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Issue 24, 2011
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Inelastic X-ray scattering and vibrational effects at the K-edges of gaseous N2, N2O, and CO2

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Abstract

We report non-resonant inelastic X-ray scattering experiments of several gaseous samples in the inner-shell excitation energy range. The experimental near-edge spectra from all the K-edges of N2, N2O, and CO2 including the momentum transfer dependence are presented. The results are analyzed using density functional theory calculations that accurately reproduce the experimental spectral features. We observe vibrational effects in the measured spectrum and in the calculations the atomic motion is modeled using the Franck–Condon approximation and the linear coupling model. Our findings show that vibrational effects cannot be neglected in the analysis of high resolution inelastic X-ray scattering spectroscopy. The results also support the validity of the transition potential approximation for calculating core excited state potential energy surfaces.

Graphical abstract: Inelastic X-ray scattering and vibrational effects at the K-edges of gaseous N2, N2O, and CO2

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Publication details

The article was received on 03 Feb 2011, accepted on 21 Apr 2011 and first published on 19 May 2011


Article type: Paper
DOI: 10.1039/C1CP20295B
Citation: Phys. Chem. Chem. Phys., 2011,13, 11678-11685
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    Inelastic X-ray scattering and vibrational effects at the K-edges of gaseous N2, N2O, and CO2

    A. Sakko, S. Galambosi, J. Inkinen, T. Pylkkänen, M. Hakala, S. Huotari and K. Hämäläinen, Phys. Chem. Chem. Phys., 2011, 13, 11678
    DOI: 10.1039/C1CP20295B

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