The Micro-Layered Fast Neutron Detector (MLFD) is a proton-recoil scintillator that incorporates the basic concept of a Hornyak button detector with an improved design using a layered structure of ZnS:Ag and PMMA (polymethyl methacrylate). The MLFD was predicted to have low sensitivity to gamma rays, hence pulse shape discrimination was performed to determine the gamma-ray contribution. Presented in this paper are the pulse-shape discrimination characteristics of the MLFD. The charge integration technique was employed to discriminate between the neutrons and gamma rays using a fast digitzer. The MLFD was found to exhibit excellent neutron/gamma-ray discrimination, with the highest Figure-of-Merit (FoM) being 4.56. With PSD, the neutron signal is distinct from gamma-ray, Ĉerenkov and electronic noise signals. This clear separation was achieved due to the large differences in decay times of the neutron and gamma-ray-induced pulses in the ZnS:Ag phosphor. The MLFD can be employed in high gamma-ray exposure fields, up to at least 1287.7 mR/hr, without appreciable degradation in PSD performance.

微层快速中子探测器（MLFD）是质子回旋闪烁器，结合了Hornyak按钮探测器的基本概念，并采用ZnS：Ag和PMMA（聚甲基丙烯酸甲酯）的分层结构进行了改进设计。预计MLFD对伽玛射线的敏感性较低，因此执行了脉冲形状判别以确定伽玛射线的贡献。本文介绍的是MLFD的脉冲形状识别特性。使用电荷积分技术使用快速数字化仪来区分中子和伽马射线。发现MLFD具有出色的中子/伽马射线分辨力，最高品质因数（FoM）为4.56。使用PSD，中子信号不同于伽马射线，谢伦科夫信号和电子噪声信号。ZnS：Ag荧光粉中中子和伽马射线诱导的脉冲的衰减时间差异很大，因此可以实现这种清晰的分离。MLFD可以在高达至少1287.7 mR / hr的高伽马射线曝光领域中使用，而PSD性能不会明显下降。