Estimation of tritium transfer parameters in biphasic lithium ceramic based on the results of reactor irradiation experiments
Kulsartov T. Zaurbekova Z. Knitter R. Leys J. Shaimerdenov A. Chikhray Y. Askerbekov S. Kenzhina I. Yelishenkov A.
October 2025Elsevier Ltd
Fusion Engineering and Design
2025#219
It is expected that the development of thermonuclear fusion will be able to easily satisfy the energy needs of humanity. There are enough fuel reserves for the fusion reaction: tritium can be bred via a 6Li(n,α)3H reaction from lithium, which is common in nature, and deuterium is quite easily extracted from seawater. One of the problems on the way to implement thermonuclear fusion today is the search for and development of breeder materials that can withstand the high radiation and energy loads that are expected in a long-pulsed fusion devices. Various types of lithium-containing ceramic materials are currently being actively studied for use as a breeder material in helium-cooled breeder blanket concepts. This study focuses on the methodology and results of calculations of tritium residence time in the samples of biphasic lithium ceramic pebble bed containing nominal 65 mol % lithium orthosilicate and 35 mol % lithium metatitanate (pebble diameter 0.25 -1.250 mm). The values of the tritium residence time obtained as a result of modeling the release of tritium from ceramics within the framework of the diffusion-desorption model have a temperature dependence of lgτ = -1.374+1676/t. They are in good agreement with the literature data, suggesting that the tritium residence time increases with increasing open porosity.
Biphasic lithium ceramic , Helium , Neutron irradiation , Tritium , Tritium release
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Satbayev University, Almaty, Kazakhstan
Institute of Experimental and Theoretical Physics, al-Farabi Kazakh National University, Almaty, Kazakhstan
al-Farabi Kazakh National University, Almaty, Kazakhstan
Karlsruhe Institute of Technology, Karlsruhe, Germany
Institute of Nuclear Physics, Almaty, Kazakhstan
Kazakh-Britain Technical University, Almaty, Kazakhstan
Satbayev University
Institute of Experimental and Theoretical Physics
al-Farabi Kazakh National University
Karlsruhe Institute of Technology
Institute of Nuclear Physics
Kazakh-Britain Technical University
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