摘要
使用标准的Monte-Carlo程序计算了几种闪烁中子探测器的效率曲线,同时又用 ̄(252)Cf自发裂变中子源中子对效率曲线的低能部分进行了实验刻度。通过实验值对计算值归一把刻度点与计算曲线结合起来,按照实验点的走向修正了计算效率曲线的近阈部分。文章着重叙述实验刻度的技术。
The efficiency curves of several scintillation neutron detectors are experimentally calibratedwith  ̄(252)Cf spontaneous fission neutrons at the low energy range and theoretically calculated with acode NEFF4.The relative efficiency curves obtained with experimental calibrations are normali- zed and connected to the calculations. The calculated efficiency curves are corrected according tothe trends of the experimental points near the thresholds.The paper will mainly describe the tech-nique of the experimental calibrations.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
1994年第2期133-139,共7页
Atomic Energy Science and Technology
关键词
中子探测器
效率曲线
裂变中子谱
Neutron detector Efficiency curve Fission neutron spectrum