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由于低能带电粒子核反应截面直接测量遇到的库仑位垒和电子屏蔽势的困难,基于准自由反应机制的特洛伊木马方法得到特别关注。利用Geant4模拟的结果,与在中国原子能研究院串列加速器上通过三体反应9Be+2H→8Be+2H+n对两体反应9Be+1H→8Be+2H的反应截面做的间接测量实验数据进行了比较,这是Geant4模拟在特洛伊木马方法中的首次应用。通过对模拟数据研究,提高了对实验数据的理解,也检验了模拟系统的可靠性,对今后的实验设计和改进提供了有益的意见。
Due to the difficulty of directly measuring the Coulomb barrier and the electronic shielding potential encountered by the low energy charged particle nuclear reaction cross section, the Trojan horse method based on the quasi-free reaction mechanism receives special attention. Based on the results of Geant4 simulation and experimental data of indirect measurement of the reaction cross-section of 9Be + 1H → 8Be + 2H by three-body reaction 9Be + 2H → 8Be + 2H + n at tandem accelerator of China Atomic Energy Research Institute For comparison, this is the first application of the Geant4 simulation in the Trojan horse approach. Through the study of simulation data, it improves the understanding of experimental data, as well as verifies the reliability of simulation system, and provides useful suggestions for future experimental design and improvement.