Ion yield spectroscopy of sodium following K-shell photoexcitation

H. Yamaoka, T. Koizumi, M. Oura, Y. Tamenori, A. Terai, K. Takahiro, K. Kawatsura, T. Mukoyama

Research output: Contribution to journalArticle

3 Citations (Scopus)


Photoion yields of sodium have been measured following K-shell excitation by time-of-flight (TOF) technique with a high-resolution incident photon energy. For comparison, we also measured single- and double-excitation spectra for Ne in the K-shell excitation region. The incident energy dependence of Na ion TOF spectra shows that in the 1s single-excitation (1s-1np) region below the K-edge (1079 eV), the Na2+ yield is dominant and the fraction of Na+ is much smaller. This is very different when compared with the results of neon single-excitation. Above the K-edge, Na2+ yield decreases and Na3+ yield increases.

Original languageEnglish
Pages (from-to)75-78
Number of pages4
JournalJournal of Electron Spectroscopy and Related Phenomena
Publication statusPublished - Jun 1 2005


  • Auger decay
  • Cascade process
  • K-shell ionization
  • Neon
  • Photoion yields
  • Sodium
  • Time-of-flight

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Radiation
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Spectroscopy
  • Physical and Theoretical Chemistry

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