Continuous-wave cavity ringdown spectroscopy of the 8ν polyad of water in the 25 195-25 340 cm-1 range -: art. no. 154307

State-of-the-art experiments and calculations are used to record and assign the data obtained in the weakly absorbing blue energy region of the H(2)O spectrum. Continuous-wave cavity ringdown absorption spectroscopy with Doppler resolution is used to probe the range from 25 195 to 25 470 cm(-1) with an absorption sensitivity of similar to 1 parts per 10(9) (ppb)/cm. 62 lines of the polyad nu(OH)=8 are reported, of which 43 are assigned using variational nuclear calculations. The study includes absorption line intensities (in the range of 10(-28)-10(-26) cm/molecule) for all lines and self-broadening pressure coefficient for a few lines. The newly obtained energy levels are also reported. (c) 2005 American Institute of Physics.