On the techniques for primary calibration of electronic radon detectors

IF 1.8 3区工程技术 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Applied Radiation and Isotopes Pub Date : 2025-09-25 DOI:10.1016/j.apradiso.2025.112209

K. Mitev , B. Sabot , V. Todorov , S. Georgiev , S. Pierre , S. Röttger , B. Krastev , I. Dimitrova

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引用次数: 0

Abstract

Successful calibration of RadonEye +2 electronic radon detectors was performed at typical indoor activity concentrations using the facilities at LNHB and PTB. The calibration uncertainties using primary radon activity standards were: below 1.5 % at 300 Bq/m³, below 1.7 % at 130 Bq/m³ and below 2.5 % at 55 Bq/m³ (k = 1). When using the secondary standard AlphaGUARD, the uncertainty at 55 Bq/m³ was below 3.5 %. Maintaining stable activity concentrations proved crucial and appears to be the only feasible approach for calibrations below 100 Bq/m³. While calibration under exponentially decaying radon activity concentration remains useful for evaluating the devices’ linearity across a broad range, it proved unsuitable for calibration of user-grade monitors at low activities due to the high statistical variation in their signal.

The linearity of RadonEye +2 was demonstrated in the range 50 Bq/m³ - 300 Bq/m³ and they will be utilized for the sensor networks developed within the RadonNET project. Dynamic background correction, applicable to non-spectrometric detectors, was applied based on the monitor's exposure history. Furthermore, it was observed that the pulse-processing algorithm of RadonEyes +2 distorts the Poisson distribution of the signal, thereby increasing its variation. Potentially, lower measurement uncertainty could be achieved with electronic radon detectors that report the registered pulses and allow access to their processing algorithms.

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电子氡探测器初定技术研究

利用LNHB和PTB的设施，在典型的室内活动浓度下成功校准了RadonEye +2电子氡探测器。使用主要氡活度标准的校准不确定度为：300 Bq/m3时低于1.5%，130 Bq/m3时低于1.7%，55 Bq/m3时低于2.5% （k = 1）。当使用二级标准AlphaGUARD时，55 Bq/m3的不确定度低于3.5%。保持稳定的活性浓度被证明是至关重要的，并且似乎是低于100 Bq/m3的校准的唯一可行方法。虽然在指数衰减的氡活度浓度下进行校准对于在大范围内评估设备的线性度仍然有用，但由于其信号的高统计变化，它被证明不适用于在低活度下校准用户级监测器。RadonEye +2的线性度在50 Bq/m3 - 300 Bq/m3范围内进行了演示，它们将用于RadonNET项目开发的传感器网络。动态背景校正，适用于非光谱探测器，应用基于监视器的曝光历史。此外，RadonEyes +2的脉冲处理算法会扭曲信号的泊松分布，从而增加信号的变化。电子氡探测器可以报告所记录的脉冲并允许访问其处理算法，从而潜在地降低测量不确定度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Radiation and Isotopes 工程技术-核科学技术

CiteScore

3.00

自引率

12.50%

发文量

406

审稿时长

13.5 months

期刊介绍： Applied Radiation and Isotopes provides a high quality medium for the publication of substantial, original and scientific and technological papers on the development and peaceful application of nuclear, radiation and radionuclide techniques in chemistry, physics, biochemistry, biology, medicine, security, engineering and in the earth, planetary and environmental sciences, all including dosimetry. Nuclear techniques are defined in the broadest sense and both experimental and theoretical papers are welcome. They include the development and use of α- and β-particles, X-rays and γ-rays, neutrons and other nuclear particles and radiations from all sources, including radionuclides, synchrotron sources, cyclotrons and reactors and from the natural environment. The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria. Papers dealing with radiation processing, i.e., where radiation is used to bring about a biological, chemical or physical change in a material, should be directed to our sister journal Radiation Physics and Chemistry.