title: The influence of environmental factors on the deposition velocity of thoron progeny.
abstract: Passive measuring devices are comprehensively employed in thoron progeny surveys, while the deposition velocity of thoron progeny is the most critical parameter, which varies in different environments. In this study, to analyse the influence of environmental factors on thoron progeny deposition velocity, an improved model was proposed on the basis of Lai's aerosol deposition model and the Jacobi's model, and a series of measurements were carried out to verify the model. According to the calculations, deposition velocity decreases with increasing aerosol diameter and also aerosol concentration, while increases with increasing ventilation rate. In typical indoor environments, a typical value of 1.26 × 10(-5)m s(-1) is recommended, with a range between 7.6 × 10(-7) and 3.2 × 10(-4) m s(-1).
authors.affiliation: State Key Laboratory of Nuclear Physics and Technology,  Peking University, Beijing 100871,  China.
authors.forename: H
authors.initials: H
authors.lastname: Li
authors.forename: L
authors.initials: L
authors.lastname: Zhang
authors.forename: Q
authors.initials: Q
authors.lastname: Guo
mesh_terms: D000336:Aerosols; D000396:Air Pollutants, Radioactive / Q000032:analysis*; D016902:Air Pollution, Indoor / Q000032:analysis*; D002681:China; D004784:Environmental Monitoring / Q000379:methods; D004867:Equipment Design; D006798:Housing; D015233:Models, Statistical; D008962:Models, Theoretical; D011834:Radiation Monitoring / Q000295:instrumentation / Q000379:methods*; D011886:Radon / Q000032:analysis*; D017687:Radon Daughters / Q000032:analysis*; D015203:Reproducibility of Results
chemical_list: D000336:Aerosols; D000396:Air Pollutants, Radioactive; D017687:Radon Daughters; D011886:Radon