Thermoluminescence dosimeter cards purchased by the US Navy in recent years have different radiation sensitivities, e.g., they exhibit a different amount of light per dose unit. Presented tests indicate that the optical transparency of the Teflon encapsulation is partially responsible for the significant variation of the DT-702/PD radiation sensitivity. It was confirmed also that the Teflon transparency is in fact a primary cause of the radiation sensitivity increase in the most recently produced dosimetric cards. This conclusion is based on the correlation found between the calibrated radiation sensitivity of the dosimeter card element and the optical transparency of its Teflon encapsulation. The transparency measurements were performed at the wavelength of 400 nm within a 10 nm spectral interval effectively covering the spectral range of the thermoluminescence. It is anticipated that the experimentally determined correlation will help to approve the acceptance of new thermoluminescence dosimeter cards in the Naval Dosimetry Center inventory as well as improve the production process.

中文翻译：

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Teflon 透射率对热释光剂量计卡灵敏度的影响。

美国海军近年来购买的热释光剂量计卡具有不同的辐射敏感性，例如，它们在每个剂量单位中表现出不同的光量。所提供的测试表明，Teflon 封装的光学透明度是造成 DT-702/PD 辐射灵敏度显着变化的部分原因。还证实，Teflon 透明度实际上是最近生产的剂量卡中辐射灵敏度增加的主要原因。该结论基于剂量计卡元件的校准辐射灵敏度与其特氟隆封装的光学透明度之间的相关性。在有效覆盖热释光光谱范围的 10 nm 光谱间隔内，在 400 nm 波长下进行透明度测量。预计实验确定的相关性将有助于批准在海军剂量学中心库存中接受新的热释光剂量计卡，并改进生产过程。