Journal of Inorganic Materials ›› 2015, Vol. 30 ›› Issue (8): 814-818.DOI: 10.15541/jim20150046

• Orginal Article • Previous Articles     Next Articles

Flat Panel X-ray Imaging of LuAG:Ce,Mg Ceramic Scintillators

HU Chen1,2, LIU Shu-Ping1,2, FENG Zhao-Dong2,3,4, QIN Xiu-Bo3,4, SHI Yun1, PAN Yu-Bai1   

  1. (1. Key Laboratory of Transparent Opto-Functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China; 2. University of Chinese Academy of Sciences, Beijing 100049, China; 3. Division of Nuclear Technology and Applications, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China; 4.?Beijing Engineering Research Center of Radiographic Techniques and Equipment, Beijing 100049, China)
  • Received:2015-01-22 Revised:2015-03-17 Online:2015-08-20 Published:2015-07-21
  • About author:HU Chen. E-mail:huchen@student.sic.ac.cn

Abstract:

(Lu, Mg, Ce)3Al5O12 (LuAG: Ce, Mg) transparent ceramic scintillators (LuAG: 0.3at% Ce, 0.2at% Mg) with high optical and scintillation efficiency were fabricated by solid-state reaction method combined with vacuum sintering. The ceramic scintillator with dimension of 20 mm×20 mm×0.05 mm was packed with graphite substrate of 25 mm×25 mm×4 mm by graphite powders contained silica gel. Laser cutting of cubic array with dimension of 50 μm×50 μm and distance of 10 μm was performed. Flat panel X-ray imaging based on as prepaired ceramics was demonstrated. The images were good quality with a high resolution. The quality of the photos were evaluated by line-pair pattern method and knife edge method, respectively. MTF value of 17.5% was at 10 lp/mm for the ceramic scintillators after laser cutting, while resolution of 9 lp/mm achieved at 10% MTF by knife edge measurement. Based on above data, LuAG:Ce,Mg ceramics are proved to be a promising scintillator in flat panel X-ray imaging.

Key words: LuAG:Ce, Mg, ceramic scintillators, flat panel detector, X-ray imaging

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