The use of calcium silicate bricks for retrospective dosimetry

The suitability of calcium silicate bricks (CSBs) for the retrospective measurement of gamma dose using luminescence techniques has been investigated. Bricks of this type are distinguished from fired clay bricks by containing negligible clay and requiring comparatively low temperature treatment duri...

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Bibliographic Details
Published in:Radiation measurements 2004-02, Vol.38 (1), p.91-99
Main Authors: Bailiff, I.K., Mikhailik, V.B.
Format: Article
Language:English
Subjects:
Bricks
Earth sciences
Earth, ocean, space
Engineering and environment geology. Geothermics
Engineering geology
Exact sciences and technology
Geochronology
Isotope geochemistry. Geochronology
Quartz inclusions
Retrospective dosimetry
Thermoluminescence
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Summary:The suitability of calcium silicate bricks (CSBs) for the retrospective measurement of gamma dose using luminescence techniques has been investigated. Bricks of this type are distinguished from fired clay bricks by containing negligible clay and requiring comparatively low temperature treatment during manufacture. They have been used widely in the construction of buildings in the Former Soviet Union since the 1970s but hitherto have not been used for retrospective dosimetry measurements. A procedure based on the use of the 210°C thermoluminescence (TL) peak of quartz was tested with granular quartz extracted from three types of CSB, one of which had been taken from a settlement downwind of Chernobyl. The degree to which the residual geological TL signal within the temperature range of the 210°C TL peak had been reduced during manufacture varied with brick type; the levels of residual TL corresponded, in the samples tested, to absorbed doses in the range (
ISSN:1350-4487
1879-0925
DOI:10.1016/j.radmeas.2003.07.004