Study on the Characteristics of a Scintillator for Beta-ray Detection using Epoxy Resin
Study on the Characteristics of a Scintillator for Beta-ray Detection using Epoxy Resin
复制标题
环氧树脂探测β射线闪烁体特性研究
DOI：
10.1051/epjconf/201715307005
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发表时间：
2017
影响因子：
3.9
通讯作者：
Jongwon Choi
中科院分区：
文献类型：
--
作者：
J. Nam;Y. S. Choi;Sangbum Hong;B. Seo;J. Moon;Jongwon Choi
研制了一种用于探测β射线的塑料闪烁体薄板。塑料闪烁体是用环氧树脂和有机溶剂如2.5-二苯基恶唑（PPO）和1，4-双[5-苯基-2-恶唑]苯（POPOP）制成的。通过吸收光谱、透射光谱、发射光谱和透明性测定了环氧树脂和有机增透剂的配比。将它们在有机澄清剂中的最佳PPO和POPOP重量百分比调整为0.2wt%：0.01wt%。用所制备的塑料闪烁体对锶-90标准源进行了测量。所制备的塑料闪烁体的脉冲高度谱和总计数与商业塑料闪烁体相似。基于上述结果，制备了大面积塑料闪烁体，用于Sr-90污染场地的快速调查。对制备的大面积塑料闪烁体进行了实验室性能评价。评估结果有望在大面积塑料闪烁探测器的开发中得到有效利用。根据评价结果开发的大面积塑料闪烁探测器有望用于快速测量用作核电设施的场地中的Sr-90污染。
A thin plate of a plastic scintillator for detecting a beta-ray was developed. The plastic scintillator was made using epoxy resin and organic scintillators such as 2.5-diphenyloxazole (PPO) and 1,4-bis [5-phenyl-2-oxazole] benzene (POPOP). The mixture ratio of epoxy resin and the organic scintillators was determined using their absorbance, transmittance, emission spectra, and transparency. Their optimal weight percentage of PPO and POPOP in the organic scintillators was adjusted to 0.2 wt%:0.01 wt%. The prepared plastic scintillator was used to measure the standard source of Sr-90. The pulse height spectra and total counts of the prepared plastic scintillator were similar to a commercial plastic scintillator. Based on the above results, a large-area plastic scintillator was prepared for rapid investigation of a site contaminated with Sr-90. The prepared large-area plastic scintillator was evaluated for the characteristics in the laboratory. The evaluation results are expected to be usefully utilized in the development of a large-area plastic scintillation detector. The large-area plastic scintillation detector developed on the basis of the evaluation results is expected to be utilized to quickly measure the contamination of Sr-90 in the grounds used as a nuclear power facility.