Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5415814 | Journal of Molecular Spectroscopy | 2008 | 8 Pages |
Abstract
We measured room-temperature H2O spectra of the 3ν polyad within the wave number range 10 603 cmâ1 to 10 852 cmâ1 using frequency-stabilized cavity ring-down spectroscopy. More than 70 transitions, divisible into two groups based on their relative intensities (strong and weak) were investigated. For the 23 lines comprising the set of strong transitions, the water vapor sample was prepared as a dilute mixture in a steady flow of N2 carrier gas, and the measurement of the water vapor sample number density was linked to primary methods of humidity generation. For these strong transitions, the measured line intensities were within 1% of previous measurements. The line intensity measurements of the weaker H2O transitions, were made on samples of static pure water vapor, and these results were systematically greater than previous measurements by approximately 20%.
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Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Daniel Lisak, Joseph T. Hodges,