TY - JOUR
T1 - Electronic Doppler effect in resonant Auger decay of CO molecules upon excitation near a shake-up Π resonance
AU - Sorensen, S. L.
AU - Kitajima, M.
AU - Tanaka, T.
AU - Hoshino, M.
AU - Tanaka, H.
AU - Tamenori, Y.
AU - Sankari, R.
AU - Piancastelli, M. N.
AU - Ueda, K.
AU - Velkov, Y.
AU - Minkov, I.
AU - Carravetta, V.
AU - Gel'Mukhanov, F.
PY - 2007/12/14
Y1 - 2007/12/14
N2 - We present an experimental observation of the electronic Doppler effect in resonant Auger spectra upon core excitation slightly above the carbon K edge of the CO molecule. Thus the electronic Doppler effect has been identified in above-threshold excitation, and in a transition of Π symmetry. Ab initio calculations of the potential energy curves of the relevant states of CO and the wave packet technique have been employed to provide a theoretical background to the experimental studies. The weak feature around 299.4 eV in the photoabsorption spectrum, whose decay has been investigated by the present experiment, is assigned to double (core-valence) excitations to C 1s shake-up states 1 sC -1 1 π-1 π*2 with a strong dissociative character, and the Doppler splitting of the atomic peak has been reproduced by the simulation.
AB - We present an experimental observation of the electronic Doppler effect in resonant Auger spectra upon core excitation slightly above the carbon K edge of the CO molecule. Thus the electronic Doppler effect has been identified in above-threshold excitation, and in a transition of Π symmetry. Ab initio calculations of the potential energy curves of the relevant states of CO and the wave packet technique have been employed to provide a theoretical background to the experimental studies. The weak feature around 299.4 eV in the photoabsorption spectrum, whose decay has been investigated by the present experiment, is assigned to double (core-valence) excitations to C 1s shake-up states 1 sC -1 1 π-1 π*2 with a strong dissociative character, and the Doppler splitting of the atomic peak has been reproduced by the simulation.
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U2 - 10.1103/PhysRevA.76.062704
DO - 10.1103/PhysRevA.76.062704
M3 - Article
AN - SCOPUS:37249052816
VL - 76
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
SN - 1050-2947
IS - 6
M1 - 062704
ER -