TY - JOUR
T1 - Spatially resolved ozone densities and gas temperatures in a time modulated RF driven atmospheric pressure plasma jet
T2 - An analysis of the production and destruction mechanisms
AU - Zhang, Shiqiang
AU - Van Gaens, Wouter
AU - Van Gessel, Bram
AU - Hofmann, Sven
AU - Van Veldhuizen, Eddie
AU - Bogaerts, Annemie
AU - Bruggeman, Peter
PY - 2013/5/22
Y1 - 2013/5/22
N2 - In this work, a time modulated RF driven DBD-like atmospheric pressure plasma jet in Ar + 2%O2, operating at a time averaged power of 6.5 W is investigated. Spatially resolved ozone densities and gas temperatures are obtained by UV absorption and Rayleigh scattering, respectively. Significant gas heating in the core of the plasma up to 700 K is found and at the position of this increased gas temperature a depletion of the ozone density is found. The production and destruction reactions of O3 in the jet effluent as a function of the distance from the nozzle are obtained from a zero-dimensional chemical kinetics model in plug flow mode which considers relevant air chemistry due to air entrainment in the jet fluent. A comparison of the measurements and the models show that the depletion of O3 in the core of the plasma is mainly caused by an enhanced destruction of O3 due to a large atomic oxygen density.
AB - In this work, a time modulated RF driven DBD-like atmospheric pressure plasma jet in Ar + 2%O2, operating at a time averaged power of 6.5 W is investigated. Spatially resolved ozone densities and gas temperatures are obtained by UV absorption and Rayleigh scattering, respectively. Significant gas heating in the core of the plasma up to 700 K is found and at the position of this increased gas temperature a depletion of the ozone density is found. The production and destruction reactions of O3 in the jet effluent as a function of the distance from the nozzle are obtained from a zero-dimensional chemical kinetics model in plug flow mode which considers relevant air chemistry due to air entrainment in the jet fluent. A comparison of the measurements and the models show that the depletion of O3 in the core of the plasma is mainly caused by an enhanced destruction of O3 due to a large atomic oxygen density.
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U2 - 10.1088/0022-3727/46/20/205202
DO - 10.1088/0022-3727/46/20/205202
M3 - Article
AN - SCOPUS:84878246250
SN - 0022-3727
VL - 46
JO - Journal of Physics D: Applied Physics
JF - Journal of Physics D: Applied Physics
IS - 20
M1 - 205202
ER -