为了研究大质量核的融合机制,尤其是存在融合抑制的核反应的机制,提出了一新模型:两步模型。该模型将两体相互作用的过程分为两步:一是两体从远处到表面接触的过程;二是从表面接触通过形状演化到形成复合核的过程。利用该模型,研究了以48Ca为弹核的一系列核反应,计算结果非常好 In order to study the mechanism of fusion of large-mass nuclei, especially the existence of fusion-inhibited nuclear reactions, a new model is proposed: a two-step model. The model divides the process of interaction between two bodies into two steps: one is the process of the two bodies contacting from afar to the surface; the other is the process of evolving from the surface contact to the formation of complex nucleus through the shape. Using this model, a series of nuclear reactions with 48Ca as nuclei have been studied and the results are very good