Measurements of222Rn migration in soil |
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Authors: | K G Ioannides C Papachristodoulou D T Karamanis K C Stamoulis T J Mertzimekis |
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Institution: | (1) Nuclear Physics Laboratory, The University of Ioannina, GR-451 10 Ioannina, Greece |
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Abstract: | The concentration of radon (222Rn) was measured in the soil near the ground surface, using CR/39 solid state nuclear track detectors. The measurements were carried out in PVC tubes at 0.25 m intervals up to 1.25 m. The detectors were etched in 7N NaOH solutions at 80°C. The -tracks from radon's decay were counted using a microscope. A microscope-camera-computer system developed for automatic counting was also used. The results provide evidence for the non-diffusive transport of radon in soils. A transport length of (46.9±3.2) cm was estimated for radon transport near ground surface. Also the variation of soil's radon concentration was correlate to humidity and atmospheric pressure. |
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