CENDL-3天然锆宏观检验

Benchmark testing for zirconium of CENDL-3

介绍了利用锆的中子泄漏谱实验和氢化锆慢化体临界实验对CENDL 3的天然锆全套中子评价数据进行的宏观检验。检验工作比较了用来自CENDL 3、CENDL 2 .1、BROND 2、ENDF/B VI.2、JENDL 3 .2和JENDL 3 .3等 6个不同评价库的锆所计算的中子泄漏谱。检验还分析了氢化锆慢化体临界实验的keff计算结果。检验结论认为CENDL 3天然锆的评价较CENDL 2 .1有所改进 ,但是非弹角分布、(n ,2n)反应和连续非弹性散射的双微分截面仍需要进一步调整。

In this paper the validation of zirconium evalua ti on for CENDL-3 were reported. Leakage spectra experiment for 61-cm zirconium a nd critical experiment HEU-COMP-INTER-001 were considered. Calculation result s obtained with MCNP from evaluations of CENDL-3, CENDL-2.1, BROND-2, ENDF/B -VI.2, JENDL-3.2 and JENDL-3.3 were compared. Underestimation of discretely i nelastic scattering was observed. Slight overestimate for (n, 2n) DDX and contin uum inelastic cross section were also found in the results obtained with the nat ural zirconium evaluation for CENDL-3.