NaI(Tl+Li) (NaIL) is a promising new inorganic scintillator for thermal neutron detection with the ability for pulse shape discrimination (PSD). In this study, we first built a dual-gamma/neutron sensitive detector based on a NaIL scintillator, a photomultiplier tube and a custom-built circuit. Then, we investigated its temperature response and optimized the PSD parameters, obtaining a figure of merit (FOM) of up to 4.5 at 0–50C. Also, we examined the effect of the count rate on the detector's neutron and gamma discrimination performance; after optimization, we obtained an FOM of above 3.0 at 5000–40000 counts per second. Lastly, we estimated the neutron detection efficiency of this detector, which is about 13 cps/nv. This detector gave an excellent performance in neutron/gamma discrimination, and can be used widely in the detection of mixed radiation fields.

NaI(Tl+Li) (NaIL) 是一种很有前途的新型无机闪烁体，用于热中子探测，具有脉冲形状鉴别 (PSD) 能力。在这项研究中，我们首先构建了一个基于 NaIL 闪烁体、光电倍增管和定制电路的双伽马/中子敏感探测器。然后，我们研究了它的温度响应并优化了 PSD 参数，在 0-50C 下获得了高达 4.5 的品质因数 (FOM)。此外，我们还检查了计数率对探测器中子和伽马识别性能的影响；优化后，我们在每秒 5000-40000 次计数时获得了高于 3.0 的 FOM。最后，我们估算了该探测器的中子探测效率，约为 13 cps/nv。该探测器在中子/伽马鉴别方面具有出色的性能，