论文标题
NAI（TL）晶体闪烁体封装在两个具有脉冲形状数据分析的有机尺度层
NaI(Tl) crystal scintillator encapsulated in two organic-scintillator layers with pulse shape data analysis
论文作者
论文摘要
从伽马射线光谱到粒子暗物质搜索，掺杂硫糖碘化钠（NAI（TL））晶体被广泛用于辐射检测应用中。但是，如果晶体暴露于相对湿度，甚至几个百分之几，其光发射会降解，从而使晶体不切实际地作为检测器。用有机闪烁体周围的晶体不仅可以保护晶体的表面免受潮湿空气的影响，而且还提供了标记背景（例如外部伽马射线和表面污染物）的新能力。我们开发了一个检测器，该检测器是通过将NAI（TL）晶体完全包围在塑料闪烁体中，然后将塑料结晶组件浸入液体闪烁体中而构建的。使用从该三重Phoswich检测器收集的数据，脉冲形状分析能够从三个闪烁器中识别各种辐射信号。此外，我们发现晶体的排放质量保持了一个月。
Thallium-doped sodium iodide (NaI(Tl)) crystals are widely used in radiation detection applications, from gamma-ray spectroscopy to particle dark matter searches. However, if the crystal is exposed to relative humidity of even a few percent, its light emission degrades, making the crystal impractical as a detector. Surrounding the crystal with organic scintillators not only protects the surface of the crystal from humid air but also offers a new capability to tag backgrounds such as external gamma rays and surface contaminations. We developed a detector that is constructed by fully encasing a NaI(Tl) crystal in a plastic scintillator and then immersing the plastic-crystal assembly in liquid scintillator. Using data collected from this triple phoswich detector, a pulse shape analysis is able to identify the various radiation signals from the three scintillators. Additionally, we find that the crystal's emission quality is maintained for a month.
