A novel laser-induced fluorescence technique has been developed for measuring the surface temperature of reacting and nonreacting materials. The technique involves seeding the material to be examined with a temperature-sensitive phosphor (Dy:Y AG) and monitoring the laser- induced fluorescence of the phosphor to determine the temperature. The Dy:Y AG phosphor displays a temperature sensitivity in the range 300-1700 K, The technique has been applied to both reacting and nonreacting surfaces under laser excitation, allowing temperature and temporal-history profiles to be determined.
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