Open AccessCore-hole localization and ultra-fast dissociation in SF6
Author(s) -
Victor Ekholm,
G. S. Chiuzbian,
Alessandro Nicolaou,
M. Guarise,
M. Simon,
Nicolas Jaouen,
J. Lüning,
C. F. Hague,
Faris Gel’mukhanov,
Michael Odelius,
Olle Björneholm,
JanErik Rubensson
Publication year - 2020
Publication title -
journal of physics. b, atomic molecular and optical physics/journal of physics. b, atomic, molecular and optical physics
Language(s) - English
Resource type - Journals
eISSN - 1361-6455
pISSN - 0953-4075
DOI - 10.1088/1361-6455/aba204
Subject(s) - atomic physics , scattering , dissociation (chemistry) , inelastic scattering , point reflection , excited state , parity (physics) , vibronic coupling , physics , polarization (electrochemistry) , chemistry , molecular physics , condensed matter physics , optics
Resonant inelastic x-ray scattering spectra excited at the fluorine K resonances of SF 6 have been recorded. While a small but significant propensity for electronically parity-allowed transitions is found, the observation of parity-forbidden electronic transitions is attributed to vibronic coupling that breaks the global inversion symmetry of the electronic wavefunction and localizes the core hole. The dependence of the scattering cross section on the polarization of the incident radiation and the scattering angle is interpreted in terms of local π / σ symmetry around the S–F bond. This symmetry selectivity prevails during the dissociation that occurs during the scattering process.