Institut de Radioprotection et de Sûreté Nucléaire, Fontenay-aux-Roses, France.
Department of Environment and Biodiversity, Paris-Lodron-University of Salzburg, Salzburg, Austria.
Front Public Health. 2022 Sep 15;10:969330. doi: 10.3389/fpubh.2022.969330. eCollection 2022.
Screen protector glasses are often used to protect the display screen surface of mobile phones against physical damage. Their dosimetric properties were recently studied by thermoluminescence with the aim of using these items as potential emergency dosimeters in the event of a radiological accident. They are sensitive to ionizing radiation and they could be easily removed and replaced without destroying the phone in case of a dose assessment. However, an intrinsic background signal that partially overlaps with the radiation-induced TL signal is observed. The reconstructed dose could be overestimated if not properly taken into account. The homogeneity of this confounding signal on the surface of several screen protectors was estimated and a chemical treatment with hydrofluoric acid (HF 40%) was tested to minimize its contribution. For most of the samples studied, the intrinsic background signal remained a serious issue for dose reconstruction. Additionally, the TL signals were measured in the red detector range using two different models of red-sensitive photomultiplier tubes. The homogeneity of the intrinsic background signal on the surface of screen protectors was examined and the results of the reduction of this signal by the chemical HF treatment were discussed.
屏幕保护眼镜常用于保护手机显示屏表面免受物理损坏。最近，有人通过热释光对其剂量学特性进行了研究，目的是在发生辐射事故时，将这些物品用作潜在的应急剂量计。它们对电离辐射敏感，如果需要进行剂量评估，可以轻松地将其取出和更换，而不会损坏手机。然而，观察到与辐射引起的 TL 信号部分重叠的固有背景信号。如果不加以适当考虑，重建剂量可能会被高估。对几个屏幕保护装置表面上这种混杂信号的均匀性进行了估计，并测试了用氢氟酸（HF40%）进行化学处理，以尽量减少其贡献。对于大多数研究的样本，固有背景信号仍然是剂量重建的一个严重问题。此外，使用两种不同型号的红色敏光电倍增管在红色探测器范围内测量了 TL 信号。检查了屏幕保护装置表面固有背景信号的均匀性，并讨论了 HF 化学处理对降低该信号的效果。
