Position sensitive ZnO:Zn neutron detector - A high count rate alternative to ZnS:Ag scintillation detectors
Position sensitive ZnO:Zn neutron detector - A high count rate alternative to ZnS:Ag scintillation detectors
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位置敏感 ZnO:Zn 中子探测器 - ZnS:Ag 闪烁探测器的高计数率替代品
DOI：
10.1016/j.nima.2023.168716
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Mann S
中科院分区：
文献类型：
--
作者：
Mann S
锌锌是一种低余辉闪烁体，作为一种可能的更高的计数率替代硫化锌：银，用于散射设施中的闪烁中子探测器。在本工作中，我们研制了第一个位置灵敏的锌锌中子探测器，并与典型的硫化锌：银探测器进行了比较。由于ZnO：Zn探测器的光输出和光收集能力较弱，其探测效率约为ZnS：Ag探测器的74%。在伽马灵敏度为10−5数量级的情况下，锌锌探测器的触发效率为61%；相比之下，锌银探测器在伽马灵敏度为∼10−6时的触发效率为94%。最重要的是，锌锌探测器的倍率能力比目前标准的锌银闪烁探测器高出近两倍。随着信号处理参数的优化，速率能力有可能提高6倍，这表明了在更高的计数速率应用中使用锌锌探测器的潜力。
ZnO:Zn is a low afterglow scintillator that is investigated here as a possible higher count rate alternative to ZnS:Ag for scintillation neutron detectors at scattering facilities. In the present work the first position sensitive neutron detector using ZnO:Zn has been produced and its detector performance is evaluated in comparison to a typical ZnS:Ag detector. The detection efficiency of the ZnO:Zn detector at 1 Å was measured to be 74% that of the ZnS:Ag detector, due to lower light output and collection in the ZnO:Zn detector. The trigger efficiency of the ZnO:Zn detector was 61% with gamma sensitivities on the order of 10−5; in comparison, the ZnS:Ag detector was able to achieve trigger efficiencies of 94% at gamma sensitivities ∼10−6. Areas of development to improve these limitations will be discussed. Most importantly, the rate capability of the ZnO:Zn detector was demonstrated to be approximately two times higher than the current standard ZnS:Ag scintillation detectors. With optimisation of signal processing parameters a factor of six times improvement in rate capability may be possible, indicating potential for the use of ZnO:Zn detectors in higher count rate applications.