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

The absorption spectrum of ozone, O-16(3), has been recorded in the 5903-5960 cm(-1) region by high sensitivity CW-cavity ring down spectroscopy (alpha(min) similar to 5 x 10(-10) cm(-1)). The nu(1) + 3 nu(2) + 3 nu(3) and 4 nu(1)+ nu(2) + nu(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 (13 3) and (411) states, respectively. Except for a few K-a = 5 levels of the (411) 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 (13 3) and (411) states as isolated. The determined effective Hamiltonian and transition moment operators were used to generate a list of 785 transitions given as Supplementary Material. (C) 2007 Elsevier Inc. All rights reserved.