This paper presents the performance of polystrene based plastic scintillator produced in Turkish Energy, Nuclear and Mineral Research Agency (TENMAK). The scintillator is manufactured using thermal polymerization of commercially available styrene monomer doped with first and second fluorescent dyes. The absorption spectrum of the scintillator exhibited two absorption bands at 225 nm and 340 nm, with an absorption edge observed at 410 nm. The wavelength of the emitted light was measured in the range of 400–800 nm, with a maximum intensity at 427 nm. Internal conversion electrons from the ¹³⁷Cs source were used to evaluate the characteristics of the new scintillator, particularly its light yield. As the light readout the MAPD-3NM type silicon photomultiplier array (4 × 4) with an active area of 15 × 15 mm${}^2$, assembled using single MAPDs with an active area of 3.7 × 3.7 mm${}^2$, was used. The light yield of the scintillator was determined to be 6134 photons/MeV. In addition, the efficiency of the scintillator for gamma rays with an energy of 662 keV was found out to be approximately 1.8%. CmBe neutron source was employed to evaluate its fast neutron detection performance. However, neutron/gamma discrimination using pulse shape discrimination (charge integration) method was not observed. The results demonstrate the potential of produced plastic scintillator for various applications, particularly in radiation monitoring and detection systems.

本文介绍了土耳其能源、核和矿物研究机构 (TENMAK) 生产的聚苯乙烯基塑料闪烁体的性能。使用掺杂有第一和第二荧光染料的市售苯乙烯单体的热聚合来制造闪烁体。闪烁体的吸收光谱在225 nm和340 nm处呈现出两个吸收带，在410 nm处观察到吸收边。发射光的波长测量范围为 400-800 nm，最大强度为 427 nm。^{来自137 Cs 源的}内转换电子用于评估新型闪烁体的特性，特别是其光输出。作为光读出的 MAPD-3NM 型硅光电倍增管阵列 (4 × 4)，有效面积为 15 × 15 mm${}^2$，使用有效面积为 3.7 × 3.7 mm 的单个 MAPD 组装${}^2$，被使用。闪烁体的光输出被测定为6134光子/MeV。此外，闪烁体对能量为662 keV的伽马射线的效率约为1.8%。采用CmBe中子源评估其快中子探测性能。然而，没有观察到使用脉冲形状辨别（电荷积分）方法的中子/伽马辨别。结果证明了所生产的塑料闪烁体在各种应用中的潜力，特别是在辐射监测和检测系统中。