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LET作为一个传统的工程参量,并不能完全满足单粒子翻转数据表征的需要,而且也不能直接地反映核反应的一些特性(包括核反应概率与次级粒子),因此研究了重离子与器件作用过程中核反应对单粒子翻转的影响。基于蒙特卡罗模拟与深入的分析,本研究对比了在直接电离与考虑核反应两种模式下的模拟结果。在模拟中,利用不同的重离子表征了核反应在单粒子翻转发生中所起的作用。结果显示,核反应对单粒子翻转截面的贡献依赖于离子的能量,并呈现非单调的变化关系。基于模拟的结果,建议用重离子核反应引起单粒子翻转的最恶劣情况来预估空间单粒子翻转率。
As a traditional engineering parameter, LET can not fully meet the need of single-particle inversion data characterization and can not directly reflect some characteristics of nuclear reactions (including the probability of nuclear reaction and secondary particles). Therefore, LET The effect of nuclear reaction on single particle turnover. Based on Monte Carlo simulation and in-depth analysis, this study compares the simulation results in two modes, direct ionization and nuclear reaction. In the simulation, different heavy ions were used to characterize the role of nuclear reactions in the occurrence of single event inversion. The results show that the contribution of the nuclear reaction to the single-particle inversion cross-section depends on the energy of the ions and shows a non-monotonic relationship. Based on the results of the simulation, it is proposed to estimate the spatial single-particle inversion rate in the worst case of heavy-ion nuclear reaction causing single-particle inversion.