Photon-energy dependence of single-photon simultaneous core ionization and core excitation in CO2

S. Carniato, P. Selles, P. Lablanquie, J. Palaudoux, L. Andric, Motoyoshi Nakano, Y. Hikosaka, K. Ito, T. Marchenko, O. Travnikova, G. Goldsztejn, L. Journel, R. Guillemin, D. Céolin, M. Simon, M. N. Piancastelli, F. Penent

研究成果: Article

13 引用 (Scopus)

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We have studied the K-2V process corresponding to simultaneous K-shell ionization and K-shell excitation in the CO2 molecule. We define these K-2V states as super shake-up, at variance with the "conventional" K-1v-1V shake-up states. While the nature and evolution with photon energy of the conventional shake-up satellites has been the object of many studies, no such data on a large photon-energy range were previously reported on super shake-up. The CO2 molecule is a textbook example because it exhibits two well-isolated K-2V resonances (with V being 2πu∗ and 5σg∗) with different symmetries resulting from shake-up processes of different origin populated in comparable proportions. The variation of the excitation cross section of these two resonances with photon energy is reported, using two different experimental approaches, which sheds light on the excitation mechanisms. Furthermore, double-core-hole spectroscopy is shown to be able to integrate and even expand information provided by conventional single-core-hole X-ray Photoelectron Spectroscopy (XPS) and Near-Edge X-ray Absorption Fine Structure (NEXAFS) techniques, revealing, for instance, g-g dipole forbidden transitions which are only excited in NEXAFS spectra through vibronic coupling.

元の言語English
記事番号013416
ジャーナルPhysical Review A
94
発行部数1
DOI
出版物ステータスPublished - 2016 7 20
外部発表Yes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

フィンガープリント Photon-energy dependence of single-photon simultaneous core ionization and core excitation in CO<sub>2</sub>' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

  • これを引用

    Carniato, S., Selles, P., Lablanquie, P., Palaudoux, J., Andric, L., Nakano, M., Hikosaka, Y., Ito, K., Marchenko, T., Travnikova, O., Goldsztejn, G., Journel, L., Guillemin, R., Céolin, D., Simon, M., Piancastelli, M. N., & Penent, F. (2016). Photon-energy dependence of single-photon simultaneous core ionization and core excitation in CO2 Physical Review A, 94(1), [013416]. https://doi.org/10.1103/PhysRevA.94.013416