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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
SJR: 0.19 SNIP: 0.341 CiteScore™: 0.43

ISSN Druckformat: 1093-3611
ISSN Online: 1940-4360

High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

DOI: 10.1615/HighTempMatProc.v13.i2.100
pages 217-228

A SIMPLE SPECTROSCOPIC METHOD FOR DETERMINING THE TEMPERATURE IN H2O-AR THERMAL PLASMA JET

V. Sember
Institute of Plasma Physics, AS CR, Za Slovankou 3, P.O. Box 17, 182 21 Prague, Czech Republic
A. Maslani
Institute of Plasma Physics AS CR, Za Slovankou 3 182 00 Prague 8

ABSTRAKT

A simple spectroscopic method has been developed for characterizing atmospheric high temperature plasma jets in gas mixtures containing hydrogen. It is based on the measurement of one spatially resolved spectrum comprising hydrogen Hβ line and ionic lines of other plasma species, and the assumption of local thermodynamic equilibrium. A few characteristic spectral quantities from the measured spectra are used to determine both the temperature and the composition simultaneously. The applicability of the method is illustrated for the case of H2O-Ar DC arcjet in a wide range of plasma temperature and mole fractions of plasma species. It is shown that at least in the jet core the assumption of partial LTE appears to be valid. The method is suitable for ready monitoring of industrial plasmas.

REFERENZEN

  1. Yan JD, Pau CF, Wylie SR, and Fang MTC, Experimental characterization of an atmospheric argon plasma jet generated by an 896 MHz microwave system.

  2. Lebehot A and Campargue R., Properties of an argon plasma free jet generated from a continuous optical discharge.

  3. Sember V., Spectroscopic study of a thermal plasma jet generated by a hybrid water-argon stabilized DC arc torch.

  4. Hrabovsky M, Kopecky V, Sember V, Kavka T, Chumak O, and Konrad M, IEEE.

  5. Laux CO, Spence TG, Kruger CH,and Zare RN, Optical diagnostics of atmospheric pressure air plasmas.

  6. Gigosos MA and Cardeñoso V, New plasma diagnosis tables of hydrogen Stark broadening including ion dynamics.

  7. Krenek P., Thermophysical Properties of H2O-Ar Plasmas at Temperatures 400-50,000 K and Pressure 0.1 MPa.

  8. Vidal CR, Cooper J, and Smith EW, Hydrogen Stark-broadening tables.


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