Open AccessAnisotropic Ultrafast Dissociation Probed by the Doppler Effect in Resonant Photoemission fromC F 4
Author(s) -
K. Ueda,
M. Kitajima,
A. De Fanis,
Takuya Furuta,
H. Shindo,
Hiroki Tanaka,
K. Okada,
R. Feifel,
S. L. Sörensen,
Hiroaki Yoshida,
Yasunori Senba
Publication year - 2003
Publication title -
physical review letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.688
H-Index - 673
eISSN - 1079-7114
pISSN - 0031-9007
DOI - 10.1103/physrevlett.90.233006
Subject(s) - physics , excited state , atomic physics , auger , excitation , electron , kinetic energy , photon , anisotropy , polarization (electrochemistry) , dissociation (chemistry) , optics , chemistry , nuclear physics , quantum mechanics
The resonant Auger spectrum from the decay of F 1s-excited CF4 is measured. Several lines exhibit a nondispersive kinetic energy as the exciting photon energy is tuned through the resonance region. The F 1s(-1) atomiclike Auger line is split into two components due to the emission of Auger electrons by a fragment in motion, when electron emission is observed along the polarization vector of the light. This Doppler splitting is direct evidence that the core excitation leads to T-d-->C-3v symmetry lowering, by elongation of a specific C-F bond preferentially aligned along the polarization vector of the incident photon
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