塑料闪烁光纤阵列探测器研制及验证

TL812; 为解决污染土壤中90Sr的快速、直接测定难题,研制了塑料闪烁光纤阵列探测器,通过塑料闪烁光纤空间排布设计、多路信号分析逻辑设定,实现从β、γ及宇宙射线信号中甄别出90Sr-90Y衰变的β射线信号,完成了土壤中90Sr的直接测量.探测器本底计数率为1.98 s-1,90Sr探测效率为1.4％,最小可探测活度为0.18 Bq/g(5 min),测量净计数率与参考土壤90Sr比活度呈线性关系,拟合优度为0.999.测量了极低放污染土壤,通过添加定量的90 Sr再次测量方式对结果进行验证,测量值与参考值符合较好.塑料闪烁光纤阵列探测器测量速度快、准确度高,可用于核设施退役、环境普查等大规...

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Published in原子能科学技术 Vol. 56; no. 9; pp. 1952 - 1957
Main Authors 马鹏, 孙宏清, 党云博, 宋志君, 张生栋, 舒复君
Format Journal Article
LanguageChinese
Published 中国原子能科学研究院,北京 102413 01.09.2022
Subjects
阵列探测器
90Sr
闪烁光纤
土壤
Online AccessGet full text
ISSN1000-6931
DOI10.7538/yzk.2021.youxian.0684

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Abstract TL812; 为解决污染土壤中90Sr的快速、直接测定难题,研制了塑料闪烁光纤阵列探测器,通过塑料闪烁光纤空间排布设计、多路信号分析逻辑设定,实现从β、γ及宇宙射线信号中甄别出90Sr-90Y衰变的β射线信号,完成了土壤中90Sr的直接测量.探测器本底计数率为1.98 s-1,90Sr探测效率为1.4％,最小可探测活度为0.18 Bq/g(5 min),测量净计数率与参考土壤90Sr比活度呈线性关系,拟合优度为0.999.测量了极低放污染土壤,通过添加定量的90 Sr再次测量方式对结果进行验证,测量值与参考值符合较好.塑料闪烁光纤阵列探测器测量速度快、准确度高,可用于核设施退役、环境普查等大规模土壤样品90Sr快速、直接测定.
AbstractList TL812; 为解决污染土壤中90Sr的快速、直接测定难题,研制了塑料闪烁光纤阵列探测器,通过塑料闪烁光纤空间排布设计、多路信号分析逻辑设定,实现从β、γ及宇宙射线信号中甄别出90Sr-90Y衰变的β射线信号,完成了土壤中90Sr的直接测量.探测器本底计数率为1.98 s-1,90Sr探测效率为1.4％,最小可探测活度为0.18 Bq/g(5 min),测量净计数率与参考土壤90Sr比活度呈线性关系,拟合优度为0.999.测量了极低放污染土壤,通过添加定量的90 Sr再次测量方式对结果进行验证,测量值与参考值符合较好.塑料闪烁光纤阵列探测器测量速度快、准确度高,可用于核设施退役、环境普查等大规模土壤样品90Sr快速、直接测定.
Author 马鹏
党云博
舒复君
宋志君
孙宏清
张生栋
AuthorAffiliation 中国原子能科学研究院,北京 102413
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SUN Hongqing
MA Peng
DANG Yunbo
ZHANG Shengdong
SHU Fujun
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90Sr
闪烁光纤
土壤
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Snippet TL812; 为解决污染土壤中90Sr的快速、直接测定难题,研制了塑料闪烁光纤阵列探测器,通过塑料闪烁光纤空间排布设计、多路信号分析逻辑设定,实现从β、γ及宇宙射线信号中甄别...
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Title 塑料闪烁光纤阵列探测器研制及验证
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