The fragmentation of CH4+ ions from photoionization between 12 and 40 eV

Thomas A. Field, John H D Eland*

*Corresponding author for this work

Research output: Contribution to journalArticle

19 Citations (Scopus)


The fragmentation of the methane ion has been measured as a function of ion internal energy in the range 12-40 eV using the fixed wavelength photoelectron photoion coincidence (PEPICO) technique, with He Iα and He IIα light. We confirm that the fragmentation of methane ions in the A state is not well represented by statistical calculations. In the satellite states between the A state and 33 eV, the ion breaks into small fragments; in satellite states above 33 eV the fragmentation is related to the behaviour of doubly-charged methane.

Original languageEnglish
Pages (from-to)209-216
Number of pages8
JournalJournal of Electron Spectroscopy and Related Phenomena
Issue number2
Publication statusPublished - 03 Jul 1995
Externally publishedYes


  • CH ion
  • Coincidence method
  • Fragmentation
  • Photoionization

ASJC Scopus subject areas

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

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