Radon Concentration In The Atmosphere Of PTNBR-BATAN Bandung

ABSTRACT:

Indoors and outdoors radon concentration in PTNBR’s atmosphere had been measured using γ -ray spectrometry method. The radon concentrations are determined by measuring concentration of γ -rays emitters of radon progeny i.e. 214 Pb and 214 Bi.

The radon progeny in the atmosphere was trapped by fiberglass filter paper GF-8 type set in an air sampler. Radioactivity of filter samples were then measured using γ -ray spectrometry. By this method, it was found that indoor and outdoor radon concentrations in the atmosphere of PTNBR-BATAN, Bandung were 0,3 - 47 Bq/m 3 and 0,1 – 0,3 Bq/m 3 . The outdoor radon concentrations are lower than the worldwide average (10 Bq/m 3 ), meanwhile the indoor radon concentrations in some building are higher than worldwide average (40 Bq/m 3 ).

Key words : radon, radon’s progeny, γ -ray spectrometry

Rasito 1) , Soleh Sofyan 1) dan Tri Desita 2)
1) Pusat Teknologi Nuklir Bahan dan Radiometri BATAN, 

Jl. Tamansari No.71, Bandung 40132 

2) Jurusan Fisika, FMIPA, Universitas Padjajaran, 

Jl. Bandung-Sumedang KM 21, Jatinangor