Determination of marine gamma activity and study of the minimum detectable activity (MDA) in 4pi geometry based on Monte Carlo simulation

Bagatelas, C.; Tsabaris, C.; Kokkoris, M.; Papadopoulos, C.; Vlastou, R.

doi:10.1007/s10661-009-0935-4

Cited by 65 publications

(23 citation statements)

References 28 publications

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“…This SGD potential area has a length of approximately 800m. Future field works will be focused on this area and in-situ gamma-ray spectroscopy methods [4], [5] will be exploited to monitor the activity concentration of radon's daughters. In this manner, results as time-series may be obtained [6] supporting the efforts of quantification of the emanating groundwater.…”

Section: Resultsmentioning

confidence: 99%

Localization of a submarine groundwater source at the eastern coast of Black Sea, Georgia, using radio-tracing techniques

Patiris¹,

Schubert

Eleftheriou³

et al. 2019

hnps

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In this work the results of a preliminary study are presented concerning the localization of a submarine groundwater discharge diffusive source at the coastal area of Georgia, Eastern Black Sea. The results were obtained during the first cruise campaign along the Georgian coastline during the October 2012 in the frame of an on-going FP7 BS-ERA.NET project. Measurements of radon gas 222Rn were accomplished in seawater samples by means of an on-site radon measurement method. The samples were collected along two trajec- tories, parallel to the coast, of a total length of 35km. In the same samples conductivity measurements were supplementary accomplished. Where radon exhibited local maxima and conductivity local minima, seabed surface sediment samples were collected for subsequent radioactivity measurements by High Purity Germanium detector. As groundwater tracer the excess of 210Pb in the sediment samples was used. Combining the results from the seawater and sediment, a part of the initial trajectory - with length of 800m - was revealed as a potential area of submarine groundwater discharge diffusive source

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Section: Resultsmentioning

confidence: 99%

Localization of a submarine groundwater source at the eastern coast of Black Sea, Georgia, using radio-tracing techniques

Patiris¹,

Schubert

Eleftheriou³

et al. 2019

hnps

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“…Numerical Monte-Carlo simulation is a generally recognized solution for verification, calibration, design optimization, and definition of spectrometers' metrological parameters and basic provisions of measurement procedures, when reference materials are not available or cannot be created [13][14][15][16][17].…”

Section: Methodsmentioning

confidence: 99%

Gamma-Spectrometer for Water Areas and Bottom Sediments Radiation Monitoring

Zhukouski¹,

Anshakou²,

Biryla³

et al. 2016

Prib. metody izmer.

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Gamma-spectrometer for water areas and bottom sediments radiation monitoring. Pribory i metody izmerenij [Devices and Methods of Measurements]. 2016 , vol. 7, no. 3, рр. 256-261. DOI: 10.21122/2220 -9506-2016 Devices and Methods of Measurements 2016, vol. 7, no. 3, pp. 256-261 Zhukouski A. et al. Приборы и методы измерений 2016 , 11, 220030, Minsk, Belarus Received 06.10.2016 Accepted for publication 25.11.2016 Abstract In order to solve the problem of continuous or periodic monitoring of water areas affected by radioactive contamination in the result of scheduled emissions in nuclear power plants or in the result of emergency situations in nuclear fuel cycle plants we need to develop measurement instruments with advanced mathematics and program support to assess the level of radioactive contamination with required accuracy. The aim of theoretical research was to optimize detection device construction, estimate spectrometer metrological parameters in given measurement geometries, and determine effective position of detection device in the process of in situ measurements.This device consists of spectrometric scintillation probe packed into sealed container (detection device) based on NaI(T1) crystal of Ø 63 × 63 mm or Ø 63 × 160 mm size, cable reel with deep-sea cable and a tablet PC for data processing and displaying. The container withstands static hydraulic pressure up to 5 MPa and can be used for measurements at depths of 500 m maximum. Probe measures energy distribution of gammaradiation with energy from 70 keV to 3000 keV. The implemented three-dimensional system for detection device position and orientation determination allows automatic operation of the device (without operator) for water areas or bottom sediment scanning. The spectrometer can output measurement results with threedimensional geographical coordinates as index maps of distribution with necessary resolution and accuracy. Monte Carlo models of spectrometer and controlled objects are developed in order to determine the detector response functions to given radionuclides in given measurement geometries without use of expensive standard measures of activity.Multifunction gamma-spectrometer for in situ radiation monitoring of water areas and bottom sediments was developed and constructed. In the result of theoretical researches the response functions have been calculated in the form of theoretical spectra of monitored radionuclides in definite measuring geometries. The results of mathematical modeling of the gamma-emitting transfer process allowed to estimate effective position of detection device for in situ measurements of specific activity radionuclides 2016 , vol. 7, no. 3, pp. 256-261 Zhukouski A. et al. Приборы и методы измерений 2016 ул. Бобруйская, 11, 220030, г. Минск, Беларусь Поступила 06.10.2016 Принята к печати 25.11.2016 Задачи постоянного или периодического мониторинга водоемов, подвергшихся радиоактивному загрязнению в результате штатных выбросов АЭС или в результате возникновения нештатных ситуаций на пр...

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“…The analysis of the spectra was performed with SPECTRW software. Radon progenies ( 214 Pb and 214 Bi) and potassium 40 K activity concentrations were quantitatively measured in Bq/m 3 using the appropriate marine efficiency parameters [13]. Also, a number of groundwater samples were collected by the divers.…”

Section: Study Area and Experimental Set Upmentioning

confidence: 99%

Radio-tracing techniques applied in a marine ecosystem, the case of a submarine groundwater source at southern Peloponnesus

Patiris¹,

Eleftheriou²,

Karageorgis³

et al. 2019

hnps

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The submarine discharge of groundwater (SGD) into the coastal zone has been recognized as an important component of the hydrological cycle. Quantities of groundwater flowing toward coastal aquifers are leaded under the seafloor and due to geomorphologic causes may discharge into the coastal zone. At some locations the quantity of the water is large enough to establish these springs as valuable water sources. The estimation of the submarine groundwater flux is complicated by conventional methods. Instead, measurements of a variety of radioisotopes (222Rn, 214Pb, 226Ra, 228Ra, 40K, 3H) as tracers provide a means to obtain integrated flux estimations as well as residence time, the age of the water and a factor of ground-sea water mixing process. Results from the current study at Stoupa’s (S. Peloponnesus) SGD source are presented revealing the importance of radio-tracing methods to the investigation of marine ecosystems.

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Determination of marine gamma activity and study of the minimum detectable activity (MDA) in 4pi geometry based on Monte Carlo simulation

Cited by 65 publications

References 28 publications

Localization of a submarine groundwater source at the eastern coast of Black Sea, Georgia, using radio-tracing techniques

Localization of a submarine groundwater source at the eastern coast of Black Sea, Georgia, using radio-tracing techniques

Gamma-Spectrometer for Water Areas and Bottom Sediments Radiation Monitoring

Radio-tracing techniques applied in a marine ecosystem, the case of a submarine groundwater source at southern Peloponnesus

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