光子晶体制备方法对同步辐射闪烁体探测器成像分辨率的影响

doi:10.11889/j.0253-3219.2015.hjs.38.070101

Nuclear Techniques ›› 2015, Vol. 38 ›› Issue (7): 70101-070101.doi: 10.11889/j.0253-3219.2015.hjs.38.070101

• SYNCHROTRON RADIATION TECHNOLOGY AND APPLICATIONS • Next Articles

Effect of photonic crystal prepared by different methods on the spatial resolution of scintillator-based synchrotron radiation imaging detector

CHEN Mei1,2 YU Huaina1 ZHAO Jun1 WANG Liansheng1 DU Guohao1 XIE Honglan1 WU Yanqing1 TAI Renzhong1

1(Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Zhangjiang Campus, Shanghai 201204, China) 2(University of Chinese Academy of Sciences, Beijing 100049, China)

Received:2015-03-05 Revised:2015-03-24 Online:2015-07-10 Published:2015-07-10

Abstract

Abstract: Background: Indirect Charge Coupled Device (CCD) using scintillator as a convertor of X-ray is widely used in synchrotron radiation X-ray imaging system. High detection efficiency and high spatial resolution of the detector are required to take advantages of the third generation synchrotron radiation light source. It has been proved that patterning the scintillator with photonic crystal (PhC) could increase the light output of the scintillator, thus enhancing the detection efficiency of scintillator-based detector. Purpose: In order to exploit the application of PhC in scintillator-based X-ray imaging detector, it is necessary to investigate the effect of PhC on the spatial resolution of the imaging detector. Methods: Three kinds of PhC, Polystyrene (PS), Anodic Aluminum Oxide (AAO) and SiNx, were employed and superinduced on the Y3Al5O12:Ce scintillator basal. Imaging experiments with and without PhC were performed at the BL13W1 beamline of the Shanghai Synchrotron Radiation Facility (SSRF). The effect of PhC on the resolution was evaluated by comparing images of resolution bar taken by detector with and without PhC. Results: The homogeneity and the lattice type of the PhC, i.e., SiNx have great impact on the spatial resolution. Conclusion: PhC with homogeneous structure is preferred to achieve better spatial resolution. Triangular lattice PhC performs better than the square lattice one in imaging detector.

Key words: Photonic crystals, Scintillator, Synchrotron radiation imaging, Detector, Spatial resolution

CHEN Mei, YU Huaina, ZHAO Jun, WANG Liansheng, DU Guohao, XIE Honglan, WU Yanqing, TAI Renzhong. Effect of photonic crystal prepared by different methods on the spatial resolution of scintillator-based synchrotron radiation imaging detector[J].Nuclear Techniques, 2015, 38(7): 70101-070101.

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Effect of photonic crystal prepared by different methods on the spatial resolution of scintillator-based synchrotron radiation imaging detector

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