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Surface Collisions of Small Cluster Ions at Incident Energies 10-102 eV
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SYSNO ASEP 0101048 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Surface Collisions of Small Cluster Ions at Incident Energies 10-102 eV Title Srážky malých iontových klastrů v povrchy při srážkových energií 10-102 eV Author(s) Herman, Zdeněk (UFCH-W) RID Source Title International Journal of Mass Spectrometry. - : Elsevier - ISSN 1387-3806
Roč. 233, - (2004), s. 361-371Number of pages 11 s. Language eng - English Country NL - Netherlands Keywords surface collisions ; cluster ions ; unimolecular dissociation Subject RIV CF - Physical ; Theoretical Chemistry R&D Projects ME 561 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z4040901 - UFCH-W Annotation A short review of the field of collisions of slow cluster ions with surfaces is presented. Results of a series of studies of slow cluster ion collisions with surfaces, carried out in Innsbruck, are summarized and discussed. The incident ions were fullerene multiply-charged ions and small cluster ions of polyatomic molecules (acetone and acetonitrile radical cations, protonated ethanol, clustered by 2-4 monomer molecules). For collisions of multiply-charged fullerene cations C60z+ (z from 1 to 5, incident energies 100-500 eV) only singly-charged product ions were observed formed by sequential loss of C2 units. The effect of multiple-charge of the projectile on its fragmentation was less pronounced than expected from a full conversion of electronic energy gained in the surface neutralization process. Fragmentation upon surface collision excitation of acetone, acetonitrile and protonated ethanol cluster ions (incident energies 10-80 eV) was found to follow the unimolecular. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2005
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