Multidisciplinary evaluation of X-ray optical fiber sensors

Dan Sporea; Laura Mihai; Ion Tiseanu; Ion Vâţǎ; Denis McCarthy; Sinead O'Keeffe; Elfed Lewis

doi:10.1016/j.sna.2014.03.038

Multidisciplinary evaluation of X-ray optical fiber sensors

Dan Sporea
, Laura Mihai
, Ion Tiseanu
, Ion Vâţǎ
, Denis McCarthy
, Sinead O'Keeffe
, Elfed Lewis

Department of Electronics & Computer Engineering

National Institute for Laser, Plasma and Radiation Physics
Horia Hulubei National Institute of Physics and Nuclear Engineering
University of Limerick

Research output: Contribution to journal › Article › peer-review

Abstract

We report the complex evaluation of an extrinsic optical fiber sensor for X-ray detection, consisting of different phosphor materials (ZnS:Ag, Gd ₂O₂S:Pr, Gd₂O₂S:Eu, Gd ₂O₂S: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 Gd₂O ₂S:Tb, fixed with the EpoFix glue and manufactured using a plastic cylinder to shape the sensor tip.

Original language	English
Pages (from-to)	79-88
Number of pages	10
Journal	Sensors and Actuators, A: Physical
Volume	213
DOIs	https://doi.org/10.1016/j.sna.2014.03.038 https://doi.org/10.1016/j.sna.2014.03.038
Publication status	Published - 1 Jul 2014

Keywords

Fiber optics sensors
Fluorescence and luminescence
Fluorescent and luminescent materials
Spectroscopy
X-ray imaging
X-rays

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title = "Multidisciplinary evaluation of X-ray optical fiber sensors",

abstract = "We report the complex evaluation of an extrinsic optical fiber sensor for X-ray detection, consisting of different phosphor materials (ZnS:Ag, Gd 2O2S:Pr, Gd2O2S:Eu, Gd 2O2S: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 Gd2O 2S:Tb, fixed with the EpoFix glue and manufactured using a plastic cylinder to shape the sensor tip.",

keywords = "Fiber optics sensors, Fluorescence and luminescence, Fluorescent and luminescent materials, Spectroscopy, X-ray imaging, X-rays",

author = "Dan Sporea and Laura Mihai and Ion Tiseanu and Ion V{\^a}{\c t}ǎ and Denis McCarthy and Sinead O'Keeffe and Elfed Lewis",

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doi = "10.1016/j.sna.2014.03.038",

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T1 - Multidisciplinary evaluation of X-ray optical fiber sensors

AU - Sporea, Dan

AU - Mihai, Laura

AU - Tiseanu, Ion

AU - Vâţǎ, Ion

AU - McCarthy, Denis

AU - O'Keeffe, Sinead

AU - Lewis, Elfed

PY - 2014/7/1

Y1 - 2014/7/1

N2 - We report the complex evaluation of an extrinsic optical fiber sensor for X-ray detection, consisting of different phosphor materials (ZnS:Ag, Gd 2O2S:Pr, Gd2O2S:Eu, Gd 2O2S: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 Gd2O 2S:Tb, fixed with the EpoFix glue and manufactured using a plastic cylinder to shape the sensor tip.

AB - We report the complex evaluation of an extrinsic optical fiber sensor for X-ray detection, consisting of different phosphor materials (ZnS:Ag, Gd 2O2S:Pr, Gd2O2S:Eu, Gd 2O2S: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 Gd2O 2S:Tb, fixed with the EpoFix glue and manufactured using a plastic cylinder to shape the sensor tip.

KW - Fiber optics sensors

KW - Fluorescence and luminescence

KW - Fluorescent and luminescent materials

KW - Spectroscopy

KW - X-ray imaging

KW - X-rays

UR - https://www.scopus.com/pages/publications/84899479650

U2 - 10.1016/j.sna.2014.03.038

DO - 10.1016/j.sna.2014.03.038

M3 - Article

AN - SCOPUS:84899479650

SN - 0924-4247

VL - 213

SP - 79

EP - 88

JO - Sensors and Actuators, A: Physical

JF - Sensors and Actuators, A: Physical

ER -

Multidisciplinary evaluation of X-ray optical fiber sensors

Abstract

Keywords

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