C 1s and O 1s photoelectron spectra of formaldehyde with satellites: Theory and experiment

K. Kuramoto, M. Ehara, H. Nakatsuji, M. Kitajima, H. Tanaka, A. De Fanis, Y. Tamenori, K. Ueda

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)


Shake-up satellite spectra accompanying the C 1s and O 1s photoelectron main lines of formaldehyde were studied by the combination of high-resolution X-ray photoelectron spectroscopy and accurate ab initio calculations. The symmetry adapted cluster-configuration interaction (SAC-CI) general-R method finely reproduced the details of the experimental spectra and enabled quantitative assignments for the seven satellite bands: some were newly interpreted. The shake-up transitions were mainly attributed to the valence excitations accompanying the inner-shell ionization. The Rydberg excitations were found to be minor. Three-electron processes such as 1s-1n-2π*2 and 1s-1π-2π*2 were predicted in the low-energy region where the valence shake-up states such as 1s-1n-σ*, π-π* exist.

Original languageEnglish
Pages (from-to)253-259
Number of pages7
JournalJournal of Electron Spectroscopy and Related Phenomena
Issue number3 SPEC. ISS.
Publication statusPublished - 2005 Mar
Externally publishedYes


  • C 1s and O 1s photoelectron spectra
  • Formaldehyde
  • Shake-up satellite, SAC-CI

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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