Methylidyne Cavity Ring-Down Spectroscopy in a Microwave Plasma Discharge

László Nemes; Christian Parigger

doi:10.20944/preprints202211.0239.v2

Preprint Brief Report Version 2 Preserved in Portico This version is not peer-reviewed

Version 1 : Received: 8 November 2022 / Approved: 14 November 2022 / Online: 14 November 2022 (06:14:12 CET)
Version 2 : Received: 17 December 2022 / Approved: 19 December 2022 / Online: 19 December 2022 (02:45:09 CET)

This work communicates cavity ring-down spectroscopy (CRDS) of methylidyne (CH) in a chemiluminescent plasma that is produced in a microwave cavity. Of interest are the rotational lines of the 0-0 vibrational transition for the A-X band and the 1-0 vibrational transition for the B-X band. The reported investigations originate from CH-radical research in 1996 that constituted the first case of applying CRDS to the CH radical. The report also includes recent analysis that shows excellent agreement of measured and computed data, and it communicates CH line strength data.

molecular spectroscopy; diatomic molecules; cavity ring-down spectroscopy; absorption spectroscopy; methylidyne; line strength data; plasma physics; astrophysics

Physical Sciences, Atomic and Molecular Physics

Comment 1

Received: 19 December 2022
Commenter: Christian Parigger
Commenter's Conflict of Interests: Author

Comment: Version 2 shows edited figures, text edits, and additional references.

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Methylidyne Cavity Ring-Down Spectroscopy in a Microwave Plasma Discharge

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