title: Estimation of dose contribution from 226Ra, 232Th and 40K radon exhalation rates in soil samples from Shivalik foot hills in India.
abstract: The concentration of radium, thorium and potassium and radon exhalation rates in soil samples collected from Shivalik foot hills in the states of Haryana and Himachal Pradesh (India) were experimentally measured. A high-resolution gamma-ray spectroscopic system was used for the measurement of natural radioactivity ((226)Ra, (232)Th and (40)K) at Inter-University Accelerator Center, New Delhi, using a coaxial n-type high-purity germanium detector (EG&G, ORTEC, Oak Ridge, USA). The mass exhalation rates (EM) of radon in soil samples from the study area measured by 'sealed canister technique' using LR-115 type II track detectors varied from 50±1 to 143±6 mBqkg(-1) h(-1). The activity concentrations of (226)Ra, (232)Th and (40)K in various soil samples of the study area varied from 31±1.3 to 63±4.6, 53±1.8 to 78±2.6 and 472±4.8 to 630±7.0 Bq kg(-1) respectively. The results indicated some higher levels of radioactivity in Lal Dhang peak area of the hills compared with other locations under study.
authors.affiliation: Department of Physics, National Institute of Technology, Kurukshetra 136119, India.
authors.forename: R P
authors.initials: RP
authors.lastname: Chauhan
authors.forename: Pooja
authors.initials: P
authors.lastname: Chauhan
authors.forename: Anil
authors.initials: A
authors.lastname: Pundir
authors.forename: Sunil
authors.initials: S
authors.lastname: Kamboj
authors.forename: Vakul
authors.initials: V
authors.lastname: Bansal
authors.forename: R S
authors.initials: RS
authors.lastname: Saini
mesh_terms: D007194:India; D011197:Potassium Radioisotopes / Q000032:analysis*; D011829:Radiation Dosage; D011834:Radiation Monitoring; D011883:Radium / Q000032:analysis*; D012990:Soil Pollutants, Radioactive / Q000032:analysis*; D013051:Spectrometry, Gamma; D013910:Thorium / Q000032:analysis*
chemical_list: D011197:Potassium Radioisotopes; D012990:Soil Pollutants, Radioactive; D013910:Thorium; D011883:Radium