Dariusz Malczewski

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In situ gamma-ray measurements were taken at six locations in the Modane Underground Laboratory. Count rates for gamma radiation within the energy range of 7–2734 keV varied from 15 to 108 cs. The arithmetic mean was 79 cs for measurements taken without a collimator. The metamorphic rocks surrounding the Lab are characterized by low activity concentrations(More)
The natural radioactivity of 40K, 208Ti, 212Pb, 214Pb, 228Ac, and the fallout of 137Cs in typical rocks and soils of Swieradów Zdrój area (Sudetes Mountains, Poland) were measured in situ using a portable gamma-ray spectrometry workstation. The measurement points were chosen for different regional lithology: within hornfelses of the Szklarska Poreba(More)
To determine background radiation levels that might influence experiments, we measured in situ gammaray emissions at ten locations in the Boulby Underground Laboratory. For gamma radiation in the energy range of 7–2,734 keV, the counts varied from 6.5 to 28 c s. For measurements inside the Lab, the arithmetic mean was 24 c s. The sedimentary rocks that(More)
In situ gamma-ray measurements were taken at eight locations in the Gran Sasso National Laboratory (Italy). Count rates for gamma radiation within the energy range of 7–2,734 keV varied from 8 to 60 c s. The arithmetic mean was 49 c s for measurements taken without a collimator. The average gamma flux inside the Lab was 0.25 c cm s. The sedimentary rocks(More)
Soil gas 222Rn and 220Rn concentrations were measured at 18 locations in the Karkonosze-Izera Block area in southwestern Poland. Measurements were carried out in surface air and at sampling depths of 10, 40 and 80 cm. Surface air 222Rn concentrations ranged from 4 to 2160 Bq m(-3) and 220Rn ranged from 4 to 228 Bq m(-3). The concentrations for 10 and 40 cm(More)
The activity concentrations of K, Th, and U in the characteristic rocks of the Modane-Aussois region (Western Alps, France) were determined using an HPGe gamma-ray spectrometry system. The activity concentrations of K varied from 18 Bqkg (limestone dolomite) to 392 Bqkg (calcschist), while those of Th varied from 0.7 Bqkg (limestone dolomite) to 18 Bqkg(More)
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