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用统计擦去模型，引入新的介质中的核子一核子碰撞截面和核物质密度分布弥散度，对中能区由不同质量的重离子引起的核反应的同位素分布进行了研究，探讨了介质效应和核物质密度分布弥散度对同位素分布的影响．
The statistical erase model was used to introduce the nucleon-nucleon collision cross section and the dispersion degree of the density of the nuclear matter in the new medium. The isotope distribution of the nuclear reaction caused by heavy ions of different mass in the middle region was studied. Influence of Density Distribution of Nuclear Matter on Isotopic Distribution.