Characteristic of a Cs2LiLaBr6:Ce scintillator detector and the responses for fast neutrons

Characteristic of a Cs2LiLaBr6:Ce scintillator detector and the responses for fast neutrons
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Cs2LiLaBr6:Ce闪烁体探测器的特性和快中子响应

DOI:
10.1016/j.nima.2018.05.006
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发表时间:
2018-10
期刊:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
影响因子:
--
通讯作者:
Xinhua Wang
Xinhua Wang
中科院分区:
其他
文献类型:
--
作者:
Jianguo Qin;Jun Xiao;Tonghua Zhu;Xinxin Lu;Zijie Han;Mei Wang;Li Jiang;Yunfeng Mou;Junjie Sun;Zhongwei Wen;Xinhua Wang

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提出了一种能同时探测γ射线和热中子事件的钾长石晶体CLLB,它具有脉冲形状判别法区分它们的能力。测量了γ-射线、α粒子、热中子和快中子事件的脉冲形状,确定了PSD可以分离γ-射线、α粒子和热中子事件,优秀值为1.23。在59.6keV-4438keV能区,γ-射线非比例响应小于2%。用氚(DT)反应中子研究和分析了CLLB型闪烁体的快中子响应。由78溴和80溴发出的511keVγ射线的活度可达∼0.709 Bq⋅n−1。在15 MeVee-18 MeVee处发现了一些高能事件,这些高能事件是由6Li(n,T)4He反应产生的。
The elpasolite crystal CLLB is proposed to detect both γ-ray and thermal neutron events with the ability to distinguish them by pulse shape discrimination (PSD) method. Pulse shapes of γ-ray, alpha particle, thermal and fast neutron events were measured and determined that PSD can be performed to separate γ-ray from alpha and thermal neutron events with a Figure of Merit (FoM) 1.23. The γ-ray non-proportional response is less than 2% in the energy region of 59.6 keV–4438 keV. Fast neutron responses for CLLB scintillator were investigated and analyzed using deuterium tritium (DT) reaction neutrons. The activity of 511 keV γ-ray emitted by 78 Br and 80 Br can reaches up to∼ 0.709 Bq⋅ n− 1, some high-energy events at 15 MeVee–18 MeVee were found that generated according to the reaction 6 Li (n, T) 4 He.
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