Measurement of <sup>134</sup>Xe(n,2n)<sup>133m,g</sup>Xe reaction cross-sections in 14-MeV region with detailed uncertainty quantification

Jun-Hua Luo; Jun-Cheng Liang; Li Jiang; Fei Tuo; Liang Zhou; Long He

doi:10.1007/s41365-022-01158-z

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Measurement of ¹³⁴Xe(n,2n)^133m,gXe reaction cross-sections in 14-MeV region with detailed uncertainty quantification

NUCLEAR PHYSICS AND INTERDISCIPLINARY RESEARCH | Updated：2023-02-13

- Measurement of ¹³⁴Xe(n,2n)^133m,gXe reaction cross-sections in 14-MeV region with detailed uncertainty quantification
- Nuclear Science and Techniques Vol. 34, Issue 1, Article number: 4(2023)
- Affiliations：
  
  1.Institute of New Energy, Hexi University, Zhangye 734000, China
  2.School of Physics and Electromechanical Engineering, Hexi University, Zhangye 734000, China
  3.National Institute of Metrology, Beijing 100029, China
  4.Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, China
  5.National Institute for Radiological Protection, China CDC, Beijing 100088, China
- Author bio：
  
  * luojh71@163.com
- Funds：
- DOI：10.1007/s41365-022-01158-z
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Jun-Hua Luo, Jun-Cheng Liang, Li Jiang, et al. Measurement of ¹³⁴Xe(n,2n)^133m,gXe reaction cross-sections in 14-MeV region with detailed uncertainty quantification. [J]. Nuclear Science and Techniques 34(1):4(2023)
DOI：

Jun-Hua Luo, Jun-Cheng Liang, Li Jiang, et al. Measurement of ¹³⁴Xe(n,2n)^133m,gXe reaction cross-sections in 14-MeV region with detailed uncertainty quantification. [J]. Nuclear Science and Techniques 34(1):4(2023) DOI： 10.1007/s41365-022-01158-z.

摘要

Abstract

A lead-shielded HPGe detector and offline γ–ray spectra of the residual product were used to measure the cross-section (CS) and ratios of isomeric CS (σ,m,/σ,g,) in ,134,Xe(n,2n),133m,g,Xe reactions at different energies (13.5 MeV, 13.8 MeV, 14.1 MeV, 14.4 MeV, 14.8 MeV) relative to the ,93,Nb(n,2n),92m,Nb reaction CS. The target was high-purity natural Xe gas under high pressure. The T(d,n),4,He reaction produces neutrons. TALYS code (version 1.95) for nuclear reactions was used for calculations, with default parameters and nuclear level density models. The uncertainties in the measured CS data were thoroughly analyzed using the covariance analysis method. The results were compared with theoretical values, evaluation data, and previous experimental findings. CS data of the ,134,Xe(n,2n),133m,Xe and, 134,Xe(n,2n),133g,Xe reactions and the corresponding isomeric CS ratios at 13.5 MeV, 13.8 MeV, and 14.1 MeV neutron energies are reported for the first time. This research advances our knowledge of pre-equilibrium emission in the (n,2n) reaction channel by resolving inconsistencies in the Xe data.

关键词

Keywords

134Xe (n2n) reactions14-MeV neutronsCross-sections (CSs)Isomeric ratios (IRs)Covariance analysis

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Measurement of 134Xe(n,2n)133m,gXe reaction cross-sections in 14-MeV region with detailed uncertainty quantification

DOI：10.1007/s41365-022-01158-z

摘要

Abstract

关键词

Keywords

references

Measurement of ¹³⁴Xe(n,2n)^133m,gXe reaction cross-sections in 14-MeV region with detailed uncertainty quantification