caa a22 4500 445812877 CHVBK 20180317145217.0 cr unu---uuuuu 170323e20110801xx s 000 0 eng 10.1007/s00411-011-0369-6 doi (NATIONALLICENCE)springer-10.1007/s00411-011-0369-6 Doses from beta radiation in sensitive layers of human lung and dose conversion factors due to 222Rn/220Rn progeny [Elektronische Daten] [V. Markovic, N. Stevanovic, D. Nikezic] Great deal of work has been devoted to determine doses from alpha particles emitted by 222Rn and 220Rn progeny. In contrast, contribution of beta particles to total dose has been neglected by most of the authors. The present work describes a study of the detriment of 222Rn and 220Rn progeny to the human lung due to beta particles. The dose conversion factor (DCF) was introduced to relate effective dose and exposure to radon progeny; it is defined as effective dose per unit exposure to inhaled radon or thoron progeny. Doses and DCFs were determined for beta radiation in sensitive layers of bronchi (BB) and bronchioles (bb), taking into account inhaled 222Rn and 220Rn progeny deposited in mucus and cilia layer. The nuclei columnar secretory and short basal cells were considered to be sensitive target layers. For dose calculation, electron-absorbed fractions (AFs) in the sensitive layers of the BB and bb regions were used. Activities in the fast and slow mucus of the BB and bb regions were obtained using the LUNGDOSE software developed earlier. Calculated DCFs due to beta radiation were 0.21mSv/WLM for 222Rn and 0.06mSv/WLM for 220Rn progeny. In addition, the influence of Jacobi room parameters on DCFs was investigated, and it was shown that DCFs vary with these parameters by up to 50%. Springer-Verlag, 2011 Markovic V. Department of Physics, Faculty of Science, University of Kragujevac, R. Domanovic 12, 34000, Kragujevac, Serbia aut Stevanovic N. Department of Physics, Faculty of Science, University of Kragujevac, R. Domanovic 12, 34000, Kragujevac, Serbia aut Nikezic D. Department of Physics, Faculty of Science, University of Kragujevac, R. Domanovic 12, 34000, Kragujevac, Serbia aut Radiation and Environmental Biophysics Springer-Verlag 50/3(2011-08-01), 431-440 0301-634X 50:3<431 2011 50 411 https://doi.org/10.1007/s00411-011-0369-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00411-011-0369-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Markovic V. Department of Physics, Faculty of Science, University of Kragujevac, R. Domanovic 12, 34000, Kragujevac, Serbia aut NATIONALLICENCE 700 1- Stevanovic N. Department of Physics, Faculty of Science, University of Kragujevac, R. Domanovic 12, 34000, Kragujevac, Serbia aut NATIONALLICENCE 700 1- Nikezic D. Department of Physics, Faculty of Science, University of Kragujevac, R. Domanovic 12, 34000, Kragujevac, Serbia aut NATIONALLICENCE 773 0- Radiation and Environmental Biophysics Springer-Verlag 50/3(2011-08-01), 431-440 0301-634X 50:3<431 2011 50 411 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer