title: INNOVATIVE EASY-TO-USE PASSIVE TECHNIQUE FOR 222RN AND 220RN DECAY PRODUCT DETECTION.
abstract: The decay products of radon and thoron are essentially the radioisotopes of polonium, bismuth and lead, and are solid particulates, which deposit in different parts of the respiratory tract upon inhalation, subsequently emitting high-energy alpha particles upon their radioactive decay. Development of passive deposition-based direct progeny sensors known as direct radon and thoron progeny sensors have provided an easy-to-use technique for time-integrated measurements of the decay products only. These dosemeters are apt for large-scale population dosimetry to assign inhalation doses to the public. The paper gives an insight into the technique, the calibration, comparison with the prevalently used active grab filter paper sampling technique, alpha track diameter analysis in these progeny sensors, progeny deposition velocity measurements carried out using these detector systems in the indoor as well as outdoor environment, and applications of these sensors for time-integrated unattached fraction estimation.
authors.affiliation: Radiological Physics and Advisory Division, Bhabha Atomic Research Centre, Mumbai 400 094, India rosaline.mishra@gmail.com.
authors.forename: Rosaline
authors.initials: R
authors.lastname: Mishra
authors.affiliation: Radiological Physics and Advisory Division, Bhabha Atomic Research Centre, Mumbai 400 094, India.
authors.forename: R
authors.initials: R
authors.lastname: Rout
authors.affiliation: Radiological Physics and Advisory Division, Bhabha Atomic Research Centre, Mumbai 400 094, India.
authors.forename: R
authors.initials: R
authors.lastname: Prajith
authors.affiliation: Radiological Physics and Advisory Division, Bhabha Atomic Research Centre, Mumbai 400 094, India.
authors.forename: S
authors.initials: S
authors.lastname: Jalalluddin
authors.affiliation: Radiological Physics and Advisory Division, Bhabha Atomic Research Centre, Mumbai 400 094, India.
authors.forename: B K
authors.initials: BK
authors.lastname: Sapra
authors.affiliation: Indian Institute of Technology, Bombay, India.
authors.forename: Y S
authors.initials: YS
authors.lastname: Mayya
mesh_terms: D000396:Air Pollutants, Radioactive / Q000032:analysis*; D016902:Air Pollution, Indoor / Q000032:analysis; D001729:Bismuth / Q000032:analysis*; D002138:Calibration; D004777:Environment; D006798:Housing; D007854:Lead / Q000032:analysis*; D011059:Polonium / Q000032:analysis*; D011834:Radiation Monitoring / Q000379:methods*; D011874:Radiometry / Q000379:methods; D011886:Radon / Q000032:analysis*; D017687:Radon Daughters / Q000032:analysis*; D013997:Time Factors
chemical_list: D000396:Air Pollutants, Radioactive; D017687:Radon Daughters; D007854:Lead; D011059:Polonium; D011886:Radon; D001729:Bismuth