The ring-shaped spatial distribution of the argon excimer, Ar 2 ∗ , in the effluent of the kINPen-sci

Spatially resolved measurements of the argon excimer, , were performed in the effluent of a cold atmospheric plasma jet (CAPJ), the so called kINPen-sci, using cavity ringdown spectroscopy. The spatial distribution of the density of could be distinguished into two distinct populations: a Gaussian an...

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Bibliographic Details
Published in:Scientific reports 2024-09, Vol.14 (1), p.21859
Main Authors: Nave, Andy S C, Mattern, Philipp, van Helden, Jean-Pierre H
Format: Article
Language:English
Online Access:Get full text
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Summary:Spatially resolved measurements of the argon excimer, , were performed in the effluent of a cold atmospheric plasma jet (CAPJ), the so called kINPen-sci, using cavity ringdown spectroscopy. The spatial distribution of the density of could be distinguished into two distinct populations: a Gaussian and a toroidally shaped distribution. The production mechanisms of these populations seem to differ. On the one hand, a strong correlation was found between the Gaussian population and the spatial distribution of the filaments produced in the effluent of the kINPen-sci. On the other hand, measurements performed while varying the experimental conditions under which the kINPen-sci was operated indicate that the gas flow velocity must play a major role in the formation of the toroidal population. However, the mechanism of formation of the toroid population remains unclear.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-024-70966-7