Testing and Calibration of CDs as Radon Detectors at Highly Variable Radon Concentrations and Temperatures

Dobromir Pressyanov, Luis Santiago Quindos Poncela, Strahil Georgiev, Ivelina Dimitrova, Krasimir Mitev, Carlos Sainz, Ismael Fuente and Daniel Rabago
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Dobromir Pressyanov: Faculty of Physics, “St. Kliment Ohridski”, Sofia University, 1164 Sofia, Bulgaria
Luis Santiago Quindos Poncela: Radon Group, University of Cantabria, 39005 Santander, Cantabria, Spain
Strahil Georgiev: Faculty of Physics, “St. Kliment Ohridski”, Sofia University, 1164 Sofia, Bulgaria
Ivelina Dimitrova: Faculty of Physics, “St. Kliment Ohridski”, Sofia University, 1164 Sofia, Bulgaria
Krasimir Mitev: Faculty of Physics, “St. Kliment Ohridski”, Sofia University, 1164 Sofia, Bulgaria
Carlos Sainz: Radon Group, University of Cantabria, 39005 Santander, Cantabria, Spain
Ismael Fuente: Radon Group, University of Cantabria, 39005 Santander, Cantabria, Spain
Daniel Rabago: Radon Group, University of Cantabria, 39005 Santander, Cantabria, Spain

IJERPH, 2019, vol. 16, issue 17, 1-9

Abstract: The application of the compact disk (CD) method for radon measurements at mines, caves and other workplaces needs testing under highly variable exposure conditions. We present the results from a blind comparison of CDs exposed in the Laboratory of Natural Radiation (Saelices el Chico, Spain). During the exposure the temperature varied from 6.5 to 24.9 °C (average 12.6 °C) and the 222 Rn activity concentrations varied from <10 Bq m −3 to 147 kBq m −3 . Good correspondence was observed between the integrated 222 Rn activity concentration determined by the reference instruments in the laboratory (122,500 ± 6100 kBq h m −3 ) and that assessed by analysis of the CDs at a depth 80 µm beneath the front surface (118,000 ± 12,000 kBq h m −3 ) and at a depth of 120 µm (106,000 ± 12,000 kBq h m −3 ). The theoretical modeling of the CD response under variable temperature and radon concentration suggested that the small bias is probably due to the time variation of the calibration factor because of the time variations of the temperature.

Keywords: radon; CD-method; blind comparison; extremely variable concentrations; unstable temperature (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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