Authors:
J. MalathiSolid State and Radiation Physics Laboratory, Department of Physics, Bharathiar University, Coimbatore, 641 046 India

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S. KrishnaveniSolid State and Radiation Physics Laboratory, Department of Physics, Bharathiar University, Coimbatore, 641 046 India

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G. BrahmanandhanSolid State and Radiation Physics Laboratory, Department of Physics, Bharathiar University, Coimbatore, 641 046 India

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D. KhannaSolid State and Radiation Physics Laboratory, Department of Physics, Bharathiar University, Coimbatore, 641 046 India

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S. SelvasekarapandianSolid State and Radiation Physics Laboratory, Department of Physics, Bharathiar University, Coimbatore, 641 046 India

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V. MeenakshisundaramRadiological Safety Division, Indira Gandhi Center for Atomic Research, Kalpakkam, 626 103 India

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V. GajendranRadiological Safety Division, Indira Gandhi Center for Atomic Research, Kalpakkam, 626 103 India

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R. MathiyarasuRadiological Safety Division, Indira Gandhi Center for Atomic Research, Kalpakkam, 626 103 India

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R. SanthanamRadiological Safety Division, Indira Gandhi Center for Atomic Research, Kalpakkam, 626 103 India

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Abstract  

The activity concentration and absorbed gamma dose rates due to primordial radionuclides (238U, 232Th and 40K) have been determined for the soil of Coimbatore city using NaI(Tl) gamma-ray spectrometer. The average activity concentrations of 232Th, 238U and 40K in the soil samples have been found to be 31.4 Bq·kg−1, 12.8 Bq·kg−1 and 698.0 Bq·kg−1, respectively, which give the total gamma dose rate contribution of 56.4 nGy·h−1. Grab sampling technique has been used to determine the indoor radon (222Rn) and thoron (220Rn) progeny levels in different dwellings in the city. The concentrations of radon and thoron progenies range from 0.4 to 10.4 and from 0.7 to 12.7 mWL with a mean value of 1.4 mWL and 3.1 mWL, respectively. The annual effective dose due to radon and thoron progeny has been found to be 0.14 mSv·y−1.

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Journal of Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
Foundation
1968
Volumes
per Year
1
Issues
per Year
12
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5731 (Print)
ISSN 1588-2780 (Online)