Atom desorption energies for sodium clusters

  • The desorption energies of supported sodium clusters have been determined as a function of cluster size. Na n clusters were formed by surface diffusion of sodium atoms adsorbed from a thermal atomic beam on a LiF(100) single crystal. Measurements have been performed by temperature programmed thermal desorption. The signals reflect fractional order desorption kinetics. The average cluster size could be controlled by varying the total number of sodium atoms on the surface. It was determined fromThe desorption energies of supported sodium clusters have been determined as a function of cluster size. Na n clusters were formed by surface diffusion of sodium atoms adsorbed from a thermal atomic beam on a LiF(100) single crystal. Measurements have been performed by temperature programmed thermal desorption. The signals reflect fractional order desorption kinetics. The average cluster size could be controlled by varying the total number of sodium atoms on the surface. It was determined from scattering experiments. We find that the binding energies vary between 0.55 and 0.8 eV and only approach a constant value for clusters with diameters as large as 1,000 Å.show moreshow less

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Metadaten
Author:Michael Vollmer, Frank Träger
DOI:https://doi.org/10.1007/BF01384818
Parent Title (English):In: Zeitschrift für Physik / D Vol. 3 (1986) 2, pp 291-297
Document Type:Article
Language:English
Year of Publishing:1986
Date of Publication (online):2014/01/13
Release Date:2014/01/13
First Page:291
Last Page:297
Dewey Decimal Classification:Naturwissenschaften und Mathematik / Physik / Physik
University Bibliography:Hochschulbibliographie
Licence (German):Creative Commons - Namensnennung, Nicht kommerziell, Keine Bearbeitung