SELECTIVE FRAGMENTATION OF VALENCE- AND CORE-ELECTRON-EXCITEDCD4andSF6MOLECULES

M. Stankiewicz, P. Winiarczyk, J. Rius I Riu (), J. Álvarez, P. Erman, A. Karawajczyk, E. Rachlew, E. Kukk, M. Huttula and P. Hatherly
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M. Stankiewicz: Instytut Fizyki im. Mariana Smoluchowskiego, Uniwersytet Jagiellonski, ul. Reymonta 4, 30-059 Krakńw, Poland
P. Winiarczyk: Instytut Fizyki im. Mariana Smoluchowskiego, Uniwersytet Jagiellonski, ul. Reymonta 4, 30-059 Krakńw, Poland
J. Rius I Riu: SCFAB, Section of Atomic and Molecular Physics (KTH), SE-10691 Stockholm, Sweden
J. Álvarez: SCFAB, Section of Atomic and Molecular Physics (KTH), SE-10691 Stockholm, Sweden
P. Erman: SCFAB, Section of Atomic and Molecular Physics (KTH), SE-10691 Stockholm, Sweden
A. Karawajczyk: SCFAB, Section of Atomic and Molecular Physics (KTH), SE-10691 Stockholm, Sweden
E. Rachlew: SCFAB, Section of Atomic and Molecular Physics (KTH), SE-10691 Stockholm, Sweden
E. Kukk: Department of Physical Sciences, University of Oulu, FIN-90014 Oulu, Finland
M. Huttula: Department of Physical Sciences, University of Oulu, FIN-90014 Oulu, Finland
P. Hatherly: J. J. Thomson Physical Lab., The University of Reading, Whiteknights, PO Box 220, Reading, RG6 6AF, UK

Surface Review and Letters (SRL), 2002, vol. 09, issue 01, 117-123

Abstract: Electron–ion coincidence measurements with energy-resolved electrons are a powerful tool in studies of molecular fragmentation processes, since fragmentation from a specific doorway state can be monitored while the remaining reactions are discriminated. Presently, we have applied this technique in measurements of coincidence spectra of theCD4andSF6molecules after valence and core electron excitation. The newly constructed energy-resolved electron–ion coincidence station developed for this project has been used. Our results onCD4are the first demonstration of a correlation between vibrations and molecular dissociation observed in this molecule. TheSF6spectra reveal strong selectivity in dissociation following distinct electronic states of the molecule. This selectivity reflects the bonding properties of the potential surfaces involved in the studied processes. The obtained results exemplify the potential of the new multicoincidence station used in this work.

Keywords: 33.80.-b; 39.90.+d; 82.37.-j (search for similar items in EconPapers)
Date: 2002
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DOI: 10.1142/S0218625X02002105

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