Design and optimization of an analog filter with a CdTe detector for X-ray fluorescence applications

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• 作者：Hyojeong Choi ; Hui Su Kim ; Young Soo Kim…
• 关键词：X ; ray fluorescence ; Analog shaping amplifier ; CdTe
• 刊名：Journal of the Korean Physical Society
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：69
• 期：7
• 页码：1157-1162
• 全文大小：2,198 KB
• 刊物主题：Physics, general; Theoretical, Mathematical and Computational Physics; Particle and Nuclear Physics;
• 出版者：Springer Netherlands
• ISSN：1976-8524
• 卷排序：69

文摘

An analog pre-filter circuit for digital pulse processing is designed and optimized for X-ray fluorescence (XRF) applications to replace traditional analog shaping amplifiers. To optimize the pre-filter performance, we characterized noise electrons as a function of the input pulse rise time and decay time of the output pulse by using the full width at half maximum. In addition, gamma-ray energy measurements at room temperature showed that the commercially available CdTe Schottky-type radiation detector with our newly designed and optimized pre-filter circuit exhibited full widths at half maxima of 4.97 (Ba-133, at 53 keV) and 5.56 keV (Am-241, at 59.5 keV), respectively.