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Microwave plasma source operating with atmospheric pressure air-water mixtures
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10.1063/1.4762015
/content/aip/journal/jap/112/9/10.1063/1.4762015
http://aip.metastore.ingenta.com/content/aip/journal/jap/112/9/10.1063/1.4762015
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Experimental setup and (b) photograph of the plasma.

Image of FIG. 2.
FIG. 2.

Axial variation of the wave attenuation coefficient: measurements—dots; calculations—solid line.

Image of FIG. 3.
FIG. 3.

Axial profiles of charged species densities.

Image of FIG. 4.
FIG. 4.

Axial profile of the gas and wall (Tw ) temperatures, for Q = 1000 sccm and 2% water percentage: solid lines—calculated radially averaged gas temperature for P = 400 W (upper curve) and P = 300 W (lower curve); dashed line—calculated gas temperature at the axis for P = 400 W; data point—experimental gas temperature at the axis for P = 400 W.

Image of FIG. 5.
FIG. 5.

Emission spectrum of the band.

Image of FIG. 6.
FIG. 6.

Axial variation of the NO relative concentration for different values of microwave power and constant values of total gas flux Q = 1000 sccm and percentage of water (1%). The discharge end is marked with Ldis.

Image of FIG. 7.
FIG. 7.

NO relative concentration in the late afterglow vs. microwave power. Solid line—model; data points—experimental results from mass analysis.

Image of FIG. 8.
FIG. 8.

NO relative concentration in the late afterglow vs. water percentage in the total gas flow. Solid line—model; data points—experiment.

Image of FIG. 9.
FIG. 9.

FT-IR spectra of the NO fundamental band for different percentages of water in the total gas flow, P = 400 W and Q = 500 sccm.

Image of FIG. 10.
FIG. 10.

Comparison between a simulation using the SPARTAN code and experimental data for the R-branch of the fundamental NO(X2Π,v = 0 → X2Π, v = 1) transition.

Image of FIG. 11.
FIG. 11.

Axial variation of singlet NO2relative concentration for different values of microwave power and constant values of total gas flux Q = 1000 sccm and water percentage (1%). The discharge end is marked with Ldis.

Image of FIG. 12.
FIG. 12.

NO2 relative concentration in the late afterglow vs. water percentage. Solid line—model; data points—experiment. Experimental data are normalized to the calculated value for 5% water percentage.

Image of FIG. 13.
FIG. 13.

Axial variation of nitrous HNO2 acid relative density for different values of water percentage and constant values of total gas flux Q = 1000 sccm and microwave power P = 300 W. The discharge end is marked with Ldis.

Image of FIG. 14.
FIG. 14.

FT-IR spectra of HNO2 vibrational band for different percentages of water in the total gas flow, P = 400 W and Q = 500 sccm.

Image of FIG. 15.
FIG. 15.

Axial variation of the O2(a1Δg) relative concentration for different values of microwave power and constant values of total gas flux Q = 1000 sccm and water percentage (10%). The discharge end is marked with Ldis.

Image of FIG. 16.
FIG. 16.

Axial variation of the O(3P) relative concentration for different values of microwave power and constant values of total gas flux Q = 1000 sccm and water percentage (1%) in the total gas flow. The discharge end is marked with Ldis.

Image of FIG. 17.
FIG. 17.

(a) Fine structure 777 nm line profiles [transition O(3p5P →3s5S)] for two values of microwave power; (b) Variation of the integral intensity of the 777 nm line vs. power, for two values of water percentage.

Image of FIG. 18.
FIG. 18.

Detected spectra of NO(γ) radiation for different water percentages.

Image of FIG. 19.
FIG. 19.

Calculated axial variation of NO(γ) radiation.

Image of FIG. 20.
FIG. 20.

NO(γ) radiation vs. microwave power.

Image of FIG. 21.
FIG. 21.

Axial profile of water fragmentation species densities for constant power P = 300 W and two different percentages of water (1% and 10%). The end of the discharge zone is marked with the vertical dashed line.

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/content/aip/journal/jap/112/9/10.1063/1.4762015
2012-11-01
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Microwave plasma source operating with atmospheric pressure air-water mixtures
http://aip.metastore.ingenta.com/content/aip/journal/jap/112/9/10.1063/1.4762015
10.1063/1.4762015
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