Low-energy electron attachment to SF₆ molecules: Vibrational structure in the cross-section for SF₆⁻ formation up to 1 eV
- Braun, M. Fachbereich Physik, Technische Universität Kaiserslautern, Germany
- Ruf, M.-W. Fachbereich Physik, Technische Universität Kaiserslautern, Germany
- Hotop, Hartmut Fachbereich Physik, Technische Universität Kaiserslautern, Germany
- Allan, Michael Chemistry Department, University of Fribourg, Switzerland
-
2006
Published in:
- Chemical Physics Letters. - 2006, vol. 419, no. 4-6, p. 517-522
English
In high resolution electron attachment to SF₆, cusp structure due to interchannel coupling has been observed in the cross-section for SF₅⁻ formation at the thresholds for vibrational excitation of the SF₆(v₁) mode up to v₁ = 10. It is superimposed on the broad band peaking around 0.55 eV which has been previously attributed to attachment into a repulsive potential surface and subsequent direct dissociation. The newly observed vibrational structure as well as electron energy loss spectra (which exhibit strong excitation of the v₁ mode up to high quantum numbers) indicate, however, that both the channel yielding the long-lived SF₆⁻ anions and the dissociative SF₅⁻ + F channel have a common primary attachment process, mediated by the same SF₆⁻ scattering state and strongly coupled to the process of vibrational excitation.
- Faculty
- Faculté des sciences et de médecine
- Department
- Département de Chimie
- Language
-
- English
- Classification
- Physics
- License
- License undefined
- Identifiers
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- RERO DOC 5814
- DOI 10.1016/j.cplett.2005.12.005
- Persistent URL
- https://folia.unifr.ch/unifr/documents/299968
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