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HomeSolid State PhenomenaSolid State Phenomena Vol. 238A Preliminary Study of the Radon and Thoron...

A Preliminary Study of the Radon and Thoron Concentration Distribution inside a Cellar Using Nuclear Track Detectors (NTDs)

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Abstract:

In this paper we present the preliminary results of a study of the radon and thoron (²²²Rn and ²²⁰Rn) and their progeny, concentration distribution inside the cellar as recorded by a 200×200 cm mesh of CR-39 bare detectors. The mesh comprised one hundred and sixty two 1.9×0.9 cm CR-39 (Lantrack^®) polycarbonate chips. The distribution of radon and thoron shows a complex pattern. Both sides of the mesh displayed a significant concentration gradient of radon and thoron levels, with a maximum near to the top and bottom of the detection grid, and minimum around the center. This spatially inhomogeneous distribution recorded by the detectors could be the result of the distance from the walls, gas kinematics, diffusion coefficient, room geometrical configuration, aerosol behaviors, and objects inside the room, among others. It suggests that the analysis of these complex distribution patterns may be applicable for the estimation and evaluation of indoor radon concentration levels, considering each particular location and characteristics of the place.

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Solid State Nuclear Track Detectors and their Applications

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Periodical:

Solid State Phenomena (Volume 238)

Pages:

127-133

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.238.127

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Online since:

August 2015

Authors:

Guillermo Espinosa*, Jose Ignacio Golzarri, Allan Chavarria

Keywords:

CR-39 Bare Detectors, Indoor Radon/Thoron Measurement, Radon, Thoron

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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