High-resolution spectroscopy of transient free radicals with a mid-infrared dual-comb spectrometer

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https://hdl.handle.net/2142/107515

Title: High-resolution spectroscopy of transient free radicals with a mid-infrared dual-comb spectrometer
Author(s): Luo, Pei-Ling
Issue Date: 2020-06-23
Keyword(s): Radicals
Date of Ingest: 2020-06-26T03:04:32Z
Abstract: We performed time-resolved dual-comb spectroscopy near 3400 \wn upon flash photolysis of flowing mixtures of \chem{(COCl)_2} or \chem{Cl_2}/\chem{CH_3OH}/\chem{O_2}/\chem{N_2}/\chem{NO}. The high-resolution transient absorption spectroscopy was demonstrated by utilizing an electro-optic dual-comb system\footnote{Ref: Phys. Chem. Chem. Phys. 21, 18400, (2019)} coupled with a Herriott flow cell. With this new approach, absorbance signals of several species in the flow reactor, such as \chem{HO_2}, \chem{CH_3OH}, \chem{H_2CO}, and \chem{OH} were able to be simultaneously monitored with adequate spectral and temporal resolutions. Based on great 3D spectral features, reaction kinetics of \chem{HO_2} with \chem{NO} were also studied.
Publisher: International Symposium on Molecular Spectroscopy
Type of Resource: Text
Genre of Resource: Conference Paper / Presentation
Language: eng
Permalink: http://hdl.handle.net/2142/107515