摘要
本文基于ENDF/B-Ⅶ.0核评价数据库,利用核数据加工处理程序NJOY及LATTICE_PRE为Bamboo-Lattice程序研制了一套改进后的多群截面数据库NECL2.0。基于基准题和数值分析的结果表明:采用NECL2.0数据库计算得到的燃料组件的kinf、裂变率分布、少群均匀化截面与参考解均吻合很好;考虑银铟镉共振对kinf的计算精度可提高近1 000pcm,与参考解相比最大裂变率相对偏差从-0.97%降低到-0.53%;考虑包壳锆的共振对kinf的计算精度可提高约60pcm。
Based on the ENDF/B-Ⅶ.0 nuclear evaluation data library,an improved multi-group cross section data library NECL2.0 was produced for Bamboo-Lattice code by using the nuclear data processing code NJOY and LATTICE_PRE.The results based on benchmark and numerical analysis show that the calculation results of infinite multiplication factor kinf,fission rate distribution and few-group homogenized cross section by using NECL2.0 library agree well with the corresponding reference values.Considering the resonance of Ag-In-Cd can increase accuracy of kinfby 1 000 pcm.Compared with reference values,the maximum relative deviation of fission rate reduces from-0.97%to-0.53%.Considering the resonance of zirconium in cladding can improve the accuracy of kinfby about 60 pcm.
作者
王冬勇
吴宏春
李云召
贺清明
WANG Dongyong;WU Hongchun;LI Yunzhao;HE Qingming(School of Nuclear Science and Technology,Xi＇an Jiaotong University,Xi＇an 710049,China)
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2018年第8期1367-1373,共7页
Atomic Energy Science and Technology
基金
国家自然科学基金资助项目(11522544)
