Spatially resolved measurement of hydroxyl (OH) radical concentration in a microwave plasma jet by planar laser-induced fluorescence

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Authors

VORÁČ Jan DVOŘÁK Pavel HNILICA Jaroslav KUDRLE Vít

Year of publication 2014
Type Article in Periodical
Magazine / Source Open chemistry
MU Faculty or unit

Faculty of Science

Citation
Web http://www.degruyter.com/view/j/chem.2015.13.issue-1/chem-2015-0021/chem-2015-0021.xml
Doi http://dx.doi.org/10.1515/chem-2015-0021
Field Plasma physics
Keywords modulated microwave power; spectroscopy; surfatron; LIF; OH
Attached files
Description The spatially resolved concentration of OH radicals in the effluent of a microwave (MW) surfatron plasma jet was measured by planar laser-induced fluorescence. Two cases were compared – constant MW power and MW power modulated by 80 Hz. In both cases the maximal concentration was at the tip of the visible discharge, but for constant MW power the OH was spread over a larger volume. The maximum concentration in both cases was on the order of 10^{22} m^{-3}.
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