Gamma-ray measurements of naturally occurring radioactive samples from Cyprus characteristic geological rocks

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dc.creatorTzortzis, M.
dc.creatorTsertos, H.
dc.creatorChristofides, S.
dc.creatorChristodoulides, G.
dc.date2002-12-26
dc.date.accessioned2026-07-07T05:48:37Z
dc.date.available2026-07-07T05:48:37Z
dc.descriptionUsing high-resolution gamma-ray spectroscopy, the terrestrial gamma radiation in all the predominant types of geological rock formations appearing in Cyprus was measured. Soil samples were collected from each rock type, sealed in 1-litre plastic Marinelli beakers, and measured in the laboratory for 24 hours each. From the measured gamma-ray spectra, activity concentrations were determined for Th-232 (range from 1.3 to 52.8 Bq/kg), U-238 (from 0.9 to 90.3 Bq/kg) and K-40 (from 13 to 894 Bq/kg). Elemental concentrations mean values of (2.8 +- 0.7) ppm, (1.3 +- 0.3) ppm and (0.6 +- 0.1) % were extracted, for thorium, uranium and potassium, respectively. Absorbed dose rates in air outdoors were calculated to be in the range of 0.1-50 nGy/h, depending on the geological features, with an overall mean value of (14.7 +- 7.3) nGy/h. The corresponding effective dose rates per person outdoors were estimated to be between 0.1 and 61.4 microSv/y, assuming a 20% occupancy factor.
dc.description27 pages including 3 tables and 4 figures; To appear in Radiation Measurements
dc.identifierhttps://arxiv.org/abs/physics/0212099
dc.identifierhttp://arxiv.org/abs/physics/0212099
dc.identifierRadiat.Meas. 37 (2003) 221-229
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/85091
dc.subjectMedical Physics
dc.subjectNuclear Experiment
dc.subjectPhysics and Society
dc.titleGamma-ray measurements of naturally occurring radioactive samples from Cyprus characteristic geological rocks
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