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

Publicado 4 números por año

ISSN Imprimir: 1093-3611

ISSN En Línea: 1940-4360

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ROTATIONAL DISTRIBUTION OF OH MOLECULES IN SUPERSONIC THERMAL PLASMA JET

Volumen 13, Edición 2, 2009, pp. 205-215
DOI: 10.1615/HighTempMatProc.v13.i2.90
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A. Maslani
Institute of Plasma Physics AS CR, Za Slovankou 3 182 00 Prague 8
V. Sember
Institute of Plasma Physics, AS CR, Za Slovankou 3, P.O. Box 17, 182 21 Prague, Czech Republic

SINOPSIS

Supersonic thermal plasma jet generated by DC plasma torch is studied by means of optical emission spectroscopy. Spectra of OH molecules are used to determine rotational temperature in different axial and radial positions of the jet. Comparison with excitation and ionization temperatures calculated from argon spectral lines is included. In the hot part of the jet rotational temperature reflects kinetic temperature, while in the outer parts of the jet non-thermal effects play significant role in populating excited states of OH molecule.

PALABRAS CLAVE: thermal plasma, supersonic flow, optical emission spectroscopy, OH molecule, rotational temperature
REFERENCIAS

  1. Hrabovsky M, V Kopecky, V Sember, T Kavka, Chumak O, and Konrad M., Properties of Hybrid Water/Gas Arc Plasma Torch.

  2. Sember V and Maslani A., Measurement of Excitation and Ionisation Temperatures in an expanding H2O-Ar DC Arcjet.

  3. Pellerin S, Cormier JM, Richard F, Musiol K, and Chapelle J., A Spectroscopic Diagnostic Method Using UV OH Band Spectrum.

  4. Rajabian M, Gravelle DV, and Vacquie S., Measurements of Temperatures and Electron Number Densities in an Argon-Nitrogen Plasma Jet Generated by a dc Torch-Operation Close to Supersonic Threshold.

  5. Fantz U., Emission Spectroscopy of Molecular Low Pressure Plasmas.

  6. Gigosos MA and Cardenoso V., New Plasma Diagnosis Tables of Hydrogen Stark Broadening Including Ion Dynamics.

  7. Laux CO , Spence TG, Kruger CH, and Zare RN, Optical Diagnostics of Atmospheric Pressure Air Plasmas.

  8. Luque J and Crosley DR, LIFBASE: Database and spectral simulation.

  9. Selezneva SE, Rajabian M, Gravelle DV, and Boulos MI, Study of the structure and deviation from equilibrium in direct current supersonic plasma jets.

  10. Peters J, Heberlein J, and Lindsay J, Spectroscopic diagnostics in a highly constricted oxygen arc.

CITADO POR

  1. Verreycken T, van Gessel A F H, Pageau A, Bruggeman P, Validation of gas temperature measurements by OES in an atmospheric air glow discharge with water electrode using Rayleigh scattering, Plasma Sources Science and Technology, 20, 2, 2011. Crossref

  2. Mašláni Alan, Sember Viktor, Emission Spectroscopy of OH Radical in Water-Argon Arc Plasma Jet, Journal of Spectroscopy, 2014, 2014. Crossref

  3. Mašláni Alan, Sember Viktor, Hrabovský Milan, Spectroscopic determination of temperatures in plasmas generated by arc torches, Spectrochimica Acta Part B: Atomic Spectroscopy, 133, 2017. Crossref

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