摘要
为了解决CENACE-1.0库热谱临界实验中高估有效增殖因子(keff)的问题,选取多种类型的热谱临界基准实验,对制作CENACE-1.0库的基础评价数据库CENDL-NP-1.0进行基准检验。通过检验结果的趋势分析和相关性分析,发现热能区的235U裂变截面、辐射俘获截面和裂变平均中子数可能是导致高富集度铀金属热装置keff计算结果偏高的直接原因。
To solve the overestimation of keff in the thermal criticality experiment using CENACE-1.0 data library, the evaluated nuclear data library CENDL-NP-1.0 were validated with several kinds of thermal criticality benchmarks. By analyzing the trends and the relativities among the keff results, it is found that the direct contributions to the overestimation of keff calculation results for the metal thermal installation with high uranium enrichment are the(n,f),(n,γ) cross sections and the nubar of 235 U in thermal energy region.
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2014年第S2期176-178,共3页
Nuclear Power Engineering
