|کد مقاله||کد نشریه||سال انتشار||مقاله انگلیسی||ترجمه فارسی||نسخه تمام متن|
|5426932||1397239||2018||5 صفحه PDF||ندارد||دانلود رایگان|
â¢Several water lines near 790â¯nm, in the 013-000 band of H216O are recorded with comb-locked cavity ring-down saturation spectroscopy.â¢Line positions are determined with an uncertainty of 25â¯kHz (relatively 6.6â¯Ãâ¯10â11), over one order of magnitude more accurate in a previous study.â¢Upper energies of these transitions are determined with an accuracy of 10â6Â cmâ1, indicating that the IUPAC-reported energies are inaccurate within 0.001Â cmâ1.
Water lines in the infrared are convenient frequency references. We present absolute positions of several H216O ro-vibrational transitions around 790â¯nm using comb-locked cavity ring-down saturation spectroscopy. Lamb dips of 6 water lines with saturation power in the range of 70â130â¯kW/cm2 were observed and the line positions were determined with an accuracy of 25â¯kHz, corresponding to a fractional uncertainty of 6.6â¯Ãâ¯10â11. The present work demonstrates the capability to considerably improve the accuracy of the water line positions in the infrared.
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Journal: Journal of Quantitative Spectroscopy and Radiative Transfer - Volume 205, January 2018, Pages 91-95