50,52,53,54Cr光核反应数据评价

通过分析光子诱发52,50Cr核反应的各类实验数据,澄清52Cr光子吸收截面评价数据与中子、质子出射截面测量值间的分歧,给出了52Cr中子出射截面实验数据的修正;选取EGLO模型光子强度函数,结合准氘模型,给出光子吸收截面。在此基础上,采用最新研制的光子与中重核反应计算程序MEND-G,通过优化理论模型参数,包括剩余核的能级密度和对能修正参数,给出光子能量在200 MeV范围内的n、p、${{\rm{\alpha }}}$等粒子出射核反应的截面,52,50Cr的计算结果在30 MeV以下能区很好地符合了现有实验数据,并按国际标准ENDF/B-6库格式给出了50,52,53,54Cr的全套数据文档,便于核工程用户使用。     

Neutron activation cross section data library

To satisfy the requirements of nuclear reaction cross sections in nuclear engineering applications and nuclear physics studies, the Neutron Activation Cross Section Data Library has been established. 818 target nuclei including unstable target or isomeric target nuclei are considered in this library. The induced neutron energy range region is between 10^-5 eV and 20 MeV. The standard ENDF-6 format is adopted, including general information, reaction cross sections, multiplicities, and so on. The recommended reaction cross sections were obtained using UNF code system and FDRR nuclear model codes or systematic analysis based on available experimental data. The full evaluated dataset containing the evaluated activation cross sections is openly available at http://doi.org/10.57760/sciencedb.j00113.00024.     

中高能核数据评价和建库国际概况

简要介绍了中高能核数据评价和建库的国际概况,较细致地讨论了中高能核反应实验测量、理论计算、积分检验、评价和建库等,并对我国今后中高能核数据工作提出了建议.     

核反应实验数据库(EXFOR)

核反应实验数据库(EXFOR)及其检索系统提供了丰富的中低能核反应物理信息和数据,已经成为国际上最全面的核反应实验数据汇编.目前,由国际原子能机构核数据科(IAEA/NDS)协调管理,国际核反应数据中心协作网(NRDC)13个成员进行全球性合作,旨在协调国际范围内核反应实验数据的收集、编纂和传播.中国核数据中心(CND...