Eur. Phys. J. A (2021) 57: 6
https://doi.org/10.1140/epja/s10050-020-00313-7

Regular Article – Experimental Physics

Measurement of the relative differential cross sections of the reaction in the neutron energy range from 6 MeV to 52 MeV

¹ State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, 100871, Beijing, China
² Institute of High Energy Physics, Chinese Academy of Sciences (CAS), 100049, Beijing, China
³ Spallation Neutron Source Science Center, 523803, Dongguan, China
⁴ State Key Laboratory of Particle Detection and Electronics, Beijing, China
⁵ University of Chinese Academy of Sciences, 100049, Beijing, China
⁶ Department of Modern Physics, University of Science and Technology of China, 230026, Hefei, China
⁷ Key Laboratory of Nuclear Data, China Institute of Atomic Energy, 102413, Beijing, China
⁸ Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, 621900, Mianyang, China
⁹ Northwest Institute of Nuclear Technology, 710024, Xi’an, China
¹⁰ Department of Engineering and Applied Physics, University of Science and Technology of China, 230026, Hefei, China
¹¹ School of Physics, Beihang University, 100083, Beijing, China

^d guohuizhang@pku.edu.cn

Received: 29 July 2020
Accepted: 22 November 2020
Published online: 3 January 2021

Abstract

The relative differential cross sections of the 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 telescope array of the Light-charged Particle Detector Array (LPDA) system. With 10 telescopes, the relative differential cross sections of the reaction were obtained from 70 to 160 in the center-of-mass system in the neutron energy () range from 6.14 to 52.48 MeV (23 energy points). The present work was the first experiment using the 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 9.09 MeV, 10.57 MeV 12.43 MeV, and 18.05 MeV 20.05 MeV regions.