论文标题
低能核和电子后坐力的脉冲形状歧视，以改善NAI的颗粒鉴定：TL
Pulse Shape Discrimination of low-energy nuclear and electron recoils for improved particle identification in NaI:Tl
论文作者
论文摘要
NAI：TL晶体中的闪烁机理产生不同的脉冲形状，这些脉冲形状取决于传入的粒子类型。来自核后坐力事件的闪烁光的时间分布比电子后坐力事件的衰减速度快，并且可以使用各种脉冲形状辨别（PSD）技术对这种差异进行分类。在这项研究中，我们测量了NAI：TL晶体中的核和电子后坐力，电子等效能量在2至40 KEV之间。我们根据事件类型的可能性报告了一种新的PSD方法；这表现优于电荷加权的平均时间，这是NAI：TL中PSD的常规度量。此外，我们表明两种方法的线性组合可以提高这些能量下的歧视能力。
The scintillation mechanism in NaI:Tl crystals produces different pulse shapes that are dependent on the incoming particle type. The time distribution of scintillation light from nuclear recoil events decays faster than for electron recoil events and this difference can be categorised using various Pulse Shape Discrimination (PSD) techniques. In this study, we measured nuclear and electron recoils in a NaI:Tl crystal, with electron equivalent energies between 2 and 40 keV. We report on a new PSD approach, based on an event-type likelihood; this outperforms the charge-weighted mean-time, which is the conventional metric for PSD in NaI:Tl. Furthermore, we show that a linear combination of the two methods improves the discrimination power at these energies.
