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用统计擦碎模型对中能区不同弹靶体系在弹核碎裂反应中的同位旋效应和同位旋标度率现象进行了系统研究．发现归一的同位素分布峰位差和约化的同位旋标度率参数随(Z_(proj)-Z)/Z_(proj) or(N_(proj)-N)/N_(proj)呈指数下降,与反应系统大小无关．指出约化的同位旋标度率参数可以用来研究中能重离子碰撞中反应系统的激发程度和非对称核物质的状态方程．
A systematic study of isospin effect and isospin scaling of different bomb systems in the mid-energy region during the fragmentation of the missile was conducted by using a statistical model. It was found that the normalized peak position of isotopic distribution and the reduced isospin parameter decreased exponentially with (proj) -Z / proj or (proj) -N / proj, Has nothing to do with the size of the reaction system. It is pointed out that the reduced isospin rate parameter can be used to study the excitation of reaction system and the equation of state for asymmetric nuclear matter in heavy ion collisions.