Dariusz Malczewski

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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-1. The arithmetic mean was 49 c s-1 for measurements taken without a collimator. The average gamma flux inside the Lab was 0.25 c cm-2 s-1. The sedimentary(More)
To determine background radiation levels that might influence experiments, we measured in situ gamma-ray 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-1. For measurements inside the Lab, the arithmetic mean was 24 c s-1. The sedimentary rocks that(More)
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-1. The arithmetic mean was 79 cs-1 for measurements taken without a col-limator. The metamorphic rocks surrounding the Lab are characterized by low activity(More)
The activity concentrations of 40 K, 232 Th, and 238 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 40 K varied from 18 Bqkg-1 (limestone dolomite) to 392 Bqkg-1 (calcschist), while those of 232 Th varied from 0.7 Bqkg-1 (limestone(More)
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