Abstract
The relative differential cross sections of the \(^{1}\hbox {H}(n, \,el)\) reaction have been measured at the China Spallation Neutron Source (CSNS) Back-n white neutron source. A low-density polyethylene sample and a graphite foil were prepared for the foreground and background measurements, respectively. The charged particles were detected using the \({\vartriangle }E-E\) telescope array of the Light-charged Particle Detector Array (LPDA) system. With 10 \({\vartriangle }E-E\) telescopes, the relative differential cross sections of the \(^{1}\hbox {H}(n, \,el)\) reaction were obtained from 70\(^{\circ }\) to 160\(^{\circ }\) in the center-of-mass system in the neutron energy (\(E_{\mathrm{n}}\)) range from 6.14 to 52.48 MeV (23 energy points). The present work was the first experiment using the \({\vartriangle }E-E\) telescope array of the LPDA system at CSNS. The present results are in good agreement with previous measurements, evaluations and theoretical calculations. Furthermore, this work is the first measurement in the 6.52 MeV \(\le E_{\mathrm{n}} \le \) 9.09 MeV, 10.57 MeV \(\le E_{\mathrm{n}} \le \) 12.43 MeV, and 18.05 MeV \(\le \) \(E_{\mathrm{n}} \le \) 20.05 MeV regions.
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Data Availability Statement
This manuscript has associated data in a data repository [Authors’ comment: The final results have been presented in Appendix A in this paper. The origin data (\(\sim \)1 TB, mainly signal files) are too big to upload or deliver them.]
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Acknowledgements
The authors are indebted to the operation crew of the CSNS Back-n white neutron source. Prof. Zhenpeng Chen from Tsinghua University is appreciated for beneficial discussions. The present work is financially supported by the National Key R&D Program of China (No. 2016YFA0401604) and the National Natural Science Foundation of China (No. 11775006).
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Communicated by Navin Alahari.
Haoyu Jiang and Wei Jiang contributed equally to this work.
Appendix A: Results of the relative differential cross sections of the \(^{1} \hbox {H}(n,\,el)\) reaction
Appendix A: Results of the relative differential cross sections of the \(^{1} \hbox {H}(n,\,el)\) reaction
The present relative differential cross sections of the \(^{1}\hbox {H}(n, \,el)\) reaction compared with existing results of evaluations [8], measurements since 1960 [29] and recent SM-16 and WF-16 theoretical calculations [9, 62]. The relative cross sections have been multiplied by a normalizing coefficient using the data from the JENDL-4.0/HE-2015 library [24] as standard
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Jiang, H., Jiang, W., Cui, Z. et al. Measurement of the relative differential cross sections of the \(^{1} H(n,el)\) reaction in the neutron energy range from 6 MeV to 52 MeV. Eur. Phys. J. A 57, 6 (2021). https://doi.org/10.1140/epja/s10050-020-00313-7
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DOI: https://doi.org/10.1140/epja/s10050-020-00313-7