Intercomparison of activity size distribution of thoron progeny and a mixture of radon and thoron progeny

摘要

This First International Intercomparison and Intercalibration Meeting for Thoron and its Progeny and Thoron/Radon Mixture was organized to compare techniques for determining Concentrations and particle size distributions of ~220Rn and mixtures of ~222Rn and ~20Rn. The Meeting was held at Elliot Lake, Canada, November 2-6, 1992. We have reported results of Activity size distributions and measurements of unattached fractions of both thoron progeny And mixtures of thoron/radon.