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首页> 外文期刊>Radiation Protection Dosimetry >A NEW GENERATION OF PASSIVE RADON MONITORS: THE FILM-BADGES FOR OCCUPATIONAL EXPOSURES
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A NEW GENERATION OF PASSIVE RADON MONITORS: THE FILM-BADGES FOR OCCUPATIONAL EXPOSURES

机译：被动式RA气监测器的新生成：用于职业接触的胶卷

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摘要

The passive radon monitors are typically formed by a radon-diffusion chamber, enclosing a track detector or an electret. Recently, new passive Rn monitors have been developed, which are similar to the neutron film badges. These badges present unique characteristics for the assessment of the occupational exposure to radon, such as compactness, fast-time response and any desired response sensitivity. Finally, these badges make it very easy to stop and to start the measurements, as required for assessment of the occupational exposures, which operations are very difficult, if not impossible, to achieve with existing monitors. These radon badges are based on the radon sorption by solid materials, namely plastics for radon absorption and activated carbon cloths for radon adsorption. Plastics may have a rubber-like (e.g. silicone) or a glass-like morphology (e.g. polycarbonate). The most interesting materials for these applications are the glass-like solids, the properties of which are expected to be little dependent on temperature. If radon badges with a large response sensitivity are desired, then adsorptive radiators formed by thin layers of activated carbon tissues are used. The key strategy, adopted for the radon film badges, was to use radiators into which radon diffuses rapidly, in order to ensure a fast-time response for radon monitoring. All the Rn film-badges, listed above, are formed by the same very compact device and may have response sensitivities, which may differ by several orders of magnitude.
机译：被动式monitor监测器通常由a扩散室形成，该track扩散室围成轨道检测器或驻极体。最近，已经开发了新的无源Rn监视器，类似于中子胶片徽章。这些徽章为评估ra职业暴露提供了独特的特征，例如紧凑性，快速响应和任何所需的响应敏感性。最后，这些徽章使评估和职业暴露所需的测量非常容易停止和开始，而使用现有的监测器很难（即使不是不可能）完成这些操作。这些ra标志是基于固体材料对ra的吸附，即用于for的塑料和用于ra的活性炭布。塑料可以具有橡胶状（例如硅树脂）或玻璃状形态（例如聚碳酸酯）。对于这些应用，最有趣的材料是玻璃状固体，其性质预计几乎不依赖于温度。如果需要具有高响应灵敏度的ra徽章，则使用由活性炭薄纸层形成的吸附辐射体。 ra膜徽章采用的关键策略是使用radiator扩散迅速的辐射器，以确保对monitoring监测的快速响应。上面列出的所有Rn膜徽章均由相同的非常紧凑的设备形成，并且可能具有响应灵敏度，该灵敏度可能相差几个数量级。

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