Carboxen – 564 a New Carbon Molecular Sieve Sorbent Used for Radon and Thoron Monitoring
نویسندگان
چکیده
The possibility to combine the track-etched CR-39 or Makrofol detectors with charcoal to increase the detector sensitivity was shown in the last years. Special requests are necessary in the case of a personal dosimeter when the detector must be active only during working activity. Regarding the combination of charcoal with TL detectors our preliminary investigations indicate that the TLD intensity in normal indoor air (~80 Bq/m 3 ) is about two times higher for TLD + charcoal in comparison with simple uncombined TLD. This paper presents a study on the charcoal combined with TLDs and some remarks about charcoal properties. The results show a linear dependence between TLD+charcoal signal versus radon air concentration. Using Carboxen 564, a special carbon molecular sieve, the detection limit for indoor radon can be lowered under 60 Bq/m 3 /day, rather small and promising to be used for a radon personal dosimeter at workplaces
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