Jahn-Teller Coupling and Fragmentation after Core-shell Excitation ini CF4 Investigated by Partial-ion-yield Spectroscopy

Authors

Renaud Guillemin, CNRS, Laboratoire de Chimie Physique-Matière et RayonnementFollow
Wayne C. Stolte, University of Nevada, Las VegasFollow
Maria Novella Piancastelli, Uppsala UniversityFollow
Dennis W. Lindle, University of Nevada, Las VegasFollow

Document Type

Article

Publication Date

10-2010

Publication Title

Physical Review A

Volume

82

Issue

043427

First page number:

7

Abstract

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 Td to the C3v point group as well as preferential orientation with respect to the polarization vector of the incident radiation.

Keywords

Absorption spectra; Carbon compounds; Electron configuration; Electronic excitation; Fluorine compound; Ions; Photoabsorption

Disciplines

Analytical Chemistry | Biological and Chemical Physics | Organic Chemistry | Physical Chemistry

Language

English

Permissions

Copyright American Physical Society, used with permission

Repository Citation

Guillemin, R., Stolte, W. C., Piancastelli, M. N., Lindle, D. W. (2010). Jahn-Teller Coupling and Fragmentation after Core-shell Excitation ini CF4 Investigated by Partial-ion-yield Spectroscopy. Physical Review A, 82(043427), 7.
https://digitalscholarship.unlv.edu/chem_fac_articles/4