title: MEASUREMENT OF RADON, THORON AND THEIR PROGENY IN DIFFERENT TYPES OF DWELLING IN ALMORA DISTRICT OF KUMAUN HIMALAYAN REGION.
abstract: The indoor concentrations of radon (222Rn), thoron (220Rn) and their daughter products were measured in the dwellings of Almora district in Kumaun Himalaya, India using pin-hole dosemeters and deposition progeny sensors. The measurements were made in the residential houses built of mud, stone with cement plaster and cemented house during winter season. Average [geometric mean (GM) values] radon and thoron concentrations for all dwellings were found to be 99.82 and 79.70 Bq m-3, respectively, while average equilibrium equivalent radon concentration and equilibrium equivalent thoron concentration (measured for the first time for this region) were measured at 35.22 and 2.52 Bq m-3, respectively. Radon concentration (GM values) was found to be 110.73, 97.00 and 93.85 Bq m-3for mud houses, stone with cemented plaster houses and cemented houses, respectively. On the other hand, thoron concentration values were 87.10, 75.79 and 75.68 Bq m-3for cemented houses, mud houses and stone with cemented plaster houses, respectively. Interpretations have been made on the basis of measured radon/thoron and progeny concentration values with respect to the difference of construction material of the dwellings.
authors.affiliation: Department of Physics, Govt. P.G. College, New Tehri, Tehri Garhwal 249001, India drksingh2010@gmail.com.
authors.forename: Kuldeep
authors.initials: K
authors.lastname: Singh
authors.affiliation: Department of Physics, Govt. P.G. College, New Tehri, Tehri Garhwal 249001, India.
authors.forename: Poonam
authors.initials: P
authors.lastname: Semwal
authors.affiliation: Department of Physics, HNB, Garhwal University, Badshahi Thaul Campus, Tehri Garhwal 249199, India.
authors.forename: Preeti
authors.initials: P
authors.lastname: Pant
authors.affiliation: Department of Physics, Govt. P.G. College, New Tehri, Tehri Garhwal 249001, India.
authors.forename: G S
authors.initials: GS
authors.lastname: Gusain
authors.affiliation: Radiological Physics and Advisory Division, Bhabha Atomic Research Center, Mumbai 400094, India.
authors.forename: Manish
authors.initials: M
authors.lastname: Joshi
authors.affiliation: Radiological Physics and Advisory Division, Bhabha Atomic Research Center, Mumbai 400094, India.
authors.forename: B K
authors.initials: BK
authors.lastname: Sapra
authors.affiliation: Department of Physics, HNB, Garhwal University, Badshahi Thaul Campus, Tehri Garhwal 249199, India.
authors.forename: R C
authors.initials: RC
authors.lastname: Ramola
mesh_terms: D000396:Air Pollutants, Radioactive / Q000032:analysis*; D016902:Air Pollution, Indoor / Q000032:analysis*; D003252:Construction Materials; D005843:Geography; D006798:Housing; D007194:India; D011834:Radiation Monitoring / Q000379:methods; D011886:Radon / Q000032:analysis*; D017687:Radon Daughters / Q000032:analysis*; D012621:Seasons
chemical_list: D000396:Air Pollutants, Radioactive; D017687:Radon Daughters; D011886:Radon