TARGET
TRANSPORT THEORY
XENON 129
XENON 129 REACTIONS