THE 2.5-MU-M BANDS OF OZONE - LINE POSITIONS AND INTENSITIES

A study of high-resolution (0.010 cm-1) Fourier transform absorption spectra of 16O3 around 4020 cm-1 has been performed leading to the first extensive analysis of the ν1 + 3ν3 band of this molecule and the first observation of weaker lines from its 4ν3 and 3ν1 + ν2 bands. Then the rotational energy levels of the (103), (004), and (310) vibrational states of ozone have been satisfactorily reproduced using a Hamiltonian matrix which takes explicitly into account the ozone classical Coriolis interaction between (103) ↔ (004) together with the unusual Coriolis-type (103) ↔ (310) and Fermi-type (310) ↔ (004) interactions. In these conditions precise vibrational band centers and rotational and coupling constants were obtained. Also, about 130 line intensities were measured with an accuracy of about 3% and satisfactorily reproduced leading to the determination of the ν1 + 3ν3 and 3ν1 + ν2 vibrational transition moment constants. Finally, a complete list of line positions, intensities, and lower state energies was generated for the ν1 + 3ν3, 4ν3, and 3ν1 + ν2 bands of 16O3. © 1991.