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给出了用多群蒙特卡罗方法计算核裂变系统有效增殖因子、中子通量能谱和中子泄漏谱等的方法 ,对球形快中子核裂变系统进行了多群蒙特卡罗次临界计算 .计算所得的不同次临界深度的Keff、中子寿命、活性区中子通量以及中子泄漏彼此相容 .从次临界过渡到临界的有效增殖因子Keff计算值与实验结果符合 .以连续光滑曲线的形式给出了中子通量能谱和泄漏谱 ,谱图清晰地显示了符合中子输运规律的精细情况 .
The method of multi-group Monte Carlo method to calculate effective proliferation factor, neutron flux energy spectrum and neutron leakage spectrum of nuclear fission system is given. The multi-group Monte-Carlo subcritical The calculated Keff, neutron lifetime, neutron flux in the active region and neutron leakage are compatible with each other.The calculated value of effective growth factor Keff from sub-critical to critical is consistent with the experimental results, The neat flux and leakage spectra are given in the form of smooth curves, and the spectra clearly show the fine details that fit the neutron transport law.