Abstract
The neutron-induced total cross sections of natural lead have been measured in a wide energy range (0.3 eV–20 MeV) on the back-streaming white neutron beamline (Back-n) at the China Spallation Neutron Source. Neutron energy was determined by the neutron total cross-section spectrometer using the time-of-flight technique. A fast multi-cell fission chamber was used as the neutron detector, and a 10-mm-thick high-purity natural lead sample was employed for the neutron transmission measurements. The on-beam background was determined using Co, In, Ag, and Cd filters. The excitation function of \(^\text {nat}\)Pb(n, tot) reaction below 20 MeV was calculated using the TALYS-1.96 nuclear-reaction modeling program. The present results were compared with previous results, the evaluated data available in the five major evaluated nuclear data libraries (i.e., ENDF/B-VIII.0, JEFF-3.3, JENDL-5, CENDL-3.2, and BROND-3.1), and the theoretical calculation curve. Good agreement was found between the new results and those of previous experiments and with the theoretical curves in the corresponding region. This measurement obtained the neutron total cross section of natural lead with good accuracy over a wide energy range and added experimental data in the resonance energy range. This provides more reliable experimental data for nuclear engineering design and nuclear data evaluation of lead.
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Data Availability Statement
The data that support the findings of this study are openly available in Science Data Bank at https://cstr.cn/31253.11.sciencedb.j00186.00349 and https://doi.org/10.57760/sciencedb.j00186.00349.
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Acknowledgements
The authors would like to thank the operating crew of the CSNS for providing a stable neutron beam for the measurements.
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All authors contributed to the study conception and design. Material preparation, data collection, and analysis were performed by J-MX, SF, Y-HC, HY, MX, P-JC, X-XL, RL, Y-WY, WL, and BZ. Experiment was performed by J-MX, SF, Y-HC, MX, D-JZ H-QW, and L-XT. The first draft of the manuscript was written by J-MX and revised by SF and Y-HC. All authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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This work is supported by the National Natural Science Foundation of China (No. 12375296), the Key Laboratory of Nuclear Data Foundation (No. JCKY2022201C153), the Natural Science Foundation of Hunan Province of China (Nos. 2021JJ40444, 2020RC3054), the Youth Innovation Promotion Association CAS (No. 2023014), and the National Key Research and Development Plan (No. 2022YFA1603303).
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Xue, JM., Feng, S., Chen, YH. et al. Measurement of the neutron-induced total cross sections of \(^\text {nat}\)Pb from 0.3 eV to 20 MeV on the Back-n at CSNS. NUCL SCI TECH 35, 18 (2024). https://doi.org/10.1007/s41365-024-01370-z
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DOI: https://doi.org/10.1007/s41365-024-01370-z