THE $^{18}O_{3}$ ABSOPTION SPECTRUM $3.3 \mu m$.

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Ohio State University

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Spectra of ozone generated from a 99.98\% pure oxygen sample were recorded covering the $2800-3500 cm^{-1}$ at $0.010 cm^{-1}$ resolution with the McMath Fourier transform interferometer at the National Solar Observatory on Kitt Peak. The first extensive analysis of the 4 bands $3\nu_{3}, 2\nu_{3} +\nu_{1}, 2\nu_{1} +\nu_{3}$ and $3\nu_{1}$ absorbing in this spectral region has been performed leading to a precise set of rotational energy levels for the 4 vibrational interacting states ((003), (201), (102), (300)). These experimental levels were then reproduced with the aid of a Hamiltonian taking into account the various resonances (Coriolis, Darling-Dennison) affecting the levels. Moreover, using the equivalent width method, intensities of lines belonging to the four bands were measured with a relative uncertainty of about 10\% and used to determine the corresponding transition moment constants. Finally, from the vibrational energies, rotational and coupling constants as well as transition moment constants a complete and precise list of the line positions and intensities of the $3\nu_{3}, 2\nu_{3} + \nu_{1}, \nu_{3} + 2\nu_{1}$ and $3\nu_{1}$ bands of $^{16}O_{3}$ has been generated.


Author Institution: Laboratoire de Physique Mol\'eculaire et Atmosph\'erique, Tour 13. Universit\'e Pierre et Marie Curie et CNRS; Atmospheric Sciences Division, MS 401A, NASA Langley Research Center; Department of Physics, College of William and Mary; Groupe de Spectrom\'etrie Mol\'eculaire et Atmosph\'erique, Facult\'e des Sciences