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近库仑势垒能区重离子核反应中,正Q值中子转移对熔合(俘获)反应的效应来源于中子转移不受库仑势垒的影响,因此,可能在炮弹被靶核俘获前的远距离处发生。目前,普遍认为中子转移会导致垒下熔合截面增强。然而,无论实验还是理论,均不能完全确定中子转移道在熔合过程中的效应。因此,相关问题需进一步研究,这里选取Q_(+2n)=+4.98 MeV的~(28)Si+~(208)Pb体系进行研究。实验在中国原子能科学研究院HI-13串列加
In near-Coulomb barrier energies, the effect of positive-Q neutron transfer on the fusion (capture) reaction in a heavy ion nuclear reaction originates from the fact that the neutron transfer is not affected by the Coulomb barrier, and therefore may be far behind the target nucleus capture Occurs at distance. At present, it is generally believed that neutron transfer will result in enhanced fusion cross-section. However, neither experiment nor theory can completely determine the effect of the neutron transfer path during the fusion process. Therefore, the related issues need further study. Here, the study of ~ (28) Si + ~ (208) Pb with Q _ (+ 2n) = + 4.98 MeV is carried out. Experiment in China Institute of Atomic Energy HI-13 tandem plus