CR-39 detector-based Radon dosimetry system calibration in the self-decay mode

Abstract This paper describes cooperation of the Slovak University Technology in Bratislava (STU) and Institute Metrology (SMU) verification calibration factors for solid-state nuclear track detector utilized radon dosimetry establishing traceability STU laboratory. The SMU operates Air Radon Standard which consists a chamber calibrated atmosphere monitoring system. A specification is that concentration changes during exposure time. created by insertion specified amount gas into chamber, subsequently decays over laboratory equipped with TASLImage™ system corresponding TASTRAK CR-39 type detectors diffusion chambers. These chambers allow to diffuse inside prevent dust progeny enter container. Each container characterized its own rate, should be considered metrology approach, especially when operated decay mode. Therefore, several measurements were carried out determine optimal condition conversion factor verification. experiments conducted low concentrations, but still range can reliably provide (100 Bq m −3 100 kBq ) combination times exposure. Based on achieved results default was verified, an approach proposed. To improve capability measurement, custom design incorporates compact dimensions aerosol filter at entrance allows increase entry hole thus increases rate. Subsequently, homogeneity tested.