Vibrationally resolved photoionization of the O K-shell of CO molecule

S. K. Semenov, N. A. Cherepkov, A. De Fanis, Y. Tamenori, M. Kitajima, H. Tanaka, K. Ueda

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


Simultaneous theoretical and experimental study of the angular asymmetry parameter β for the O K-shell of CO molecule has been performed. Transitions from the ground vibrational level of the neutral molecule to the vibrational states of the ion with v′=0,1,2, were studied in the region of the σ* shape resonance. Calculations in the relaxed core Hartree-Fock approximation with a fractional charge are in a qualitative agreement with the experiment. The theory demonstrates that the dipole amplitudes with different orbital angular momentum l have different behavior with increasing v′ which explains the observed variation of β.

Original languageEnglish
Pages (from-to)211-214
Number of pages4
JournalJournal of Electron Spectroscopy and Related Phenomena
Publication statusPublished - 2005 Jun


  • Angular asymmetry parameter
  • Photoionization
  • Relaxed core Hartree-Fock approximation

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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