Volume No. 7 Issue No.: 2 Page No.: 682-687 Oct. - Dec. 2012

 

COMPONENT OF BACKGROUND GAMMA RADIATION LEVELS IN BANGALORE METROPOLITAN, INDIA

 

Sathish L. A.* and Nethravathi K.S.

Department of Physics, Government Science College, Bangalore (INDIA)

 

Received on : July 05, 2012

 

ABSTRACT

 

Living organisms are being exposed to ionizing radiation since its existence from sources like cosmic rays, terrestrial radio nuclides which occur in the earth’s crust, in building materials, in air, water, foods and in the human body itself. Cosmic rays are more intense at higher altitudes and the concentration levels of 238U and 232Th in soils are elevated in localized areas. Building construction materials of houses, the design and ventilation systems strongly influences the doses due to indoor levels of the radioactive gas radon and its decay products, which contributes significantly to through inhalation. Periodic review of the dose values reported here are very essential to understand the contribution to the background radiation sources. Brief account and comparison of the dose rates arising from natural and manmade sources to the Indian population are presented.

 

Keywords : radiation, Dose rate, Sources, Ventilation, Indian population

 

 

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