Infrared high-resolution spectra of ozone in the range 5500-: analysis of and bands

Abstract

The and bands of ozone, which occur in the region, have been observed for the first time using a Fourier transform spectrometer, operating at resolution and with a large pathlength pressure product . The assignment of rotation-vibration transitions has been done for J up to 35 and Ka up to 12, for the band and up to J = 40 and Ka = 2 for the band respectively. The effective Hamiltonian used in calculations accounts for the first-order Coriolis coupling between these two bands. In addition, as the levels corresponding to Ka = 5 are perturbed, it was necessary to account for anharmonic resonance with the (321) state. Also, to correctly reproduce the levels of (015) with Ka = 8,9,10 it has been necessary to include a Coriolis coupling with (080) state in the model. In this way, we have obtained a very satisfactory r.m.s. deviation of , near the experimental accuracy. Rovibrational line intensities of and bands were measured and the value of the principal transition moment constants have been recovered. Finally a complete list of line positions and intensities was calculated leading to the integrated band intensity of /molecule for the band and /molecule for the band at 296 K with a cut-off of .