A simple spectroscopic method for determining the temperature in H2O-Ar thermal plasma jet

0328555 - ÚFP 2010 RIV US eng J - Journal Article
Sember, Viktor - Mašláni, Alan
A simple spectroscopic method for determining the temperature in H2O-Ar thermal plasma jet.
High Temperature Materials and Processes. Roč. 13, č. 2 (2009), s. 217-228. ISSN 1093-3611.
[European High Temperature Plasma Processes (HTPP)/10th./. Patras (Patras University), 07.07.2008-11.07.2008]
R&D Projects: GA ČR GA202/08/1084; GA MPO FT-TA4/050
Institutional research plan: CEZ:AV0Z20430508
Keywords : Thermal plasma jets * spectroscopic diagnostics * mole-fraction gradients
Subject RIV: BL - Plasma and Gas Discharge Physics
Impact factor: 0.333, year: 2009

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 H 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.
Permanent Link: http://hdl.handle.net/11104/0174846