Uranyl glass for thermometry

Spectroscopic properties were measured and used to assess the potential of uranyl glass as an optical thermometer. The fluorescence decay rate and fluorescence spectrum were determined as a function of temperature of the uranyl glass sample with temperature ranging from 295 K to 500 K. Their variations with temperature provide the following temperature scales: (1) T = 0.02985k + 195.8 where T is temperature and k is fluorescence decay rate. (2) T = 461 -- 4.8I530nm where I530nm is the intensity of fluorescence at 530 nm. (3) T = 453 -- 0.198IT where IT is the total fluorescence intensity.;A simple measurement of the fluorescence decay rate, intensity of fluorescence at 530 nm or total fluorescence intensity of uranyl glass probe provides the temperature of the probe.