@conference{
author = "Čeliković, Igor T. and Đurašević, Mirjana M. and Ujić, Predrag and Repić, Predrag and Kandić, Aleksandar and Lončar, Boris B.",
year = "2017",
abstract = "U radu je merena ekshalacija radona iz bigra iz Niške Banje poznatom po povišenoj
koncentraciji 226Ra. Bigar zbog svoje velike poroznosti i visoke koncentracije radijuma
je idealan materijal za testiranje parametara od kojih zavisi brzina ekshalacije. U radu
je razmatrana zavisnost ekshalacije u odnosu na vlažnost kao i na sprašenost uzorka.
Brzina ekshalacije je merena metodom zatvorene komore, a sama koncentracija radona
aktivnim uređajem. Dobijeni rezultati ukazuju da brzina ekshalacije raste sa povećanjem vlažnosti uzorka i smanjenjem veličine zrna., In this contribution, radon exhalation rate from travertine originating from Niška
Banja, Serbia was measured. This particular travertine, with a high 226Ra concentration
and high porosity, is ideal for testing various parameters that can influence radon
exhalation rate. The radon exhalation rate was investigated for different sizes of grains.
Grain sizes were dived into 4 groups: 1) 2.1 - 1.6 mm, 2.) 1.6 - 1.2 mm, 3.) 1.2 - 0.7 mm
i 4.) < 0.7 mm. Influence of the humidity on radon exhalation rate was also
investigated. Samples with the smallest grain size were exposed to 3 different levels of
humidity (dry sample, and two samples in which water content was around 10% and
20% of the mass of dry sample. An accumulation chamber method with an active device
RTM1688-2 was used to estimate radon exhalation rate from continuous measurement
of radon in the chamber. Obtained results indicate that radon exhalation rate is
increasing with an increase of humidity of the sample and with an decrease of grain
size.",
publisher = "Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе",
journal = "29. симпозијум ДЗЗСЦГ : зборник радова",
title = "Ispitivanje brzine ekshalacije radona: uticaj sprašenosti i vlažnosti uzorka, Investigation of the radon exhalation rate: an influence of humidity and a grain size",
pages = "225-231",
url = "https://hdl.handle.net/21.15107/rcub_vinar_8278"
}