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利用同位旋相关的量子分子动力学模型，研究了~(１１２)Ｓｎ＋~(１１２)Ｓｎ和~(１２４)Ｓｎ＋ ~(１２４)Ｓｎ两个反应系统在入射能量 Ｅ＝４０ＭｅＶ／ｕ时的多重碎裂。计算结果能与 实验值定性符合。观察到两个反应系统中，中等质量碎片多重性、中子多重性、 荷电粒子多重性与轻荷电粒子多重性之间的关联存在着明显的差别。另外，通 过与膨胀蒸发源模型及同位旋相关的渗透模型分析结果的比较，发现这种差别 主要是由同位旋相关的反应动力学所造成的。
The isomorphic quantum molecular dynamics (QAM) model was used to study the effect of multiple fragmentation on the reaction of ~ (112) Sn + ~ (112) Sn and ~ (124) Sn + ~ (124) Sn at incident energy E = 40MeV / u crack. The calculated results can be qualitatively consistent with the experimental values. It is observed that there is a clear difference between the two reaction systems in the correlation between multiplicity of medium masses, multiplicity of neutrons, multiplicity of charged particles and multiplicity of light charged particles. In addition, through the comparison of the results of infiltration models related to the model of the expansive evaporation source and the isospin, it is found that this difference is mainly caused by the isospin-related reaction kinetics.