A STUDY OF A METHOD FOR TEMPERATURE-MEASUREMENT OF HIGH-TEMPERATURE AIR-FLOWS BY O-2-LIPF

We propose a new method for measurement of temperature in high tempera ture air using LIF (laser-induced fluorescence) of Oz molecules excite d by a broad band ArF excimer laser. In this method, temperature can b e measured by using temperature dependence of ratios between fluoresce nce intensities integrated over two spectral regions including spectra l peaks. The theoretical broadband spectra of O-2 molecules are calcul ated and compared with the experimental ones of static hot air (300 K- l 100 K) inside an electric furnace. Temperatures measured by this met hod agree with those measured by a thermocouple within about +/-100 K at a temperature below 1 000 K.