Author:
Karpov Sergiy,Ruzhytskyi Valeryi,Tolstolutska Galyna,Rostova Hanna
Abstract
The behavior of implanted deuterium in advanced lithium orthosilicate (Li4SiO4) pellets with addition of lithium metatitanate (Li2TiO3), and in reference Li4SiO4 pellets, has been investigated. Thermal desorption (TD) spectroscopy was used to study the deuterium interaction with radiation defects in materials. Computational evaluation of deuterium desorption within the framework of the diffusion-trapping model allowed to associate characteristics of experimental TD spectra with specific trapping sites in the material. It was found that deuterium desorption is limited mainly by intragranular diffusion of deuterium and its trapping by radiation defects associated with Li-vacancy traps. Deuterium gas release from both ceramics demonstrated similar trend indicating weak dependence of deuterium trapping behavior on phase composition. The change of the morphology and elemental composition of the pellets surface has been analyzed. SEM examination indicated that ion irradiation and subsequent thermal desorption annealing of two-phase ceramics leads to an increase in surface destruction processes.
Publisher
Problems of Atomic Science and Technology
Reference22 articles.
1. Artūrs Zariņš. Formation, accumulation and annihilation of Radiation-induced defects and radiolysis products in advanced two-phase ceramic tritium breeder pebbles: Doctoral thesis, 2018, 118 p.
2. Y. Poitevin et al. Tritium breeder blankets design and technologies in Europe: Development status of ITER Test Blanket Modules, test & qualification strategy and roadmap towards DEMO // Fusion Engineering and Design. 2010, v. 85, p. 2340-2347.
3. R. Knitter, P. Chaudhuri, Y.J. Feng, T. Hoshino, and I.-K. Yu. Recent developments of solid breeder fabrication // Journal of Nuclear Materials. 2013, v. 442, s420-s424.
4. L.M. Giancarli et al. Overview of the ITER TBM Program // Fusion Engineering and Design. 2012, v. 87, p. 395-402.
5. A. Vītiņš, G. Ķizāne, J. Tīliks, J. Tīliks, and E. Kolodinska. Tritium release from breeding blanket materials in high magnetic field // Fusion Engineering and Design. 2007, v. 82, p. 2341-2346.
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