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Lattice expansion of niobium and tantalum due to dissolved hydrogen and deuteriumby: H. Pfeiffer, H. Peisl
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AbstractThe volume change of niobium and tantalum due to interstitially dissolved hydrogen and deuterium has been determined by means of X-ray Bragg scattering. The volume increase in niobium is the same for hydrogen and deuterium [delta][nu]=(0.174+/-0.005)[Omega]([Omega]: atomic volume). A small isotope effect has been observed in the case of tantalum, [Delta][nu]=(0.155+/-0.002) [Omega] for hydrogen and [Delta][nu]=(0.143+/-0.005)[Omega] for deuterium.
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