The lowest-energy spectator Auger band of the CH3F molecule observed via F and C 1s → σ* excitation

K. Ueda, X. J. Liu, G. Prümper, E. Kukk, H. Yoshida, D. Sasaki, M. Kitajima, T. Tanaka, C. Makochekanwa, M. Hoshino, H. Tanaka

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1 Citation (Scopus)


Resonant photoemission from the fluoromethane (CH3F) molecule has been measured with photon energies scanning through the resonance in which a C or F 1s electron is promoted to the lowest unoccupied molecular orbital σCF*. The spectator Auger band with the lowest binding energy of ∼27 eV is tentatively assigned to 2e-26a1. The energy-resolved electron-ion coincidence experiments revealed that this state produces predominantly CH2+ ions both for C 1s and F 1s excitations, providing evidence that the spectator Auger decay to this state takes place within the molecular regime, where the valence electrons are delocalized over the entire molecule.

Original languageEnglish
Pages (from-to)263-266
Number of pages4
JournalChemical Physics Letters
Issue number4-6
Publication statusPublished - 2005 Sep 26

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry


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