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Effect of self absorption on emitted intensity of Na‐5890 å line in water gas combustion plasma
Author(s) -
Joshi N. K.,
Rohatgi V. K.
Publication year - 1983
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.4440070207
Subject(s) - plasma , materials science , absorption (acoustics) , combustion , intensity (physics) , monochromatic color , boundary layer , atomic physics , optics , mechanics , analytical chemistry (journal) , chemistry , physics , composite material , organic chemistry , quantum mechanics , chromatography
Numerical calculations have been carried out to explain the effect of self absorption on the nature of the emitted intensity of the Na‐5890 Å line of the sodium doublet in water gas combustion plasma. The self absorption is purely an effect caused by the presence of cold wall boundary layers in an MHD duct. The effect of seed concentration, core temperature, wall temperature, boundary layer thickness and profile parameter on line shapes has been studied. It has been found that seed percentage is the major factor influencing the line shape parameters and core temperature is the major factor affecting the maximum radiated monochromatic line intensity.