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利用蒙特卡罗方法模拟计算了56 GeV铁离子穿过简化空间飞行器中水模体的总剂量深度分布以及次级粒子剂量深度分布,统计了次级中子在水模体中的通量深度分布。计算结果表明:56 GeV铁离子穿过简化空间飞行器在水模体中产生较完整的布拉格曲线,并且次级核碎片对总剂量的贡献达到了58%,其次是初始入射的铁离子以及电子和质子,其他的粒子对总剂量贡献比例较小,可忽略不计。次级中子通量在布拉格峰值附近达到最大值。
The Monte Carlo method was used to simulate the total dose depth distribution of 56 GeV ferric ions passing through the simplified space vehicle and the dose distribution of secondary particles. The flux depth distribution of secondary neutrons in water phantom . The calculated results show that the 56 GeV ferric ions pass through the simplified space vehicle to generate a complete Bragg curve in the water phantom and the contribution of the secondary core fragments to the total dose reaches 58%, followed by the initial incident iron ions and the electron and Protons, other particles to the total dose of contribution to the smaller, negligible. Secondary neutron flux reaches its maximum around the Bragg peak.