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使用多电极比例计数器标准化Rn-222度

Rio Furukawa¹, Miroslaw Janik², Satoshi Kodaira²

¹National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, 1-1-1 Umezono, Tsukuba, Ibaraki, Japan.

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine

|October 23, 2023

概括

日本正在开发一个多电极比例计数器 (MEPC),作为气态-222 (Rn) 度的主要标准. 本研究报告了其性能,包括不确定性和电场扭曲补偿,这对于精确的监测至关重要.

科学领域:

辐射计量学辐射计量学
环境科学环境科学
核仪器仪表核仪器仪表核仪器仪表

背景情况:

精确测量气态-222 (²²²Rn) 度对于辐射保护和环境监测至关重要.
现有的初级标准需要不断开发以提高准确性和可靠性.

研究的目的:

报告多电极比例计数器 (MEPC) 的概念和性能评估,作为Rn.222的主要标准.
建立一个强大的标准化Rn度的系统.
为子监测器引入一个校准系统.

主要方法:

开发和测试用于Rn标准化的多电极比例计数器 (MEPC).
评估与MEPC测量相关的不确定性预算.
在MEPC中,用于电场扭曲的补偿技术.
集成基于电离室的气体循环系统进行校准.

主要成果:

已经建立了MEPC测量的初步不确定性预算.
研究了MEPC中电场扭曲补偿的方法.
一个基于电离室的气体循环系统用于校准子监测器.

结论:

多电极比例计数器 (MEPC) 显示出作为气体Rn.的主要标准的承诺.
性能评估,包括不确定性分析和电场校正,对于其验证至关重要.
开发的系统有助于对环境空气中的子监测器进行准确的校准.

关键词:

活动活动活动.阿尔法光谱法是指阿尔法光谱法.电离室的电离室一个比例的反器.((222) Rn) 和它的衰变产品.标准化标准化标准化

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