Vibrationally resolved partial cross sections and asymmetry parameters for oxygen K-shell photoionization of the CO2 molecule

M. Hoshino, K. Nakagawa, T. Tanaka, M. Kitajima, H. Tanaka, A. De Fanis, D. A. Mistrov, X. O. Brykalova, A. A. Pavlychev, T. Hatamoto, K. Ueda

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Abstract

O K-shell photoionization of the CO2 molecule causes antisymmetric vibrations v3′ in the core-ionized molecule. The v3′-resolved partial cross sections and asymmetry parameters are measured in the Σu shape resonance region above the O K-shell ionization threshold of the CO2 molecule. Neither the shape resonance energy in nor the value of shows v3′-dependence. This v3′-independent nature is attributed to the fact that v 3′ vibrations do not cause any change of the size of the potential box responsible for the formation of the shape resonance. Multiple scattering calculations employing the v3′-dependent fixed-nuclei approximation reproduce well the measured v3′- resolved partial cross sections.

Original languageEnglish
Article number021
Pages (from-to)3655-3663
Number of pages9
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Volume39
Issue number17
DOIs
Publication statusPublished - 2006 Sep 14

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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    Hoshino, M., Nakagawa, K., Tanaka, T., Kitajima, M., Tanaka, H., De Fanis, A., Mistrov, D. A., Brykalova, X. O., Pavlychev, A. A., Hatamoto, T., & Ueda, K. (2006). Vibrationally resolved partial cross sections and asymmetry parameters for oxygen K-shell photoionization of the CO2 molecule. Journal of Physics B: Atomic, Molecular and Optical Physics, 39(17), 3655-3663. [021]. https://doi.org/10.1088/0953-4075/39/17/021