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Title:Collision-dependent line areas in the a1∆g← X3Σ−g band of molecular oxygen
Author(s):Fleisher, Adam J.
Contributor(s):Hodges, Joseph; Sironneau, Vincent
Subject(s):Atmospheric science
Abstract:We report precise line areas for individual rotationally resolved transitions within the $a^1Delta_gleftarrow$ $X^3Sigma^-_g$ electronic band of molecular oxygen recorded as a function of pressure for both neat samples of chem{O_2} as well as samples of chem{O_2} dilute with a variety of collisional partners. Using optical frequency comb referenced frequency-stabilized cavity ring-down spectroscopy (FS-CRDS) near 1.27 $mu$m we measure line areas with a quality-of-fit QF $leq$ 50,000 using a partially correlated quadratic-speed-dependent Nelkin-Ghatak profile. This spectrometer has achieved this high QF by both suppressing coupled cavity effects and by preserving a high-fidelity frequency axis with absolute frequency accuracy approaching 1 part in 10$^9$. With this instrument we are also currently exploring collision-induced absorption (CIA) and perturbative line mixing effects in chem{O_2} over the entire 7800-7940 wn spectral range.
Issue Date:25-Jun-15
Publisher:International Symposium on Molecular Spectroscopy
Citation Info:ACS
Genre:CONFERENCE PAPER/PRESENTATION
Type:Text
Language:English
URI:http://hdl.handle.net/2142/79387
Date Available in IDEALS:2016-01-05


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