Low-uncertainty H2O line intensities for the 930-nm region
Low-uncertainty H2O line intensities for the 930-nm region
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930 nm 区域的低不确定性 H2O 线强度
DOI：
10.1016/j.jms.2007.12.007
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发表时间：
2008
影响因子：
1.4
通讯作者：
J. Hodges
中科院分区：
文献类型：
--
作者：
D. Lisak;J. Hodges
我们使用稳频腔衰荡光谱测量了3ν polyad在10603cm−1 ~ 10852cm−1波数范围内的室温H2O光谱。研究了70多个转变，根据其相对强度（强和弱）分为两组。对于包含强过渡集的23条谱线，水蒸气样品在稳定流动的n2载气中作为稀释混合物制备，水蒸气样品数密度的测量与主要的湿度产生方法有关。对于这些强烈的转变，测量的线强度在以前测量的1%以内。在静态纯水蒸气样品上进行了较弱的水跃迁的线强度测量，这些结果比以前的测量结果系统地高出约20%。
We measured room-temperature H2O spectra of the 3ν polyad within the wave number range 10603cm−1to 10852cm−1using 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 N2carrier 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%.