title: Estimation of Radiological Dose From Progeny of222Rn and220Rn Using DTPS/DRPS and Wire-Mesh-Capped Progeny Sensors.
abstract: Radon (222Rn) and its decay products are the major sources of natural radiation exposure to general population. The activity concentrations of unattached and attached short-lived222Rn and thoron (220Rn) progeny in indoor environment of some dwellings of the Jalandhar and Kapurthala districts of Punjab had been calculated using the deposition-based progeny sensors (DRPS/DTPS) and wire-mesh-capped (DRPS/DTPS) progeny sensors. The observed concentration of attached222Rn and220Rn progeny showed the variation from 5 to 21 Bq·m-3and 0.3 to 1.7 Bq·m-3, respectively. The activity concentration of the unattached222Rn and220Rn progeny varies from 1 to 5 Bq·m-3and 0.1 to 0.6 Bq·m-3, respectively. The average unattached fraction of222Rn and220Rn progeny is 0.2 and 0.1. The average value of the indoor aerosol concentration attachment rate of222Rn and220Rn progeny is 2251 cm-3, 24 ms-1, and 617 ms-1. Relation among the unattached fraction and attachment rate is established, and the obtained results of dose conversion factors show the significance of the nano-sized222Rn decay products in222Rn dosimetry.
authors.affiliation: Department of Physics, Dr B R Ambedkar National Institute of Technology, Jalandhar, Punjab, India.
authors.forename: Rohit
authors.initials: R
authors.lastname: Mehra
authors.affiliation: Department of Physics, Dr B R Ambedkar National Institute of Technology, Jalandhar, Punjab, India.
authors.forename: Rajan
authors.initials: R
authors.lastname: Jakhu
authors.affiliation: Department of Physics, Dr B R Ambedkar National Institute of Technology, Jalandhar, Punjab, India.
authors.forename: Pargin
authors.initials: P
authors.lastname: Bangotra
authors.affiliation: Department of Physics, Dr B R Ambedkar National Institute of Technology, Jalandhar, Punjab, India.
authors.forename: Harish Mohan
authors.initials: HM
authors.lastname: Mittal
keywords: aerosol concentration; attached and unattached 222Rn and 220Rn progeny; attachment rate; dose conversion factors