Laser Raman Probe for Flame Temperature
PURDUE UNIV LAFAYETTE IN PROJECT SQUID HEADQUARTERS
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Experimental spectra of Raman Scattering Stokes fundamental vibrational Q-branches for nitrogen and hydrogen in hydrogen-air flames have been fit to theoretically-calculated profiles in order to determine temperature. The temperature measured from a least square fit of the full nitrogen profile agreed to within about 12 of the value calculated from the ratio of the peak intensity of the first upper state band i.e., hot band to that of the ground state band. Agreement with the temperature estimated from fine-wire thermocouple measurements was approximately 2. Additional theoretical profile calculations are given from nitrogen and hydrogen over the wide range of temperatures.
- Test Facilities, Equipment and Methods
- Atomic and Molecular Physics and Spectroscopy