A new method for total-count γ-ray measurement of radon absord in activated carbon

LE Renchang WANG Ping DONG Xuefeng HE Zhijie YE Quanyi HONG Jinquan ZHOU Baoyong CHEN Jiandi

doi:null

您当前的位置：

首页 >

文章列表页 >

A new method for total-count γ-ray measurement of radon absord in activated carbon

更新时间：2021-03-12

- A new method for total-count γ-ray measurement of radon absord in activated carbon
- NUCLEAR TECHNIQUES Vol. 32, Issue 8, (2009)
- 作者机构：
  
  福建师范大学物理与光电信息科技学院
- 作者简介：
- 基金信息：
  
  国家自然科学基金(10575022);福建省自然科学基金(2007J0349)资助
- DOI：
  CLC： TL81
- Published：01 August 2009
- 稿件说明：
移动端阅览
[1]乐仁昌,王平,董雪丰,何志杰,叶全意,洪锦泉,周宝庸,陈健俤.活性炭测氡γ总计数的理论计算及实验验证[J].核技术,2009,32(08):580-583.

LE Renchang WANG Ping DONG Xuefeng HE Zhijie YE Quanyi HONG Jinquan ZHOU Baoyong CHEN Jiandi. A new method for total-count γ-ray measurement of radon absord in activated carbon[J]. Nuclear techniques, 2009, 32(8): 580-583.
[1]乐仁昌,王平,董雪丰,何志杰,叶全意,洪锦泉,周宝庸,陈健俤.活性炭测氡γ总计数的理论计算及实验验证[J].核技术,2009,32(08):580-583. DOI：

LE Renchang WANG Ping DONG Xuefeng HE Zhijie YE Quanyi HONG Jinquan ZHOU Baoyong CHEN Jiandi. A new method for total-count γ-ray measurement of radon absord in activated carbon[J]. Nuclear techniques, 2009, 32(8): 580-583. DOI：

摘要

根据氡及其子体的相继衰变规律

对均匀吸附环境氡的活性炭的γ总计数进行了理论推导

得到了活性炭γ总计数的计算公式;并对活性炭γ总计数进行了模拟计算。结果表明:活性炭取出后γ总计数随时间的变化曲线与实测曲线相吻合;在曲线的前段

计数先增大后减小

为活性炭的静置区

静置时长（即静置区的宽度）与活性炭吸附氡的时长密切相关

与氡浓度大小无关

吸附时间越长

所需静置时间越短;在曲线的后段

计数以e-0.000125t函数逐渐衰减

这一规律与氡浓度的大小无关。

Abstract

In this paper

a method for total-count γ-ray measurement of radon in activated carbon is presented

with correction for decay and time delay for the measurement based on the decay of radon and its progeny. Simulation of the total-counts of γ-rays from radon-absorbed activated carbon was performed. The results show that the time-dependent calculated curve of γ-ray total-counts agrees well with the measured one. The front part of the curve

where the counts increase first and decrease later

is the time delay for the measurement. The duration of delayed measurement is closely related to the duration of radon absorbed by activated carbon

but it has nothing to do with the radon concentration. And the longer the adsorption duration

the shorter is the time delay. Then

the counts follow the function of e-0.000125 t

which is also independent of the concentration of radon absorbed by activated carbon.

关键词

Keywords

references

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Ion pulse ionization chamber for online measurements of the radon activity concentration

Dynamic adsorption properties of xenon on activated carbons and their structure characterization

Error-analysis of correction method in radon measurement with activated charcoal according to the Chinese Standard of GB/T14582-1993

Environmental radioactivity survey in an abandoned uranium mine

Experimental studies on radon dissolution and emission

Related Author

WEI Xianglun

LU Chengui

DUAN Limin

MA Peng

YANG Herun

HU Rongjiang

HE Zhoubo

LIANG Juncheng

Related Institution

Institute of Modern Physics, Chinese Academy of Sciences

University of Chinese Academy of Sciences

National Institute of Metrology

中国科学院大学

1,2) LIU Jing~1 QIAN Yuan~1 ZENG Youshi~1 DU Lin~1 PI Li~1 LIU Wei~1 1

AI问答

Address：2019 Jialuo Road, Jiading, Shanghai, China Postal code：201800
Tel：021-39194977 Email：LHB@sinap.ac.cn
Technical support is provided by Beijing Founder electronics co., LTD 沪ICP备05005479号-1 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.
Total Visits：881187 Visits Today：714

⁰