Measurement of ²²²Rn and ²²⁰Rn exhalation rate from soil samples of Kumaun Hills, India

• Autorzy: Semwal P. , Singh K. , Agarwal T. K. , Joshi M. , Pant P. , Kandari T. , Ramola R. C.

Identyfikatory

DOI

10.1007/s11600-018-0124-3

• Języki publikacji: EN

Abstrakty

EN

The source terms, i.e., exhalation and emanation from soil and building materials are the primary contributors to the radon ( ²²²Rn)/thoron ( ²²⁰Rn) concentration levels in the dwellings, while the ecological constraints like ventilation rate, temperature, pressure, humidity, etc., are the influencing factors. The present study is focused on Almora District of Kumaun, located in Himalayan belt of Uttarakhand, India. For the measurement of ²²²Rn and ²²⁰Rn exhalation rates, 24 soil samples were collected from different locations. Gamma radiation level was measured at each of these locations. Chamber technique associated with Smart Rn Duo portable monitor was employed for the estimation of ²²²Rn and ²²⁰Rn exhalation rates. Radionuclides ( ²²⁶Ra, ²³²Th and ⁴⁰K) concentrations were also measured in soil samples using NaI(Tl) scintillation based gamma ray spectrometry. The mass exhalation rate for ²²²Rn was varying between 16 and 54 mBq/kg/h, while the ²²⁰Rn surface exhalation rate was in the range of 0.65–6.43 Bq/m2/s. Measured gamma dose rate for the same region varied from 0.10 to 0.31 µSv/h. Inter-correlation of exhalation rates and intra-correlation with background gamma levels were studied.

Słowa kluczowe

EN

radiation; exhalation; rate; emanation rate; gamma dose rate

PL

promieniowanie; ekshalacja; wskaźnik; współczynnik emanacji; dawka promieniowania gamma

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2018
• Tom: Vol. 66, no. 5
• Strony: 1203--1211
• Opis fizyczny: Bibliogr. 33 poz.

Twórcy

autor

Semwal P.

• Department of Physics Govt P.G College New Tehri India

autor

Singh K.

• Department of PhysicsGovt P.G CollegeNew TehriIndiaDepartment of Physics Govt P.G College New Tehri India

autor

Agarwal T. K.

• Radiological Physics and Advisory Division Bhabha Atomic Research Center Mumbai India

autor

Joshi M.

• Radiological Physics and Advisory Division Bhabha Atomic Research Center Mumbai India

autor

Pant P.

• Department of Physics HNB, Garhwal University Tehri Garhwal India

autor

Kandari T.

• Department of Physics HNB, Garhwal University Tehri Garhwal India

autor

Ramola R. C.

• Department of Physics HNB, Garhwal University Tehri Garhwal India

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