论文标题
聚（乙烯2,6-裸乙酸酯）对中子的光反应
Light Response of Poly(ethylene 2,6-napthalate) to Neutrons
论文作者
论文摘要
随着吨尺度，稀有事件和低温探测器的发展，低背景活性材料的必要性越来越大。由于其强大的结构特性以及其在蓝色波长区域的闪烁光，因此考虑了这些应用的聚（乙烯-2,6-萘盐）（PEN）（PEN）。已经测量了笔的放射性发光特性，以帮助评估该材料。在本文中，我们使用三种不同的中子来源介绍了对笔的淬灭因子的测量。从$^{252} $ CF中自发裂变发出的中子，由dd发电机产生的中子，以及从$^{13} $ c（$α$，n）$^{16} $ o和$^{$α$^{16} $ o和$^{7} $ li（p，n）$^7} $的中子。裂变源使用飞行时间来确定中子能量，并使用薄靶标和反应运动学定义了来自核反应的中子能量。发现Birk的因素和闪烁效率为$ KB = 0.12 \ pm 0.01 $ mm mev $^{ - 1} $和$ s = 1.31 \ pm0.09 $ mev $ _ {ee} $ mev $ _ MEV $^{ - 1} $，从同一性的数据中获得的数据分析来自三种不同的源。使用这些参数，可以评估笔作为大规模，低背景物理实验的可行材料。
There is increasing necessity for low background active materials as ton-scale, rare-event and cryogenic detectors are developed. Poly(ethylene-2,6-naphthalate) (PEN) has been considered for these applications because of its robust structural characteristics, and its scintillation light in the blue wavelength region. Radioluminescent properties of PEN have been measured to aid in the evaluation of this material. In this article we present a measurement of PEN's quenching factor using three different neutron sources; neutrons emitted from spontaneous fission in $^{252}$Cf, neutrons generated from a DD generator, and neutrons emitted from the $^{13}$C($α$,n)$^{16}$O and the $^{7}$Li(p,n)$^{7}$Be nuclear reactions. The fission source used time-of-flight to determine the neutron energy, and the neutron energy from the nuclear reactions was defined using thin targets and reaction kinematics. The Birk's factor and scintillation efficiency were found to be $kB = 0.12 \pm 0.01$ mm MeV$^{-1}$ and $S = 1.31\pm0.09$ MeV$_{ee}$ MeV$^{-1}$ from a simultaneous analysis of the data obtained from the three different sources. With these parameters, it is possible to evaluate PEN as a viable material for large-scale, low background physics experiments.
