Establishment of CZT pixellated radiation detection system and pulse-height correction

被引：1

作者：

Shen, Min ^{[1
,2
]}

Xiao, Sha Li ^{[2
]}

Li, Miao ^{[3
]}

机构：

[1] Chongqing Radio & TV Univ, Chongqing 400052, Peoples R China

[2] Chongqing Univ, Key Lab Optoelect Technol & Syst, Educ Minist China, Chongqing 400030, Peoples R China

[3] Chongqing Univ Posts & Telecommun, Coll Optoelect Engn, Chongqing 400065, Peoples R China

来源：

OPTIK | 2018年 / 158卷

基金：

中国国家自然科学基金;

关键词：

CdZnTe (CZT); Semiconductor detector; Pixel array; Pulse-height correction; Energy resolution;

D O I：

10.1016/j.ijleo.2017.12.143

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

11 x 11 x 3 mm(3) and 4 x 4 pixel array CdZnTe (CZT) detector system based on the principle of CZT pixel array detector and correction algorithm has been established. The leakage current of CZT pixellated crystal is tested and analyzed. The pulse amplitude spectrum of the CZT detector has been measured using Cs-137 662 keV Gamma source. The average energy resolution of pixellated detector system is 3.3% and full energy peak FWHM is 21.85 keV.The corrected algorithm of pulse-height is applied for improving spectroscopy response. The average energy resolution of corner pixels has been improved. The best energy resolution of pixels is 2.5% after correction. The energy resolution of the 4 x 4 pixellated CZT detector system is excellent. The spectrum performance of edge pixels is obvious improved by pulse height correction. The resolution of edge pixels is improved efficiently. (C) 2017 Elsevier GmbH. All rights reserved.

引用

页码：1220 / 1226

页数：7

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