The calculation of the detection efficiency in the calibration of gross alpha–beta systems

Calin, Marian Romeo; Druker, Alexandru Erminiu; Rădulescu, Ileana

doi:10.1007/s10967-012-1848-1

Cited by 10 publications

(2 citation statements)

References 5 publications

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“…BETA manual countthe metallic tray being at 3 mm below the probe-detector. The calculated efficiencies of the detection were subsequently introduced in the system for two working geometries: measuring geometry-gross alpha-beta e a g = 31,37 ± 0.25 (%)-the alpha efficiency and e b g = 44.94 ± 0.69 (%)-the beta efficiency, where the spill-over factor is X talk g = 25.59 ± 0.50 (%) and measuring geometry up alpha-beta e a u = 36.23 ± 0.29 (%)-the alpha efficiency and e b u = 48.53 ± 0.74 (%)-the beta efficiency, where the spill-over factor is X talk u = 31.08 ± 0.60 (%), [27].…”

Section: Instrumentsmentioning

confidence: 99%

Evaluation of quality parameters and of natural radionuclides concentrations in natural mineral water in Romania

Calin

Ion

Rădulescu

2014

J Radioanal Nucl Chem

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This paper presents the results of radiometric measurements and the main physical-chemical parameters obtained on samples of natural mineral water commercially available. The water samples originate from the Bucovina region, which is located in the northern part of Romania. Gross alpha and beta activities were measured for screening purposes and for guidance to the competent authorities in determining whether the water can be used for human consumption. Activity concentrations of 40 K, 238 U, 232 Th and 226 Ra were also determined, as well as the associated effective dose. The mean effective doses for an adult member of the public in Romania derived from the intake of naturally occurring alpha or beta radionuclides ( 40 K, 238 U, 232 Th and 226 Ra) in natural water varies between: 0.66 and 2.17 (lSv/year) for 40 K; 1.12 and 1.71 (lSv/year) for 238 U; 1.79 and 3.95 (lSv/year) for 232 Th and 5.75 and 20.61 (lSv/year) for 226 Ra. This assessment on natural mineral water springs from the Bucovina region updates data on the activity concentrations and effective doses due to intake of natural radionuclides for Romania.

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Section: Instrumentsmentioning

confidence: 99%

Evaluation of quality parameters and of natural radionuclides concentrations in natural mineral water in Romania

Calin

Ion

Rădulescu

2014

J Radioanal Nucl Chem

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“…An elevated level of beta radiation may be caused by the release of some artificial beta radionuclides, such as 90 Sr and 137 Cs [1]. The monitoring of radioactive alpha and beta concentrations is performed by nuclear techniques for environmental samples (solids, liquids, and aerosol filters) [2]. The gross alpha activity in the soil refers to all alpha emitters and depends on the mineralogical composition and geological characteristics of the area.…”

Section: Introductionmentioning

confidence: 99%

Distribution of Natural Radionuclides and 137Cs in Urban Soil Samples from the City of Novi Sad, Serbia-Radiological Risk Assessment

Janković

Jelić

Rajačić

et al. 2023

Toxics

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This work presents the natural radioactivity distribution of 21 surface soil samples taken in the city of Novi Sad, Serbia. The analysis for radioactivity was performed using a gas low-level proportional counter for gross alpha and gross beta activity, while the specific activities of radionuclides were determined using HPGe detectors. The gross alpha activity of 20 samples was below the minimum detectable concentration (MDC), while in 1 sample it was 243 Bq kg−1; the gross beta activity ranged from the MDC (11 samples) to 566 Bq kg−1. The gamma spectrometry measurements showed naturally occurring radionuclides 226Ra, 232Th, 40K, and 238U in all investigated samples, with average values (Bq kg−1) of 33.9, 36.7, 513.8, and 34.7, respectively. Natural radionuclide 235U was detected in 18 samples with activity concentrations in the range of 1.3–4.1 Bq kg−1, while in the other 3 samples, the values were below the MDC. The artificial 137Cs radionuclide was detected in 90 percent of the samples, with a maximum value of 21 Bq kg−1, while the other artificial radionuclides were not detected. Based on the obtained concentrations of natural radionuclides, hazard indexes were estimated, and radiological health risk was assessed. The results present the absorbed gamma dose rate in the air, annual effective dose, radium equivalent activity, external hazard index, and lifetime cancer risk.

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Investigations on chemical composition and natural radioactivity levels from salt water and peloid used in pelotherapy from the Techirghiol Lake, Romania

Calin

Rădulescu

Ion

et al. 2019

Environ Geochem Health

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The calculation of the detection efficiency in the calibration of gross alpha–beta systems

Cited by 10 publications

References 5 publications

Evaluation of quality parameters and of natural radionuclides concentrations in natural mineral water in Romania

Evaluation of quality parameters and of natural radionuclides concentrations in natural mineral water in Romania

Distribution of Natural Radionuclides and 137Cs in Urban Soil Samples from the City of Novi Sad, Serbia-Radiological Risk Assessment

Investigations on chemical composition and natural radioactivity levels from salt water and peloid used in pelotherapy from the Techirghiol Lake, Romania

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