2024/09/19 by A S C Nave, Philipp Mattern, J. H. van Helden · 1 voice
Chemistry · Engineering · Medicine · #Mass Spectrometry Techniques and Applications #Plasma Applications and Diagnostics #Plasma Diagnostics and Applications
paper · pdf · doi:10.1038/s41598-024-70966-7
openalex publication_date 2024/09/19 · openalex created_date 2024/09/20 · openalex updated_date 2026/07/23
Spatially resolved measurements of the argon excimer, \hbox Ar2* , 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 \hbox Ar2* 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 \hbox Ar2* 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 \hbox Ar2* population. However, the mechanism of formation of the toroid \hbox Ar2* population remains unclear.