Preparation of a radon-free thoron source for a thoron calibration chamber

During long-term radon/thoron surveys, solid-state nuclear track detectors (SSNTDs) are commonly used. For the application of these integral devices, it is important to solve the commensurate calibration. At the calibration process, radon can be interfering with thoron; therefore, radon-free thoron...

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Published inJournal of radioanalytical and nuclear chemistry Vol. 311; no. 2; pp. 1169 - 1175
Main Authors Fábián, Ferenc, Csordás, Anita, Sas, Zoltán, Kovács, Tibor
Format Journal Article
LanguageEnglish
Published Dordrecht Springer Netherlands 01.02.2017
Springer
Springer Nature B.V
Subjects
Calibration
Chemical separation
Chemistry
Chemistry and Materials Science
Diagnostic Radiology
Ferric chloride
Hadrons
Heat treatment
Heavy Ions
Inorganic Chemistry
Nuclear Chemistry
Nuclear Physics
Physical Chemistry
Precipitation (Meteorology)
Radon
Radon isotopes
Surveys
Thoron
Ac separation
Thoron source
Calibration
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Summary:During long-term radon/thoron surveys, solid-state nuclear track detectors (SSNTDs) are commonly used. For the application of these integral devices, it is important to solve the commensurate calibration. At the calibration process, radon can be interfering with thoron; therefore, radon-free thoron atmosphere is required for the accurate calibration. In this study, radon-free thoron source with a high emanation capability was prepared by chemical separation of 228 Ac. Based on the results of this and the previously performed experiments, a method combines precipitation with FeCl 3 and embedding into ceramic matrix containing low feldspar content and heat treatment on 200 °C has been proposed.
Bibliography:ObjectType-Article-1
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ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-016-4944-9