International Journal of Radiation Research
نشریه پرتو پژوه
Int J Radiat Res
Basic Sciences
http://ijrr.com
79
journal79
2322-3243
2345-4229
10.61186/ijrr
en
jalali
1395
1
1
gregorian
2016
4
1
14
2
online
1
fulltext
en
Variation of radon progeny concentration over a continental location
Radiation Biology
Radiation Biology
تحقيق بديع
Original Research
<p style="text-align: justify;"><strong>Background: </strong>The variation of the radon progeny concentration in outdoor environment and meteorological parameters at fine resolution were studied for one year at a continental location, National Atmospheric Research Laboratory, Gadanki, India. <strong>Materials and Methods: </strong>The concentrations were measured using Alpha Progeny Meter by collecting air samples at a height of 1 m above the Earth’s surface at a known flow rate. <strong>Results:</strong> Radon progeny concentration shows temporal variations on diurnal and monthly scales, and is due to mixing in the atmosphere. Peak in the early morning hours and low values during afternoon compared to nighttime are due to differential heat contrast between earth’s surface and its atmosphere. However, the activity during February shows maximum compared to June/July months. The diurnal variation of radon progeny shows positive correlation with the relative humidity and negative correlation with ambient temperature. The monthly mean activity of radon progeny for the year 2012 was found to be 4.76 ± 0.73 mWL. <strong>Conclusion:</strong> The mean concentration of radon progeny in the study region is relatively high compared to the other locations in India and may be due to the rocky terrains and trapping of air-masses near the observation site due to its topography. </p>
<p></p>
Radon progeny, NARL, alpha progeny meter, working level
105
111
http://ijrr.com/browse.php?a_code=A-10-1-605&slc_lang=en&sid=1
K.
Charan Kumar
790031947532846008045
790031947532846008045
No
Bangalore University
T.
Rajendra Prasad
790031947532846008046
790031947532846008046
No
National Atmospheric Research Laboratory
T.
Narayana Rao
790031947532846008047
790031947532846008047
No
National Atmospheric Research Laboratory
M.
Venkataratnam
790031947532846008048
790031947532846008048
No
National Atmospheric Research Laboratory
K.
Nagaraja
kamsalinagaraj@bub.ernet.in
790031947532846008049
790031947532846008049
Yes
Bangalore University