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ICARE Radon Calibration Device

机译:ICARE Calibration校准装置

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摘要

An aerodynamic calibration device called ICARE is briefly described. ICARE is currently being used at the Nuclear Research Center of Saclay in France for the certification of instruments employed in measurement of artificial radioactive particulate airborne contamination. ICARE is essentially a blower. Aerosols calibrated in size and labelled with 137Cs or 239Pu are injected in the mainstream of the blower upstream of the test section.To extend ICARE’s field of application to the case of instruments employed in measurement of 222Rn and of its decay products, a new line of injection has been designed and is under construction, in the frame of a contract financed by the European Community Commission. The main effort is presently oriented to-ward the development of a reliable 222Rn source, based on a solid deposit of 226Ra on organic fibers, and of a reference method for the measurement of 222Rn activity per unit volume of air. This reference is based on a modified version of standard containers being used in the French reference method for calibrated measurements of 133Xe and 85Kr by gamma spectroscopy.
机译:简要介绍了一种称为ICARE的空气动力学校准装置。目前,法国萨克雷核研究中心正在使用ICARE来认证用于测量人工放射性微粒空气传播污染物的仪器。 ICARE本质上是鼓风机。尺寸经过校准并标记有 137 Cs或 239 Pu的气雾剂被注入到测试部分上游鼓风机的主流中。将ICARE的应用领域扩展到用于测量 222 Rn及其衰变产物的仪器,在欧洲共同体委员会资助的合同框架内,已经设计并正在建造一条新的注入线。目前的主要工作是基于在有机纤维上 226 Ra的固体沉积物,开发可靠的 222 Rn源,以及一种参考方法。单位体积空气中 222 Rn活性的测量。该参考文献基于法国参考文献方法中使用的标准容器的改进版本,用于通过伽马光谱法对 133 Xe和 85 Kr进行校准测量。

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