Laboratory studies of heavy ozone

J. Morton, J. Barnes, B. Schueler, K. Mauersberger

Research output: Contribution to journalArticlepeer-review

141 Scopus citations

Abstract

Dissociation of ozone in the Chappuis bands has been used as an O atom source to study isotope effects occurring in the O(3P) + O2(3Σg) recombination reaction. The ozone produced was found to be enriched in both of its heavy isotopes. The enrichment is approximately constant from 5 torr to 100 torr and decreases at higher pressures. It increases with temperature, with 50O3 showing a slightly faster rate of increase than 49O3. The results of this experiment have clearly isolated the source of the isotope effect to the gas phase O(3P) + O2(3Σg) recombination reaction. For comparison, we also present isotope ratios of ozone formed in an electric discharge. None of the results, however, have shown the large enhancement of 40% or more in mass 50 observed in some stratospheric measurements. -from Authors

Original languageEnglish (US)
Pages (from-to)901-907
Number of pages7
JournalJournal of Geophysical Research
Volume95
Issue numberD1
DOIs
StatePublished - 1990

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Materials Chemistry
  • Polymers and Plastics
  • Physical and Theoretical Chemistry

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