Measurements of radon flux and soil-gas radon concentration along the main central thrust, Garhwal Himalaya, using SRM and RAD7 detectors

• Autorzy: Bourai A. , Aswal S. , Rawat M. , Prasad M. , Naithani N. , Joshi V. , Ramola R.C.
• Języki publikacji: EN

Abstrakty

EN

Radon in the Earth’s crust or soil matrix is free to move only if its atoms find their way into pores or capillaries of the matrix. 222Rn atoms from solid mineral grains get into air, filling pores through emanation process. Then 222Rn enters into the atmosphere from air-filled pores by exhalation process. The estimation of radon flux from soil surface is an important parameter for determining the source term for radon concentration modeling. In the present investigation, radon fluxes and soil-gas radon concentration have been measured along and around the Main Central Thrust (MCT) in Uttarkashi district of Garhwal Himalaya, India, by using Scintillation Radon Monitor (SRM) and RAD7 devices, respectively. The soil radon gas concentration measured by RAD7 with soil probe at the constant depth was found to vary from 12 ± 3 to 2330 ± 48 Bq m–3 with geometrical mean value of 302 ± 84 Bq m–3. The significance of this work is its usefulness from radiation protection point of view.

Słowa kluczowe

EN

RAD7; SRM; MCT; radon flux

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2013
• Tom: Vol. 61, no. 4
• Strony: 950--957
• Opis fizyczny: Bibliogr. 9 poz.

Twórcy

autor

Bourai A.

• Department of Physics, H.N.B. Garhwal University, Badshahi Thaul Campus, Tehri Garhwal, India

autor

Aswal S.

• Department of Physics, H.N.B. Garhwal University, Badshahi Thaul Campus, Tehri Garhwal, India

autor

Rawat M.

• Department of Physics, H.N.B. Garhwal University, Badshahi Thaul Campus, Tehri Garhwal, India

autor

Prasad M.

• Department of Physics, H.N.B. Garhwal University, Badshahi Thaul Campus, Tehri Garhwal, India

autor

Naithani N.

• Department of Physics, H.N.B. Garhwal University, Badshahi Thaul Campus, Tehri Garhwal, India

autor

Joshi V.

• Department of Physics, H.N.B. Garhwal University, Badshahi Thaul Campus, Tehri Garhwal, India

autor

Ramola R.C.

• Department of Physics, H.N.B. Garhwal University, Badshahi Thaul Campus, Tehri Garhwal, India

Bibliografia

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• Gupta, S.K. (1977), Geology and petrology of part of Upper Bhagirathi Valley Central crystalline, Dist. Uttarkashi, M.Tech. Thesis, University of Roorkee, Roorkee, India (unpublished).
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• Ramola, R.C., Y. Prasad, G. Prasad, S. Kumar, and V.M. Choubey (2008), Soil-gas radon as seismotectonic indicator in Garhwal Himalaya, Appl. Radiat. Isotopes 66, 10, 1523-1530, DOI: 10.1016/j.apradiso.2008.04.006.
• Ramola, R.C. (2010), Relation between spring water radon anomalies and seismic activity in Garhwal Himalaya, Acta Geophys. 58, 5, 814-827, DOI: 10.2478/s11600-009-0047-0.