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

Chen HU1,2(), Shu-Ping LIU1,2, Zhao-Dong FENG2,3,4, Xiu-Bo QIN3,4, Yun SHI1(), Yu-Bai PAN1()   

  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

CLC Number: 

  • TL812