Unambiguous identification of ¹⁷O containing ozone isotopomers for symmetry selective detection

Abstract

Symmetry selective detection of the ¹⁷O containing ozone isotopomers ¹⁶O¹⁶O¹⁷O and ¹⁶O¹⁷O¹⁶O requires the unambiguous identification of absorption lines. We report high resolution tuneable diode laser spectrometer measurements of ¹⁷O containing ozone isotopomers in the R-branch of the ν₃ band and present a purely experimental technique that discriminates between ¹⁶O¹⁶O¹⁷O and ¹⁶O¹⁷O¹⁶O. Around 1040 cm⁻¹, differences in line positions of ¹⁶O¹⁷O¹⁶O upto 4 × 10⁻³ cm⁻¹ between our measurements and present spectroscopic database records (HITRAN 2004) are found.

Keywords:

• Absorption spectroscopy
• Diode laser
• Isotope anomaly
• Isotope effect
• Isotope fractionation
• Oxygen-16
• Oxygen-17
• Ozone formation