EFFTRAN—A Monte Carlo efficiency transfer code for gamma-ray spectrometry

Vidmar, T.

doi:10.1016/j.nima.2005.05.055

Cited by 197 publications

(83 citation statements)

References 9 publications

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“…Therefore in order to estimate the counting rate using a chosen γ-ray of radon progeny (609 keV, 1120 keV and 17645 keV for 214 Bi and 295 keV and 352 keV for 214 Pb) the next step is to estimate contribution of each layer of the sample to the counting rate (i,.e. to estimate calibration coefficient of each layer) by using semi-empirical method, an EFFTRAN package [17] for example, to calculate efficiency transfer from a standard to a sample as described in details in [14]. Finally, solving the system of equations from [14], one can extract not only the exhalation rate, but the radon diffusion (and consequently radon diffusion length) and the emanation coefficient as well.…”

Section: The "Gamma Methods"mentioning

confidence: 99%

Merits and Demerits of Different Methods for Radon Exhalation Measurements for Building Materials

Awhida¹,

Ujić²,

Kolarž³

et al. 2017

RAD Conference Proceedings

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Abstract. With an increase in the awareness of the need to save energy, residents tend to live in dwellings with increasingly tight windows and doors, thus reducing the ventilation rate of indoor air which leads to an increased accumulation of radon indoors. Having in mind that a dose from an exposure to inhaled radon and its progenies can be higher than a dose received from radium in building materials, it is suggested that radon exhalation measurements should receive due attention. In this contribution, the authors compare results gathered using a few methods for radon exhalation measurement and discuss its merits and demerits.

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Section: The "Gamma Methods"mentioning

confidence: 99%

Merits and Demerits of Different Methods for Radon Exhalation Measurements for Building Materials

Awhida¹,

Ujić²,

Kolarž³

et al. 2017

RAD Conference Proceedings

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“…Also, the information on both calibration source and measured sample has to be provided (diameter, filling height, matrix composition, thickness of the container, etc.). Because the model of the sample, as well as the detector crystal, can be constructed from cylinders only, the only complex operation required in the code is the calculation of the path length traversed through the cylinders defining the counting geometry by a gamma-ray originating at an arbitrary location [10].…”

Section: Semiempirical Efficiency Calibration: Efftran and Mefftranmentioning

confidence: 99%

“…EFFTRAN, an efficiency transfer software, is dedicated to calculation of efficiency transfer for cylindrical samples, while MEFFTRAN performs the same calculations for the Marinelli beaker [10,11]. e software is organized as a Microsoft excel file with three modules.…”

Section: Semiempirical Efficiency Calibration: Efftran and Mefftranmentioning

confidence: 99%

Semiempirical Efficiency Calibration in Semiconductor HPGe Gamma-Ray Spectroscopy

Nikolić

Rajačić

Todorović

et al. 2018

Journal of Spectroscopy

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One of the main problems in quantitative gamma-ray spectroscopy is the determination of detection efficiency, for different energies, source-detector geometries, and composition of samples or sources. ere are, in principle, three approaches to this issue: experimental, numerical, and semiempirical. Semiempirical approach is based on the calculation of the efficiency for the measured sample on the basis of an experimental efficiency measured on the same detector, but with a calibration source that can be of different size, geometry, density, or composition-the so-called efficiency transfer. e aim of this paper is to analyze the semiempirical approach, using EFFTRAN and MEFFTRAN software as a typical example. ese software were used in the Department of Radiation and Environmental Protection, Vinča Institute of Nuclear Sciences, on three HPGe detectors. e results were compared to the experimentally obtained efficiency, and further validation is performed by measuring reference materials issued within the framework of several interlaboratory intercomparisons. e analysis of the results showed that the efficiency transfer produces good results with the discrepancies within the limits of the measurement uncertainty. Also, for intercomparison measurement, u test criterion for the trueness of the result was applied showing that the majority of the obtained results were acceptable. Some difficulties were identified, and the ways to overcome them were discussed.

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“…The relative expanded uncertainty was calculated by the methodology described in NIST Technical Note 1297 [31] and taken into account for the total measurement uncertainty, as it was applied for the peak-efficiency calibration. For the spectra evaluation and activities calculation, the Genie 2000 software (Canberra, USA) was used; while the EFFTRAN code [32] was applied for sample density and coincidence corrections as it is appropriate for cylindrical detectors and samples. The reference material IAEA-434 Radionuclides in phosphogypsum and certified reference material IAEA-447 Natural and artificial radionuclides in moss-soil were used to validate the quality of measurement results as shown in Table 1.…”

Section: Determination Of 238 U and 226 Ra In Plants And Soilsmentioning

confidence: 99%

Transfer of uranium and radium to Chinese cabbage from soil containing elevated levels of natural radionuclides

Smodiš

Černe

Jačimović

et al. 2015

J Radioanal Nucl Chem

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The transfer of 238 U and 226 Ra to Chinese cabbage (Brassica rapa L. subsp. pekinensis (Lour.) Hanelt) was investigated from soils contaminated with uranium-mill tailings (UMT) by means of a pot experiment in laboratory-based conditions applying different levels of soil contamination under various growing conditions. Activity concentrations for 226 Ra in Chinese cabbage varied from 56-276, 156-502 and 277-877 Bq kg -1 dry mass for 20, 40 and 60 % of UMT content in the soil, respectively, and for 238 U from 1.0-2.3 and 2.3-4.7 Bq kg -1 dry mass for 40 and 60 % of UMT content in the soil, respectively. The results showed increased accumulation of 226 Ra and low accumulation of 238 U in cabbage leaves in more contaminated soil.

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EFFTRAN—A Monte Carlo efficiency transfer code for gamma-ray spectrometry

Cited by 197 publications

References 9 publications

Merits and Demerits of Different Methods for Radon Exhalation Measurements for Building Materials

Merits and Demerits of Different Methods for Radon Exhalation Measurements for Building Materials

Semiempirical Efficiency Calibration in Semiconductor HPGe Gamma-Ray Spectroscopy

Transfer of uranium and radium to Chinese cabbage from soil containing elevated levels of natural radionuclides

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