Peak efficiency calibration for attenuation corrected cylindrical sources in gamma ray spectrometry by the use of a point source

Aguiar, Julio C.; Galiano, Eduardo; Fernández, Jorge Eduardo Chira

doi:10.1016/j.apradiso.2006.05.014

Cited by 25 publications

(6 citation statements)

References 11 publications

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“…Many studies have addressed the issue of self-absorption (e.g. Huy and Luyen, 2005;Aguiar et al, 2006;Khater and 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.…”

Section: Correcting Self-absorptionmentioning

confidence: 99%

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

2022

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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 standardize gamma-spectrometric procedures for the purpose of determining accurate parent nuclide activities in natural samples, we outline the basics of gamma spectrometry and practical laboratory procedures here. 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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Section: Correcting Self-absorptionmentioning

confidence: 99%

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

2022

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“…Many studies have addressed the issue of self-absorption (e.g. 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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“…For example if a gamma emitter was dispersed evenly throughout a cylinder which is 2 m in radius (Rs) and 4 m tall (h) then ignoring absorption effects then the counting efficiency will be very low as the vast majority of the gamma photons will never enter a modest sized detector. Using the equation (Aguiar, Galiano, & Fernandez, 2006) the difference in geometric efficiency between the counting efficiency of the cylinder with a point detector arranged coaxially at distance d from the circular surface of the cylinder is given by:…”

Section: Charcoalmentioning

confidence: 99%

Reactor accident chemistry an update

Foreman

2018

Cogent Chemistry

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A review and discussion of some of the literature on the subject of serious nuclear reactor accidents. This review addresses some biological issues such as the influence of dose rate on the ability of radiation to cause harm, the chemistry of a selection of serious accidents and the behaviour of a series of important fission products and the actinides. This review is intended for scientists with a professional interest in nuclear reactors, chemists in general and I expect that it will be of use to historians with an interest in the nuclear industry and its relationship with wider society.

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Peak efficiency calibration for attenuation corrected cylindrical sources in gamma ray spectrometry by the use of a point source

Cited by 25 publications

References 11 publications

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

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

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

Reactor accident chemistry an update

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