New experimental evidence for the mechanism for production of isotopically heavy O3

Details New experimental evidence for the mechanism for production of isotopically heavy O3 New experimental evidence for the mechanism for production of isotopically heavy O3

Jul 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988georl..15..639t&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 15, July 1988, p. 639-642.

Physics

52

Isotopic Enrichment, Oxygen Isotopes, Ozone, Photolysis, Stratosphere, Molecular Rotation, Oxygen 18, Pressure Effects, Ultraviolet Radiation

Scientific paper

The mass independent isotopic fractionation in O3 formation from O2 photolysis has been determined for various experimental conditions. In the low-pressure regime, O3 decomposition was shown to occur, resulting in a secondary mass-dependent isotropic fractionation. The results suggest the involvement of rotational states in the mass independent fractionation process. For pressures in the intermediate range, a single-stage fractionation is noted. A decrease in the delta(O-18) of O3 to 87 percent occurs at 760 Torr. The fractionation process is shown to be independent of UV wavelength and third body composition.

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