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- W2162193150 abstract "This paper surveys quantum effects in diffusion, with special emphasis on isotope effects for hydrogen isotopes in metals. The various possible contributions to the isotope effect are surveyed, and their importance assessed. The bcc metals (V, Nb, Ta) and fee metals (Cu, Ni, Pd) involve different mechanisms, and these are still doubts in detail about some aspects. A full understanding requires knowledge of the hydrogen-metal interactions. Recent theoretical work supports some of the qualitative ideas discussed, and offers promise for future analyses. Ce papier passe en revue les effets quantiques en diffusion en mettant particulièrement l'accent sur les effets isotopiques pour les isotopes de l'hydrogène dans les métaux. Les différentes contributions possibles à l'effet isotopique sont passées en revue et leur importance est évaluée. Les métaux cubiques centrés (V, Nb, Ta) et les métaux cubiques à faces centrées (Cu, Ni, Pd) impliquent différents mécanismes, et il existe encore des doutes dans le détail sur quelques aspects. Une compréhension complète requiert une connaissance des interactions métal-hydrogène. Un travail théorique récent supporte quelquesunes des idées quantitatives présentées et offre des promesses pour des analyses futures. In dieser Arbeit werden Quanteneffekte bei der Diffusion mit besonderer Betonung des Isotopieeffekts für die Wasserstoffisotope in Metallen betrachtet. Die verschiedenen möglichen Beiträge zum Isotopieeffekt werden abgeschätzt und ihre Bedeutung kritisch bewertet. Die krz. Metalle V, Nb und Ta und kfz. Metalle Cu, Ni und Pd betreffen unterschiedliche Mechanismen, über einige Gesichtspunkte bestehen noch Zweifel. Ein volles Verständnis erfordert die Kenntnis der Wasserstoff-Metall-Wechselwirkungen. Neuere theoretische Arbeiten stützen einige der diskutierten qualitativen Ideen und bieten gute Aussichten für zukünftige Analysen." @default.
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- W2162193150 date "1978-02-01" @default.
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- W2162193150 title "Non- classical diffusion processes" @default.
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- W2162193150 doi "https://doi.org/10.1016/0022-3115(78)90239-8" @default.
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