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为研究在连续能量蒙卡程序临界计算中keff对核数据的敏感性分析方法,讨论keff对核数据的敏感性分析的理论基础。然后,阐述当前在连续能量蒙卡程序中广泛应用于伴随通量计算的反复裂变几率法的基本原理,以及伴随通量加权反应率的计数方法。最后,基于自主堆用蒙特卡罗程序(RMC),使用反复裂变几率法对聚乙烯球临界基准题进行敏感性分析。RMC计算结果与SCALE程序计算结果符合良好。
In order to study the sensitivity analysis of keff to nuclear data in the critical energy calculation of continuous energy montenegro program, the theoretical basis of sensitivity analysis of keff to nuclear data is discussed. Then, the basic principle of the iterative fission probability method which is widely used in the continuous energy montage program and the calculation of the accompanying fluxes is expounded, and the counting method with the flux weighted reaction rate is expounded. Finally, based on the Autonomous Stack Monte Carlo program (RMC), the sensitivity of the polyethylene ball to the critical benchmark was analyzed using the iterative fission probability method. The results of RMC calculation are in good agreement with those of SCALE program.