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<p>The neutron capture resonance parameters for <sup>159</sup>Tb are crucial for validating nuclear models, nucleosynthesis during the neutron capture process, and nuclear technology applications. In this study, resonance analyses were performed for the neutron capture cross sections of <sup>159</sup>Tb measured at the China Spallation Neutron Source (CSNS) backscattering white neutron beamline (Back-n) facility. The resonance parameters were extracted from the <i>R</i>-Matrix code SAMMY and fitted to the experimental capture yield up to the 1.2&#xa0;keV resolved resonance region (RRR). The average resonance parameters were determined by performing statistical analysis on the set of the resonance parameters in the RRR. These results were used to fit the measured average capture cross sections using the FITACS code in the unresolved resonance region from 2&#xa0;keV to 1&#xa0;MeV. The contributions of partial waves <InlineEquation ID="IEq4"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="41365_2024_1617_Article_IEq4.gif" Format="GIF" Height="17" Rendition="HTML" Resolution="72" Type="Linedraw" Width="68" /> </InlineMediaObject> <EquationSource Format="TEX">\(l=0,1,2\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>l</mi> <mo>=</mo> <mn>0</mn> <mo>,</mo> <mn>1</mn> <mo>,</mo> <mn>2</mn> </mrow> </math></EquationSource> </InlineEquation> to the average capture cross sections are reported.</p>

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Resonance analysis of 159Tb(n, γ) reaction based on the CSNS Back-n experiment

  • 期刊论文

  • 发表日期：

    2025年1月28日

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  • De-Xin Wang,
  • Su-Ya-La-Tu Zhang,
  • Wei Jiang,
  • Jie Ren,
  • Mei-Rong Huang,
  • Jing-Yu Tang,
  • Xi-Chao Ruan,
  • Hong-Wei Wang,
  • Long-Xiang Liu,
  • Xue Li,
  • Dan-Dan Niu,
  • Guo Li,
  • Gu-Fu Meng,
  • Yong-Shun Huang,
  • Zhi-Long Wang,
  • Yu Bai,
  • Xue Yang

摘要

The neutron capture resonance parameters for 159Tb are crucial for validating nuclear models, nucleosynthesis during the neutron capture process, and nuclear technology applications. In this study, resonance analyses were performed for the neutron capture cross sections of 159Tb measured at the China Spallation Neutron Source (CSNS) backscattering white neutron beamline (Back-n) facility. The resonance parameters were extracted from the R-Matrix code SAMMY and fitted to the experimental capture yield up to the 1.2 keV resolved resonance region (RRR). The average resonance parameters were determined by performing statistical analysis on the set of the resonance parameters in the RRR. These results were used to fit the measured average capture cross sections using the FITACS code in the unresolved resonance region from 2 keV to 1 MeV. The contributions of partial waves \(l=0,1,2\) l = 0 , 1 , 2 to the average capture cross sections are reported.