Premium
Optical Diagnostics of Micro Discharge Jets
Author(s) -
Schulzvon der Gathen V.,
Buck V.,
Gans T.,
Knake N.,
Niemi K.,
Reuter St.,
Schaper L.,
Winter J.
Publication year - 2007
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/ctpp.200710066
Subject(s) - millimeter , plasma , materials science , excitation , plasma diagnostics , jet (fluid) , streamer discharge , spectroscopy , range (aeronautics) , atomic physics , optics , mechanics , physics , composite material , quantum mechanics
Micro plasmas operated at ambient pressure with dimensions of the confining geometry in the order of a few ten micrometers to a millimeter are actually in the focus of interest due to the broad regime of applicability they offer and due to a similarly broad range of open physical questions. Here we present optical measurements within the discharge core and the effluent region of an especially developed micro discharge jet. To get an understanding of the complex system of this discharge it is important to analyse transport phenomena of energy and particles within both parts of the discharge by various highly sophisticated diagnostics. As a consequence of the limited access and the dimensions of the micro discharge most of these diagnostics are optical. Here we present diagnostics applied to determine spatially resolved absolute atomic oxygen densities as the most reactive constituent of the effluent, density maps of ozone as final reaction product of the gas chemical chain induced by the discharge and phase resolved optical emission spectroscopy yielding insight into the excitation dynamics of the discharge. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)