| 新型溴化镧闪烁晶体探测器研制 |
| |
| 引用本文： | 邹本飞,张明荣,杭利军,张春生,桂强. 新型溴化镧闪烁晶体探测器研制[J]. 核电子学与探测技术, 2016, 0(12): 1210-1214. DOI: 10.3969/j.issn.0258-0934.2016.12.006 |
| |
| 作者姓名： | 邹本飞 张明荣 杭利军 张春生 桂强 |
| |
| 作者单位： | 北京玻璃研究院,北京,101111 |
| |
| 摘 要： | 采用优选的封装材料及优化的工艺,将Φ1.5"×1.5"的LBC闪烁晶体与R6231-100光电倍增管直接耦合,并整体封装在铝合金外壳中,制成新型溴化镧闪烁晶体探测器。该探测器的能量分辨率为2.8%(~(137)Cs),在500 keV~1400 keV范围内能量响应的非线性为0.96%,脉冲幅度随探头方向的变化量为0.2%,在-30至+40℃范围内脉冲幅度输出的温度系数为-0.65%/℃。探测器除了来自于~(138)La的0.077cm~(-3).s~(-1)本底辐射外,还有来源于~(227)Ac及其子体的0.99cc~(-1).s~(-1)本底辐射。
|
| 关 键 词： | 溴(氯)化镧(铈)闪烁晶体 闪烁探测器 能量分辨率 能量非线性 增益漂移 温度系数 |
Preparation and Performance of New LaBr3 Scintillation Crystal Detector |
| |
| Abstract: | With optimized material and packaged technology,a new LaBr3 scintillation crystal detector for γrays is presented.It consists mainly of one piece of Φ1.5" × 1.5" LaBr3:5％ CeCl3 scintillation crystal and a R6231-100 PMT,which are coupled with each other by organic silicone resin,then sealed integrally in Al-alloy housing.The scintillation detector has an excellent energy resolution (FWHM) of 2.8％ at 662 keV,0.96％ non-proportionality of energy response between 500-1400 keV,0.2％ change of? pulse height with different directions,and-0.65％/℃ change of? pulse height with temperature between-30℃ and +40℃.It has an internal activity of up to 0.99 cps/cc which result from 227Ac and its daughters and maybe further reduced soon,besides that of about 0.077 cps/ccfrom 138La isotope. |
| |
| Keywords: | LaBr3∶5 ％ CeCl3 scintillation crystal scintillation detectors energy resolution energy non-proportionality temperature effect |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
