使用 NAI(TL)探测器对环境辐射监测站进行伽马能谱稳定。

GAMMA SPECTRUM STABILIZATION FOR ENVIRONMENTAL RADIATION MONITORING STATIONS USING NAI(TL) DETECTOR.

机构信息

Military Institute of Chemical and Environmental Engineering, Hoai Duc, Hanoi 100000, Vietnam.

Hanoi University of Science and Technology, 01 Dai Co Viet, Hanoi 100000, Vietnam.

出版信息

Radiat Prot Dosimetry. 2020 Jul 7;189(1):48-55. doi: 10.1093/rpd/ncaa011.

DOI:10.1093/rpd/ncaa011

PMID:32115653

Abstract

Gamma spectrum measured by an NaI(Tl) detector is known to be unstable with the in situ temperature. In the present work, an advanced method has been applied to stabilize the gamma spectrum measured by the NaI(Tl) detector at environmental radiation monitoring (ERM) stations. The method is based on experimental data obtained under controlled conditions in laboratory. In the temperature range from 4 to 45°C, the relative deviation of the peak positions within the stabilized gamma spectrum is less than 2%. To test this method in a real scenario, it has been integrated into the ERM station at the Military Institute of Chemical and Environmental Engineering in Hanoi, Vietnam. The results show that the proposed method is ready for a real application.

摘要

由碘化钠 (NaI(Tl)) 探测器测量的伽马能谱已知随现场温度而不稳定。在本工作中，应用了一种先进的方法来稳定环境辐射监测 (ERM) 站中 NaI(Tl) 探测器测量的伽马能谱。该方法基于在实验室控制条件下获得的实验数据。在 4 至 45°C 的温度范围内，稳定伽马能谱内的峰位置的相对偏差小于 2%。为了在真实场景中测试该方法，它已被集成到越南河内的化学与环境工程军事研究所的 ERM 站中。结果表明，所提出的方法已准备好进行实际应用。