Evidently, the diffusion coefficient is delicate to impurities or structural problems while in the crystal, but that remains being quantified. For our tough estimates of the time at temperature necessary to remove the hydrogen from our samples, the hydrogen diffusion coefficient selected is the fact offered by Belonoshko et al. https://1001bookmarks.com/story17988967/new-step-by-step-map-for-natural-pukhraj-from-sri-lanka