Knowledge Bank

The high resolution CW-CRDS infrared spectra of ozone have been recorded in the 5970-6200 cm$\mathrm{<mrow\; data-mjx-texclass="ORD">-1</mrow>}$ spectral range. The high sensitivity allow to observe very weak lines. In this region, only two A type bands centred at 6063 and 6124 cm$\mathrm{<mrow\; data-mjx-texclass="ORD">-1</mrow>}$ were previously analysed}, \underline{780}, 223 (2006)}. Here, thanks to the record of new spectra, we largely extend the range of their observed quantum numbers, and, first of all, we observe three B type bands: $2\nu 1+3\nu 2+2\nu 3$ (138 transitions), $5\nu 1+\nu 2$ (16 transitions), and $\nu 1+2\nu 2+4\nu 3$ (499 transitions). It is necessary to include 6 vibrational levels in the Hamiltonian model, accounting of many resonances to correctly (r.m.s=6x 10$\mathrm{<mrow\; data-mjx-texclass="ORD">-3</mrow>}$ cm$\mathrm{<mrow\; data-mjx-texclass="ORD">-1</mrow>}$ reproduce the observed positions. In addition, transition moment are fitted. Finally, more than 95% of all experimentally observed lines are assigned and are satisfactorily reproduced, accounting of the difficulty of analyses of levels not far from the dissociation.