Line positions and intensities for the ν2 + 3 ν3 band of 16O 3 around 2.7 μm

Abstract

The absorption spectrum of ozone has been recorded between 3600 and 3900 cm −1 at 0.01 cm −1 resolution with a Fourier transform spectrometer. The analysis of the spectra has allowed the first high-resolution study of the ν 2 + 3 ν 3 band of the 16O 3 molecule. The experimental rotational energy levels of the (013) vibrational state have been measured up to J = 40 and K a = 13 allowing an accurate set of rotational constants to be determined with a Hamiltonian taking into account the Coriolis resonances with the unobserved (112) vibrational state. Moreover, 71 line intensities measured with a relative uncertainty of about 8% were least-squares fitted leading to the determination of the main ν 2 + 3 ν 3 transition moment constants. Finally, a complete list of line positions, intensities, and lower state energies was generated for the ν 2 + 3 ν 3 and ν 1 + ν 2 + 2 ν 3 bands of 16O 3.