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首页> 外文期刊>Progress of Theoretical Physics >Multifragmentation and a liquid-gas transition of a nuclear system studied with AMD-MF and Gogny effective interaction
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Multifragmentation and a liquid-gas transition of a nuclear system studied with AMD-MF and Gogny effective interaction

机译：利用AMD-MF和Gogny有效相互作用研究核系统的多碎片和液-气过渡

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Multifragmentation and a liquid-gas phase transition of a nuclear system are studied using AMD-MF (antisymmetrized molecular dynamics with momentum fluctuation). An accurate calculation of the Gogny interaction is made, and a good reproduction of isotopic binding energies is obtained. Though the system is small (A = 36), the multifragmentation system seems to exhibit liquid-like, mixed and gas-like configurations and a transition from a cold liquid-like phase to a gas phase is strongly dependent on the system radius, i.e, the density of the system. Unlike the calculation with the Volkov force, a clear indication of the decrease of temperature at the end of the liquid phase is not seen. Changes in the fragmentation channel as a function of the excitation energy exhibit good agreement with the result of the statistical model. The caloric curve of each cluster possesses a Fermi gas-like liquid phase that is followed by a constant temperature and a sharp increase of nuclear radii. [References: 29]
机译：使用AMD-MF（具有动量波动的反对称分子动力学）研究了核系统的多片段化和液相-气相转变。进行了精确的Gogny相互作用的计算，并获得了同位素结合能的良好再现。尽管系统很小（A = 36），但多碎片系统似乎表现出液态，混合态和气态构型，从冷液态到气相的转变很大程度上取决于系统半径，即，系统的密度。与用沃尔科夫力进行计算不同，没有看到液相结束时温度下降的明确指示。碎片通道的变化作为激发能的函数与统计模型的结果显示出很好的一致性。每个团簇的热量曲线具有费米（Fermi）气态液相，随后是恒定温度和核半径的急剧增加。 [参考：29]

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