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Title:HIGH-TEMPERATURE METHANE ABSORPTION WITH A DUAL FREQUENCY COMB SPECTROMETER
Author(s):Malarich, Nathan A
Contributor(s):Rieker, Gregory B; Drouin, Brian ; Sung, Keeyoon ; Coburn, Sean ; Yun, David
Subject(s):Small molecules
Abstract:Quantitative measurements of combustion system fueling and hot-Jupiter exoplanets require accurate methane absorption data at elevated temperatures. The ExoMol and HITRAN spectral databases in the near-infrared 6500-9000cm-1 range are based on the 10to10 potential energy surface, and the 80K and 296K empirical WKLMC linelist, respectively, which do not empirically constrain all elevated-temperature behavior. We present spectra of the near-infrared methane overtone band around 1400nm at temperatures from 296 K to 900 K. The spectra are taken using a three-zone tube furnace and a dual-frequency comb spectrometer with 600 cm-1 bandwidth and .00667cm-1 resolution. These measurements are targeted toward providing a compact, accurate methane absorption linelist for 300-900K.
Issue Date:2019-06-18
Publisher:International Symposium on Molecular Spectroscopy
Genre:Conference Paper / Presentation
Type:Text
Language:English
URI:http://hdl.handle.net/2142/104483
DOI:10.15278/isms.2019.TI09
Rights Information:Copyright 2019 Nathan A Malarich
Date Available in IDEALS:2019-07-15
2020-01-25


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