TY - JOUR
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 - http://www.scopus.com/inward/record.url?scp=84899479650&partnerID=8YFLogxK
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 -