γ辐射剂量率监测方法比较分析

Comparative Analysis ofγRadiation Dose Rate Monitoring Methods

本文通过使用便携式γ辐射剂量率仪即时测量、辐射环境自动监测站自动连续测量、热释光测量系统累积剂量测量、通过土壤中放射性核素间接推算四种监测方法测量γ辐射剂量率,并比较分析测量结果,探讨分析不同方法差异性的原因。在稳定辐射场测量时,各方法测量结果基本一致。室外辐射环境水平测量时,各方法均未扣除宇宙射线响应时,自动连续测量值>累积剂量监测值>即时测量值>间接推算值(不含宇宙射线贡献),扣除宇宙射线响应后,间接推算值(不含宇宙射线贡献)>即时测量值。在辐射环境测量时,可互补使用四种方法以准确测定γ辐射水平。

To explore the impact effects of γ radiation dose rate measurement results using different measurement methods,analyse the differences between different methods,and explore the reasons.There are four monitoring methods of measuringγradiation dose rate:real-time measurement using a radiation dose rate meter,automatic continuous measurement using a radiation environment monitoring station,cumulative dose measurement using a thermoluminescence dosimetry measurement system,and indirect calculation of radioactive nuclides in soil γ Radiation dose rate.This article explores the use of portable devices and compare and analyze the measurement results.The results show that when all methods without deduct the cosmic ray response,the automatic continuous measurement value>cumulative dose monitoring value>immediate measurement value>indirect calculation value(excluding cosmic ray contribution).After deducting the cosmic ray response,the indirect calculation value(excluding cosmic ray contribution)>immediate measurement value.This experiment to some extent indicates comparability of using different measurement methods and equipment for conductingγradiation dose rate,providing reference for optimizing radiation environment measurement methods.