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Projection of Si 1 s photoexcited orbitals into resonant Auger electron spectra in KLL decays of Si(CH 3 ) 4 and SiF 4

Suzuki, I. H. ; Kono, Y. ; Ikeda, A. ; Ouchi, T. ; Ueda, K. ; Takahashi, O. ; Higuchi, I. ; Tamenori, Y. ; Nagaoka, S.

The Journal of Chemical Physics, 28 February 2011, Vol.134(8) [Periódico revisado por pares]

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  • Título:
    Projection of Si 1 s photoexcited orbitals into resonant Auger electron spectra in KLL decays of Si(CH 3 ) 4 and SiF 4
  • Autor: Suzuki, I. H. ; Kono, Y. ; Ikeda, A. ; Ouchi, T. ; Ueda, K. ; Takahashi, O. ; Higuchi, I. ; Tamenori, Y. ; Nagaoka, S.
  • Assuntos: Articles
  • É parte de: The Journal of Chemical Physics, 28 February 2011, Vol.134(8)
  • Descrição: Spectator resonant KL 23 L 23 Auger electron spectra have been measured in the Si 1 s photoexcitation region of Si(CH 3 ) 4 using monochromatized undulator radiation combined with a hemispherical electron spectrometer. The broad peak with high intensity in a total ion yield spectrum, coming mainly from excitation of a 1 s electron into the 6 t 2 vacant orbital, induces a spectator Auger decay in which the excited electron remains in its excited orbital. The component on the higher energy side of this peak through 1 s excitation into a Rydberg orbital produces resonant Auger decays in which the excited Rydberg electron moves into a slightly higher Rydberg orbital, or is partly shaken up to a significantly higher Rydberg orbital. These findings of Si(CH 3 ) 4 indicate a clear contrast to those for SiF 4 , in which the 1 s excitation into a Rydberg orbital induces a shake-down phenomenon as well as a shake-up one. The results of these molecules exhibit a clear splitting effect among excited orbitals which are smeared out by overlapping due to lifetime widths and due to densely populated levels in the 1 s electron excitation spectrum. This is consistent with the calculation on photoexcitation within the framework of density functional theory.
  • Idioma: Inglês

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