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Computer Physics Communications. 01/2007; 177:329-338.
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ABSTRACT: An investigation of atmospheric radon levels in the Perama Cave, North-western Greece, has been carried out using CR-39 detectors. The detectors were placed at various locations along the guided cave pathway and exposed during different sampling periods. Mean concentrations amounting to 925 +/- 418 and 1,311 +/- 352 Bq m-3 were recorded in the summer and winter months, respectively. As the Perama Cave is one of the most popular in Greece, attracting more than 85,000 tourists per year, the quantification of effective doses to staff and visitors was an issue of importance. Doses less than 5.1 microSv per visit were calculated for tourists and around 1.8 mSv y-1 for seasonal guides, employed for periods of high visiting frequency. The annual exposure of permanent guides was estimated to fall between 3 and 10 mSv, which is the range of action levels recommended by the ICRP.
Health Physics 07/2004; 86(6):619-24. · 1.68 Impact Factor
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ABSTRACT: A computer program named TRIAC written in MATLAB has been developed for track recognition and track parameters measurements from images of the Solid State Nuclear Track Detectors CR39. The program using image analysis tools counts the number of tracks for dosimetry proposes and classifies the tracks according to their radii for the spectrometry of alpha-particles. Comparison of manual scanning counts with those output by the automatic system are presented for detectors exposed to a radon rich environment. The system was also tested to differentiate tracks recorded by alpha-particles of different energies.
Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms 244(2):392-396. · 1.21 Impact Factor
