Efficiency of Luminescence of (Lu,Gd)2SiO5: Ce (LGSO: Ce) Crystal Sensory Material in the X-Ray Imaging Range

被引：1
作者：
Michail, C. [1 ]
Valais, I. [1 ]
David, S. [1 ]
Bakas, A. [2 ]
Kalivas, N. [1 ]
Fountos, G. [1 ]
Kandarakis, I. [1 ]
Yannakopoulos, Panayotis H. [3 ]
Nikolopoulos, D. [3 ]
机构：
[1] Technol Educ Inst Athens, Dept Biomed Engn, Radiat Phys Mat Technol & Biomed Imaging Lab, Athens 12210, Greece
[2] Technol Educ Inst Athens, Dept Med Radiol Technol, Athens 12210, Greece
[3] Piraeus Univ Appl Sci, Dept Elect Comp Syst Engn, Petrou Ralli & Thivon 250, GR-12244 Aigaleo, Greece
来源：
NUCLEAR RADIATION NANOSENSORS AND NANOSENSORY SYSTEMS | 2016年
关键词：
Inorganic scintillators; Radiation detectors; (Lu; Gd)(2)SiO5:Ce; POWDER SCINTILLATORS; LYSO-CE; GSO-CE; LSO-CE; EXCITATION; RESOLUTION; RADIATION; PERFORMANCE; SYSTEMS; GROWTH;
D O I：
10.1007/978-94-017-7468-0_7
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The aim of the present study was to investigate the absolute luminescence efficiency (AE) of mixed oxyorthosilicate (Lu,Gd)(2)SiO5:Ce (LGSO:Ce) single crystals, under X-ray irradiation. Six (Lu,Gd)(2)SiO5:Ce crystal samples, with dimensions of 3 x 3 x 5, 3 x 3 x 6, 3 x 3 x 10, 3 x 3 x 15, 10 x 10 x 10 and 10 x 10 x 20 mm(3) were examined. The light emitted by the crystals, was evaluated by performing measurements of the AE under X-ray exposure conditions, with tube voltages ranging from 50 to 130 kV. Results were compared with previously published data for GSO:Ce and LSO:Ce crystals. The spectral compatibility of the (Lu,Gd)(2)SiO5:Ce crystal, with various existing optical detectors, was investigated after emission spectra measurements. Absolute efficiency was found maximum at 130 kVp for the 3 x 3 x 15 mm(3) (Lu,Gd)(2)SiO5:Ce crystal (25.40 E.U). AE of the 10 x 10 x 10 mm(3) (Lu,Gd)(2)SiO5:Ce crystal was found higher than both GSO:Ce and LSO:Ce crystals, in the whole X-ray tube range. The emission spectrum of (Lu,Gd)(2)SiO5:Ce is excellent matched with the spectral sensitivities of photocathodes and silicon photomultipliers often employed in radiation detectors. Considering the high luminescence efficiency values and the spectral compatibility with the various photodetectors, (Lu,Gd)(2)SiO5:Ce crystal could be considered for use in combinedmedical imaging detectors i.e. integrated PET/CT detectors.
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页码：81 / 90
页数：10
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