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Browsing by Author "Haber, Ryszard"

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    Kalibracyjne komory radonowe w Instytucie Fizyki Jądrowej im. Henryka Niewodniczańskiego
    (Institute of Nuclear Physics Polish Academy of Sciences, 2003) Kozak, Krzysztof; Janik, Mirosław; Mazur, Jadwiga; Kochowska, Elżbieta; Bogacz, Joanna; Łoskiewicz, Jerzy; Swakoń, Jan; Zdziarski, Tadeusz; Haber, Ryszard
    The laboratory for calibration of radon detectors is presented in this report. The laboratory is equipped with two calibration chambers (volume: 200 and 600 liters), two radon sources (Ra-226 activity: 21,6 kBq and 52,3 kBq ), a pump, a flow meter, a manometer, etc. Range of obtained radon concentrations is from 35 kBq/m3 to 244 kBq/m3. The computer software has been elaborated for planning and controlling the calibration procedure.
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    Pomiary radonu w budynkach na terenie Kotliny Jeleniogórskiej w ramach projektu UE pt. „RADON – jak z nim żyć?”
    (Institute of Nuclear Physics Polish Academy of Sciences, 2008) Kozak, Krzysztof; Mazur, Jadwiga; Kochowska, Elżbieta; Grządziel, Dominik; Hovhannisyan, H.; Haber, Ryszard; Zdziarski, Tadeusz
    The radon measurements in dwellings were performed on the area of Jeleniogórska valley (Sudety mountains region) within the frame of the project “Radon, how to live with it?”. The project was supported by EU founds and its goal was to widen the local community knowledge on natural radiation (with special emphasis on radon). The measurements were performed by the Laboratory of Radiometric Expertise, Institute of Nuclear Physics, Polish Academy of Sciences and were organized by The Polish Ecology Club. The Sudety region is the area where uranium deposits occur. It is directly connected with its geological structure. Therefore it is the region where higher radon concentration can appear. The radon concentration were checked in about 50 houses (in 20 villages) using CR-39 track detectors (manufactured by RadoSys, Hungary). The highest radon concentrations were obtained in cellars, lower values were found on the ground floors and the lowest ones on the first floors with the average values: 1310 Bq/m3, 220 Bq/ m3, 130 Bq/m3, respectively. The measured values exceed the average value of radon concentration for polish dwellings – 49 Bq/m3 [data given by Central Laboratory for Radiological Protection, Warsaw). Additionally, two seminars were organized for the local community. The first one dealt with the natural radiation in Sudety in general, and the second one reviewed the results obtained during the project duration.
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    Preliminary Results of Radon and Thoron Measurements in South-Eastern Part of Serbia and Montenegro
    (Institute of Nuclear Physics Polish Academy of Sciences, 2004) Kozak, Krzysztof; Mazur, Jadwiga; Janik, Mirosław; Haber, Ryszard
    The results of measurements of radon and thoron concentrations in soil gas and in waters as well as radon exhalation rate, gamma dose rate and sampling soil for gamma spectroscopy measurements are reported. Extremely high radon (222Rn) concentrations were observed in soil gas (> 2000 kBq/m3) in Niška Banja town. Very high values of radon exhalation rates (1,5 Bq/m2s) as well as radon concentration in water samples (> 500 Bq/l) were also found. The next control measurements and monitoring of radon risk are planned for full recognition and understanding of that unusual phenomenon. A survey on chosen areas in Serbia and Montenegro was done in June 2004. The first area (Niška Banja Spa) is located in the South-Eastern Serbia. The other one is Obrenovac, near Belgrade. This field work was organized and headed by dr Zora S. Zunic from ECE Laboratory (VINCA Institute of Nuclear Sciences, Belgrade).