Temperature and Concentration Measurements of Acetylene Using Raman Scattering

Vibrational Raman spectra of acetylene ν₂ band were theoretically obtained for the experimental use in a flame. The present simulation includes the effects of Fermi resonance and vibrational l-type resonance-doubling to achieve a more accurate evaluation of temperature and concentration. The spectra such obtained were compared with those measured using an excimer-dye laser system. The theoretical prediction appears usable in a relatively wide range of temperatures due to its high sensitivity to temperature change.