Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5429036 | Journal of Quantitative Spectroscopy and Radiative Transfer | 2013 | 6 Pages |
H216O lines in the spectral range of 12,573-12,753Â cmâ1 have been recorded by cavity ring-down spectroscopy. Low-pressure water vapor (0.25Â Torr) was used to limit the pressure-induced line shift. The absolute line positions were calibrated with Rb atomic transitions and a thermo-stabilized Fabry-Pérot interferometer. Positions of 73 lines with intensities larger than 1Ã10â25cmâ1/(moleculecmsâ2) have been determined. For well-isolated lines, the absolute frequency accuracy is estimated to be 3Ã10â5cmâ1, which is also confirmed by the ground-state combination differences. Comparison between the line positions obtained in this work and those from HITRAN shows a systematic deviation of 0.001cmâ1.
⺠Cavity ring-down spectra of H2O lines in the 784-795 nm region were measured. ⺠Absolute positions of 73 water lines were determined with 3Eâ5 cmâ1 accuracy. ⺠HITRAN H2O line positions in this region have a systematic shift of 0.001 cmâ1.