Radon-daughter Exposure Measurement with Track Etch Films

Abstract

The registration of alpha particles in cellulose nitrate dielectric films serves as a basis for an exposure integrating device to measure the individual worker's exposure to alpha particle irradiations from radon and radon daughter products in mine atmospheres. These films are insensitive to beta, gamma and light radiations and to alpha activity plated-out on its surface. Tests in mine atmospheres indicated good correlation between film track densities and measurements of the mine atmosphere by standard filtered air samples.