Measurements of differential and angle-integrated cross sections for the $^{10}$B($n, α$)$^{7}$Li reaction in the neutron energy range from 1.0 eV to 2.5 MeV
Creators: name: Jiang, Haoyu
name: Jiang, Wei
name: Bai, Huaiyong
name: Cui, Zengqi
name: Zhang, Guohui
name: Fan, Ruirui
name: Yi, Han
name: Ning, Changjun
name: Zhou, Liang
name: Tang, Jingyu
name: An, Qi
name: Bao, Jie
name: Bao, Yu
name: Cao, Ping
name: Chen, Haolei
name: Chen, Qiping
name: Chen, Yonghao
name: Chen, Yukai
name: Chen, Zhen
name: Feng, Changqing
name: Gao, Keqing
name: Gu, Minhao
name: Han, Changcai
name: Han, Zijie
name: He, Guozhu
name: He, Yongcheng
name: Hong, Yang
name: Huang, Hanxiong
name: Huang, Weiling
name: Huang, Xiru
name: Ji, Xiaolu
name: Ji, Xuyang
name: Jiang, Zhijie
name: Jing, Hantao
name: Kang, Ling
name: Kang, Mingtao
name: Li, Bo
name: Li, Chao
name: Li, Jiawen
name: Li, Lun
name: Li, Qiang
name: Li, Xiao
name: Li, Yang
name: Liu, Rong
name: Liu, Shubin
name: Liu, Xingyan
name: Luan, Guangyuan
name: Mu, Qili
name: Qi, Binbin
name: Ren, Jie
name: Ren, Zhizhou
name: Ruan, Xichao
name: Song, Zhaohui
name: Song, Yingpeng
name: Sun, Hong
name: Sun, Kang
name: Sun, Xiaoyang
name: Sun, Zhijia
name: Tan, Zhixin
name: Tang, Hongqing
name: Tang, Xinyi
name: Tian, Binbin
name: Wang, Lijiao
name: Wang, Pengcheng
name: Wang, Qi
name: Wang, Taofeng
name: Wang, Zhaohui
name: Wen, Jie
name: Wen, Zhongwei
name: Wu, Qingbiao
name: Wu, Xiaoguang
name: Wu, Xuan
name: Xie, Likun
name: Yang, Yiwei
name: Yu, Li
name: Yu, Tao
name: Yu, Yongji
name: Zhang, Linhao
name: Zhang, Qiwei
name: Zhang, Xianpeng
name: Zhang, Yuliang
name: Zhang, Zhiyong
name: Zhao, Yubin
name: Zhou, Luping
name: Zhou, Zuying
name: Zhu, Danyang
name: Zhu, Kejun
name: Zhu, Peng
Publisher: name: arXiv
Year: 2019
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: Differential and angle-integrated cross sections for the $^{10}$B($n, α$)$^{7}$Li, $^{10}$B($n, α$$_{0}$)$^{7}$Li and $^{10}$B($n, α$$_{1}$)$^{7}$Li$^{*}$ reactions have been measured at CSNS Back-n white neutron source. Two enriched (90%) $^{10}$B samples 5.0 cm in diameter and ~85.0 $μ$g/cm$^{2}$ in thickness each with an aluminum backing were prepared, and back-to-back mounted at the sample holder. The charged particles were detected using the silicon-detector array of the Light-charged Particle Detector Array (LPDA) system. The neutron energy E$_{n}$ was determined by TOF (time-of-flight) method, and the valid $α$ events were extracted from the E$_{n}$-Amplitude two-dimensional spectrum. With 15 silicon detectors, the differential cross sections of $α$-particles were measured from 19.2° to 160.8°. Fitted with the Legendre polynomial series, the ($n, α$) cross sections were obtained through integration. The absolute cross sections were normalized using the standard cross sections of the $^{10}$B($n, α$)$^{7}$Li reaction in the 0.3 - 0.5 MeV neutron energy region. The measurement neutron energy range for the $^{10}$B($n, α$)$^{7}$Li reaction is 1.0 eV $\le$ En &lt; 2.5 MeV (67 energy points), and for the $^{10}$B($n, α$$_{0}$)$^{7}$Li and $^{10}$B($n, α$$_{1}$)$^{7}$Li$^{*}$ reactions is 1.0 eV $\le$ En &lt; 1.0 MeV (59 energy points). The present results have been analyzed by the resonance reaction mechanism and the level structure of the $^{11}$B compound system, and compared with existing measurements and evaluations.
description: 19 pages, 34 figures, to be published in Chinese Physics C