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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
SJR: 0.137 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.v10.i2.70
pages 239-252

ACQUISITION AND MODELING OF A SPECTRUM IN A NON THERMAL EQUILIBRIUM PLASMA FORMED IN AIR WITH WATER

P. Andre
Laboratoire Arc Electrique et Plasmas Thermiques CNRS FRE 3120, Phys. Bât. 5 - Université Blaise Pascal, Aubière Cedex, France; and P.R.E.S. Clermont Université, Clermont-Ferrand Cedex 1, France
Yu. Barinov
A.F. Ioffe Physical-Technical Institute, Russian Academy of Sciences, Polytechnicheskaya 26, St Petersburg, 194021, Russia
G. Faure
LAEPT, Blaise Pascal University, UMR 6069 CNRS, bat. Physique 5, 24 avenue des Landais 63177 Aubiere Cedex, France
V. Kaplan
A.F. Ioffe Physical-Technical Institute, Russian Academy of Sciences, Polytechnicheskaya 26, St Petersburg, 194021, Russia
S. Shkol'nik
A.F. Ioffe Physical-Technical Institute, Russian Academy of Sciences, Polytechnicheskaya 26, St Petersburg, 194021, Russia

ABSTRAKT

Spectra in the range of 365−385 nm, corresponding to the Schumann-Runge system of O2 (B3Σu− X3Σg) and to the second positive system of N2 (C3Πu− B3Πg) are measured by optical emission spectroscopy in a discharge with liquid non-metallic electrodes (DLNME) in air with water at atmospheric pressure. They are simulated theoretically. This discharge generates a non-equilibrium plasma. In this paper, we first describe the experimental set up. Then, we explain the method of spectra simulation. By comparison of measured and simulated spectra, we determine the rotational and vibrational temperature and the ratio between densities of two upper electronic quantum levels of the two considered systems. The possible mechanism of spectra formation is discussed.


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