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Zeitschrift für Physikalische Chemie

International journal of research in physical chemistry and chemical physics

Ed. by Rademann, Klaus

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Surface-Induced Dissociation as a Probe for the Energetics and Structure of Lead Clusters

B. Waldschmidt / M. Turra / R. Schäfer

Citation Information: Zeitschrift für Physikalische Chemie. Volume 221, Issue 11-12, Pages 1569–1579, ISSN (Online) 2196-7156, ISSN (Print) 0942-9352, DOI: https://doi.org/10.1524/zpch.2007.221.11-12.1569, September 2009

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Fragmentation of lead cluster ions (PbN+: N = 2–20) in low-energy collisions with a highly oriented pyrolytic graphite surface has been investigated by means of a tandem time-of-flight mass spectrometer. At low incident energies, all clusters fragment dominantly by an atom loss process. This behavior is characteristic for clusters of metallic elements, but in contrast to SiN+, GeN+ and SnN+ clusters. The results therefore demonstrate differences in the electronic and geometric structure between lead clusters and the lighter group-14 element clusters. The low energy dissociation patterns were compared successfully with a recent theoretical study on lead cluster fragmentation, supporting the idea, that lead clusters cations already show signatures of metallic behavior unlike SiN+, GeN+ and SnN+ clusters of the same size.

Keywords: Metal Cluster; Energetics; Structure; Fragmentation Process

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