Theoretical foundation for a simple method for simultaneous measurements of the unattached fraction and activity median diameter of attached radon progeny

Authors
Citation
Kn. Yu, Theoretical foundation for a simple method for simultaneous measurements of the unattached fraction and activity median diameter of attached radon progeny, APPL RAD IS, 54(6), 2001, pp. 961-965
Citations number
23
Categorie Soggetti
Multidisciplinary
Journal title
APPLIED RADIATION AND ISOTOPES
ISSN journal
09698043 → ACNP
Volume
54
Issue
6
Year of publication
2001
Pages
961 - 965
Database
ISI
SICI code
0969-8043(200106)54:6<961:TFFASM>2.0.ZU;2-A
Abstract
Calculation of lung dose from established lung dosimetry models requires us e of the unattached fraction of potential alpha energy concentration (PAEC) of radon progeny and the activity median diameter (AMD) of attached radon progeny, in addition to the total PAEC. In the present work, for indoor env ironments without the nucleation mode of aerosols, a method based on the wi re screen penetration theory using two wire screens and a filter is propose d for simultaneous measurements of these two parameters. It is shown that t he traditional wire screen method can overestimate or sometimes underestima te the unattached fraction, depending on the properties of the wire screen and the true unattached fraction. The present method eliminates such uncert ainties. (C) 2001 Elsevier Science Ltd. All rights reserved.