Spectroscopic temperature measurements of flames and their physical significance
- 1 June 1971
- report
- Published by Office of Scientific and Technical Information (OSTI)
Abstract
A critical examination of the theoretical basis of spectroscopic temperature measurements of non-isothermal non-homogeneous flames by the line reversal, emission-absorption, slope and two-line methods, when self-absorption effects are negligible has clearly shown that the results will depend on a) the measurement method employed; b) the energy of the quantum states involved in the line producing transition; c) the particular temperature gradient prevailing in the flame; and d) the concentration distribution of the thermometric species. Computer calculations are presented to illustrate errors of several hundred degrees Kelvin which may be made by assuming that that measured temperature is the average temperature.Keywords
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