A personal radon dosemeter

In the last decade the radon isuue has become one of the major problems of radiation protection. Animal studies as well as epidemological studies showed an increades lung cancer risk. A new personal radon-dosemeter on the basis of a CR-39 ( polyallyl digycol carbonate) track-etch detector has been developed. The read-out of the detector is based on the image-processing technique. The actual efficiency of the new dosemeter, obtained with semi-automatic personal-computer based image-analysis system, is 1.43 +- 0.15 tracks/cm²/(kBq/m³h), which is about three times that of the widely used Karlsruhe-type detector based on polycarbonate detectors.