检索结果-南通市图书馆

Standardization of tritiated water by the CIEMAT/NIST and TDCR methods

Science China(Technological Sciences) 2015年第3期58卷 559-564页

作者： WU YongLe LIU HaoRan LIANG JunCheng LIU JiaCheng XIONG WenJun YUE HuiGuo LIU SenLin YANG YuanDi YUAN DaQing China Institute of Atomic Energy Nuclear and Radiation Safety Center National Institute of Metrology

The activity of tritiated water has been standardized by two liquid scintillation counting methods:The CIEMAT/NIST method with the54Mn-standard efficiency tracing and the triple-to-double coincidence ratio(TDCR)*** samples were prepared with Ultima Gold TM AB liquid scintillation cocktail in low-potassium glass *** the application of the CIEMAT/NIST method,the computer program EMILIA was used to calculate the efficiency of3H and54Mn according to the KL1L2L3M atomic rearrangement *** the detection efficiency of the TDCR counter was calculated using TDCR07 code,which makes it possible to allow for the potential asymmetry between the three photomultiplier *** influence of stopping power and k B factor is discussed in the *** a power approach is adopted for the stopping power for electrons below 1ke V and k B is chosen to be 0.0075 cm/Me V,the relative deviation will be only 0.3%between the two methods.

关键词： tritiated water the CIEMAT/NIST method the TDCR method k B factor the stopping power liquid scintillation counting

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Design and preliminary test of tritiated water online detector system based on plastic scintillators

引用

Nuclear Science and Techniques 2022年第10期33卷 68-78页

作者： Chun-Hui Dong Kai-Yong Liao Rui-Yang Xu Hong-Wu Liu Qing-Xian Zhang Chengdu University of Technology Chengdu 610059China

In this study,an online detector system based on plastic scintillators is designed to monitor the activity of tritiated water in the liquid effluents of nuclear power *** feasibility of the detector is verified via simulation on Geant4,and the optimal detector structure size is determined.A back-end electronics system is designed and an experimental measurement platform forβ-rays based on a ^(40)KCl solution is *** ^(40)KC solutions with different activities ranging from 10 to4500 Bq/L are measured,and 1300 V is determined as the optimal operating high voltage of the photomultiplier tubes.A linear fit is performed in 10-min counts,and the maximum linear goodness of fit(R^(2))achieved is ***-term stability measurements are performed for two detectors,one filled with air and the other with a ^(40)KCl solution exhibiting an activity of 2000 Bq/*** relative deviation of the counts of the detector system every 10 min is 0.998%when the ^(40)KCl solution is used,and the maximum Gaussian R^(2) of the counts is 0.9849.

关键词： tritiated water Geant4 Plastic scintillator Electronics system

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Simulation results of the online tritiated water measurement system

引用

Nuclear Science and Techniques 2021年第11期32卷 96-104页

作者： Rui-Yang Xu Chun-Hui Dong Xiao-Qing Mao Qing-Xian Zhang Hui Gong Kai-yong Liao Zhi-Gang Lu Liang-quan Ge Zhi-Yu Gao Ting-Fang Luo Qi-Chang Huang Chengdu University of Technology Chengdu 610059China Nuclear Power Institute of China Chengdu 610005China

Currently,the liquid scintillation method is widely used to measure the activity of tritiated water in the primary circuit of nuclear power plants,which leads to the continuous production of radioactive waste during *** addition,the real-time activity information of tritiated water cannot be *** solve this problem,herein we present an online tritiated water measurement method based on plastic scintillators that used the optical transport process in the Geant 4 software toolkit to build a model of plastic scintillation detection for tritiated *** simulation,the basic geometric dimensions of the detector were *** this dimension,using one detector to measure for 3 h,when the tritiated water activity was 100 Bq/L,its resolution was 16%(16 Bq/L).In addition,calculations were performed for the presence of other background signals to obtain the minimum detectable concentration.

关键词： tritiated water Geant 4 Plastic scintillators Measurement system

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

呼吸性铀矿尘接触浓度限值的研究

引用

中华放射医学与防护杂志 1994年第3期14卷 194-194页

作者：高增林谢满廷伦汉清常学奇常学章太原中国辐射防护研究院

呼吸性铀矿尘接触浓度限值的研究高增林，谢满廷，伦汉清，常学奇，常学章本研究的目的在于，通过对呼吸性铀矿尘实测与劳动卫生及流行病学调查，参照国内外有关资料，分析我国呼吸性铀矿尘浓度现状与特点。提出呼吸性铀矿上接触浓度限... 详细信息

呼吸性铀矿尘接触浓度限值的研究高增林，谢满廷，伦汉清，常学奇，常学章本研究的目的在于，通过对呼吸性铀矿尘实测与劳动卫生及流行病学调查，参照国内外有关资料，分析我国呼吸性铀矿尘浓度现状与特点。提出呼吸性铀矿上接触浓度限值的建议，为我国铀矿山呼吸性粉尘接...

关键词： tritiated water brain development teratogenesis mice

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：