原子能科学技术2018，Vol.52Issue(2)：215-220,6.DOI:10.7538/yzk.2017.youxian.0258
252Cf裂变γ射线伴随飞行时间法刻度液体闪烁体中子探测效率
Calibration of Neutron Detection Efficiency for Liquid Scintillator with 252Cf Fission Gamma Ray and Time-of-Flight Method
任杰 1聂阳波 1阮锡超 1黄翰雄 1李霞 1张凯1
作者信息
- 1. 中国原子能科学研究院 核数据重点实验室,北京 102413
- 折叠
摘要
Abstract
The benchmark experiment is one of the important experiment methods for verifying the nuclear data.Liquid scintillator detector is the main detector used in the neutron nuclear data benchmark experiments,and the accuracy of the experiment results is affected by the precision of the detection efficiency of the detector directly.Using time-of-flight method and a 252 Cf neutron source, the neutron relative detection efficiency curve of the liquid scintillator was measured in 2.0-10.0 MeV energy region.And the absolute detection efficiency of mono-energetic neutrons was also measured at 2.9 MeV with the time-of-flight method and the d-D reaction neutron source.After normalizing the relative detection efficiency curve to the absolute detection efficiency at 2.9 MeV,the absolute detection efficiency curve in this energy region was obtained.The calibrated detection efficiency of the liquid scintillator was also compared with the calculation result of the Monte-Carlo code NEFF,and good agreement was obtained.关键词
探测效率/液体闪烁体/飞行时间法/蒙特卡罗模拟Key words
detection efficiency/liquid scintillator/time-of-flight method/Monte-Carlo simulation分类
数理科学引用本文复制引用
任杰,聂阳波,阮锡超,黄翰雄,李霞,张凯..252Cf裂变γ射线伴随飞行时间法刻度液体闪烁体中子探测效率[J].原子能科学技术,2018,52(2):215-220,6.
