Molecular emission in the electron-impact excitation of sulphur dioxide

C. A F Johnson, Stephen D. Kelly, John E. Parker

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


Electron-impact excitation of sulphur dioxide at energies greater than the threshold energy (3.85 ± 0.4 eV) results in optical emission mainly from the B~ 1B1 state of sulphur dioxide. Optical emission excitation functions have been determined at several wavelengths and demonstrate that the primary excitation process(es) is dominated by production of optically forbidden triplet states. The observed emission arises from intersystem crossing from these triplet states into the fluorescing B~ 1B1 state.

Original languageEnglish
Pages (from-to)411-416
Number of pages6
JournalJournal of the Chemical Society, Faraday Transactions 2: Molecular and Chemical Physics
Issue number2
Publication statusPublished - 1987


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