Theoretical study of depth profiling with gamma- and x-ray spectrometry based on measurements of intensity ratios
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F16%3A00300130" target="_blank" >RIV/68407700:21340/16:00300130 - isvavai.cz</a>
Result on the web
<a href="http://www.surrey.ac.uk/physics/news/events/icda-2/programme/24-June-2016-2nd%20International%20Conference%20on%20Dosimetry%20and%20its%20Applications.pdf" target="_blank" >http://www.surrey.ac.uk/physics/news/events/icda-2/programme/24-June-2016-2nd%20International%20Conference%20on%20Dosimetry%20and%20its%20Applications.pdf</a>
DOI - Digital Object Identifier
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Alternative languages
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
The gamma- and x-ray spectrometry is a powerful tool for analysis of materials. Gamma spectrometry (GS) is used to identification and quantification of radionuclides, whereas the stimulated emission of x-ray radiation is applied to elemental analysis with an x-ray fluorescence method (XRF). Samples for laboratory GS and destructive XRF are usually homogenized before the analysis. However, the homogeneous composition is not ensured in the case of in-situ GS or non-destructive XRF. The principle of the proposed techniques lay in the different attenuation coefficients for at least two x-ray or gamma-ray lines of a certain element or radionuclide, respectively. If an analyte is present at some depth, its radiation has to penetrate through thick layer of the matrix, and the photon fluxes are significantly changed. For instance, 214Bi is a member of the uranium series and in present in soil or walls of building. Two gamma lines of this radionuclide can be detected with an HPGe detector, and thus net peak area ratio of these lines is related to depth distribution of this radionuclide. Analogously in XRF, ratios of Kα, K, and L lines of an element can provide us with information on depth distribution of this element in an analysed object.
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
AL - Art, architecture, cultural heritage
OECD FORD branch
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Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů