{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,21]],"date-time":"2026-05-21T01:46:19Z","timestamp":1779327979760,"version":"3.51.4"},"reference-count":76,"publisher":"MDPI AG","issue":"23","license":[{"start":{"date-parts":[[2020,11,29]],"date-time":"2020-11-29T00:00:00Z","timestamp":1606608000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003246","name":"Nederlandse Organisatie voor Wetenschappelijk Onderzoek","doi-asserted-by":"publisher","award":["11830"],"award-info":[{"award-number":["11830"]}],"id":[{"id":"10.13039\/501100003246","id-type":"DOI","asserted-by":"publisher"}]},{"name":"EU H2020-ICT29","award":["732968"],"award-info":[{"award-number":["732968"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Conventional mechanical Fourier Transform Spectrometers (FTS) can simultaneously measure absorption and dispersion spectra of gas-phase samples. However, they usually need very long measurement times to achieve time-resolved spectra with a good spectral and temporal resolution. Here, we present a mid-infrared dual-comb-based FTS in an asymmetric configuration, providing broadband absorption and dispersion spectra with a spectral resolution of 5 GHz (0.18 nm at a wavelength of 3333 nm), a temporal resolution of 20 \u03bcs, a total wavelength coverage over 300 cm\u22121 and a total measurement time of ~70 s. We used the dual-comb spectrometer to monitor the reaction dynamics of methane and ethane in an electrical plasma discharge. We observed ethane\/methane formation as a recombination reaction of hydrocarbon radicals in the discharge in various static and dynamic conditions. The results demonstrate a new analytical approach for measuring fast molecular absorption and dispersion changes and monitoring the fast dynamics of chemical reactions over a broad wavelength range, which can be interesting for chemical kinetic research, particularly for the combustion and plasma analysis community.<\/jats:p>","DOI":"10.3390\/s20236831","type":"journal-article","created":{"date-parts":[[2020,11,29]],"date-time":"2020-11-29T21:00:57Z","timestamp":1606683657000},"page":"6831","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":17,"title":["Broadband Time-Resolved Absorption and Dispersion Spectroscopy of Methane and Ethane in a Plasma Using a Mid-Infrared Dual-Comb Spectrometer"],"prefix":"10.3390","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9909-5278","authenticated-orcid":false,"given":"Muhammad Ali","family":"Abbas","sequence":"first","affiliation":[{"name":"Trace Gas Research Group, Department of Molecular and Laser Physics, Institute of Molecules and Materials, Radboud University, 6525 AJ Nijmegen, The Netherlands"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Luuk van","family":"Dijk","sequence":"additional","affiliation":[{"name":"Trace Gas Research Group, Department of Molecular and Laser Physics, Institute of Molecules and Materials, Radboud University, 6525 AJ Nijmegen, The Netherlands"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4455-098X","authenticated-orcid":false,"given":"Khalil Eslami","family":"Jahromi","sequence":"additional","affiliation":[{"name":"Trace Gas Research Group, Department of Molecular and Laser Physics, Institute of Molecules and Materials, Radboud University, 6525 AJ Nijmegen, The Netherlands"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mohammadreza","family":"Nematollahi","sequence":"additional","affiliation":[{"name":"Trace Gas Research Group, Department of Molecular and Laser Physics, Institute of Molecules and Materials, Radboud University, 6525 AJ Nijmegen, The Netherlands"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6192-3322","authenticated-orcid":false,"given":"Frans J. M.","family":"Harren","sequence":"additional","affiliation":[{"name":"Trace Gas Research Group, Department of Molecular and Laser Physics, Institute of Molecules and Materials, Radboud University, 6525 AJ Nijmegen, The Netherlands"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Amir","family":"Khodabakhsh","sequence":"additional","affiliation":[{"name":"Trace Gas Research Group, Department of Molecular and Laser Physics, Institute of Molecules and Materials, Radboud University, 6525 AJ Nijmegen, The Netherlands"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2020,11,29]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"16098","DOI":"10.1016\/j.ijhydene.2013.09.136","article-title":"Influence of N2 concentration in a CH4\/N2 dielectric barrier discharge used for CH4 conversion into H2","volume":"38","author":"Snoeckx","year":"2013","journal-title":"Int. J. Hydrog. 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