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A comparative study of optical and radiative characteristics of X-ray-induced luminescent defects in Ag-doped glass and LiF thin films and their applications in 2-D imaging

机译：a comparative study of optical and radiative characteristics of X-ray-induced luminescent defects in ag-doped glass and LiF thin films and their applications in 2-D imaging

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We report novel disk-type X-ray two-dimensional (2-D) imaging detectors utilising Ag-doped phosphate glass and lithium fluoride (LiF) thin films based on the radiophotoluminescence (RPL) and photoluminescence (PL) phenomena, respectively. The accumulated X-ray doses written in the form of atomic-scale Ag-related luminescent centres in Ag-doped glass and F-aggregated centres in LiF thin films were rapidly reconstructed as a dose distribution using a homemade readout system. The 2-D images reconstructed from the RPL and PL detectors are compared with that from the optically stimulated luminescence (OSL) detector. In addition, the optical and dosimetric characteristics of LiF thin films are investigated and evaluated. The possibilities of dose distributions with a high spatial resolution on the order of microns over large areas, a wide dynamic range covering 11 orders of magnitude and a non-destructive readout are successfully demonstrated by combining the Ag-doped glass with LiF thin films. © 2013 Elsevier B.V. All rights reserved.
机译：我们报告新颖的盘式X射线二维（2-D）成像探测器利用分别基于放射性光致发光（RPL）和光致发光（PL）现象的Ag掺杂的磷酸盐玻璃和氟化锂（LiF）薄膜。使用自制的读出系统，以原子分布的形式将累积的X射线剂量以原子级的与银有关的发光中心的形式写入掺银玻璃中，并以F聚集的形式迅速写入LiF薄膜中。将RPL和PL检测器重建的2D图像与光激发发光（OSL）检测器的2D图像进行比较。此外，对LiF薄膜的光学和剂量特性进行了研究和评估。通过将掺银玻璃与LiF薄膜相结合，成功地证明了在大面积上具有微米级的高空间分辨率，覆盖11个数量级的宽动态范围以及无损读数的剂量分布的可能性。 ©2013 Elsevier B.V.保留所有权利。

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