The ν1 + 3 ν2 + 3 ν3 and 4 ν1 + ν2 + ν3 bands of ozone by CW-cavity ring down spectroscopy between 5900 and 5960 cm −1

Abstract

The absorption spectrum of ozone, 16O 3, has been recorded in the 5903–5960 cm −1 region by high sensitivity CW-cavity ring down spectroscopy ( α min ∼ 5 × 10 −10 cm −1). The ν 1 + 3 ν 2 + 3 ν 3 and 4 ν 1 + ν 2 + ν 3 A-type bands centred at 5919.15 and 5947.07 cm −1 were newly observed. A set of 173 and 168 energy levels could be experimentally determined for the (1 3 3) and (4 1 1) states, respectively. Except for a few K a = 5 levels of the (4 1 1) state, the rotational structure of the two states was found mostly unperturbed. The spectroscopic parameters were determined from a fit of the corresponding line positions by considering the (1 3 3) and (4 1 1) states as isolated. The determined effective Hamiltonian and transition moment operators were used to generate a list of 785 transitions given as Supplementary Material.