TY - JOUR
T1 - High-energy non-Franck-Condon vibrational excitation of CH4 by intramolecular photoelectron diffraction
AU - Argenti, L.
AU - Plésiat, E.
AU - Kukk, E.
AU - Ueda, K.
AU - Decleva, P.
AU - Martín, F.
PY - 2012
Y1 - 2012
N2 - Distinct oscillations in vibrationally resolved cross section ratios for the photoionization of CH4 from the C 1s orbital at photon energies as high as 1keV are predicted. The oscillations are attributed to the different relative vibrational excitation due to the scattering of the photoelectron by the peripheral hydrogen atoms. The latter effect is also responsible for the well known EXAFS oscillations in the integrated photoelectron spectrum. The calculations are performed with an ab-initio DFT method [1], as well as with a single-particle semi-analytical model, which incorporate both the effect of the nuclear recoil and of the Coulomb corrections.
AB - Distinct oscillations in vibrationally resolved cross section ratios for the photoionization of CH4 from the C 1s orbital at photon energies as high as 1keV are predicted. The oscillations are attributed to the different relative vibrational excitation due to the scattering of the photoelectron by the peripheral hydrogen atoms. The latter effect is also responsible for the well known EXAFS oscillations in the integrated photoelectron spectrum. The calculations are performed with an ab-initio DFT method [1], as well as with a single-particle semi-analytical model, which incorporate both the effect of the nuclear recoil and of the Coulomb corrections.
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U2 - 10.1088/1742-6596/388/2/022058
DO - 10.1088/1742-6596/388/2/022058
M3 - Conference article
AN - SCOPUS:84870593732
VL - 388
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - PART 2
M1 - 022058
T2 - 27th International Conference on Photonic, Electronic and Atomic Collisions, ICPEAC 2011
Y2 - 27 July 2011 through 2 August 2011
ER -