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

  title={Gamma-ray measurements of naturally occurring radioactive samples from cyprus characteristic geological rocks},
  author={M. Tzortzis and H. Tsertos and S. Christofides and G. Christodoulides},
  journal={Radiation Measurements},
Abstract Using 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 l plastic Marinelli beakers, and measured in the laboratory for 24 h each. From the measured gamma-ray spectra, activity concentrations were determined for 232 Th (range from 1.3 to 52.8 Bq kg −1 ), 238 U (from 0.9 to 90.3 Bq kg −1 ) and 40 K (from 13 to 894… Expand
A comprehensive study of natural gamma radioactivity levels and associated dose rates from surface soils in cyprus.
A survey was carried out to determine activity concentration levels and associated dose rates from the naturally occurring radionuclides 232Th, 238U and 40K, in the various geological formations ofExpand
Gamma radiation measurements and dose rates in commercially-used natural tiling rocks (granites).
The gamma radiation in samples of a variety of natural tiling rocks (granites) imported in Cyprus for use in the building industry was measured, employing high-resolution gamma-ray spectroscopy, finding that 25 samples meet the exemption dose limit, two meet the upper dose limit and only one clearly exceeds this limit. Expand
Radioactivity Measurements and Radiation Dose assessments in Soil of Albaha Region (Saudi Arabia)
The activity concentration and the gamma absorbed dose rates of the terrestrial naturally occurring radionuclides ) 226 Ra, 232 Th, and 40 K) were determined in soil samples collected from twentyExpand
Measuring γ-ray dose of terrestrial samples using β-γ Spectrometry
Experimental results related to specific activity, indoor and outdoor annual effective doses of 226 Ra, 232Th and 40K revealed that radionuclide concentration in soil and some building material samples of some regions of northwest of Iran are of some radiological importance. Expand
Measurement of Natural Radioactivity in Soil Samples from Some Areas of Sharjah by Gamma-Ray Spectrometry
Activity survey of Naturally Occurring Radioactive Materials (NORMs) in surface soil, took place at selected areas in the city of Sharjah, United Arab Emirates (UAE). Twenty-five composite soilExpand
Determination of thorium, uranium and potassium elemental concentrations in surface soils in Cyprus.
A comprehensive study to determine thorium, uranium and potassium elemental concentrations in surface soils throughout the accessible area of Cyprus using high-resolution gamma-ray spectrometry found the best-fitting relation was essentially of linear type with a correlation coefficient of 0.93. Expand
NORM, radon emanation kinetics and analysis of rocks-associated radiological hazards
Analysis of naturally occurring radioactive material (NORM) and environmental (radiological) hazard associated with radionuclides in rocks from northeastern Nigeria was carried out and the resultsExpand
Assessment of Natural Radioactivity Levels and Radiation Dose Rate in Some Soil Samples from Historical Area, AL-RAKKAH, Saudi Arabia
This study aims to determine the activity concentrations of naturally occurring, technically-enhanced levels of radiation and the gamma absorbed dose rates in soil samples collected across the landExpand
Assessment of Natural Radioactivity and Radiological Risks in River Sediments from Calabria (Southern Italy)
This study was developed to carry out a comprehensive radiological assessment of natural radioactivity for river sediment samples from Calabria, southern Italy, and to define a baseline backgroundExpand
Radiation hazards and natural radioactivity levels in surface soil samples from dwelling areas of North Cyprus
Due to increasing concern about environmental radiological protection, radioactivity concentrations of 226 Ra, 232 Th, 40 K and 137 Cs in surface soil samples collected from the North area of CyprusExpand


Naturally occurring radioactivity at the Alps–Apennines transition
Field γ-ray spectrometry was used for the quantitative assessment of radioactive elements and the expected radon flux of rocks cropping out at the Alps–Apennines transition zone (NW Italy). TheExpand
Population doses from terrestrial gamma exposure in areas near to old phosphate mine, Russaifa, Jordan
Abstract The exposure rates due to terrestrial gamma radiation were measured in a densely populated area intact and near to an old phosphate mine site. At present, however, the Municipality ofExpand
Terrestrial Gamma Radiation in Kochi Prefecture, Japan
Absorbed dose rates in air (dose rate) from terrestrial gamma radiations obtained using a scintillation survey meter ranged from 13.8 to 187 nGy/h depending on the geological features in Kochi Prefecture, suggesting that the authors continue to be under the influence of nuclear tests in the atmosphere. Expand
Determination of concentrations of selected radionuclides in surface soil in the U.S.
This paper summarizes the results of the background measurements made as part of the ORNL program of radiological surveillance at inactive uranium mills and sites formerly utilized during Manhattan Engineer District and early Atomic Energy Commission projects, and provides a brief analysis of regional differences and similarities in data values. Expand
Indoor radon (222Rn) concentration measurements in Cyprus using high-sensitivity portable detectors.
The airborne (222)Rn concentration in the interior of various Cypriot buildings and dwellings was measured using high-sensitivity radon portable detectors (passive electronic devices of the type RADIM3), and the total annual effective dose equivalent to the Cyprus population was calculated. Expand
Radioactivity in Geology and Cosmology
The study of natural radioactivity has experienced a substantial revival in recent years. One reason is the general increase in importance and popularity of all aspects of nuclear science, with thisExpand
Airborne 222Rn concentration in Cypriot houses.
Studies from a pilot survey in 89 houses in Cyprus show that the arithmetic mean for the housing stock is about 7 Bq m-3 and the annual effective dose equivalent to the population from radon progenyExpand
The radiation field in air due to distributed gamma-ray sources in the ground. HASL-195.
Abstract : A much more complete and detailed picture of the external environmental gamma-ray radiation field has been obtained through gamma-ray transport calculations of exposure rates, differentialExpand
Gamma Ray Fields in the Air Due to Sources in the Ground
Air kerma per unit source density at 12 heights up to 300 m above the ground was calculated using a Monte Carlo method for monoenergetic plane sources in and on the ground and for naturalExpand
Monte Carlo calculation of dose rate conversion factors for external exposure to photon emitters in soil.
The comparison between these results and the results deduced previously by other authors indicates a good agreement for photon energies above 1,500 keV, but the agreement is not as good for the low energy photons. Expand