https://doi.org/10.1140/epja/s10050-023-01126-0
Regular Article - Experimental Physics
Determination of the 
cross section from 10 to 200 keV at the Back-n facility at CSNS
1
Key Laboratory of Nuclear Data, China Institute of Atomic Energy, 102413, Beijing, China
2
Institute of High Energy Physics, Chinese Academy of Sciences (CAS), 102413, Beijing, China
3
Spallation Neutron Source Science Center, 523803, Dongguan, China
4
Shanghai Institute of Applied Physics, Chinese Academy of Sciences, 201800, Shanghai, China
5
State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, 230026, Hefei, China
6
Department of Modern Physics, University of Science and Technology of China, 230026, Hefei, China
7
State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, 102413, Beijing, China
8
Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, 621900, Mianyang, China
9
School of Nuclear Science and Technology, University of Science and Technology of China, 230026, Hefei, China
10
USTC Archaeometry Lab, University of Science and Technology of China, 230026, Hefei, China
11
State Key Laboratory of Particle Detection and Electronics, Institute of High Energy Physics Chinese Academy of Sciences, 102413, Beijing, China
12
Northwest Institute of Nuclear Technology, 710024, Xi’an, China
13
University of Chinese Academy of Sciences, 102413, Beijing, China
Received:
6
May
2023
Accepted:
13
September
2023
Published online:
5
October
2023
The neutron capture cross section of 
has been measured with the time-of-flight technique in the energy range from 10 to 200 keV at the back-streaming white neutron beam-line (Back-n) of China Spallation Neutron Source (CSNS). The pulse height weighting technique (PHWT) was applied with four C
D liquid scintillators to measure the prompt gamma-ray energy release following neutron capture. The measurement data, corrected with the PHWT, have been normalized to the saturated resonances at 21.8 eV. The background was determined by a lead sample measurement and detailed Monte Carlo simulations. The average cross sections have been determined relative to the 
reaction cross sections. The results are consistent with the evaluation values of CENDL-3.2 and JENDL-5. The total uncertainties, including the PHWT, normalization, background subtraction, corrections, and relative measurement, are in the range of 4.5–4.8%.
Wang Jincheng and Jie Ren contributed equally to this work.
Copyright comment Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
