首页> 外文期刊>Optik: Zeitschrift fur Licht- und Elektronenoptik: = Journal for Light-and Electronoptic >QUANTITATIVE CHARACTERIZATION OF POINT SPREAD FUNCTION AND DETECTION QUANTUM EFFICIENCY FOR A YAG SCINTILLATOR SLOW SCAN CCD CAMERA
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QUANTITATIVE CHARACTERIZATION OF POINT SPREAD FUNCTION AND DETECTION QUANTUM EFFICIENCY FOR A YAG SCINTILLATOR SLOW SCAN CCD CAMERA

机译:YAG闪烁体慢扫描CCD相机点扩散函数的定量表征与检测量子效率。

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摘要

The point spread function (PSF) of a slow scan CCD camera equipped with a YAG single crystal scintillator has been determined with high precision by two independent techniques. Both methods, the imaging of a sharp edge and the evaluation of noise patterns, yield almost identical results for the PSF. It is shown that a deconvolution of experimental images allows the reconstruction of image details down to pixel size. From the analysis of deconvoluted noise patterns the detection quantum efficiency (DQE) has been determined to be about 0.6 for an electron dose in the typical working range of 300 to 3000 electrons per pixel. [References: 12]
机译:配备有YAG单晶闪烁体的慢速扫描CCD相机的点扩展功能(PSF)已通过两项独立的技术高精度确定。两种方法(锐边成像和噪声模式评估)对于PSF都产生几乎相同的结果。结果表明,对实验图像进行去卷积可以重建图像细节,直至像素大小。根据去卷积噪声模式的分析,对于在每个像素300至3000个电子的典型工作范围内的电子剂量,检测量子效率(DQE)已确定为大约0.6。 [参考:12]

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