Open AccessCross section measurement of neutron capture reaction based on back-streaming white neutron source at China spallation neutron source
Author(s) -
Qiwei Zhang,
Luan Guang-Yuan,
Jie Ren,
Xichao Ruan,
Guangzhi He,
Jie Bao,
Qi Sun,
Hanxiong Huang,
Zhaohui Wang,
Min Gu,
Tao Yu,
Xie Li-Kun,
Yonghao Chen,
Qi An,
Bai Huai-Yong,
Yu Bao,
Ping Cao,
Haolei Chen,
Qiping Chen,
Yukai Chen,
Zhen Chen,
Zengqi Cui,
Ruirui Fan,
C. Q. Feng,
Keqing Gao,
Changcai Han,
Zijie Han,
Yongcheng He,
Hong Yang,
Weiling Huang,
Huang Xi-Ru,
Ji Xiao-Lu,
Ji Xu-Yang,
Wei Jiang,
Haoyu Jiang,
Zhijie Jiang,
Hantao Jing,
Lihua Kang,
Mingtao Kang,
Bo Li,
Chao Li,
Jiawen Li,
Lun Li,
Qiang Li,
Li Xiao,
Yang Li,
Rong Liu,
Shubin Liu,
Xingyan Liu,
Qili Mu,
Changjun Ning,
Qi Bin-Bin,
Zhongzhou Ren,
Song Ying-Peng,
Song Zhang,
Hong-xiang Sun,
Kai Sun,
Sun Xiao-Yang,
ZhiWei Sun,
Zhixin Tan,
Hongqing Tang,
Jingyu Tang,
Xinyi Tang,
Binbin Tian,
Lijiao Wang,
Pengcheng Wang,
Qi Wang,
Taofeng Wang,
Jie Wen,
Zhengqi Wen,
Wu Qing-Biao,
Xiaofeng Wu,
Xuan Wu,
Yiwei Yang,
Yujie Han,
Lei Yu,
Yongji Yu,
Guohui Zhang,
Linhao Zhang,
Xianpeng Zhang,
Yuliang Zhang,
Zhiyong Zhang,
Yongtao Zhao,
Lei Zhou,
Zhou Zu-Ying,
Dan Zhu,
Zhu Ke-Jun,
Ping Zhu,
Zhu Xing-Hua
Publication year - 2021
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.70.20210742
Subject(s) - spallation neutron source , neutron source , neutron , nuclear physics , neutron detection , neutron cross section , physics , neutron capture , nuclear data , spallation , nuclear reaction , neutron temperature
The data of neutron capture cross section are very important for the research of nuclear astrophysics, advanced nuclear energy development. Owing to the limitation of neutron source and detector, the experimental data of neutron capture cross section in an energy range of 1 eV–10 keV were almost blank in China. The first Chinese gamma-ray total absorption facility has been constructed in the key laboratory of nuclear data at China institute of atomic energy, which consists of 40 BaF 2 detector units. The BaF 2 crystal shell with a thickness of 15 cm and an inner radius of 10 cm covers 95.2% of the solid angle. On-line measurement method of neutron capture reaction cross section is established on the back-streaming white neutron source of China spallation neutron source by using the upgraded facility. The cross section of 197 Au neutron capture reaction is measured for the first time under the experimental condition of irregular 30 mm neutron beam spot. The measured position of resonance peak is well consistent with the relevant data of ENDF evaluation database, which verifies the reliability of the measurement device and measurement technology, and thus laying the foundation for the acquisition of high precision cross section in future.