NECP-Atlas程序中多群光子核数据处理模块的开发与验证  

Development and Verification of Multi-Group Photon Nuclear Data Processing Modules in NECP-Atlas

作　　者：徐宁 祖铁军[1] 曹良志[1] 吴宏春[1] XU Ning;ZU Tie-jun;CAO Liang-zhi;WU Hong-chun(School of Nuclear Science and Technology,Xi’an Jiaotong University,Xi’an 710049,China)

机构地区：[1]西安交通大学核科学与技术学院,西安710049

出　　处：《现代应用物理》2021年第1期20-25,共6页Modern Applied Physics

基　　金：国家自然科学基金资助项目(11735011);国家重点研发计划项目(2017YFE0302200)。

摘　　要：在核数据处理程序NECP-Atlas的基础上开发了多群光子核数据处理模块,根据用户给定的能群结构及权重谱,基于反应率守恒分别对多群光子产生截面和多群光原子反应截面进行计算处理,并利用辐射屏蔽基准题库SINBAD中的基准题对多群光子数据库进行了验证。计算结果表明,用NECP-Atlas程序与NJOY2016程序制作得到的多群光子数据库具有相近的计算精度。A module processing multi-group photon nuclear data is developed by NECP-Atlas code.Based on the reaction rate conservation theory,the multi-group neutron-induced photon production matrices and the photo-atomic interaction cross sections are processed according to the given neutron and photon weighting flux and energy group structure.The microscopic photon libraries generated by NECP-Atlas code and NJOY2016 are verified by the radiation shielding benchmark.Numerical results show that the multi-group photon cross sections generated by NECP-Atlas code agree well with the results calculated by NJOY2016.

关 键 词：NECP-Atlas程序 光子核数据处理 光子产生截面 光原子反应截面 

分 类 号：TL329[核科学技术—核技术及应用]