Varying Coefficients of Diffusion of Ba-133(2+) and Cs-137(+) in Granite
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F18%3A00327932" target="_blank" >RIV/68407700:21110/18:00327932 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1063/1.5043732" target="_blank" >http://dx.doi.org/10.1063/1.5043732</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/1.5043732" target="_blank" >10.1063/1.5043732</a>
Alternative languages
Result language
angličtina
Original language name
Varying Coefficients of Diffusion of Ba-133(2+) and Cs-137(+) in Granite
Original language description
Diffusion coefficients, D, of radionuclides in porous media are usually calculated as single values. The reason is that experimental concentration profiles are fitted with theoretical models in which D is constant. This approach could be rather inadequate. For example, potentially large discrepancies may arise when predicting radionuclides penetration through encasements in radioactive waste repositories at long timescales. In this paper we present an inverse approach based on the Bolztmann-Matano method to calculate the apparent diffusion coefficient of a sorbing radionuclide in saturated porous materials that is not constant but is a function of the radionuclide concentration. We apply our results to the diffusion of Ba-133(2+) and Cs-137(+) in two types of granite.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20501 - Materials engineering
Result continuities
Project
<a href="/en/project/GA17-11635S" target="_blank" >GA17-11635S: Cement composite for radionuclide encasement</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Proceedings of International Conference on Numerical Analysis and Applied Mathematics 2017 (ICNAAM-2017)
ISBN
978-0-7354-1690-1
ISSN
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e-ISSN
0094-243X
Number of pages
4
Pages from-to
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Publisher name
AIP Conference Proceedings
Place of publication
New York
Event location
Thessaloniki
Event date
Sep 25, 2017
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000445105400081