Performance comparison of scintillators for alpha particle detectors
Performance comparison of scintillators for alpha particle detectors
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DOI：
10.1016/j.nima.2014.07.046
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发表时间：
2014-11-11
影响因子：
1.4
通讯作者：
Higuchi, Mikio
中科院分区：
文献类型：
--
作者：
Morishita, Yuki;Yamamoto, Seiichi;Higuchi, Mikio
α粒子闪烁探测器通常用于核燃料设施。α粒子探测器在使用α发射体的放射性核素治疗的研究领域中也变得重要。ZnS（Ag）是阿尔法粒子探测器最常用的闪烁体，因为它的光输出很高。然而，ZnS（Ag）基闪烁探测器的能量分辨率很差，因为它们是不透明的。对一种新的陶瓷样品--掺铈Gd_2Si_2 O_7（GPS）闪烁体进行了α粒子探测器性能测试，并与ZnS（Ag）、GAGG和标准塑料闪烁体进行了比较。将不同的掺杂材料耦合到两种不同的光电探测器，即光电倍增管（PMT）和硅光电倍增管（Si-PM）：对每种探测系统的性能进行了比较。在GPS和GAGG样品的情况下，已经获得了有希望的结果，就能量分辨率性能而言（PMT为10%，Si-PM为14%）。考虑到光电探测器在Lest下的量子效率及其与不同发射器的发射波长的关系，将GPS与PMT以及GAGG与Si-PM（C）2014 Elsevier B. V.耦合获得了最佳结果。
Scintillation detectors for alpha particles are often used in nuclear fuel facilities. Alpha particle detectors have also become important in the research field of radionuclide therapy using alpha emitters. ZnS(Ag) is the most often used scintillator for alpha particle detectors because its light output is high. However, the energy resolution of ZnS(Ag)-based scintillation detectors is poor because they are not transparent. A new ceramic sample, namely the cerium doped Gd2Si2O7 (GPS) scintillator, has been tested as alpha particle detector and its performances have been compared to that one of three different scintillating materials: ZnS(Ag), GAGG and a standard plastic scintillator. The different scintillating materials have been coupled to two different photodetectors, namely a photomultiplier tube (PMT) and a Silicon Photo multiplier (Si-PM): the performances of each detection system have been compared. Promising results as far as the energy resolution performances (10% with PMT and 14% with Si-PM) have been obtained in the case of GPS and GAGG samples. Considering the quantum efficiencies of the photodetectors under Lest and their relation to the emission wavelength of the different scintillators, the best results were achieved coupling the GPS with the PMT and the GAGG with the Si-PM (C) 2014 Elsevier B.V. All rights reserved.