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

Degrelle, D.; Mavon, Christophe; Groetz, Jean-Emmanuel

doi:10.1016/j.nima.2016.01.075

Cited by 9 publications

(5 citation statements)

References 15 publications

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“…There is satisfactory agreement for some samples between experiment and theory at 59.5 keV, although the experimental results tend to be lower than the theoretical results, also it was found that the mass attenuation coefficients of Geant4 more close to the experimental ones. The correction factor between the simulated results and the experimental ones is obtained equal to 0.77 for the photopeak at 59.54 keV by (Degrelle, Mavon, & Groetz, 2016). At the energies 356.5 keV, 662 keV and 1173 keV, the results of Geant4 and XCOM programs were in a good agreement with experiment.…”

Section: Resultsmentioning

confidence: 54%

“…The impacts of various parameters on the mass attenuation coefficient of materials are discussed in many studies. Several experimental and theoretical studies have been conducted on the effects of different factors on the mass attenuation coefficients of soil (Taqi, Al Nuaimy, & Karem et al, 2016;Singh, Ali, Badiger, & El-Khayatt, 2016;Medhat, 2015;Medhat, Pires, & Arthur, 2014;Medhat & Wang, 2013;David, 2013;Medhat, 2012;Chaudhari & Raje, 2012;Oliveira et al, 2010;Raje & Chaudhari, 2010;Mau cec & Denijs, 2009;De Groot, van der Graaf, de Meijer, & Mau cec, 2009;Pires, Rosa, Pereira, Arthur, & Bacchi, 2009;Demir, Ün, € Ozgül, & Ş ahin, 2008;Okunade, Adebe, Jonah, & Oladipo, 2008;Pires, Bacchi, & Reichardt, 2005;Elias, 2004;Vaz, 2003;Baytas & Akbal, 2002;Naime, Vaz, & Macedo, 2001;Alam et al, 2001;Akbal & Baytas, 2000;Vaz, Naime, & Macedo, 1999;Oliveira et al, 1998;Akbal, 1999;Kumar, Venkataratnam, & Reddy, 1996;Bhandal & Singh, 1993;Mudahar, Mod, & Singh, 1991;Kitto, 1990).…”

Section: Introductionmentioning

confidence: 99%

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An investigation on gamma attenuation of soil and oil-soil samples

Taqi

Khalil

2017

Journal of Radiation Research and Applied Sciences

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In this work, the gamma mass attenuation coefficient is investigated experimentally and theoretically for soil and oil-soil samples have been collected from different locations of Kirkuk city of Iraq. The oil-soil samples have been collected from some oil stations in Kirkuk oil field. The experimental measurements have been performed to obtain mass attenuation coefficients, using gamma spectrometer contains shielded NaI (Tl) detector at the energies of 59.5, 356.5, 662, 1173 and 1332 keV. Theoretically, the simulation results of mass attenuation coefficient using XCOM and Geant4 codes have been compared with experimental results and good agreement has been observed especially for Monte Carlo simulations code Geant4.

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Section: Resultsmentioning

confidence: 54%

Section: Introductionmentioning

confidence: 99%

An investigation on gamma attenuation of soil and oil-soil samples

Taqi

Khalil

2017

Journal of Radiation Research and Applied Sciences

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“…Where µmi is the mass attenuation coefficient of the i element and wi is mass percentage of the element i in all mixture [32]. Experimental values of mass attenuation coefficient are set in comparison with theoretical values that calculated from XCOM program and the standard deviation between them are determined from equation 3:…”

Section: Methodsmentioning

confidence: 99%

Shielding Properties Enhancement of Bentonite Clay Nano Particles Coated by Polyvinyl Alcohol Polymer

Sallam¹,

Ibrahim²,

Hassan³

et al. 2021

Preprint

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Calcination process is a method used for gamma rays mass attenuation coefficient enhancement of natural bentonite clay nano-particles. This process eliminates water and organic matter from bentonite clay structure which have low mass attenuation coefficient values. There are two opposite effects on mass attenuation coefficient values; oxides content increases after calcination process which enhances mass attenuation coefficient values and particle size of calcinated bentonite increases which decreases mass attenuation coefficient values. In order to enhance mass attenuation coefficient value for natural bentonite, a physical ball milling must introduced after calcination process that decreases particle size. Calcination process is done at 700 ̊C for two hours because dehydration is completed above 500 ˚C while dehydroxylation observed at 700 ˚C. Mass attenuation coefficients are measured for calcinated and ball milled bentonite clay at different energies (662, 1173 and 1332 keV) and different pressing pressures (50, 100 and 150 bar). Narrow beam transmission technique and two different sources (Cs-137 and Co-60) are used for mass attenuation coefficient measurements, also particle size are measured by two different methods dynamic light scattering and Williamson-Hall size analyses using XRD patterns. All samples are coated by polyvinyl alcohol polymer.

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“…When measuring samples by gamma-ray spectrometry, the Full Energy Peak Efficiencies (FEPEs) for the lines of interest must be determined. This is achieved by a process known as efficiency calibration of the detector, which can be performed by means of experimental procedures [1][2][3] or theoretical-mathematical methods [4][5][6], including the Monte Carlo simulation [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Automatic modeling using PENELOPE of two HPGe detectors used for measurement of environmental samples byγ-spectrometry from a few sets of experimental efficiencies

Guerra

Rubiano

Winter

et al. 2018

Nuclear Instruments and Methods in Physics Research Section A:

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a b s t r a c tThe aim of this paper is to characterize two HPGe gamma-ray detectors used in two different laboratories for environmental radioactivity measurements, so as to perform efficiency calibrations by means of Monte Carlo Simulation. To achieve such an aim, methodologies developed in previous papers have been applied, based on the automatic optimization of the model of detector, so that the differences between computational and reference FEPEs are minimized. In this work, such reference FEPEs have been obtained experimentally from several measurements of the IAEA RGU-1 reference material for specific source-detector arrangements. The models of both detectors built through these methodologies have been validated by comparing with experimental results for several reference materials and different measurement geometries, showing deviations below 10% in most cases. (J.G. Guerra). work [16,17], in which automatic computational methodologies for the characterization of HPGe detectors have been developed.In the first paper [16], a simple methodology of characterization is proposed, consisting in an implementation of a mono-objective optimization evolutionary algorithm, called Differential Evolution or DE [18], together with the Monte Carlo Simulation code PENE-LOPE [19], so that a computational model of the detector would be built automatically, with the only requirements of an accurate set of reference FEPEs for a specific sample-detector arrangement and material of the sample, but restricted to those beakers with a diameter lower than the crystal diameter of the detector. In the second [17], the methodology proposed in the first work was upgraded, eliminating such restriction by both improving the detector model and implementing a multi-objective Differential Evolution algorithm or DEMO [20] instead of its monoobjective precursor DE. In both cases, the methodologies proved to obtain successfully a detector model which generated FEPEs equivalent to the ones taken as reference, which were calculated, for a given

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

Cited by 9 publications

References 15 publications

An investigation on gamma attenuation of soil and oil-soil samples

An investigation on gamma attenuation of soil and oil-soil samples

Shielding Properties Enhancement of Bentonite Clay Nano Particles Coated by Polyvinyl Alcohol Polymer

Automatic modeling using PENELOPE of two HPGe detectors used for measurement of environmental samples byγ-spectrometry from a few sets of experimental efficiencies

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