An absolute radon 222 activity measurement system at LNE-LNHB

被引：10
|
作者：
Sabot, B. [1 ]
Pierre, S. [1 ]
Cassette, P. [1 ]
机构：
[1] CEA, LIST, Lab Natl Henri Becquerel LNE LNHB, Ctr Saclay, F-91191 Gif Sur Yvette, France
来源：
APPLIED RADIATION AND ISOTOPES | 2016年 / 118卷
关键词：
Rn-222; Po-218; Po-214; Radon; Primary standard; STANDARDIZATION; RN-222;
D O I：
10.1016/j.apradiso.2016.09.009
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
A good metrological traceability of radon and progenies is necessary to accurately measure the radon concentration. In 1995, at the LNE-LNHB, J.L. Picolo developed a reference method using a defined-solid angle (DSA) alpha spectrometer to measure a frozen radon source. With this method it was possible to measure radon standards with a relative standard uncertainty of 0.5%. This paper presents the design and the characterization of a new upgraded measurement system; all parameters and their uncertainties are discussed. This new system allows the measurement of radon sources from 100 Bq to 4 MBq with a relative standard uncertainty of 0.3%.
引用
收藏
页码：167 / 174
页数：8
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