Analysis of high resolution measurements of the 2ν1 + 3ν3 band of ozone: Coriolis interaction with the ν1 + 3ν2 + 2ν3 band.

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Ozone: Laboratory Spectra, Ozone: Infrared Spectra

Scientific paper

The 2ν1 + 3ν3 band of ozone, which occurs in the 5080 cm-1 region, has been observed for the first time using a Fourier transform spectrometer, operating at 0.008 cm-1 resolution and with a large pathlength × pressure product (3616 cm × 42.8 torr). Assignment of rotation-vibration transitions was done for J = 40 and Ka = 14. It was necessary to account for the Coriolis coupling between the levels of the (203) and (132) states to correctly reproduce the energy levels, particularly for states with Ka = 4. In this way the authors have obtained a very satisfactory r.m.s. error of 1.8 × 10-3cm-1, close to the experimental accuracy. In addition, line intensity of the 2ν1 + 3ν3 band were measured and calculated, and transition moment constants derived. Finally a complete list of line positions and intensities was calculated, leading to a total band intensity of Sv = 0.133×10-21 cm-1/mole cm-2 at 296 K.

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