Dual-comb spectroscopy of ammonia formation in non-thermal plasmas
In: Communications Chemistry, Jg. 7 (2024), Heft 1, S. 1-10
Online
academicJournal
Zugriff:
Abstract Plasma-activated chemical transformations promise the efficient synthesis of salient chemical products. However, the reaction pathways that lead to desirable products are often unknown, and key quantum-state-resolved information regarding the involved molecular species is lacking. Here we use quantum cascade laser dual-comb spectroscopy (QCL-DCS) to probe plasma-activated NH3 generation with rotational and vibrational state resolution, quantifying state-specific number densities via broadband spectral analysis. The measurements reveal unique translational, rotational and vibrational temperatures for NH3 products, indicative of a highly reactive, non-thermal environment. Ultimately, we postulate on the energy transfer mechanisms that explain trends in temperatures and number densities observed for NH3 generated in low-pressure nitrogen-hydrogen (N2–H2) plasmas.
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Dual-comb spectroscopy of ammonia formation in non-thermal plasmas
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Autor/in / Beteiligte Person: | Sadiek, Ibrahim ; Fleisher, Adam J. ; Hayden, Jakob ; Huang, Xinyi ; Hugi, Andreas ; Engeln, Richard ; Lang, Norbert ; Jean-Pierre H. van Helden |
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Zeitschrift: | Communications Chemistry, Jg. 7 (2024), Heft 1, S. 1-10 |
Veröffentlichung: | Nature Portfolio, 2024 |
Medientyp: | academicJournal |
ISSN: | 2399-3669 (print) |
DOI: | 10.1038/s42004-024-01190-7 |
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