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# ROTATIONAL ANALYSIS OF THE NEAR INFRARED SINGLET-TRIPLET ELECTRONIC SPECTRUM OF OZONE

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/19395

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 Title: ROTATIONAL ANALYSIS OF THE NEAR INFRARED SINGLET-TRIPLET ELECTRONIC SPECTRUM OF OZONE Creators: Bouvier, A. J.; Inard, D.; Churassy, S.; Bacis, R.; Brion, J.; Malicet, J.; Judge, R. H. Issue Date: 1999 Abstract: High Resolution Fourier Transform Infrared Spectrometry was used to study the rotational fine structure of the lowest energy singlet-triplet electronic spectrum of ozone, $^{16}O_{3}$ and $^{18}O_{3}$ near $9300 cm^{-1}$. With a near pure case (b) coupling model, approximately 100 lines were assigned in the spectrum of $^{16}O_{3}$. A combined least-squares/band contour analysis yielded an overall standard deviation of $0.045 cm^{-1}$. The fit to the ${^{18}}O_{3}$ spectrum used approximately 30 lines and gave a slightly higher overall standard deviation. The rotational analysis has established that the upper state is ${^{3}}A_{2}$ in agreement with recent theoretical calculations. Numerous perturbations are observed in the spectrum of both isotopomers and limited our least-squares fit to the three rotational constants, the symmetric top distortion constants, the three spin-rotation constants and the alpha spin-spin constant. The talk will feature an overview of the rotational analysis along with a brief discussion of the perturbations seen in the spectrum. URI: http://hdl.handle.net/1811/19395 Other Identifiers: 1999-RI-06