title: Environmental radon studies using solid state nuclear track detectors.
abstract: The results of radon activity recorded in 70 dwellings of Nurpur area, Kangra district, Himachal Pradesh, India are reported. LR-115 Type 2 films in the bare mode were exposed for four seasons of three months each covering a period of one year for the measurement of indoor radon levels. The calibration constant of 0.020 tracks cm(-2) d(-1) per Bq m(-3) has been used to express radon activity in Bq m(-3). The annual average indoor radon concentrations in 17 different villages of the area are found to vary from 168+/-46 to 429+/-71. Most of the indoor radon values lie in the range of action levels (200-600 Bq m(-3)) recommended by International Commission on Radiological Protection.
authors.affiliation: Department of Physics, Guru Nanak Dev University, Amritsar 143 005, India. surinder51@yahoo.com
authors.forename: Surinder
authors.initials: S
authors.lastname: Singh
authors.forename: Dinesh Kumar
authors.initials: DK
authors.lastname: Sharma
authors.forename: Ajay
authors.initials: A
authors.lastname: Kumar
mesh_terms: D016902:Air Pollution, Indoor / Q000032:analysis*; D002138:Calibration; D004784:Environmental Monitoring; D007194:India; D011886:Radon / Q000032:analysis*; D012016:Reference Values; D012621:Seasons
chemical_list: D011886:Radon