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Correction of Multigroup Cross Sections for Resolved Resonance Interference in Mixed Absorbers

机译：混合吸波材料中解决共振干涉的多组截面校正

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The effect that interference between resolved resonances has on averaging multigroup cross sections is examined for thermal reactor-type problems. A simple and efficient numerical scheme is presented to correct a preprocessed multigroup library for interference effects. The procedure is implemented in a design oriented lattice physics computer code and compared with rigorous numerical calculations. The approximate method for computing resonance interference correction factors is applied to obtaining fine-group cross sections for a homogeneous uranium-plutonium mixture and a uranium oxide lattice. It was found that some fine group cross sections are changed by more than 40% due to resonance interference. The change in resonance interference correction factors due to burnup of a PWR fuel pin is examined and found to be small. The effect of resolved resonance interference on collapsed broad-group cross sections for thermal reactor calculations is discussed. (ERA citation 07:046813)

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作者
Williams, M. L.;
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年度 1982
页码 1-36
总页数 36
原文格式 PDF
正文语种 eng
中图分类工业技术;
关键词
Thermal reactors; Reactor kinetics; Cross sections; Nuclear data collections; Resonance integrals;

机译：热反应堆;反应堆动力学;截面;核数据收集;共振积分;

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2. In-Rod Effective Cross Sections of Resonance Absorbers Evaluated with Routine Cell Codes [J] . M. Segev, G. Raitses, J.M. Paratte Nuclear science and engineering . 1999,第1期

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机译：评估〜（182,183,184,186）中子横截面和分辨共振区的共聚员
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机译：$ Sup 239 $ Pu ADN $ SP 232 $ PU裂变和捕获横截面和$ SUP 232 $ TH捕获横截面之间的干涉相互作用之间的影响

Correction of Multigroup Cross Sections for Resolved Resonance Interference in Mixed Absorbers

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