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Radiation Protection Dosimetry Advance Access originally published online on April 8, 2008
Radiation Protection Dosimetry 2008 130(1):22-25; doi:10.1093/rpd/ncn121
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© The Author 2008. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

New technique for the determination of radon diffusion coefficient in radon-proof membranes

M. Jiránek1,* and A. Fronka2

1 Czech Technical University, Faculty of Civil Engineering, Thákurova 7, 166 29 Praha 6, Czech Republic
2 National Radiation Protection Institute, Bartoskova 28, 140 00 Praha 4, Czech Republic

* Corresponding author: jiranek{at}fsv.cvut.cz

This paper describes a new device and a method to determine the radon diffusion coefficient in damp-proof membranes developed in the Czech Republic. The main advantage of the device is that it enables tests to be carried out in all the known measuring modes used throughout Europe. Two recently developed computer programs are presented for the numerical modelling of the time-dependent radon transport through damp-proof membranes. According to this method, the radon diffusion coefficient is derived from the process of fitting the numerical solution to the measured curve of radon concentration in a receiver container. Numerical simulation and measured data are also compared. Reasons for disagreements between different methods and specific configurations of the measuring device are also discussed.


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