A POSSIBILITY OF MONITORING INDOOR RADON DAUGHTERS BY USING CR-39 AS AN ALPHA-SPECTROMETER

Alpha-spectroscopy using CR-39 has been employed by us in monitoring r adon and its daughters. By means of measuring the track diameters (con sidering only the tracks whose ratio between the major and the minor d iameters is less than or equal to 1.100), one can find the energy dist ribution of the incident alpha-particles and, in this way, obtain info rmation about the plate-out rate of radon daughters on material surfac es and also about the concentration of radon and daughters present in the air. In this work, it is shown how radon and daughters monitoring can be improved by using this technique.