Self-absorption correction in determining the 238U activity of soil samples via 63.3keV gamma ray using MCNP5 code

Huy, Ngo Quang; Binh, Do Quang; Ân, Võ Xuân; Loan, Trương Thị Hồng; Can, Nguyen Thanh

doi:10.1016/j.apradiso.2012.09.004

Cited by 16 publications

(4 citation statements)

References 23 publications

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“…This method is an experimental one. It consists in measuring the counting area of the 59.54 keV photoelectric peak in the configuration of the experimental device (section 2.2), varying the thickness of demineralised water [15] in the SG 50 bottle from 0 cm to 4 cm with a 0.5 cm increment. The net counts evolution as a function of water thickness can be expressed as a decreasing exponential curve, similar to the gamma photon attenuation law in matter.…”

Section: Graphic Methodsmentioning

confidence: 99%

Determination of mass attenuation coefficient by numerical absorption calibration with Monte-Carlo simulations at 59.54 keV

Degrelle

Mavon

Groetz

2016

Nuclear Instruments and Methods in Physics Research Section A:

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International audienceThis study presents a numerical method in order to determine the mass attenuation coefficient of a sample with an unknown chemical composition at low energy. It is compared with two experimental methods : a graphic method and a transmission method. The method proposes to realise a numerical absorption calibration curve to process experimental results. Demineralised water with known mass attenuation coefficient (0.2066 cm 2 .g −1 at 59.54 keV) is chosen to confirm the method. 0.1964 ± 0.0350 cm 2 .g −1 is the average value determined by the numerical method, that is to say less than 5% relative deviation compared to more than 47% for the experimental methods

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Section: Graphic Methodsmentioning

confidence: 99%

Determination of mass attenuation coefficient by numerical absorption calibration with Monte-Carlo simulations at 59.54 keV

Degrelle

Mavon

Groetz

2016

Nuclear Instruments and Methods in Physics Research Section A:

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“…Huy and Luyen, 2005;Aguiar et al, 2006;Khater and 295 Ebaid, 2008;Kaminski et al, 2014;Barrera et al, 2017), each employing a slightly different method depending on available tools in the respective laboratory. Often, experimental work (e.g., Huy and Luyen, 2005;Aguiar et al, 2006;Khater and Ebaid, 2008) is combined with Monte Carlo-based model work (e.g., Huy et al, 2013;Bruggeman et al, 2016).…”

Section: Correcting Self-absorptionmentioning

confidence: 99%

Technical note: Quantifying Uranium-series disequilibrium in natural samples for dosimetric dating – Part 1: gamma spectrometry

Mauz

Nolan

Appleby

2021

Preprint

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Abstract. Dosimetric dating techniques rely on accurate and precise determination of environmental radioactivity. Gamma spectrometry is the method of choice for determining the activity of 238U, 232Th and 40K. With the aim to standardise gamma-spectrometric procedures for the purpose of determining accurate parent nuclide activities in natural samples, we outline here basics of gamma spectrometry and practical laboratory procedures. This includes gamma radiation and instrumentation, sample preparation, finding the suitable measurement geometry and sample size for a given detector and using the most suitable energy peaks in a gamma spectrum. The issue of correct efficiency calibration is highlighted. The procedures outlined are required for estimating contemporary parent nuclide activity. For estimating changing activities during burial specific data analyses are required and these are also highlighted.

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“…In order to calculate the self-absorption correction factor C 3 (c) contributed by the elemental composition, we simulated various soil samples with different elemental compositions quoted from reference (Honda et al, 2014;Hong et al, 2010;Huy et al, 2013). The vast majority of the soil samples routinely measured at the laboratory have various elemental compositions, apparent densities and sampling quantities (Dziri et al, 2014).…”

Section: Elemental Composition Effectmentioning

confidence: 99%

Efficiency corrections in determining the 137Cs inventory of environmental soil samples by using relative measurement method and GEANT4 simulations

Bai

2015

Journal of Environmental Radioactivity

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Self-absorption correction in determining the 238U activity of soil samples via 63.3keV gamma ray using MCNP5 code

Cited by 16 publications

References 23 publications

Determination of mass attenuation coefficient by numerical absorption calibration with Monte-Carlo simulations at 59.54 keV

Determination of mass attenuation coefficient by numerical absorption calibration with Monte-Carlo simulations at 59.54 keV

Technical note: Quantifying Uranium-series disequilibrium in natural samples for dosimetric dating – Part 1: gamma spectrometry

Efficiency corrections in determining the 137Cs inventory of environmental soil samples by using relative measurement method and GEANT4 simulations

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