摘要
环境本底的NaI(Tl)γ能谱经积分计数归一化处理后,能一定程度地抑制本底涨落和低水平天然放射源对探查监测的干扰,较好地识别人工放射性,并降低数据的相对误差。论文提出了一种基于多路计数比值法的低水平人工γ辐射探查报警算法,探讨其实现的条件,并通过实验和数据分析验证其优越性。利用该法能快速有效地在环境本底中区分出人工γ辐射,同时一定程度地降低误警率和漏报率。
The distribution of integral counts on background gamma spectrum shows ability to restrain the interference in radiation detection, which is from background fluctuation and low - level natural radioactivity. It also can distinguish artificial radioactivity from environmental radiation background and reduce relative error effectively. Based on this characteristic, the article advances a new method named Multi - channel Counts Ratio to detect low - level radiation in the environment, and then discusses the conditions of application and its advantages in the measurement through experiment and data analysis. Gamma radiation detection with this method is capable of differentiating artificial radiation from natural background rapidly, and reducing false alarm rate and fail alarm rate with certain degree at the same time.
出处
《核电子学与探测技术》
CAS
CSCD
北大核心
2013年第6期758-762,共5页
Nuclear Electronics & Detection Technology
基金
国家自然科学基金项目(51005242)
关键词
辐射监测
低水平人工γ辐射
多路计数比值法
补偿计数
radiation detection
low - level artificial gamma radiation
Multi - Channel Counts Ratio method
compensation count
作者简介
左传友（1967-），男，河北固安人，高工，本科，从事核安全管理工作。
