Theoretical study of depth profiling with gamma-and X-ray spectrometry based on measurements of intensity ratios

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F17%3A00306449" target="_blank" >RIV/68407700:21340/17:00306449 - isvavai.cz</a>
Result on the web
<a href="http://authors.elsevier.com/sd/article/S0969806X17300701" target="_blank" >http://authors.elsevier.com/sd/article/S0969806X17300701</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.radphyschem.2017.01.014" target="_blank" >10.1016/j.radphyschem.2017.01.014</a>

Result language
angličtina
Original language name
Theoretical study of depth profiling with gamma-and X-ray spectrometry based on measurements of intensity ratios
Original language description
This article describes the method for the estimation of depth distribution of radionuclides in a material with gamma-ray spectrometry, and the identification of a layered structure of a material with X-ray fluorescence analysis. This method is based on the measurement of a ratio of two gamma or X-ray lines of a radionuclide or a chemical element, respectively. Its principle consists in different attenuation coefficient for these two lines in a measured material. The main aim of this investigation was to show how the detected ratio of these two lines depends on depth distribution of an analyte and mainly how this ratio depends on density and chemical composition of measured materials. Several different calculation arrangements were made and a lot of Monte Carlo simulation with the code MCNP – Monte Carlo N Particle (Briesmeister, 2000) was performed to answer these questions. For X-ray spectrometry, the calculated Kα/Kβ diagrams were found to be almost independent upon matrix density and composition. Thanks to this phenomenon it would be possible to draw only one Kα/Kβ diagram for an element whose depth distribution is examined.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Project
<a href="/en/project/DF13P01OVV010" target="_blank" >DF13P01OVV010: Historical technologies and modern methods of research. The interpretative possibilities of the specialized methods of the research of the medieval artworks using the innovative technologies.</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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