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Jahn-Teller coupling and fragmentation after core-shell excitation in CF4 investigated by partial-ion-yield spectroscopy
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Surface and Interface Science.
2010 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 82, no 4, 043427- p.Article in journal (Refereed) Published
Abstract [en]

We investigate fragmentation processes induced by core-level photoexcitation in CF4 at both the carbon and fluorine K edges by means of partial-ion-yield spectroscopy. The molecule CF4 is a textbook example of systems in which Jahn-Teller coupling strongly manifests itself in the photoabsorption spectrum. Spectral features related to Jahn-Teller and quasi-Jahn-Teller splitting are observed, and important differences in the fragmentation pathways are revealed depending on the symmetries of the core-excited states. We interpret these experimental observations on the grounds of symmetry lowering from the T-d to the C-3v point group as well as preferential orientation with respect to the polarization vector of the incident radiation.

Place, publisher, year, edition, pages
2010. Vol. 82, no 4, 043427- p.
National Category
Physical Sciences
URN: urn:nbn:se:uu:diva-133589DOI: 10.1103/PhysRevA.82.043427ISI: 000283347300010OAI: oai:DiVA.org:uu-133589DiVA: diva2:370211
Available from: 2010-11-15 Created: 2010-11-11 Last updated: 2011-02-23Bibliographically approved

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