The Use of Pulse Processing Techniques to Improve the Performance of Cdl-,Zn,Te Gamma-Ray Spectrometers
The Use of Pulse Processing Techniques to Improve the Performance of Cdl-,Zn,Te Gamma-Ray Spectrometers
复制标题
使用脉冲处理技术提高 Cdl-、Zn、Te 伽马射线光谱仪的性能
DOI：
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发表时间：
1996
期刊：
影响因子：
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通讯作者：
R. James
中科院分区：
文献类型：
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作者：
J. Lund;R. Olsen;J. M. V. Scyoc;R. James
丙！近年来，CZT作为一种室温γ射线探测器材料，显示出很大的应用前景。大体积（> 1cm 3）高电阻率CZT晶体的可用性允许展示比用类似材料CdTe可以构建的探测器大得多的探测器。然而，CZT -像许多其他室温材料一样-遭受空穴传输性能差的问题。由于CZT的空穴漂移特性较差，在γ射线脉冲高度谱中产生了特征性的“空穴拖尾”现象。我们采用脉冲处理的方法来减少空穴拖尾效应，提高CZT探测器的能量分辨率。我们采用了两种信号处理方法来减少CZT探测器中的孔拖尾：数字上升时间补偿和双时间常数采样。我们讨论了这些技术的实施，展示在实验室中获得的结果，并与其他检测器系统获得的性能进行比较。
C!d,,Zn,Te (CZT) has recently shown great promise for use EIS a room temperature gamma-ray detector material. The availability of large volume (> 1 cm3) high resistivity CZT crystals has allowed the demonstration of detectors much larger than can be built with the similar material CdTe. However, CZT -- like many other room-temperature materials -- suffers from the poor transport properties of holes. The poor hole drift properties of CZT cause the characteristic “hole tailing” in gamma-ray pulse height spectra. We have applied pulse processing methods to reduce the hole tailing effects and improve the energy resolution of CZT detectors. We have used two signal processing methods to reduce hole tailing in CZT detectors: digital rise-time compensation and dual time-constant sampling. We discuss the implementation of these techniques, demonstrate results obtained in the laboratory, and compare the performance obtained with other detector systems.