闪烁体-光纤组合式辐射探测器γ相对灵敏度研究 |
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引用本文: | 张美,黎春华,彭博栋,盛亮,杜宏亮,魏福利,王培伟,李阳,袁媛,赵吉祯.闪烁体-光纤组合式辐射探测器γ相对灵敏度研究[J].核技术,2009,32(11). |
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作者姓名: | 张美 黎春华 彭博栋 盛亮 杜宏亮 魏福利 王培伟 李阳 袁媛 赵吉祯 |
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作者单位: | 西北核技术研究所,西安,710024 |
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摘 要: | 根据光纤光导的耦合理论,推导了闪烁体-光纤组合式探测器γ灵敏度理论公式,计算了LSO、 ST401两种闪烁体-光纤探测器的相对灵敏度,在平均能量为1.25 MeV的60Co射线源上测得10 mm厚LSO闪烁体-光纤组合式探测器的灵敏度是相同厚度ST401的19倍,理论计算和实验结果在不确定度范围内一致.
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关 键 词: | 闪烁体-光纤辐射探测器 γ灵敏度 耦合效率 |
Study on relative gamma sensitivity of scintillator-fiber detector |
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Abstract: | This work is aimed at developing the technique of multi-channel scintillator-fiber detector. In this paper, theoretical gamma sensitivity of a fiber detector was formulated for calculating the relative sensitivity of LSO and ST401 scintillator-fiber detectors. Outcomes of the calculation were validated by experiment with a ~(60)Co source. The results show that sensitivity of an LSO scintillator-fiber detector of 10-mm thicknesd is about 19 times higher than the system using ST401 with the same size of LSO detector. The theoretical results agree with the experimental data. |
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Keywords: | Scintillator-fiber detector Gamma sensitivity Coupling efficiency |
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