Dissociative excitation of SO2 by controlled electron impact

K. Becker, W. van Wijngaarden, J. W. McConkey

Research output: Contribution to journalArticlepeer-review


The fragmentation of SO2 following dissociative electron impact excitation has been studied under single collision conditions for incident electron energies up to 500 eV. The emission spectrum in the far v.u.v. spectral range (450-1100Å) shows many features arising from excited neutral oxygen and ionized oxygen and sulphur fragments. Absolute emission cross sections have been measured for the most intense lines and the maximum values were found to range from 1-12 × 10-19 cm2 with an uncertainty of approx. ± 35%. Dissociation mechanisms are discussed and in some cases the dissociation path could be uniquely identified. The striking differences between the v.u.v. emission spectrum produced by single step dissociation of SO2 and the spectra emitted by the plasma torus around Jupiter are discussed.

Original languageEnglish (US)
Pages (from-to)197-206
Number of pages10
JournalPlanetary and Space Science
Issue number2
StatePublished - Feb 1983

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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