|
|
|
|
|
|
Fabrication and Performance of Pixelated γ-CuI Scintillation Conversion Screens Based on Oxidized Silicon Micropore Arrays |
SUN Shou-qiang, GU Mu*, CHEN Ting-ting, ZHANG Juan-nan, LIU Xiao-lin, LIU Bo, HUANG Shi-ming, NI Chen |
Shanghai Key Laboratory of Special Artificial Microstructure Materials & Technology, School of Physics Science and Engineering, Tongji University, Shanghai 200092, China |
|
|
Abstract The pixelated CuI scintillation conversion screens which have a monodisperse micro-columnar structure were fabricated with pressure-injection method using the high-purity CuI powder and oxidized silicon micropore arrays. The results of scanning electron microscopy and X-ray diffraction show that CuI micro-columns are continuous and dense with the crystal lattice of (-phases. Their diameters, spaces and depths are about 2.5, 1.5 and 80 μm, respectively. X-ray excited luminescence (XEL) reveals that the as-prepared γ-CuI scintillation screens have an emission band near 680 nm, which has a comparatively slow decay time. After iodine-doping especially at the content of 10 Wt%, the emission band near 680 nm is effectively suppressed with an emission peak at 432 nm, which has an ultra-fast decay time. The spatial resolution of the pixelated γ-CuI scintillation conversion screens was measured with knife-edge method. The result shows that the resolution can reach to 38 lp·mm-1, which indicate that the pixelated γ-CuI scintillation screens have excellent spatial resolution with ultra-fast time response and it possess a unique value in X-ray imaging.
|
Received: 2015-10-09
Accepted: 2016-03-16
|
|
Corresponding Authors:
GU Mu
E-mail: mgu@tongji.edu.cn
|
|
[1] Antonuk L, Jee K W, El-Mohri Y, et al. Medical Physics, 2000, 27(2): 289.
[2] Martin T, Koch A. Journal of Synchrotron Radiation, 2006, 13(2): 180.
[3] Badel X, Linnros J, Kleimann P, et al. IEEE Transactions on Nuclear Science, 2004, 51(3): 1001.
[4] Nagarkar V V, Tipnis S V, Gaysinskiy V B, et al. International Society for Optics and Photonics, 2003, 5030: 541.
[5] Cha B K, Bae J H, Kim B J, et al. Nuclear Inst, and Methods in Physics Research, A, 2008, 591(1): 113.
[6] Kim B J, Cho G, Cha B K, et al. Radiation Measurements, 2007, 42(8): 1415.
[7] Simon M, Engel K J, Menser B, et al. Medical Physics, 2008, 35(1): 968.
[8] Derenzo S E, Moses W W. Lawrence Berkeley Laboratory Report No. LBL-33295, 1992, 1.
[9] Luo Z P. Metallography, Microstructure, and Analysis, 2012, 1(6): 320.
[10] Linnros J, Badel X, Kleimann P. Physica Scripta, 2006, T126: 72.
[11] Samei E, Ranger N T, Dobbins J T, et al. Medical Physics, 2006, 33(5): 1454.
[12] Gao P, Gu M, Liu X, et al. Applied Physics Letters, 2009, 95(22): 221904.
[13] Cai Z, Li F, Gu M, et al. The 12th International Conference on Inorganic Scintillators and Their Applications, O2.3, Shanghai, China, 2013, 4: 15.
[14] Cha B K, Lee S J, Muralidharan P, et al. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2011, 652(1): 717. |
[1] |
CHU Zhi-hong1, 2, ZHANG Yi-zhu2, QU Qiu-hong3, ZHAO Jin-wu1, 2, HE Ming-xia1, 2*. Terahertz Spectral Imaging With High Spatial Resolution and High
Visibility[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(02): 356-362. |
[2] |
FAN Xian-guang1, 2, HUANG Yan-rui1, LIU Long1, XU Ying-jie1, WANG Xin1, 2*. An Interpolation Method for Raman Imaging Using Voigt Function[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(05): 1478-1483. |
[3] |
LEI Fan-pu1, 2, 3, BAI Yong-lin3, ZHU Bing-li3, BAI Xiao-hong3, QIN Jun-jun3, XU Peng3, HOU Xun1. Study of Ultraviolet Photon Counting Detector with Delay-Line Anode[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 37(10): 2989-2994. |
[4] |
XIA Ming, GU Mu*, LIU Xiao-lin, LIU Bo, HUANG Shi-ming, NI Chen . Preparation and Performance of Ultrafast γ-CuI Scintillation Conversion Screen [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2015, 35(04): 1079-1083. |
[5] |
ZHANG Zeng-yan, JI Te, ZHU Zhi-yong, ZHAO Hong-wei, CHEN Min*, XIAO Ti-qiao,GUO Zhi* . An Effective Method for Improving the Imaging Spatial Resolution of Terahertz Time Domain Spectroscopy System [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2015, 35(01): 1-4. |
[6] |
WEI Xiang-qin1, 2, GU Xing-fa1, 2*, YU Tao1, 2, MENG Qing-yan1, 2*, LI Bin1, 2, GUO Hong1, 2, . Spatial Resolution Standardization of Payload on Board of Remote Sensing Satellite Based on Application Requirements [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2012, 32(03): 781-785. |
[7] |
HUANG Qiao-song1,YU Zhao-xian2,LI Jing3. Microscopic Raman Spectral Imaging of Oily Core[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2008, 28(12): 2880-2884. |
|
|
|
|