Multidisciplinary evaluation of X-ray optical fiber sensors

被引：10
|
作者：
Sporea, Dan [1 ]
Mihai, Laura [1 ]
Tiseanu, Ion [1 ]
Vata, Ion [2 ]
McCarthy, Denis [3 ]
O'Keeffe, Sinead [3 ]
Lewis, Elfed [3 ]
机构：
[1] Natl Inst Laser Plasma & Radiat Phys, RO-077125 Magurele, Romania
[2] Horia Hulubei Natl Inst Phys & Nucl Engn, RO-077125 Magurele, Romania
[3] Univ Limerick, Opt Fibre Sensors Res Ctr, Limerick, Ireland
来源：
SENSORS AND ACTUATORS A-PHYSICAL | 2014年 / 213卷
关键词：
Fiber optics sensors; Fluorescent and luminescent materials; Spectroscopy; Fluorescence and luminescence; X-rays; X-ray imaging; DOSIMETER; ACCELERATORS; GAMMA;
D O I：
10.1016/j.sna.2014.03.038
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We report the complex evaluation of an extrinsic optical fiber sensor for X-ray detection, consisting of different phosphor materials (ZnS:Ag, Gd2O2S:Pr, Gd2O2S:Eu, Gd2O2S:Tb) optically coupled to the end of a plastic optical fiber. X-ray fluorescence and radioluminescence measurements were used for the evaluation of sensors responsivity. The sensitivity and linearity of sensors response as a function of the X-ray source voltage and current were assessed. The dependence of the sensor responsivity on the irradiation dose rate was measured. X-ray radiography and tomography were employed to investigate the homogeneity of the active material distribution inside the detecting tip. The most sensitive sensor proved to be that based on Gd2O2S:Tb, fixed with the EpoFix glue and manufactured using a plastic cylinder to shape the sensor tip. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：79 / 88
页数：10
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