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中文摘要：
讨论了重核碰撞形成巨复合体系破裂的强阻尼反应产生超重核的问题。评述了两种主要的理论模型：唯象的多维朗之万模型和本课题组发展的微观输运理论模型。概括阐述了微观输运理论研究反应^197Au＋^197Au，^238U＋^238U和^244Pu＋^244Pu等的主要结果。给出了反应中产生的超重碎块的几率与入射能的关系，复合体系和超重碎块的衰变机制以及所形成的超重碎块的结合能和形状的分布。
英文摘要：
In this paper, the possibility of producing superheavy fragments through strongly damped reactions in very massive nuclear collisions is investigated. Two theoretical models, which are the phenomenologically multi-dimensional Langevin equation model and improved quantum molecular dynamics model developed recently by Our group, are briefly reviewed. The dependence of the production probability of superheavy fragments on the incident energy, the decay mechanism Of the composite systems and superheavy fragments, and the distributions of .the binding energy and shapes of superheavy fragments are discussed for reactions of ^244 pu＋^244 Pu, ^238 U＋^238U, ^197 Au＋^197 Au based on the improved quantum molecular dynamics model.
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