Freeze-out Concept in Antisymmetrized Molecular Dynamics
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LIN Weiping,
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LIU Xingquan,
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HUANG Meirong,
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ZHANG Suyalatu,
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CHEN Zhiqiang,
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WANG Jiansong,
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HAN Rui,
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LIU Jianli,
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REN Peipei,
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SHI Fudong,
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Roy Wada
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Graphical Abstract
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Abstract
As a part of statistical freeze-out study in antisymmetrized molecular dynamics (AMD), an analysis of 112Sn+112Sn at 50 MeV/nucleon is presented. Using the self-consistent method combined with the Modified Fisher model, the fragmenting source density, ρ/ρ0=0.69±0.03, temperature, T =(6.1±0.2)MeV, are extracted. By comparing the maximum density in the system during the time evolution of AMD calculation, a significantly lower density is found for the fragmenting source density. The extracted
fragmenting source density and temperature are very similar to those for 40Ca + 40Ca at 35 MeV/nucleon and 64Zn + 112Sn at 40 MeV/nucleon. These indicate that there is a common statistical freeze-out volume at the time of the formation of intermediate mass fragments (IMFs) in AMD transport model.
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