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本文利用改进的量子分子动力学模型（ＭＱＭＤ）研究中能重离子碰撞中的多重碎裂过程．在ＭＱＭＤ的基础上通过模拟计算发现：ＭＱＭＤ由于考虑了动量相关势和Ｐａｕｌｉ势，极大地改善了多重碎裂产额的计算结果与实验数据的比较．同时研究了二者对碰撞动力学的不同影响．最后，讨论了理论计算与实验结果仍有矛盾的原因，并提出了进一步改进的方案．
In this paper, an improved quantum molecular dynamics model (MQMD) is used to study the multiple fragmentation process in heavy ion collisions. On the basis of MQMD, it is found through simulation that MQMD has greatly improved the calculation results of multifragmentation yield compared with the experimental data due to momentum momentum and Pauli potential. At the same time, the different effects of the two on collision dynamics are studied. Finally, the reasons why the theoretical calculation is still contradictory to the experimental results are discussed, and the solutions for further improvement are put forward.