Macroscopic Validation and Analysis of CENDL-3. 2 56Fe Nuclear Data Based on Criticality Benchmark

被引：0

作者：

Shi B. ^{[1
]}

Liu X. ^{[1
]}

机构：

[1] Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang

来源：

Yuanzineng Kexue Jishu/Atomic Energy Science and Technology | 2023年 / 57卷 / 07期

关键词：

!sup]56[!/sup]Fe nuclear data; criticality benchmark; effective multiplication factor; sensitivity coefficient;

D O I：

10.7538/yzk.2022.youxian.0844

中图分类号：

学科分类号：

摘要：

The latest version of CENDL database, CENDL-3. 2, was released in 2020 with the significant changes in 56Fe nuclear data compared with ENDF/B-VII. 0, the latest version of ENDF/B. In order to determine the effect of the changes on the effective multiplication factors, thirty-eight criticality benchmarks were selected for validation and analysis, including twenty-five highly enriched models, eight plutonium mental models and five other models. Then, thirty-eight criticality benchmarks were modeled in Monte Carlo program and calculated with complete ENDF/B-VII. 0, and with hybrid ENDF/B-VII.0 with CENDL-3. 2 56Fe nuclear data substituted, respectively. The calculation results of the effective multiplication factors show that the relative biases of CENDL-3. 2 are within range of - 1 046-1 955 pcm and the difference of relative biases between CENDL-3. 2 and ENDF/B-1.0 is within range of - 381-290 pcm. And the relative biases of CENDL-3. 2 and ENDF/B-VII. 0 are basically within three standard deviations. Furthermore, the effective multiplication factors of ENDF/B-VII. 0 are closer to the benchmark values for highly enriched uranium models and plutonium mental models. The effective multiplication factors of ENDF/B-VII. 0 have better consistency for highly enriched models, and the effective multiplication factors of CENDL-3. 2 have better consistency for plutonium mental models. Apart from this, the calculation results of main cross section sensitivity coefficients show that five of the thirty-eight models are not iron sensitive and the effective multiplication factors are primarily influenced by the 56Fe elastic scattering cross section, inelastic scattering cross section and radiative capture cross section. If the increment of the effective multiplication factors produced by the change of the elastic scattering cross section is larger than the decrease produced by the change of the inelastic scattering cross section and the radiative capture cross section, absolute bias is positive. Otherwise, absolute bias is negative. © 2023 Atomic Energy Press. All rights reserved.

引用

页码：1292 / 1302

页数：10

共 14 条

[1] GE Z, XU R, WU H, Et al., CENDL-3. 2. The new version of Chinese general purpose evaluated nuclear data library, EPJ Web of Conferences, 239, (2020)
[2] BROWN D A, CHADWICK M B, CAPOTE R, Et al., ENDF/B-1. 0: The 8th major release of the nuclear reaction data library with CIELO-pro-ject cross sections, new standards and thermal scattering data, Nuclear Data Sheets, 148, pp. 1-142, (2018)
[3] PLOMPEN A J M, CABELLOS O, de SAINT JEAN C, Et al., The joint evaluated fission and fusion nuclear data library, JEFF-3. 3, The European Physical Journal A, 56, 7, pp. 1-108, (2020)
[4] IWAMOTO O, IWAMOTO N, SHIBATA K, Et al., Status of JENDL, EPJ Web of Conferences, 239, (2020)
[5] BLOKHIN A I, GAI E V, IGNATYUK A V, Et al., New version of neutron evaluated data library BROND-3.1, Yad Reak Konst, 2, 2, pp. 62-93, (2016)
[6] KONING A J, ROCHMAN D, SUBLET J C, Et al., TENDL: Complete nuclear data library for innovative nuclear science and technology, Nuclear Data Sheets, 155, pp. 1-55, (2019)
[7] CHADWICK M B, CAPOTE R, TRKOV A, Et al., CIELO collaboration summary results: International evaluations of neutron reactions on uranium, plutonium, iron, oxygen and hydrogen, Nuclear Data Sheets, 148, pp. 189-213, (2018)
[8] ZHANG Bin, MA Xubo, HU Kui, Et al., Research on the influence of ', 6 Fe evaluation cross section of CENDL-3. 2 and ENDF/B-1.0 on shielding calculation, Nuclear Power Engineering, 43, 1, pp. 57-63, (2022)
[9] HU Zhijie, RUAN Xichao, NIE Yangbo, Et al., Influence of improvement of Fe and W evaluated nuclear data of CENDL library on calculated result of shielded integral experiment, Atomic Energy Science and Technology, 55, 12, pp. 2300-2308, (2021)
[10] HERMAN M, TRKOV A, CAPOTE R, Et al., Evaluation of neutron reactions on iron isotopes for CIELO and ENDF/B-1. 0, Nuclear Data Sheets, 148, pp. 214-253, (2018)

← 1 2 →