Response of track-etch dosemeters to environmental radon

The reliability of outdoor radon concentration measurements using the track-etch technique is affected by the environmental conditions. Studies have been made to improve stability of nuclear tracks in detector material and to achieve a stable dosemeter response. A dosemeter was developed utilizing chemically etched MA-ND/α (CR-39) detector which is thermally insulated and protected against solar irradiation. The calibration showed that its response amounts to 0.21 ± 0.03 tracks m-2/Bqm-3 day and was found to be in good agreement with theoretical prediction. (author)