Showing papers by "Aleksandar Dragić published in 2020"
TL;DR: In this article, the indoor radon measurements were performed by two methods: passive and active, using track-etched detectors, Radtrak2 Radonova and SN1029, respectively, in a freestanding single-family house with loft and a 16-floor residential building.
Abstract: Abstract It is well known that one of the factors that influence the indoor radon variability is the floor level of the buildings. Considering the fact that the main source of indoor radon is radon in soil gas, it is expected that the radon concentration decreases at higher floors. Thus at higher floors the dominant source of radon is originating from building materials, and in some cases there may be deviations from the generally established regularity. In such sense, we chose one freestanding single-family house with loft and other 16-floor high-rise residential building for this study. The indoor radon measurements were performed by two methods: passive and active. We used passive devices based on track-etched detectors: Radtrak2 Radonova. For the short-term indoor radon measurements, we used two active devices: SN1029 and SN1030 (manufactured by Sun Nuclear Corporation). The first device was fixed in the living room at the ground level and the second was moved through the floors of the residential building. Every measuring cycle at the specified floor lasted seven days with the sampling time of 2 h. The results show two different indoor radon behaviours regarding radon variability due to floor level. In the single-family house with loft we registered intense difference between radon concentration in the ground level and loft, while in the high-rise residential building the radon level was almost the same at all floors, and hence we may conclude that radon originated mainly from building materials.
7 citations
TL;DR: In this paper, the intensity spectra of Nb 94 from the Nb 93 (n t h, 2γ) reaction were derived from experimental spectra recorded at the PGAA facility of Centre for Energy Research (MTA EK).
1 citations
TL;DR: In this paper, the density and partial radiative widths of nuclear levels are simultaneously derived from the measured intensity of gamma two-stage cascade transitions as a function of primary transition energy E 1.
Abstract: Data obtained with the γ-calorimeter of the DANCE spectrometer at the Los Alamos National Laboratory (LANL) are reanalyzed using the empirical model developed at the Joint Institute for Nuclear Research (JINR, Dubna), in which the density and partial radiative widths of nuclear levels are simultaneously derived from the measured intensity of gamma two-stage cascade transitions as a function of primary transition energy E1.