Realization and characterization of a 220Rn source for calibration purposes

The recent interest for measuring 220Rn activity in air and the following development of the corresponding measurement techniques require the improvement of standards for the calibration and characterization of the measurement devices. Due to the short half-life of the 220Rn, the adopted techniques...

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Published inApplied radiation and isotopes Vol. 81; pp. 221 - 225
Main Authors Buompane, R., Roca, V., Sabbarese, C., De Cicco, F., Mattone, C., Pugliese, M., Quarto, M.
Format Journal Article
LanguageEnglish
Published England Elsevier Ltd 01.11.2013
Subjects
Calibration
Italy
Radiation Dosage
Radiometry - methods
Radiometry - standards
Radon - analysis
Radon - isolation & purification
Reference Values
Thorium - analysis
Thorium - isolation & purification
Thoron chamber
Thoron in air
Thoron metrology
Thoron source
Italy
Thoron source
Thoron chamber
Thoron metrology
Thoron in air
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Summary:The recent interest for measuring 220Rn activity in air and the following development of the corresponding measurement techniques require the improvement of standards for the calibration and characterization of the measurement devices. Due to the short half-life of the 220Rn, the adopted techniques for the production of 222Rn sources are not always reliable. In this paper a methodology for realizing a thoron known activity starting from a 232Th source will be presented and discussed. •A thoron source realized by well characterized samples containing thorium.•Methodology for measuring exhalated thoron activity by gamma ray spectrometry.•Stable on time thoron specific activity concentration in air.•Radon isotopes spectroscopy by electrostatic collection.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0969-8043
1872-9800
DOI:10.1016/j.apradiso.2013.03.042