1999 | OriginalPaper | Buchkapitel
Critical- and Wetting-Phenomena Near the Liquid-Vapour Critical Point of Metals
verfasst von : F. Hensel
Erschienen in: High Pressure Molecular Science
Verlag: Springer Netherlands
Enthalten in: Professional Book Archive
Aktivieren Sie unsere intelligente Suche, um passende Fachinhalte oder Patente zu finden.
Wählen Sie Textabschnitte aus um mit Künstlicher Intelligenz passenden Patente zu finden. powered by
Markieren Sie Textabschnitte, um KI-gestützt weitere passende Inhalte zu finden. powered by
Our understanding of the liquid-vapour equilibrium in metallic systems has increased enormously in the past two decades. Much of this has been stimulated by a series of pioneering papers of Mott [1] on the metal-non-metal transition which shows up when a liquid metal is heated to the region of the liquid-vapour critical point. The existence of this transition implies that the liquid-vapour phase transition of fluid metals is distinct from that of normal insulating fluids such as inert gases. An inert-gas atom retains its identity in the condensed phase and the pair potential which determines the properties of the dilute vapour phase is supplemented to a limited degree by many-body interactions, in the total potential energy of the dense phase [2]. In contrast, the electronic structures of the two coexisting phases, liquid and vapour, of fluid metals may be vastly different. The essntial point is that the metallic state is a collective phenomenon existing only when the density of atoms is sufficiently large. Unlike inert gases the electronic stucture in the high-density liquid is very different from that of an atom in the dilute vapour.