Abstract
In continuation of a previous study of Li-D films’ interactions with atmospheric gases, dynamics of Li-D codeposit interaction with water vapor was studied. Li-D codeposits very actively react with water vapor, leading to formation of LiOH and release of major part of deuterium. The dynamics of the film mass (thickness of the reacted layer) was well described using a diffusion-based model at the early stage of the reaction and using a combined nucleation-diffusion based model in whole period of time. The most of D remaining in the film after exposure to water vapor is released during a heatup below 550K, that is attributed to LiOH decomposition and occurs at lower temperatures than in the case of initial Li-D film.
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