兰州大学机构库
Measurement of the (n, 2n) reaction cross-sections of iodine and cesium induced by D-T neutrons with covariance analysis*
Lan, Changlin1; Niu, Yuxing1,2; Wei, Yuting1; Lu, Fangxiao1; Yang, Xianlin1; Xu, Ruirui3; Zhang, Yue3; Ge, Yujie1; Wang, Jiahao1; Jiang, Gong1
2023-09-01
Source PublicationChinese Physics C   Impact Factor & Quartile
ISSN1674-1137 ; 2058-6132
Volume47Issue:9
page numbers9
AbstractThe cross-sections of the I-127 (n, 2n) I-126 and Cs-133 (n, 2n) Cs-132 reactions at neutron energies of 13.83 & PLUSMN; 0.05, 14.33 & PLUSMN; 0.10, and 14.79 & PLUSMN; 0.10 MeV were measured relative to the Nb-93 (n, 2n) Nb-92m reaction using the activation technique in combination with off-line & gamma;-ray spectrometry. A neutron beam was generated from the T (d, n) He-4 reaction using the K-400 neutron generator at the China Academy of Engineering Physics. Considering the correlations between different attributes, detailed uncertainty propagation was performed using covariance analysis, and the cross-sections were reported with their uncertainties and correlation matrix. The uncertainty of the measurement cross-sections ranged from 4.84 to 5.90%, which is lower than previous experimental data. Furthermore, the theoretical excitation functions of the I-127 (n, 2n) I-126 and Cs-133 (n, 2n) Cs-132 reactions were calculated using the TALYS-1.95 and EMPIRE-3.2.3 codes. Then, the experimentally determined cross-sections were analyzed by comparing them with literature data available in the EXFOR database and evaluated nuclear data in the ENDF/B-VIII.0, JEFF-3.3, JENDL-5, BROND-3.1, CENDL-3.2, and TENDL-2021 databases. Compared with the values previously reported in the 13.8-14.8 MeV energy region, the precision of the results obtained in this study was greatly improved. The current experimental results with thorough uncertainties and covariance information are critical for verifying the reliability of the theoretical model and improving the quality of the nuclear database.
KeywordI-127 (n 2n) I-126 Cs-133 (n 2n) Cs-132 cross-section neutron activation covariance analysis excitation function
PublisherIOP Publishing Ltd
DOI10.1088/1674-1137/ace313
Indexed BySCIE
Language英语
WOS Research AreaPhysics
WOS SubjectPhysics, Nuclear ; Physics, Particles & Fields
WOS IDWOS:001037378200001
Original Document TypeArticle
Citation statistics
Document Type期刊论文
Identifierhttps://ir.lzu.edu.cn/handle/262010/569088
Collection兰州大学
Corresponding AuthorLan, Changlin; Wei, Yuting
Affiliation
1.Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China;
2.China Natl Nucl Corp, Beijing 100045, Peoples R China;
3.China Inst Atom Energy, Key Lab Nucl Data, Beijing 102413, Peoples R China
Recommended Citation
GB/T 7714
Lan, Changlin,Niu, Yuxing,Wei, Yuting,et al. Measurement of the (n, 2n) reaction cross-sections of iodine and cesium induced by D-T neutrons with covariance analysis*[J]. Chinese Physics C,2023,47(9).
APA Lan, Changlin.,Niu, Yuxing.,Wei, Yuting.,Lu, Fangxiao.,Yang, Xianlin.,...&Jiang, Gong.(2023).Measurement of the (n, 2n) reaction cross-sections of iodine and cesium induced by D-T neutrons with covariance analysis*.Chinese Physics C,47(9).
MLA Lan, Changlin,et al."Measurement of the (n, 2n) reaction cross-sections of iodine and cesium induced by D-T neutrons with covariance analysis*".Chinese Physics C 47.9(2023).
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