Physics – Plasma Physics
Scientific paper
2011-04-17
Torben Hemke et al 2011 J. Phys. D: Appl. Phys. 44 285206
Physics
Plasma Physics
Scientific paper
10.1088/0022-3727/44/28/285206
Radio frequency driven plasma jets are frequently employed as efficient plasma sources for surface modification and other processes at atmospheric pressure. The radio-frequency driven micro atmospheric pressure plasma jet ($\mu$APPJ) is a particular variant of that concept whose geometry allows direct optical access. In this work, the characteristics of the $\mu$APPJ operated with a helium-oxygen mixture and its interaction with a helium environment are studied by numerical simulation. The density and temperature of the electrons, as well as the concentration of all reactive species are studied both in the jet itself and in its effluent. It is found that the effluent is essentially free of charge carriers but contains a substantial amount of activated oxygen (O, O$_3$ and O$_2(^1\Delta)$). The simulation results are verified by comparison with experimental data.
Brinkmann Ralf Peter
Gebhardt Markus
Hemke Torben
Mussenbrock Thomas
Wollny Alexander
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