Evaluations and calculations of neutron reactions on 238U up to 20 MeV

Yue Zhang; Ruirui Xu; Yuan Tian; Haicheng Wu; Xichao Ruan; Yinlu Han; Huanyu Zhang; Ping Liu; Xi Tao; Zhi Zhang; Changlin Lan; Xiaodong Sun; Yongli Jin; Nengchuan Shu; Jimin Wang; Xiaolong Huang; Zhigang Ge

Nuclear Engineering and Technology (Feb 2025)

Evaluations and calculations of neutron reactions on 238U up to 20 MeV

Yue Zhang,
Ruirui Xu,
Yuan Tian,
Haicheng Wu,
Xichao Ruan,
Yinlu Han,
Huanyu Zhang,
Ping Liu,
Xi Tao,
Zhi Zhang,
Changlin Lan,
Xiaodong Sun,
Yongli Jin,
Nengchuan Shu,
Jimin Wang,
Xiaolong Huang,
Zhigang Ge

Affiliations

Yue Zhang: China Nuclear Data Center, China Institute of Atomic Energy, Beijing, 102413, China; Corresponding author.
Ruirui Xu: China Nuclear Data Center, China Institute of Atomic Energy, Beijing, 102413, China; Corresponding author.
Yuan Tian: China Nuclear Data Center, China Institute of Atomic Energy, Beijing, 102413, China
Haicheng Wu: China Nuclear Data Center, China Institute of Atomic Energy, Beijing, 102413, China
Xichao Ruan: China Nuclear Data Center, China Institute of Atomic Energy, Beijing, 102413, China
Yinlu Han: China Nuclear Data Center, China Institute of Atomic Energy, Beijing, 102413, China
Huanyu Zhang: China Nuclear Data Center, China Institute of Atomic Energy, Beijing, 102413, China
Ping Liu: China Nuclear Data Center, China Institute of Atomic Energy, Beijing, 102413, China
Xi Tao: China Nuclear Data Center, China Institute of Atomic Energy, Beijing, 102413, China
Zhi Zhang: China Nuclear Data Center, China Institute of Atomic Energy, Beijing, 102413, China
Changlin Lan: School of Nuclear Science and Technology, Lanzhou University, Lanzhou, 730000, China
Xiaodong Sun: China Nuclear Data Center, China Institute of Atomic Energy, Beijing, 102413, China
Yongli Jin: China Nuclear Data Center, China Institute of Atomic Energy, Beijing, 102413, China
Nengchuan Shu: China Nuclear Data Center, China Institute of Atomic Energy, Beijing, 102413, China
Jimin Wang: China Nuclear Data Center, China Institute of Atomic Energy, Beijing, 102413, China
Xiaolong Huang: China Nuclear Data Center, China Institute of Atomic Energy, Beijing, 102413, China
Zhigang Ge: China Nuclear Data Center, China Institute of Atomic Energy, Beijing, 102413, China

Journal volume & issue: Vol. 57, no. 2
p. 103190

Abstract

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In order to improve the quality of neutron data for 238U in CENDL, considering the impact of new measurements, a brand-new evaluation of the complete set of neutron induced 238U reaction data up to 20 MeV has been performed. Important reactions, such as (n,tot), (n,γ), (n,f), (n,2n) and (n,3n) reaction cross sections and average number of fission neutrons have been evaluated based on experimental data analysis. Also, using existing optical model potential parameters, new theoretical calculations based on Hauser-Feshbach and pre-equilibrium model have been carried out. Resonance parameters and prompt fission neutron spectrum from ENDF/B-VIII.0 have been adopted. Guided by integral benchmark, (n,inl), (n,γ) and (n,f) reaction cross sections have undergone multiple adjustments, leading to a noticeable improvement in data quality, as indicated by final benchmark results.

Published in Nuclear Engineering and Technology

ISSN: 1738-5733 (Print)
Publisher: Elsevier
Country of publisher: Korea, Republic of
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Nuclear engineering. Atomic power
Website: http://www.journals.elsevier.com/nuclear-engineering-and-technology

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