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A new approach for phosphor-based temperature determination is presented. This method is based on comparison between the spectrally resolved phosphorescent emission and a database of spectra collected at
a series of temperatures. Applications of two phosphor materials, Gd2O2S:Tb and Mg4(F)GeO6:Mn, possessing different and complementary temperature sensitivities
are illustrated. Efficient and accurate comparison is demonstrated between application and calibration spectra with the use of a custom program featuring a general regression neural net algorithm. With
this approach, single laser-pulse, spatially resolved measurements are demonstrated. Applications of the technique reported here include measurements of the surface temperature of a thermophoretic sampling
probe, the surface temperature of a porous burning solid, wick surface temperatures of supported diffusion flames of acetone, heptane, and decane, and the cellulose pyrolysis and char oxidation temperatures
associated with flame spread across a thermally thin fuel at 300 and 700 Torr air pressure.
The Society publishes the internationally recognized, peer reviewed journal, Applied Spectroscopy, which is available both in print and online. Subscriptions are included with membership or can be purchased by institutional or corporate organizations. Abstracts may be viewed free of charge. Previously published as Bulletin (Society for Applied Spectroscopy)